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
820pages tracked
773 changed this week · last read 23 Oct 2026
Claude Code CLI
228pages tracked
147 changed this week · last read 23 Oct 2026
Claude Documentation
280pages tracked
77 changed this week · last read 23 Oct 2026
Model Context Protocol
357pages tracked
171 changed this week · last read 23 Oct 2026
98 on this page
10,098 of the ledger's changes in api. Show every change
ReadSourcePageWhatLines
20 Aug 2026
249 pages
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api
api/beta/agents/archive
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api/beta/agents/archive
- `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 30 more`
- `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 31 more`
- `"user-profiles-2026-08-18"`
"id": "claude-sonnet-4-6",
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api
api/beta/agents
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api/beta/agents
- `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 30 more`
- `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 31 more`
- `"user-profiles-2026-08-18"`
Model identifier. Accepts the [model string](https://platform.claude.com/docs/en/about-claude/models/overview#latest-models-comparison), e.g. `claude-opus-4-6`, or a `model_confi
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api
api/beta-headers
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api/beta-headers
The following examples show the same request with cURL, the `ant` CLI, and the SDKs. The SDKs take beta names in the `betas` parameter and send the `anthropic-beta` header for you:
The following examples show the same request with cURL, the `ant` CLI, and the SDKs, using the [context editing](https://platform.claude.com/docs/en/build-with-claude/context-editi
-H "anthropic-beta: files-api-2025-04-14" \
-H "anthropic-beta: context-management-2025-06-27" \
--beta files-api-2025-04-14 \
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api
api/beta
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api/beta
No line of the body moved in this read.
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api
agents-and-tools/tool-use/web-fetch-tool
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agents-and-tools/tool-use/web-fetch-tool
fmt.Println(response)
fmt.Println(response.RawJSON())
fmt.Println(response)
fmt.Println(response.RawJSON())
fmt.Println(response)
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api
agents-and-tools/tool-use/troubleshooting-tool-use
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agents-and-tools/tool-use/troubleshooting-tool-use
| Error | Cause
| ------------------------------------------------------------------------------------ | -------------------------------------------------------------------------------------------
| `tool_use ids were found without tool_result blocks immediately after` | Missing `tool_result` for some `tool_use` ids, or `tool_result` is not the first content bl
| `was found without a corresponding <name>_tool_result block` | The previous assistant turn has a `server_tool_use` block with no result block (most often,
| `Input schema is not compatible with strict mode: string patterns are not supported` | Using `pattern` with `strict: true`
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api
agents-and-tools/tool-use/tool-search-tool
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agents-and-tools/tool-use/tool-search-tool
fmt.Println(response)
fmt.Println(response.RawJSON())
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api
agents-and-tools/tool-use/strict-tool-use
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agents-and-tools/tool-use/strict-tool-use
fmt.Println(response)
fmt.Println(response.RawJSON())
fmt.Println(response)
fmt.Println(response.RawJSON())
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api
agents-and-tools/tool-use/server-tools
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agents-and-tools/tool-use/server-tools
}' | jq '{stop_reason, content}'
}'
ant messages create --format json <<'YAML' | jq '{stop_reason, content}'
ant messages create <<'YAML'
}' | jq '{stop_reason, content}'
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api
agents-and-tools/tool-use/programmatic-tool-calling
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agents-and-tools/tool-use/programmatic-tool-calling
fmt.Println(response)
fmt.Println(response.RawJSON())
Container: anthropic.MessageNewParamsContainerUnion{
Container: anthropic.MessageCreateParamsContainerUnion{
fmt.Println(response)
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api
agents-and-tools/tool-use/overview
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agents-and-tools/tool-use/overview
Tool use lets Claude call functions that you define or that Anthropic provides. Claude determines when to call a tool based on the user's request and the tool's description. It the
Tool use (also called function calling) lets Claude call functions that you define or that Anthropic provides. Claude determines when to call a tool based on the user's request and
# Claude uses the result to answer the original question.
FOLLOWUP=$(curl -s https://api.anthropic.com/v1/messages \
curl -s https://api.anthropic.com/v1/messages \
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api
agents-and-tools/tool-use/define-tools
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agents-and-tools/tool-use/define-tools
fmt.Println(response)
fmt.Println(response.RawJSON())
fmt.Println(response)
fmt.Println(response.RawJSON())
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api
agents-and-tools/tool-use/code-execution-tool
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agents-and-tools/tool-use/code-execution-tool
This workflow doesn't require a beta header: uploading and downloading files through the Files API and referencing them in `container_upload` blocks are all generally available.
This workflow doesn't require a beta header: uploading and downloading files through the Files API and referencing them in `container_upload` blocks are all generally available.
-H "anthropic-beta: files-api-2025-04-14" \
-H "anthropic-beta: files-api-2025-04-14" \
FILE_ID=$(ant beta:files upload \
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api
agents-and-tools/mcp-connector
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agents-and-tools/mcp-connector
implementation("com.anthropic:anthropic-java-mcp:2.53.0")
implementation("com.anthropic:anthropic-java-mcp:2.57.0")
<version>2.53.0</version>
<version>2.57.0</version>
uploaded = await client.beta.files.upload(
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api
agents-and-tools/agent-skills/quickstart
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agents-and-tools/agent-skills/quickstart
-H "anthropic-version: 2023-06-01" \
-H "anthropic-beta: skills-2025-10-02" |
jq -r '.data[] | "\(.id): \(.display_title)"'
-H "anthropic-version: 2023-06-01"
ant beta:skills list --source anthropic
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api
about-claude/models/whats-new-sonnet-5
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about-claude/models/whats-new-sonnet-5
Claude Sonnet 5 is the first Sonnet-tier model with real-time cybersecurity safeguards. Requests that involve prohibited or high-risk cybersecurity topics may be refused. Refusals
Claude Sonnet 5 is the first Sonnet-tier model with real-time cybersecurity safeguards. Requests that involve prohibited or high-risk cybersecurity topics may be refused. Refusals
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api
about-claude/models/optimizing-for-cost-and-intelligence
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about-claude/models/optimizing-for-cost-and-intelligence
> add prompt caching to this integration
> /claude-api add prompt caching to this integration
* **`max_tokens`** caps a single response, invisibly to the model, so lowering it does not make the model economize. The turns that needed the room are discarded and still billed.
* **`max_tokens`** caps a single response, invisibly to the model, so lowering it does not make the model economize. The turns that needed the room are discarded and still billed.
This pattern saves wall-clock time when workers can run in parallel: on the corpus benchmark[8](https://platform.claude.com/docs/en/about-claude/models/optimizing-for-cost-and-inte
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about-claude/models/migration-guide
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about-claude/models/migration-guide
8. **Real-time cybersecurity safeguards:** Newly added in Claude Opus 4.7, requests that involve prohibited or high-risk topics may lead to refusals. For legitimate security work s
8. **Real-time cybersecurity safeguards:** Newly added in Claude Opus 4.7, requests that involve prohibited or high-risk topics may lead to refusals. For legitimate security work s
* If your product does legitimate security work, apply to the [Cyber Verification Program](https://claude.com/form/cyber-use-case) for access to lower restrictions on cyber content
* If your product does legitimate security work, apply to the [Cyber Verification Program](https://support.claude.com/en/articles/14604842-real-time-cyber-safeguards-on-claude-opus
6. **Cybersecurity safeguards:** Claude Sonnet 5 is the first Sonnet-tier model with real-time cybersecurity safeguards. Requests that involve prohibited or high-risk cybersecurity
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19 Aug 2026
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api
release-notes/overview
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release-notes/overview
- The [Files API](https://platform.claude.com/docs/en/build-with-claude/files) is now generally available on the Claude API. Requests to the `/v1/files` endpoints, and Messages API
* [Agent Skills](https://platform.claude.com/docs/en/agents-and-tools/agent-skills/overview) and the Skills API (`/v1/skills`) are now generally available on the Claude API. Reques
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api
managed-agents/tools
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managed-agents/tools
The agent toolset includes the following tools. All are enabled by default when you include the toolset in your agent configuration. Use the values in the Name column to reference
The agent toolset includes the following tools. All are enabled by default when you include the toolset in your agent configuration. Each entry in the `configs` array is identified
Config entries for `web_search` and `web_fetch` also accept domain filters and other web settings; see [Restrict web search and web fetch domains](https://platform.claude.com/docs/
new() { Name = "web_fetch", Enabled = false },
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api
managed-agents/skills
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managed-agents/skills
When you call the Skills API directly with cURL, pass the `anthropic-beta: skills-2025-10-02` header explicitly. The CLI and SDKs send it automatically.
The Skills API doesn't require a beta header. The cURL example still sends `anthropic-beta: skills-2025-10-02`, and the CLI and SDK `beta` commands add it automatically; requests t
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api
managed-agents/session-operations
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managed-agents/session-operations
You can update a session's `agent.tools` and `agent.mcp_servers`, including permission policies, mid-session without creating a new agent version. Updates are session-local and do
You can update a session's `agent.tools` and `agent.mcp_servers`, including permission policies and per-tool web settings such as [domain filters](https://platform.claude.com/docs/
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api
managed-agents/self-hosted-sandboxes-security
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managed-agents/self-hosted-sandboxes-security
* **Per-session credentials.** Each work item your worker claims can carry a per-session `secret`, which the SDK worker uses in place of the environment service key. Access to [mem
* **Memory store contents.** [Memory stores](https://platform.claude.com/docs/en/managed-agents/memory) remain hosted by Anthropic, including their version history. When a session
* **Read-only memory stores.** A store attached with `read_only` access is protected from upload, not from local modification. The worker's `write` and `edit` tools refuse to write
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api
managed-agents/self-hosted-sandboxes
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managed-agents/self-hosted-sandboxes
Tool execution stays on your host: the filesystem the agent reads and writes, the processes it spawns, and the network it can reach are all under your control. Tool inputs and outp
Tool execution stays on your host: the filesystem the agent reads and writes, the processes it spawns, and the network it can reach are all under your control. Tool inputs and outp
| | Cloud environment | Self-hosted sandbox |
| ----------------------------- | --------------------------- | ------------------- |
| Where tools run | Anthropic-managed sandboxes | Your infrastructure |
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api
managed-agents/scheduled-deployments
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managed-agents/scheduled-deployments
* Deployments require [agent configuration](https://platform.claude.com/docs/en/managed-agents/agent-setup) and [environment configuration](https://platform.claude.com/docs/en/mana
* Deployments require [agent configuration](https://platform.claude.com/docs/en/managed-agents/agent-setup) and [environment configuration](https://platform.claude.com/docs/en/mana
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api
managed-agents/reference
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managed-agents/reference
The CLI worker does not mount [memory stores](https://platform.claude.com/docs/en/managed-agents/memory): a session that attaches one still runs, but the agent finds nothing at the
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api
managed-agents/permission-policies
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managed-agents/permission-policies
new()
new BetaManagedAgentsBashToolConfigParams
Name = "bash",
Configs: []anthropic.BetaManagedAgentsAgentToolConfigParams{{
Name: anthropic.BetaManagedAgentsAgentToolConfigParamsNameBash,
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api
managed-agents/overview
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managed-agents/overview
* **Web search and fetch:** Search the web and retrieve content from URLs
* **Web search and fetch:** Search the web and retrieve content from URLs, optionally restricted to an allowlist or blocklist of domains
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api
managed-agents/migration
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managed-agents/migration
* **Web search and web fetch settings:** Same `allowed_domains`, `blocked_domains`, `max_content_tokens`, and `user_location` fields, now set once on the `web_search` and `web_fetc
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api
managed-agents/memory
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managed-agents/memory
A **memory store** is a workspace-scoped collection of text documents optimized for Claude. When you attach a store to a session, it is mounted as a directory inside the session's
A **memory store** is a workspace-scoped collection of text documents optimized for Claude. When you attach a store to a session, it is mounted as a directory inside the session's
Memory stores are attached in the session's `resources[]` array when the [session is created](https://platform.claude.com/docs/en/managed-agents/sessions#creating-a-session). Unlik
Memory stores are attached in the session's `resources[]` array when the [session is created](https://platform.claude.com/docs/en/managed-agents/sessions#creating-a-session). Unlik
<Note>
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api
managed-agents/mcp-connector
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managed-agents/mcp-connector
The `mcp_toolset` entry supports the same `default_config` and `configs` shape as the built-in agent toolset, applied to the tools the MCP server exposes. The `name` in each `confi
The `mcp_toolset` entry supports a `default_config` object and a `configs` array, applied to the tools the MCP server exposes. Each `configs` entry accepts only `name`, `enabled`,
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api
managed-agents/events-and-streaming
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managed-agents/events-and-streaming
The Claude Console provides a visual timeline view of your agent sessions. Navigate to the Claude Managed Agents section in the Console to see:
* **Session list:** All sessions with their status, creation time, and agent
* **Tracing view:** A chronological view of events (content, timestamps, token usage) within a session. Tracing views are only accessible to Developers and Admins.
* **Tool execution:** Details of each tool call and its result
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api
managed-agents/environments
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managed-agents/environments
The `networking` field controls the sandbox's outbound network access. It does not affect the allowed domains for the `web_search` or `web_fetch` tools.
The `networking` field controls the sandbox's outbound network access. It does not affect the `web_search` or `web_fetch` tools, which run on Anthropic's servers; to restrict the s
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api
managed-agents/define-outcomes
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managed-agents/define-outcomes
Uploading through the Files API requires a beta header that grants Files API access. Your Managed Agents beta header grants this on its own, so you don't need to send `files-api-
Uploading through the Files API doesn't require a beta header. The cURL example sends the `managed-agents-2026-04-01` header it uses throughout this walkthrough, which the Files
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api
manage-claude/workspaces
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manage-claude/workspaces
* **Maximum 100 workspaces** per organization (archived workspaces don't count)
* **Maximum 100 workspaces** per organization by default (archived workspaces don't count); contact your account team if you need more
Yes, you can have a maximum of 100 workspaces per organization. Archived workspaces do not count toward this limit.
Yes. Each organization can have up to 100 workspaces by default, and archived workspaces don't count toward this limit. If you need more, contact your account team.
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manage-claude/data-residency
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manage-claude/data-residency
[Claude Managed Agents](https://platform.claude.com/docs/en/managed-agents/overview) supports geographic pinning at the agent level: `inference_geo` on an [agent's model configur
[Claude Managed Agents](https://platform.claude.com/docs/en/managed-agents/overview) supports geographic pinning at the agent level: `inference_geo` on an [agent's model configur
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manage-claude/api-and-data-retention
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manage-claude/api-and-data-retention
| [Files API](https://platform.claude.com/docs/en/build-with-claude/files) | `/v1/files` | <E
| [Files API](https://platform.claude.com/docs/en/build-with-claude/files) | `/v1/files` | <E
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api
build-with-claude/skills-guide
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build-with-claude/skills-guide
| **Version format** | Date-based: `20251013` or `latest` | Epoch timestamp: `1759178010641129` or `latest` |
| **Version format** | Date-based: `20251013` or `latest` | Version ID: `skver_01AbCdEfGhIjKlMnOpQrStUv` or `latest` |
2. **Beta headers:**
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build-with-claude/pdf-support
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build-with-claude/pdf-support
For PDFs you'll use repeatedly, or when you want to avoid encoding overhead, use the [Files API](https://platform.claude.com/docs/en/build-with-claude/files) (beta):
For PDFs you'll use repeatedly, or when you want to avoid encoding overhead, use the [Files API](https://platform.claude.com/docs/en/build-with-claude/files). These examples send t
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build-with-claude/overview
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build-with-claude/overview
| [Agent Skills](https://platform.claude.com/docs/en/agents-and-tools/agent-skills/overview) | Extend Claude's capabilities with Skills. Use pre-built
| [Agent Skills](https://platform.claude.com/docs/en/agents-and-tools/agent-skills/overview) | Extend Claude's capabilities with Skills. Use pre-built
| Feature | Description
| ------------------------------------------------------------------------ | -------------------------------------------------------------------------------------------------------
| [Files API](https://platform.claude.com/docs/en/build-with-claude/files) | Upload and manage files to use with Claude without re-uploading content with each request. Supports PDF
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build-with-claude/files
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build-with-claude/files
- Status: Beta
- [Beta header](https://platform.claude.com/docs/en/api/beta-headers): `files-api-2025-04-14`
- Platforms: Claude API (beta), Claude Platform on AWS (beta), Microsoft Foundry (beta) [1]; not available on Amazon Bedrock, Google Cloud
- Platforms: Claude API, Claude Platform on AWS (beta), Microsoft Foundry (beta) [1]; not available on Amazon Bedrock, Google Cloud
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build-with-claude/claude-platform-on-aws
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build-with-claude/claude-platform-on-aws
Session behavior on Claude Platform on AWS differs from first-party Claude Managed Agents in one way:
Session behavior on Claude Platform on AWS differs from first-party Claude Managed Agents in two ways:
* **[Memory stores on self-hosted environments](https://platform.claude.com/docs/en/managed-agents/self-hosted-sandboxes#use-memory-stores):** A session that runs on a self-hosted
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build-with-claude/citations
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build-with-claude/citations
Files API document sources are in beta. These examples use the beta client path; see [Files API](https://platform.claude.com/docs/en/build-with-claude/files) for upload detai
These examples reference the uploaded file as a `document` source. They use the SDK `beta` client path and send the `anthropic-beta: files-api-2025-04-14` header, which the A
Files API document sources are in beta. These examples use the beta client path; see [Files API](https://platform.claude.com/docs/en/build-with-claude/files) for upload detai
These examples reference the uploaded file as a `document` source. They use the SDK `beta` client path and send the `anthropic-beta: files-api-2025-04-14` header, which the A
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api/rate-limits
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api/rate-limits
### Files API
[Files API](https://platform.claude.com/docs/en/build-with-claude/files) requests have their own per-organization limit, shared across upload, list, retrieve, download, and delete
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api
api/overview
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api/overview
* **[Files API](https://platform.claude.com/docs/en/api/beta/files/upload)**: Upload and manage files for use across multiple API calls (`POST /v1/files`, `GET /v1/files`)
* **[Skills API](https://platform.claude.com/docs/en/api/skills/create-skill)**: Create and manage custom agent skills (`POST /v1/skills`, `GET /v1/skills`)
* **[Files API](https://platform.claude.com/docs/en/api/beta/files/upload)**: Upload and manage files for use across multiple API calls (`POST /v1/files`, `GET /v1/files`)
* **[Skills API](https://platform.claude.com/docs/en/api/skills/create-skill)**: Create and manage custom agent skills (`POST /v1/skills`, `GET /v1/skills`)
Some list endpoints use a different cursor scheme. The [Message Batches API](https://platform.claude.com/docs/en/build-with-claude/batch-processing), the [Files API](https://plat
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agents-and-tools/tool-use/web-search-tool
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agents-and-tools/tool-use/web-search-tool
These organization-level settings in the Claude Console apply to Messages API requests only. [Claude Managed Agents](https://platform.claude.com/docs/en/managed-agents/overview) se
On [Claude Managed Agents](https://platform.claude.com/docs/en/managed-agents/overview), set these fields on the `web_search` entry of the agent toolset; see [Restrict web search a
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agents-and-tools/tool-use/web-fetch-tool
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agents-and-tools/tool-use/web-fetch-tool
On [Claude Managed Agents](https://platform.claude.com/docs/en/managed-agents/overview), set these fields on the `web_fetch` entry of the agent toolset, where each listed domain mu
On Claude Managed Agents, the `web_fetch` entry of the agent toolset also accepts `max_content_tokens`; see [Restrict web search and web fetch domains](https://platform.claude.com/
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[Claude Managed Agents](https://platform.claude.com/docs/en/managed-agents/overview) uses the same `allowed_domains` and `blocked_domains` fields on the `web_search` and `web_fetch
Organization-level web search and web fetch settings in the Claude Console apply to Messages API requests only; they do not apply to Managed Agents sessions, which use only the per
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Using the Files API with code execution requires the Files API beta header: `"anthropic-beta": "files-api-2025-04-14"`
This workflow doesn't require a beta header: uploading and downloading files through the Files API and referencing them in `container_upload` blocks are all generally available.
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* **Beta header:** `skills-2025-10-02`
The examples on this page use the `code_execution_20260521` tool version, which is generally available and needs only the `skills-2025-10-02` beta header. The Step 3 code parses
Skills are generally available on the Claude API and don't require a beta header. The examples on this page still send the `skills-2025-10-02` beta header and use the SDKs' `beta
The examples use the `code_execution_20260521` tool version, and the Step 3 code parses the result types that current tool versions return. Skills also work with older [code exec
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**Prerequisites:** Using Skills through the API requires the [code execution tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/code-execution-tool), whose contain
* `skills-2025-10-02` - Enables Skills functionality
Add a second header, `files-api-2025-04-14`, when you use the [Files API](https://platform.claude.com/docs/en/build-with-claude/files) to upload input files to the container or dow
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Note that API requests support a maximum of 8 Skills for each request (see [Using Skills with the API](https://platform.claude.com/docs/en/build-with-claude/skills-guide)). If a ro
Note that API requests support a maximum of 20 Skills for each request (see [Using Skills with the API](https://platform.claude.com/docs/en/build-with-claude/skills-guide)). If a r
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resources/overview
title: Resources
title: Model cards
description: Model cards, learning resources, and documentation formats optimized for AI ingestion.
description: Model cards with detailed documentation for Claude models.
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release-notes/overview
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### August 19, 2026
* The [Admin API](https://platform.claude.com/docs/en/api/admin) user-management endpoints for **Claude Enterprise** (claude.ai) organizations (members, invites, groups, and custom
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**The endpoints on this page are in beta for Claude Enterprise organizations.** The beta is enabled for all Claude Enterprise organizations. Group and custom-role requests must i
**The endpoints on this page are generally available for Claude Enterprise organizations.** The [beta header](https://platform.claude.com/docs/en/api/beta-headers) `anthropic-bet
| Endpoints
| ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| [Members](https://platform.claude.com/docs/en/manage-claude/user-management#members) and [invites](https://platform.claude.com/docs/en/manage-claude/user-management#invites)
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| Your organization | Create the key in | Key prefix | W
| ----------------------------------------------------------- | ----------------------------------------------------------------------------------------- | -------------------- | -
| **Claude Console** (Claude Platform, `platform.claude.com`) | [Claude Console > Settings > Admin keys](https://platform.claude.com/settings/admin-keys) | `sk-ant-admin01-...` | O
| **Claude Enterprise** (`claude.ai`) | [claude.ai > Organization settings > API](https://claude.ai/admin-settings/api-access) | `sk-ant-api01-...` | T
| Your organization | Create the key in | Key prefix | W
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**Claude Enterprise:** Claude Enterprise (claude.ai) organizations use the Admin API too, with a scoped API key created in claude.ai. Of the endpoints on this page, only members
**Claude Enterprise:** Claude Enterprise (claude.ai) organizations use the Admin API too, with a scoped API key created in claude.ai. Of the endpoints on this page, only members
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<CodeGroup>
<CodeGroup exclude="shell:cURL, typescript, csharp, go, java, php, ruby">
<CodeGroup>
<CodeGroup exclude="shell:cURL, typescript, csharp, go, java, php, ruby">
<CodeGroup>
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about-claude/additional-resources
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about-claude/additional-resources
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```typescript TypeScript
const client = new Anthropic();
const response = await client.beta.promptCaching.messages.create({
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release-notes/overview
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### August 18, 2026
* Workbench is now [**Playground**](https://platform.claude.com/playground) in the Claude Console. Playground supports every Messages API parameter and includes templates that demo
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manage-claude/workspaces
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| Workspace User | Use the Anthropic Workbench only |
| Workspace User | Use Playground only |
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### What happens with Anthropic Workbench usage?
API usage from the Workbench is not associated with an API key, so `api_key_id` will be `null` even when grouping by that dimension.
### What happens with Playground usage?
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Once the key is validated, attach it to a new workspace before you send any requests to that workspace. For a workspace that already receives requests, the key can take [up
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Once the key is validated, attach it to a workspace to enable CMEK for that workspace's data.
Once the key is validated, attach it to a new workspace before you send any requests to that workspace. For a workspace that already receives requests, the key can take [up
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Once the key is validated, attach it to a new workspace before you send any requests to that workspace. For a workspace that already receives requests, the key can take [up
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Only Organization Admins (on Claude Platform) or Owners and the Primary Owner (on Claude Enterprise) can configure CMEK. On Claude Platform, CMEK is scoped per workspace and config
Only Organization Admins (on Claude Platform) or Owners and the Primary Owner (on Claude Enterprise) can configure CMEK. On Claude Platform, CMEK is scoped per workspace and config
On Claude Platform, Anthropic recommends attaching your key to a new workspace before you send any requests to that workspace. If you attach a key to a workspace that already recei
* Workbench in the Claude Console is disabled.
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* **Console and Workbench:** Any usage on Claude Console or the Workbench prompt-testing interface.
* **Claude Console:** Any usage in the Claude Console, including Playground.
* **Console and Workbench:** Usage through the Claude Console interface (enabling HIPAA readiness from Console settings is supported; processing PHI through the Console is not cove
* **Claude Console:** Usage through the Claude Console interface (enabling HIPAA readiness from Console settings is supported; processing PHI through the Console is not covered).
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| Role | Permissions |
| ------------------ | ----------------------------------------------------------------------------- |
| user | Can use Workbench |
| claude\_code\_user | Can use Workbench and [Claude Code](https://code.claude.com/docs/en/overview) |
| developer | Can use Workbench and manage API keys |
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| Anthropic Workbench | No | The Workbench stores data in data stores that are not covered by Access Transparency |
| Playground (Claude Console) | No | Not covered |
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intro
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intro
Prototype and test prompts in your browser with the Workbench.
Explore and understand the API in your browser with Playground.
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home
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home
Try the Workbench
Try the API in Playground
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* The [Workbench](https://platform.claude.com/playground) in the Claude Console. Add images directly to any User message block.
* [Playground](https://platform.claude.com/playground) in the Claude Console. Add images directly to any User message block.
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The API is made available through the web [Console](https://platform.claude.com/). You can use the [Workbench](https://platform.claude.com/playground) to try out the API in the bro
The API is made available through the web [Console](https://platform.claude.com/). You can use [Playground](https://platform.claude.com/playground) to try out the API in the browse
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<Warning id="workspace-scoped-access">
**Custom Skills are accessible to your entire workspace, not scoped to an end user, conversation, or session.** Any API key in the same workspace can read, invoke, and delete eve
If you are building a multi-tenant platform on the Skills API, create a separate [workspace](https://platform.claude.com/docs/en/manage-claude/workspaces) for each tenant. The wo
</Warning>
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For organization-scale governance, vetting, and deployment guidance, see [Skills for enterprise](https://platform.claude.com/docs/en/agents-and-tools/agent-skills/enterprise).
For organization-scale governance, vetting, and deployment guidance, see [Skills for enterprise](https://platform.claude.com/docs/en/agents-and-tools/agent-skills/enterprise). Clau
For audit logging of Skills API operations, see [Audit logging](https://platform.claude.com/docs/en/build-with-claude/skills-guide#audit-logging) in Using Agent Skills with the API
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### Skill content scanning
Claude Enterprise organizations can turn on automated security scanning for custom Skills in claude.ai and Claude Cowork. The feature is in beta. After you turn on **Skill and plug
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| Status | Error | Cause | Resolution
| ------ | ----------------- | -------------------------------------------------------------------------------------------------------------------------------- | ------------------
| 400 | `invalid_request` | `federation_rule_id` is malformed or a required request field is missing. | Verify the `fdrl_`
| 400 | `invalid_request` | `workspace_id_required`: the federation rule is enabled for more than one workspace and the request omits `workspace_id`. | Set `ANTHROPIC_WOR
| 400 | `invalid_grant` | The JWT `iss` claim does not equal the registered `issuer_url` exactly. | Compare byte-for-b
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The `-output json` flag returns the SVID response and bundle response as a two-element JSON array, so `jq -r '.[0].svids[0].svid'` extracts the bare token. On older SPIRE versions
The `-output json` flag returns the SVID response and bundle response as a two-element JSON array, so `jq -r '.[0].svids[0].svid'` extracts the bare token. On older SPIRE versions
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A successful exchange returns an `access_token` beginning with `sk-ant-oat01-` and an `expires_in` value in seconds. On `400 invalid_grant`, see [Troubleshoot a failed exchange](ht
A successful exchange returns an `access_token` beginning with `sk-ant-oat01-` and an `expires_in` value in seconds. If the exchange fails with the opaque `401` `authentication_err
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A successful exchange returns an `access_token` beginning with `sk-ant-oat01-` and an `expires_in` value in seconds. On `400 invalid_grant`, see [Troubleshoot a failed exchange](ht
A successful exchange returns an `access_token` beginning with `sk-ant-oat01-` and an `expires_in` value in seconds. If the exchange fails with the opaque `401` `authentication_err
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A successful exchange returns an `access_token` beginning with `sk-ant-oat01-` and an `expires_in` value in seconds. On `400 invalid_grant`, see [Troubleshoot a failed exchange](ht
A successful exchange returns an `access_token` beginning with `sk-ant-oat01-` and an `expires_in` value in seconds. A denied exchange returns an opaque `401` `authentication_error
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Check that `iss` is `https://accounts.google.com`, `aud` is `https://api.anthropic.com`, and `email` matches the value in your federation rule. Then run the exchange from the previ
Check that `iss` is `https://accounts.google.com`, `aud` is `https://api.anthropic.com`, and `email` matches the value in your federation rule. Then run the exchange from the previ
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Managed identity workloads need `max_jwt_lifetime_seconds: 86400`. Azure issues managed identity tokens with up to 24 hours between `iat` and `exp` because it caches each resourc
Managed identity workloads need `max_jwt_lifetime_seconds: 86400`. Azure issues managed identity tokens with up to 24 hours between `iat` and `exp` because it caches each resourc
From your Azure resource, run the cURL exchange shown in [Acquire and use the token](https://platform.claude.com/docs/en/manage-claude/wif-providers/azure#acquire-and-use-the-token
From your Azure resource, run the cURL exchange shown in [Acquire and use the token](https://platform.claude.com/docs/en/manage-claude/wif-providers/azure#acquire-and-use-the-token
The Connect workload wizard's Microsoft Entra tile creates the issuer with `max_jwt_lifetime_seconds` set to `7500` (just over 2 hours), which covers the default 60 to 90 minute
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A successful exchange returns an `access_token` beginning with `sk-ant-oat01-` and an `expires_in` value in seconds. On `400 invalid_grant`, see [Troubleshoot a failed exchange](ht
A successful exchange returns an `access_token` beginning with `sk-ant-oat01-` and an `expires_in` value in seconds. If the exchange fails with the opaque `401` `authentication_err
A successful exchange returns an `access_token` beginning with `sk-ant-oat01-` and an `expires_in` value in seconds. On `400 invalid_grant`, see [Troubleshoot a failed exchange](ht
A successful exchange returns an `access_token` beginning with `sk-ant-oat01-` and an `expires_in` value in seconds. If the exchange fails with the opaque `401` `authentication_err
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### Encrypted
### Encrypted with CMEK key
* Personal preferences are disabled for users who belong to a CMEK-protected organization, across all organizations under the same parent. Users who do not belong to a CMEK-protect
### Not encrypted
### Encrypted with Anthropic key
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If you are building a multi-tenant application on the Files API, create a separate [workspace](https://platform.claude.com/docs/en/manage-claude/workspaces) for each tenant. The
* **Total storage:** 500 GB per organization
* **Total storage:** 1 TB per organization
### Audit logging
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```text wrap
your-repo/
├── .claude/
│ └── skills/
│ ├── code-review/
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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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* 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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* 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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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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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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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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```text
pdf-processing/
├── SKILL.md (main instructions)
├── FORMS.md (form-filling guide)
├── REFERENCE.md (detailed API reference)
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```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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## 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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Nothing on this page matches that. Press Enter to search every page of the ledger.