HomeDocs changes
Documentation changes
What the docs quietly changed.
Anthropic's published documentation, fetched on a schedule and diffed against the last copy. Every edit dated, including the ones that never made a release note.
Last poll read all 4 cleanly: Claude Code CLI, Claude Developer Platform, Claude Documentation, Model Context Protocol. A date here is when this site noticed, not when Anthropic edited.
Claude Developer Platform
821pages tracked
774 changed this week · last read 23 Oct 2026
Claude Code CLI
228pages tracked
148 changed this week · last read 23 Oct 2026
Claude Documentation
280pages tracked
81 changed this week · last read 23 Oct 2026
Model Context Protocol
357pages tracked
171 changed this week · last read 23 Oct 2026
100 on this page
ReadSourcePageWhatLines
14 Aug 2026
71 pages
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claude-code
tools-reference
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claude-codechanged
tools-reference
Viewing a file with Bash also satisfies the read-before-edit requirement when the command is `cat`, `head`, `tail`, `sed -n 'X,Yp'`, `grep`, `egrep`, or `fgrep` on a single file wi
Viewing a file with Bash also satisfies the read-before-edit requirement when the command is `cat`, `nl`, `bat`, `batcat`, `head`, `tail`, `sed -n 'X,Yp'`, `grep`, `egrep`, `fgrep`
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claude-code
sub-agents
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sub-agents
The `--agents` flag accepts JSON with the same [frontmatter](#supported-frontmatter-fields) fields as file-based subagents: `description`, `prompt`, `tools`, `disallowedTools`, `mo
The `--agents` flag accepts JSON with a `prompt` field plus these [frontmatter](#supported-frontmatter-fields) fields: `description`, `tools`, `disallowedTools`, `model`, `permissi
In [non-interactive mode](/docs/en/headless), the [`--append-subagent-system-prompt`](/docs/en/cli-reference#cli-flags) flag appends the text you provide to the end of every subage
In [non-interactive mode](/docs/en/headless), pass [`--append-subagent-system-prompt`](/docs/en/cli-reference#cli-flags) to append your text to the end of every subagent's system p
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claude-code
skills
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skills
* A skill at any of these levels also overrides a bundled skill with the same name.
* For example, a `code-review` skill in your project's `.claude/skills/` replaces the bundled `/code-review`.
* A skill at any of these levels also overrides a bundled skill with the same name, but not the bundled skill's aliases.
* For example, a `code-review` skill in your project's `.claude/skills/` replaces the bundled `/code-review`, and typing the bundled alias `/review` never runs your skill.
Files in `.claude/commands/` support the same [frontmatter](#frontmatter-reference). Skills are recommended since they support additional features like supporting files.
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permissions
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permissions
| [Command files](/docs/en/skills#where-skills-live) in `.claude/commands/` | Yes. When the added directory and your project both define a command with the same na
Claude Code discovers commands and output styles from the current working directory and its parents, your user directory at `~/.claude/`, and managed settings. Hooks and other `.cl
Claude Code discovers output styles from the current working directory and its parents, your user directory at `~/.claude/`, and managed settings. Hooks and other `.claude/settings
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large-codebases
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large-codebases
Once conventions live in plugins, a teammate starting Claude in an unfamiliar part of the tree has no signal about which plugin that area's owners maintain. A [`SessionStart` hook]
Once conventions live in plugins, a teammate starting Claude in an unfamiliar part of the tree has no signal about which plugin that area's owners maintain. A [`SessionStart` hook]
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claude-code
hooks-guide
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hooks-guide
Any text your command writes to stdout is added to Claude's context. This example reminds Claude of project conventions and recent work. Add this to `.claude/settings.json` in your
Claude Code adds plain text your command writes to stdout to Claude's context. This example reminds Claude of project conventions and recent work. Add this to `.claude/settings.jso
* **Exit 0**: the hook reports no objection through its exit code. For a `PreToolUse` hook this doesn't approve the tool call: the normal [permission flow](/docs/en/permissions) st
* **Exit 0**: the hook reports no objection through its exit code. For a `PreToolUse` hook this doesn't approve the tool call: the normal [permission flow](/docs/en/permissions) st
* JSON that passes schema validation: Claude Code ignores the exit code, the JSON alone decides the outcome, and the hook isn't reported as an error. The per-event exceptions, li
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hooks
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hooks
| Location | Scope | Shareable |
| :--------------------------------------------------------- | :---------------------------- | :---------------------------------------------------- |
| `~/.claude/settings.json` | All your projects | No, local to your machine |
| `.claude/settings.json` | Single project | Yes, can be committed to the repo |
| `.claude/settings.local.json` | Single project | No, gitignored when Claude Code saves a setting to it |
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env-vars
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env-vars
| `CLAUDE_CODE_ENABLE_APPEND_SUBAGENT_PROMPT` | Set to `1` to enable appending extra text to the end of every [subagent](/docs/en/sub-agents)'s system prompt. The [`--a
| `CLAUDE_CODE_ENABLE_APPEND_SUBAGENT_PROMPT` | Set to `1` to enable appending extra text to the end of the system prompt of every [subagent](/docs/en/sub-agents) other
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claude-docs
third-party/claude-desktop/vertex
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claude-docschanged
third-party/claude-desktop/vertex
When your IdP is Microsoft Entra ID, you can run this sign-in through the [OS identity broker](/docs/third-party/claude-desktop/entra-broker) on Windows and macOS instead of the sy
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claude-docs
third-party/claude-desktop/telemetry
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claude-docschanged
third-party/claude-desktop/telemetry
[`otlpHeaders`](/docs/third-party/claude-desktop/configuration#otlpheaders) is a JSON object that maps each header name to its value, for example `{"Authorization":"Bearer <token>"
[`otlpHeaders`](/docs/third-party/claude-desktop/configuration#otlpheaders) is a JSON object that maps each header name to its value, for example `{"Authorization":"Bearer <token>"
For a collector credential that cannot be a static header, [`otlpHeadersHelper`](/docs/third-party/claude-desktop/configuration#otlpheadershelper) names a script on the device that
With [`updateViaUpdatesHost`](/docs/third-party/claude-desktop/configuration#updateviaupdateshost) set to `true`, the app reads the update feed from `releases.claude.com` instead o
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third-party/claude-desktop/local-access
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third-party/claude-desktop/local-access
A leading `~` expands to the user's home directory, so a single profile can express per-user roots like `~/Documents/Claude` across the fleet.
A leading `~` expands to the user's home directory, so a single profile can express per-user roots like `~/Documents/Claude` across the fleet. A path may also reference one of a fi
Each entry is either a plain path string or an object with these fields:
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third-party/claude-desktop/gateway
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third-party/claude-desktop/gateway
```yaml theme={null}
```yaml theme={null} theme={null} theme={null} theme={null}
| Setting | MDM key | Required | Description
| ---------------------- | ------------------------- | --------------------------- | -----------------------------------------------------------------------------------------------
| Credential kind | `inferenceCredentialKind` | Yes — must be `interactive` | Selects sign-in instead of an API key.
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claude-docs
third-party/claude-desktop/foundry
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third-party/claude-desktop/foundry
`inferenceFoundryTenantId` and `inferenceFoundryClientId` can be set only via an MDM profile, not via a bootstrap server. `inferenceFoundryAuthFlow` can be set via either.
`inferenceFoundryTenantId`, `inferenceFoundryClientId`, and `inferenceFoundryAuthFlow` can be set through an MDM profile or a [bootstrap server](/docs/third-party/claude-desktop/bo
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claude-docs
third-party/claude-desktop/extensions
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third-party/claude-desktop/extensions
For a server whose OAuth sign-in goes to Microsoft Entra ID, you can run that sign-in through the [OS identity broker](/docs/third-party/claude-desktop/entra-broker) instead of the
To write the configuration by hand instead, add the repository to the [`allowedPluginMarketplaces`](/docs/third-party/claude-desktop/configuration) configuration key. The key is re
To write the configuration by hand instead, add the repository to the [`allowedPluginMarketplaces`](/docs/third-party/claude-desktop/configuration) configuration key. The key is re
* **Connectors:** install local desktop extensions (`.mcpb`) from the Connectors settings page
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third-party/claude-desktop/entra-broker
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claude-docschanged
third-party/claude-desktop/entra-broker
Several Claude Desktop on 3P features authenticate to Microsoft Entra ID, including the Microsoft Foundry inference provider and the Microsoft 365 connector. Each of these can run
Several Claude Desktop on 3P features can authenticate to Microsoft Entra ID, including the Microsoft Foundry inference provider, gateway and Workforce Identity sign-in when Entra
| Feature | How to enable it | Page |
| ------------------------------------ | ------------------------------------------ | -------------------------------------------------------------------------------- |
| Microsoft Foundry inference provider | Set `inferenceFoundryAuthFlow` to `broker` | [Microsoft Foundry](/docs/third-party/claude-desktop/foundry#in-app-entra-id-sign-in) |
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claude-docs
third-party/claude-desktop/credential-helper
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claude-docschanged
third-party/claude-desktop/credential-helper
The helper's output is cached for `inferenceCredentialHelperTtlSec` seconds (default 3600). After expiry it re-runs at the next session start.
The helper's output is cached for `inferenceCredentialHelperTtlSec` seconds (default 3600). Claude Desktop checks the cached credential's expiry before each turn and, when it has e
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claude-docs
third-party/claude-desktop/configuration
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third-party/claude-desktop/configuration
| Documented type | What to write | Example |
| ---------------- | ---------------------------------------------------------------------- | --------------------------------------------- |
| string | Plain string | `vertex` |
| boolean | `"true"` or `"false"` (or `1` / `0`) | `"true"` |
| integer | Decimal string | `"3600"` |
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tools-reference
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tools-reference
| `Agent` | Spawns a [subagent](/docs/en/sub-agents) with its own context window to handle a task. See [Agent tool behavior](#agent-tool-behavior)
| `Agent` | Spawns a [subagent](/docs/en/sub-agents) with its own context window to handle a task. With [agent teams](/docs/en/agent-teams) enabled, a call that carr
The Agent tool spawns a subagent in a separate context window. The subagent works through its task autonomously, then returns a single text result to the parent conversation. The p
The Agent tool spawns a subagent in a separate context window. The subagent works through its task autonomously, then returns a single text result to the parent conversation. The p
The same Agent tool also launches [forked subagents](/docs/en/sub-agents#fork-the-current-conversation) wherever [fork mode](/docs/en/sub-agents#turn-fork-mode-on-or-off) is on. A
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claude-code
sub-agents
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sub-agents
* Where [fork mode](#turn-fork-mode-on-or-off) is on, as it is by default in an interactive session, Claude Code runs the subagent in the background, forks and named subagents alik
* Where [fork mode](#turn-fork-mode-on-or-off) is on, as it is by default in an interactive session, Claude Code runs the subagent in the background, forks and non-fork subagents a
### Subagent names
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glossary
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glossary
Multiple independent Claude Code sessions coordinated by a team lead, with a shared task list and peer-to-peer messaging. Unlike [subagents](#subagent), which run within a single s
Multiple independent Claude Code sessions coordinated by a team lead, with a shared task list and peer-to-peer messaging. Unlike [subagents](#subagent), which run within a single s
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claude-code
agent-teams
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agent-teams
Enabling agent teams also changes ordinary delegation. Claude may [name a subagent](/docs/en/sub-agents#subagent-names) on its own, and while agent teams are enabled, a subagent th
Spawning teammates also requires an interactive session. In [non-interactive mode](/docs/en/headless) with the `-p` flag, including Agent SDK sessions, Claude doesn't spawn teammat
An agent team forms when the first teammate is spawned, with the main session acting as the lead. There are two ways teammates get spawned:
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best-practices
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best-practices
The `/init` command analyzes your codebase to detect build systems, test frameworks, and code patterns, giving you a solid foundation to refine.
CLAUDE.md files can import additional files using `@path/to/import` syntax:
```markdown CLAUDE.md theme={null}
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claude-code
troubleshoot-install
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troubleshoot-install
The installer couldn't reach the download server. This typically means `downloads.claude.ai` is blocked on your network.
**Solutions:**
1. **Test connectivity directly**:
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claude-code
tools-reference
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tools-reference
| `TodoWrite` | Manages the session task checklist. Disabled by default as of v2.1.142 in favor of `TaskCreate`, `TaskGet`, `TaskList`, and `TaskUpdate`. Set `CLAUDE_COD
| `TodoWrite` | Manages the session task checklist. Disabled by default in favor of `TaskCreate`, `TaskGet`, `TaskList`, and `TaskUpdate`. Set `CLAUDE_CODE_ENABLE_TASKS=
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claude-code
sessions
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sessions
These pages cover related session and parallelism mechanics:
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plugins-reference
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plugins-reference
A plugin that has a `SKILL.md` at its root, no `skills/` subdirectory, and no `skills` manifest field is automatically loaded as a single-skill plugin in Claude Code v2.1.142 and l
A plugin that has a `SKILL.md` at its root, no `skills/` subdirectory, and no `skills` manifest field is automatically loaded as a single-skill plugin. You do not need to set `"ski
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claude-code
jetbrains
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jetbrains
<Note>
After installing the plugin, you may need to restart your IDE completely for it to take effect.
</Note>
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claude-code
how-claude-code-works
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how-claude-code-works
This guide focuses on the terminal. Claude Code also runs in [VS Code](/docs/en/vs-code), [JetBrains IDEs](/docs/en/jetbrains), and other environments.
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claude-code
features-overview
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features-overview
Example: An MCP server connects Claude to your database. A skill teaches Claude your data model, common query patterns, and which tables to use for different tasks.
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claude-code
errors
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errors
Depending on how far the response had progressed, Claude Code retries the request, keeps what Claude produced, or ends the turn:
* If Claude hasn't completed any part of the response yet, including its thinking, Claude Code treats the failure as a dropped connection and [retries the request automatically](#a
* If Claude has finished thinking but hasn't started any text or tool call, Claude Code re-issues the request up to two times in quick succession, then ends the turn with `Connecti
* If Claude has completed a block of text or a tool call, or has started one after finishing its thinking, but hasn't finished the response, Claude Code keeps what Claude completed
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claude-code
env-vars
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env-vars
| `CLAUDE_CODE_ENABLE_TASKS` | Controls whether sessions use the structured Task tools (`TaskCreate`, `TaskUpdate`, `TaskGet`, `TaskList`) or the legac
| `CLAUDE_CODE_ENABLE_TASKS` | Controls whether sessions use the structured Task tools (`TaskCreate`, `TaskUpdate`, `TaskGet`, `TaskList`) or the legac
| `MCP_CONNECTION_NONBLOCKING` | Controls whether startup waits for MCP servers to connect before the first query. MCP startup is non-blocking by default
| `MCP_CONNECTION_NONBLOCKING` | Controls whether startup waits for MCP servers to connect before the first query. MCP startup is non-blocking by default
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api
managed-agents/skills
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apichanged
managed-agents/skills
```text wrap
your-repo/
├── .claude/
│ └── skills/
│ ├── code-review/
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api
manage-claude/inference-hooks-endpoint
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manage-claude/inference-hooks-endpoint
The smallest working integration is a server that reads each request and allows it. Run one of the following servers, expose it at a public `https://` URL (for example, behind a TL
The smallest working integration is a server that reads each request and allows it. Run one of the following servers, expose it at a public `https://` URL (for example, behind a TL
Host your AI security server where Anthropic can reach it: an `https://` URL on port 443, on a publicly routable host (private, loopback, and carrier-grade NAT ranges are refused a
Host your AI security server where Anthropic can reach it: an `https://` URL on port 443, on a publicly routable host (private, loopback, and carrier-grade NAT ranges are refused a
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api
manage-claude/inference-hooks-configuration
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manage-claude/inference-hooks-configuration
* An AI security server HTTPS endpoint that accepts verdict requests: an `https://` URL on port 443, on a publicly routable host, reachable without redirects. For the full [hosting
* An AI security server HTTPS endpoint that accepts verdict requests: an `https://` URL on port 443, on a publicly routable host, reachable without redirects. Reverse-tunnel hosts
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api
manage-claude/cmek
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apichanged
manage-claude/cmek
* In Claude Managed Agents, [memory stores](https://platform.claude.com/docs/en/managed-agents/memory) and [dreams](https://platform.claude.com/docs/en/managed-agents/dreams) are d
| APIs | Tools and features |
| -------------------------------------------------------------- | --------------------------------------------------------------------------------------------------- |
| Messages | Web search |
| Models | Web fetch |
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api
build-with-claude/prompt-engineering/prompting-claude-opus-5
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build-with-claude/prompt-engineering/prompting-claude-opus-5
If your harness is Claude Code or the Claude Agent SDK, the deterministic caps are the `CLAUDE_CODE_MAX_SUBAGENT_SPAWN_DEPTH` and `CLAUDE_CODE_MAX_CONCURRENT_SUBAGENTS` environment
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api
agents-and-tools/tool-use/code-execution-tool
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agents-and-tools/tool-use/code-execution-tool
When Claude creates files during code execution, each created file's ID appears in the code execution tool result, and you can download it with the [Files API](https://platform.cla
When Claude saves files to its output directory during code execution (see [How generated files are captured](https://platform.claude.com/docs/en/agents-and-tools/tool-use/code-exe
#### How generated files are captured
Each `bash_code_execution` call gets a new, empty directory, available to the command as `$OUTPUT_DIR`. When the command finishes, the files at the top level of that directory are
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agents-and-tools/tool-use/advisor-tool
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agents-and-tools/tool-use/advisor-tool
This pattern fits long-horizon agentic workloads (coding agents, computer use, multistep research pipelines) where most turns are mechanical but having an excellent plan is crucial
This pattern fits long-horizon agentic workloads (coding agents, computer use, multistep research pipelines) where most turns are mechanical but having an excellent plan is crucial
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agents-and-tools/agent-skills/overview
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apichanged
agents-and-tools/agent-skills/overview
```text
pdf-processing/
├── SKILL.md (main instructions)
├── FORMS.md (form-filling guide)
├── REFERENCE.md (detailed API reference)
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api
agents-and-tools/agent-skills/best-practices
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apichanged
agents-and-tools/agent-skills/best-practices
```text
pdf/
├── SKILL.md # Main instructions (loaded when triggered)
├── FORMS.md # Form-filling guide (loaded as needed)
├── reference.md # API reference (loaded as needed)
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api
about-claude/models/optimizing-for-cost-and-intelligence
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apinew page
about-claude/models/optimizing-for-cost-and-intelligence
No line of the body moved in this read.
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api
about-claude/models/choosing-a-model
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about-claude/models/choosing-a-model
## Combine models
Multi-model strategies pair a lower-cost model with a frontier model so that most tokens are billed at the lower rate. The two common patterns are an executor that escalates hard d
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claude-docs
third-party/claude-desktop/local-access
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third-party/claude-desktop/local-access
The `allowedWorkspaceFolders` configuration key restricts which paths users may attach as workspace folders.
Set [`allowedWorkspaceFolders`](/docs/third-party/claude-desktop/configuration#allowedworkspacefolders) in the managed configuration to restrict which paths users may attach as wor
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mcp
docs/2026-07-28/develop/build-server
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mcpchanged
docs/2026-07-28/develop/build-server
<Note>
Claude for Desktop is not yet available on Linux. Linux users can proceed to the [Building a client](/docs/2026-07-28/develop/build-client) tutorial to build an MCP client th
</Note>
```bash macOS/Linux theme={null}
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connectors/verification
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connectors/verification
Anthropic has reviewed this connector for quality and security. Verified connectors show a checkmark next to their name.
Anthropic has tested this connector's tools for quality and compatibility and it has met our [Software Directory Policy](https://support.claude.com/en/articles/13145358-anthropic-s
A third-party developer built this connector. It passed Anthropic's automated checks, but Anthropic has not reviewed it in depth.
A third-party developer built this connector. Anthropic screens community connectors before listing, but has not reviewed this connector in depth. We do not control the tools the C
The label is a quality signal. It affects how the connector is displayed and discovered in the directory, not how the connector itself functions: once connected, a community connec
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connectors/directory
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connectors/directory
The directory contains both verified connectors and community connectors. Verified connectors are reviewed by Anthropic for security, reliability, and compatibility. Community conn
The directory contains both verified connectors and community connectors. Verified connectors have been tested by Anthropic for quality and compatibility and met the Software Direc
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claude-code
voice-dictation
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voice-dictation
* **`Voice stream error: WebSocket upgrade rejected with HTTP <status>`**: a server refused your connection with the HTTP status shown, so this isn't a network outage. A status in
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third-party/claude-desktop/connectors-github
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third-party/claude-desktop/connectors-github
| | Remote connector | Local connector
| ------------------------ | ------------------------------------------------------------------------------------ | ----------------------------------------------------------------
| Where the server runs | GitHub's infrastructure | On the user's device, bundled in the app
| Authentication | A personal access token you issue and distribute | OAuth device flow; no tokens to issue or distribute
| Credential handling | Token delivered through the entry's `headers` or a headers helper script | User signs in; the token is acquired and stored encrypted on the
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| Field | Description | Example |
| ----------------- | ----------------------------------------- | ----------------------------------- |
| **OTLP endpoint** | Your OpenTelemetry collector URL | `http://collector.example.com:4318` |
| **OTLP protocol** | Transport protocol | `http/json` or `http/protobuf` |
| **OTLP headers** | Authentication headers for your collector | `Authorization=Bearer your-token` |
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The step is checked once at least one of your tiers has at least one model allowed. See [Seat tiers](/docs/government/org-admin/seat-tiers.md) for more on creating and editing tier
The step is checked once at least one of your tiers has at least one model allowed. See [Seat tiers](https://claude.com/docs/government/org-admin/seat-tiers.md) for more on creatin
* **Add credits** is complete once the billing account your organization draws from has enough balance to serve at least one request. This is funded by Anthropic through your tenan
* **Allocate seats** is complete once your organization has been allocated at least one seat. Use **View seats** to open the [Seats](/docs/government/org-admin/seats.md) page and s
* **Add credits** is complete once the billing account your organization draws from has enough balance to serve at least one request. This is funded by Anthropic through your tenan
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The step is checked once at least one of your tiers has at least one model allowed. See [Seat tiers](/docs/government/org-admin/seat-tiers) for more on creating and editing tiers.
The step is checked once at least one of your tiers has at least one model allowed. See [Seat tiers](/docs/government/org-admin/seat-tiers.md) for more on creating and editing tier
* **Add credits** is complete once the billing account your organization draws from has enough balance to serve at least one request. This is funded by Anthropic through your tenan
* **Allocate seats** is complete once your organization has been allocated at least one seat. Use **View seats** to open the [Seats](/docs/government/org-admin/seats) page and see
* **Add credits** is complete once the billing account your organization draws from has enough balance to serve at least one request. This is funded by Anthropic through your tenan
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| Field | Description |
| --------------------------- | ------------------------------------------------------------------------------------------------------------- |
| distinct\_session\_count | Number of distinct Claude Science sessions. Null on aggregated rows where a distinct count can't be computed. |
| message\_count | Number of messages sent in Claude Science sessions. |
| delegation\_count | Number of delegations (handoffs to a specialized agent) in Claude Science sessions. |
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> | If you are… | Start with |
> | --------------------------- | ------------------------------------------------------------- |
> | A tenant administrator | [Tenant administration](/docs/government/tenant-admin/overview) |
> | An organization owner | [Organization administration](/docs/government/org-admin/overview) |
> | Any user | [Your account](/docs/government/account/overview) |
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| Server | `server` value | What Claude can reach | Setup guide
| ------------- | -------------- | ----------------------------------------------------------------------------------------------------- | -----------------------------------------
| Microsoft 365 | `microsoft365` | Outlook mail and calendar, OneDrive, SharePoint, and Teams, through Microsoft Graph | [Connect to Microsoft 365, local connecto
| Web search | `websearch` | Web search through Brave, Tavily, Exa, or a search endpoint you host | [Built-in web search](/docs/third-party/c
| GitHub (beta) | `github` | Repositories, issues, pull requests, and other GitHub data, on github.com or GitHub Enterprise Server | [Connect to GitHub, local connector](/doc
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<Note>
The paused banner and the navigation indicator only appear while a limit is actually at 100%. Once the window resets, both disappear on their own.
</Note>
> [!NOTE]
>
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Before you begin, it helps to have gone through our [Build an MCP Server](/docs/draft/develop/build-server) tutorial so you can understand how clients and servers communicate.
Before you begin, it helps to have gone through our [Build an MCP Server](/docs/draft/develop/build-server.md) tutorial so you can understand how clients and servers communicate.
* Tool names can be validated according to the format specified [here](/specification/draft/server/tools#tool-names)
* Tool names can be validated according to the format specified [here](/specification/draft/server/tools.md#tool-names)
* Tool names can be validated according to the format specified [here](/specification/draft/server/tools#tool-names)
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<Tabs>
<Tab title="Python">
[You can find the complete code for this tutorial here.](https://github.com/modelcontextprotocol/quickstart-resources/tree/main/mcp-client-python)
## System Requirements
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* SCIM directory provisioning and the [Compliance API](/docs/government/org-admin/compliance-api.md)
* SCIM directory provisioning and the [Compliance API](https://claude.com/docs/government/org-admin/compliance-api.md)
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* SCIM directory provisioning and the [Compliance API](/docs/government/org-admin/compliance-api)
* SCIM directory provisioning and the [Compliance API](/docs/government/org-admin/compliance-api.md)
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<Note>
A tenant restriction can only narrow access. A user still needs valid credentials for a tenant on the list; the header never grants access to a tenant the user does not already b
</Note>
> [!NOTE]
>
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* **[Skills Over MCP WG](/community/working-groups/skills-over-mcp)** - Skill-level metadata may interact with tool annotations for discovery and filtering
* **[Skills Over MCP WG](/community/working-groups/skills-over-mcp.md)** - Skill-level metadata may interact with tool annotations for discovery and filtering
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| Role | Name | Organization | GitHub | Term |
| ----------- | -------------- | ------------ | ---------------------------------------------------- | ------- |
| Facilitator | Sam Morrow | GitHub | [@SamMorrowDrums](https://github.com/SamMorrowDrums) | Initial |
| Facilitator | Robert Reichel | OpenAI | [@rreichel3](https://github.com/rreichel3) | Initial |
| Role | Name | Organization | GitHub | Term |
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community/governance
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community/governance
The [Contributor Ladder](/community/contributor-ladder) is the canonical definition of each role — its requirements, responsibilities, privileges, advancement process, and inactivi
The [Contributor Ladder](/community/contributor-ladder.md) is the canonical definition of each role — its requirements, responsibilities, privileges, advancement process, and inact
**Maintainers** steward specific areas such as SDKs, documentation, or [Working Groups](/community/working-interest-groups). They make decisions for their area independently and es
**Maintainers** steward specific areas such as SDKs, documentation, or [Working Groups](/community/working-interest-groups.md). They make decisions for their area independently and
The [Contributor Ladder](/community/contributor-ladder) also defines the **Member** and **Community Moderator** roles, which sit outside the Steering Group.
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community/governance
| Role | Scope |
| --------------------------- | -------------------------------- |
| **Lead Maintainers (BDFL)** | Final decision authority |
| **Core Maintainers** | Overall project direction |
| **Maintainers** | Working Groups, SDKs, components |
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| Tab | Shown when | What it does |
| ------------- | --------------------------------------------------------------------- | ------------------------------------------------------------------------------ |
| **Servers** | Always | The server list: add, edit, import, connect, and open per-server settings. |
| **Apps** | The server exposes MCP App tools | Renders a tool's UI in a sandboxed frame. |
| **Tools** | `tools` capability | Browse schemas, fill arguments, call, inspect results. |
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| Tab | Key | What it shows |
| ------------- | --- | ------------------------------------------------------------------------------------------- |
| **Info** | `i` | Server info, capabilities, and negotiated protocol details. |
| **Auth** | `a` | OAuth state for the selected server, plus a **Clear OAuth state** action. |
| **Resources** | `r` | Browse and read resources. |
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| Selector | Attribute | Values |
| ----------------------------------- | ----------------- | ------------------------------------------------------------------------------------------------------- |
| `[data-testid="apps-form"]` | `data-app-status` | `ready` (on failure, `data-app-error` carries the reason) |
| `[data-testid="connection-status"]` | `data-status` | `connecting`, then `connected` or `error` (`data-error-message` has the detail) |
| `[data-testid="connection-status"]` | `data-deeplink` | `parsed`, `rejected`, or `none` (`none` means no deep link was given, `rejected` means one was refused) |
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| Era | What the Inspector does at connect |
| -------- | --------------------------------------------------------------------------------------- |
| `legacy` | **The default.** Plain `initialize`, no probing at all. |
| `auto` | Probe `server/discover` first, and fall back to `initialize` on any non-modern outcome. |
| `modern` | Pin exactly `2026-07-28`. No fallback, so a non-modern server fails loudly. |
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| Flag | Behavior
| --------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------
| Flag | Behavior |
| - | - |
| `-h` / `--help` | With no mode flag, prints the launcher's own help and exits. With a mode flag it is forwarded, so `mcp-inspector --cli --help` prints the CLI's help
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| `--method` | Required companions | Notes |
| ------------------------------ | ----------------------------------------------------- | -------------------------------------------------------------------------------- |
| `initialize` | None | Connect-only probe: `{serverInfo, protocolVersion, capabilities, instructions}`. |
| `tools/list` | None | |
| `tools/call` | `--tool-name`, plus `--tool-arg` / `--tool-args-json` | |
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| Surface | Default callback | Why |
| ------- | -------------------------------------- | ---------------------------------------------------------------------------------- |
| **Web** | `http://localhost:6274/oauth/callback` | The main app server already has an HTTP listener. |
| Surface | Default callback | Why |
| - | - | - |
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| Client | Invocation | What it's for |
| ------- | ------------------------------------------- | --------------------------------------------------------------------------------- |
| **Web** | `npx @modelcontextprotocol/inspector` | A full graphical inspector in the browser. The default, and the richest surface. |
| Client | Invocation | What it's for |
| - | - | - |
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| Tab | Shown when | What it does |
| ------------- | --------------------------------------------------------------------- | ------------------------------------------------------------------------------ |
| **Servers** | Always | The server list: add, edit, import, connect, and open per-server settings. |
| **Apps** | The server exposes MCP App tools | Renders a tool's UI in a sandboxed frame. |
| **Tools** | `tools` capability | Browse schemas, fill arguments, call, inspect results. |
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| Tab | Key | What it shows |
| ------------- | --- | ------------------------------------------------------------------------------------------- |
| **Info** | `i` | Server info, capabilities, and negotiated protocol details. |
| **Auth** | `a` | OAuth state for the selected server, plus a **Clear OAuth state** action. |
| **Resources** | `r` | Browse and read resources. |
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| Selector | Attribute | Values |
| ----------------------------------- | ----------------- | ------------------------------------------------------------------------------------------------------- |
| `[data-testid="apps-form"]` | `data-app-status` | `ready` (on failure, `data-app-error` carries the reason) |
| `[data-testid="connection-status"]` | `data-status` | `connecting`, then `connected` or `error` (`data-error-message` has the detail) |
| `[data-testid="connection-status"]` | `data-deeplink` | `parsed`, `rejected`, or `none` (`none` means no deep link was given, `rejected` means one was refused) |
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| Era | What the Inspector does at connect |
| -------- | --------------------------------------------------------------------------------------- |
| `legacy` | **The default.** Plain `initialize`, no probing at all. |
| `auto` | Probe `server/discover` first, and fall back to `initialize` on any non-modern outcome. |
| `modern` | Pin exactly `2026-07-28`. No fallback, so a non-modern server fails loudly. |
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| Flag | Behavior
| --------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------
| Flag | Behavior |
| - | - |
| `-h` / `--help` | With no mode flag, prints the launcher's own help and exits. With a mode flag it is forwarded, so `mcp-inspector --cli --help` prints the CLI's help
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| `--method` | Required companions | Notes |
| ------------------------------ | ----------------------------------------------------- | -------------------------------------------------------------------------------- |
| `initialize` | None | Connect-only probe: `{serverInfo, protocolVersion, capabilities, instructions}`. |
| `tools/list` | None | |
| `tools/call` | `--tool-name`, plus `--tool-arg` / `--tool-args-json` | |
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| Surface | Default callback | Why |
| ------- | -------------------------------------- | ---------------------------------------------------------------------------------- |
| **Web** | `http://localhost:6274/oauth/callback` | The main app server already has an HTTP listener. |
| Surface | Default callback | Why |
| - | - | - |
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| Client | Invocation | What it's for |
| ------- | ------------------------------------------- | --------------------------------------------------------------------------------- |
| **Web** | `npx @modelcontextprotocol/inspector` | A full graphical inspector in the browser. The default, and the richest surface. |
| Client | Invocation | What it's for |
| - | - | - |
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> specification](/specification/latest) and its changelog for authoritative
> specification](/specification/latest.md) and its changelog for authoritative
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<div className="flex items-center gap-2 mb-4">
<Badge color="green" shape="pill">
Final
</Badge>
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| Field | Value
| ------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------
| **SEP** | 2575
| **Title** | Make MCP Stateless
| **Status** | Final
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MCP uses standardized authorization flows to build trust between MCP clients and MCP servers. Its design doesn't focus on one specific authorization or identity system, but rather
MCP uses standardized authorization flows to build trust between MCP clients and MCP servers. Its design doesn't focus on one specific authorization or identity system, but rather
> For MCP servers using the [STDIO transport](/specification/latest/basic/transports#stdio), you can use environment-based credentials or credentials provided by third-party librar
> For MCP servers using the [STDIO transport](/specification/latest/basic/transports.md#stdio), you can use environment-based credentials or credentials provided by third-party lib
We will now set up our MCP server to use the locally-running Keycloak authorization server. Depending on your programming language preference, you can use one of the supported [MCP
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<Tip>
**Authorization for Local MCP Servers**
For MCP servers using the [STDIO transport](/specification/latest/basic/transports#stdio), you can use environment-based credentials or credentials provided by third-party librar
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| Role | Name | Organization | GitHub | Term |
| ---- | ----------------- | ------------ | ------------------------------------------ | ------- |
| Lead | Radoslav Dimitrov | Stacklok | [@rdimitrov](https://github.com/rdimitrov) | Initial |
| Role | Name | Organization | GitHub | Term |
| - | - | - | - | - |
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seps/991-enable-url-based-client-registration-using-oauth-c
> specification](/specification/latest) and its changelog for authoritative
> specification](/specification/latest.md) and its changelog for authoritative
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> specification](/specification/latest) and its changelog for authoritative
> specification](/specification/latest.md) and its changelog for authoritative
request more information from the Client. This SEP builds upon [SEP-2260](https://modelcontextprotocol.io/seps/2260-Require-Server-requests-to-be-associated-with-Client-requests) a
request more information from the Client. This SEP builds upon [SEP-2260](https://modelcontextprotocol.io/seps/2260-Require-Server-requests-to-be-associated-with-Client-requests.md
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seps/2260-Require-Server-requests-to-be-associated-with-Client-requests
> specification](/specification/latest) and its changelog for authoritative
> specification](/specification/latest.md) and its changelog for authoritative
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> specification](/specification/latest) and its changelog for authoritative
> specification](/specification/latest.md) and its changelog for authoritative
* [Sampling](https://modelcontextprotocol.io/specification/2025-06-18/client/sampling) doesn't support tool calling, although it's a cornerstone of modern agentic behaviour. Withou
* Context inclusion is ambiguously defined (see [this doc](https://docs.google.com/document/d/1KUsloHpsjR4fdXdJuofb9jUuK0XWi88clbRm9sWE510/edit?tab=t.0#heading=h.edw7oyac2e87)): it
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<div className="flex items-center gap-2 mb-4">
<Badge color="green" shape="pill">
Final
</Badge>
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<div className="flex items-center gap-2 mb-4">
<Badge color="green" shape="pill">
Final
</Badge>
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<div className="flex items-center gap-2 mb-4">
<Badge color="green" shape="pill">
Final
</Badge>
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seps/1577--sampling-with-tools
<div className="flex items-center gap-2 mb-4">
<Badge color="green" shape="pill">
Final
</Badge>
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Upstream edited 2 Aug 2026 21:13 UTC Recorded here 20 Oct 2026 20:07 UTC
mcp
seps/991-enable-url-based-client-registration-using-oauth-c
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seps/991-enable-url-based-client-registration-using-oauth-c
| Field | Value |
| ------------- | ----------------------------------------------------------------------------------------------------------------- |
| **SEP** | 991 |
| **Title** | Enable URL-based Client Registration using OAuth Client ID Metadata Documents |
| **Status** | Final |
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Upstream edited 2 Aug 2026 21:13 UTC Recorded here 28 Sep 2026 22:07 UTC
mcp
seps/2322-MRTR
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seps/2322-MRTR
| Field | Value
| ------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------
| **SEP** | 2322
| **Title** | Multi Round-Trip Requests
| **Status** | Final
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Upstream edited 2 Aug 2026 21:13 UTC Recorded here 28 Sep 2026 22:07 UTC
mcp
seps/2260-Require-Server-requests-to-be-associated-with-Client-requests
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seps/2260-Require-Server-requests-to-be-associated-with-Client-requests
| Field | Value |
| ------------- | ------------------------------------------------------------------------------- |
| **SEP** | 2260 |
| **Title** | Require Server requests to be associated with a Client request. |
| **Status** | Final |
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Upstream edited 2 Aug 2026 21:13 UTC Recorded here 28 Sep 2026 22:07 UTC
mcp
seps/1577--sampling-with-tools
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seps/1577--sampling-with-tools
| Field | Value |
| ------------- | ------------------------------------------------------------------------------- |
| **SEP** | 1577 |
| **Title** | Sampling With Tools |
| **Status** | Final |
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extensions/tasks/overview
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extensions/tasks/overview
> MCP Tasks is an extension to the [core MCP specification](/specification/latest). Host
> MCP Tasks is an extension to the [core MCP specification](/specification/latest.md). Host
See the [client matrix](/extensions/client-matrix) for extension support across
See the [client matrix](/extensions/client-matrix.md) for extension support across
The Tasks extension is specified in the [ext-tasks repository](https://github.com/modelcontextprotocol/ext-tasks). It uses the standard MCP [extension negotiation](/extensions/over
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extensions/tasks/overview
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extensions/tasks/overview
<Card title="modelcontextprotocol/ext-tasks" icon="github" href="https://github.com/modelcontextprotocol/ext-tasks">
Full specification and documentation for MCP Tasks.
</Card>
> **[modelcontextprotocol/ext-tasks](https://github.com/modelcontextprotocol/ext-tasks)**
>
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