741 pages for description.
Titles and paths first, then pages whose text carries it. Each row opens that page as this site last read it.
claude-opus-4-6
Claude Developer Platform · in the page
release-notes/system-prompts/claude-opus-4-6
…tform.claude.com/docs/en/release-notes/system-prompts/claude-opus-4-6 description: See updates to the core system prompt for Claude Opus 4.6 on [claude.ai](https://claude.ai) and the [Claude iOS app](…
claude-opus-4-7
Claude Developer Platform · in the page
release-notes/system-prompts/claude-opus-4-7
…tform.claude.com/docs/en/release-notes/system-prompts/claude-opus-4-7 description: See updates to the core system prompt for Claude Opus 4.7 on [claude.ai](https://claude.ai) and the [Claude iOS app](…
claude-opus-4-8
Claude Developer Platform · in the page
release-notes/system-prompts/claude-opus-4-8
…tform.claude.com/docs/en/release-notes/system-prompts/claude-opus-4-8 description: See updates to the core system prompt for Claude Opus 4.8 on [claude.ai](https://claude.ai) and the [Claude iOS app](…
claude-opus-5
Claude Developer Platform · in the page
release-notes/system-prompts/claude-opus-5
…latform.claude.com/docs/en/release-notes/system-prompts/claude-opus-5 description: See updates to the core system prompt for Claude Opus 5 on [claude.ai](https://claude.ai) and the [Claude iOS app](ht…
claude-opus-5-5
Claude Developer Platform · in the page
release-notes/system-prompts/claude-opus-5-5
…tform.claude.com/docs/en/release-notes/system-prompts/claude-opus-5-5 description: See updates to the core system prompt for Claude Opus 5.5 on [claude.ai](https://claude.ai) and the [Claude iOS app](…
claude-sonnet-3-5
Claude Developer Platform · in the page
release-notes/system-prompts/claude-sonnet-3-5
…orm.claude.com/docs/en/release-notes/system-prompts/claude-sonnet-3-5 description: See updates to the core system prompt for Claude Sonnet 3.5 on [claude.ai](https://claude.ai) and the [Claude iOS app…
claude-sonnet-3-7
Claude Developer Platform · in the page
release-notes/system-prompts/claude-sonnet-3-7
…orm.claude.com/docs/en/release-notes/system-prompts/claude-sonnet-3-7 description: See updates to the core system prompt for Claude Sonnet 3.7 on [claude.ai](https://claude.ai) and the [Claude iOS app…
claude-sonnet-4
Claude Developer Platform · in the page
release-notes/system-prompts/claude-sonnet-4
…tform.claude.com/docs/en/release-notes/system-prompts/claude-sonnet-4 description: See updates to the core system prompt for Claude Sonnet 4 on [claude.ai](https://claude.ai) and the [Claude iOS app](…
claude-sonnet-4-5
Claude Developer Platform · in the page
release-notes/system-prompts/claude-sonnet-4-5
…orm.claude.com/docs/en/release-notes/system-prompts/claude-sonnet-4-5 description: See updates to the core system prompt for Claude Sonnet 4.5 on [claude.ai](https://claude.ai) and the [Claude iOS app…
claude-sonnet-4-6
Claude Developer Platform · in the page
release-notes/system-prompts/claude-sonnet-4-6
…orm.claude.com/docs/en/release-notes/system-prompts/claude-sonnet-4-6 description: See updates to the core system prompt for Claude Sonnet 4.6 on [claude.ai](https://claude.ai) and the [Claude iOS app…
claude-sonnet-5
Claude Developer Platform · in the page
release-notes/system-prompts/claude-sonnet-5
…tform.claude.com/docs/en/release-notes/system-prompts/claude-sonnet-5 description: See updates to the core system prompt for Claude Sonnet 5 on [claude.ai](https://claude.ai) and the [Claude iOS app](…
claude-sonnet-5-5
Claude Developer Platform · in the page
release-notes/system-prompts/claude-sonnet-5-5
…orm.claude.com/docs/en/release-notes/system-prompts/claude-sonnet-5-5 description: See updates to the core system prompt for Claude Sonnet 5.5 on [claude.ai](https://claude.ai) and the [Claude iOS app…
overview
Claude Developer Platform · in the page
release-notes/system-prompts/overview
…s://platform.claude.com/docs/en/release-notes/system-prompts/overview description: See updates to the core system prompts on [claude.ai](https://claude.ai) and the [Claude iOS app](https://anthropic.c…
overview
Claude Developer Platform · in the page
resources/overview
…del cards url: https://platform.claude.com/docs/en/resources/overview description: Model cards with detailed documentation for Claude models. --- <CardGroup cols={3}> <Card title="Claude Opus 5.5 S…
develop-tests
Claude Developer Platform · in the page
test-and-evaluate/develop-tests
…: https://platform.claude.com/docs/en/test-and-evaluate/develop-tests description: Define measurable success criteria for your LLM application and build evaluations to test it, from exact match checks…
handle-streaming-refusals
Claude Developer Platform · in the page
test-and-evaluate/strengthen-guardrails/handle-streaming-refusals
…/en/test-and-evaluate/strengthen-guardrails/handle-streaming-refusals description: Detect and handle refusal stop reasons in streaming responses, and retry refused requests on a fallback model. --- S…
increase-consistency
Claude Developer Platform · in the page
test-and-evaluate/strengthen-guardrails/increase-consistency
…/docs/en/test-and-evaluate/strengthen-guardrails/increase-consistency description: Make Claude's outputs more consistent by specifying exact formats, prefilling responses, constraining with examples,…
mitigate-jailbreaks
Claude Developer Platform · in the page
test-and-evaluate/strengthen-guardrails/mitigate-jailbreaks
…m/docs/en/test-and-evaluate/strengthen-guardrails/mitigate-jailbreaks description: Defend your application against jailbreaks and prompt injection with input screening, hardened system prompts, and sa…
reduce-hallucinations
Claude Developer Platform · in the page
test-and-evaluate/strengthen-guardrails/reduce-hallucinations
…docs/en/test-and-evaluate/strengthen-guardrails/reduce-hallucinations description: Minimize hallucinations in Claude's outputs by allowing uncertainty, grounding responses in direct quotes, and verify…
reduce-latency
Claude Developer Platform · in the page
test-and-evaluate/strengthen-guardrails/reduce-latency
…de.com/docs/en/test-and-evaluate/strengthen-guardrails/reduce-latency description: Reduce Claude's response latency by choosing a faster model like Claude Haiku 4.5, trimming prompt and output tokens,…
reduce-prompt-leak
Claude Developer Platform · in the page
test-and-evaluate/strengthen-guardrails/reduce-prompt-leak
…om/docs/en/test-and-evaluate/strengthen-guardrails/reduce-prompt-leak description: Reduce the risk of prompt leaks by separating context from user queries, filtering Claude's outputs, and auditing pro…
How the agent loop works
Claude Code CLI · in the page
agent-sdk/agent-loop
…each turn: prompts, responses, tool inputs, tool outputs | | **Skill descriptions** | Session start, via setting sources | Short summaries; full content loads only when invoked | Large tool outputs…
Use Claude Code features in the SDK
Claude Code CLI · in the page
agent-sdk/claude-code-features
…loads every session), skills load on demand. The agent receives skill descriptions at startup and loads the full content when relevant. Skills are discovered from the filesystem through `settingSourc…
Give Claude custom tools
Claude Code CLI · in the page
agent-sdk/custom-tools
…ool()`](/docs/en/agent-sdk/typescript#tool) (TypeScript) with a name, description, schema, and handler. See [Create a custom tool](#create-a-custom-tool). | | Register a tool with Claude | Wrap in `cr…
Rewind file changes with checkpointing
Claude Code CLI · in the page
agent-sdk/file-checkpointing
…g and receive checkpoint UUIDs: | Option | Python | TypeScript | Description | | - | - | - | - | | Enable checkpointing | `enable_file_checkpointing=True` | `enableFileCheckpointing: true…
Intercept and control agent behavior with hooks
Claude Code CLI · in the page
agent-sdk/hooks
…the matcher values for each event type. | Option | Type | Default | Description | | - | - | - | - | | `matcher` | `string` | `undefined` | Pattern matched against the event's filter field, following…
Modifying system prompts
Claude Code CLI · in the page
agent-sdk/modifying-system-prompts
…e/output-styles/code-reviewer.md theme={null} --- name: Code Reviewer description: Thorough code review assistant keep-coding-instructions: true --- You are an expert code reviewer. For every code s…
Configure permissions
Claude Code CLI · in the page
agent-sdk/permissions
…# Available modes The SDK supports these permission modes: | Mode | Description | Tool behavior | | :- | :- | :- | | `default` | Standard permission behavior | No mode-based auto-approvals; calls th…
Agent SDK reference - Python
Claude Code CLI · in the page
agent-sdk/python
…-> AsyncIterator[Message] ``` #### Parameters | Parameter | Type | Description | | :- | :- | :- | | `prompt` | `str \| AsyncIterable[dict]` | The input prompt as a string or async iterable for stre…
Extend agents with skills
Claude Code CLI · in the page
agent-sdk/skills
…ant. Skills are packaged as `SKILL.md` files containing instructions, descriptions, and optional supporting resources. This page also covers [commands in Agent SDK sessions](#commands-in-agent-sdk-ses…
Stream responses in real-time
Claude Code CLI · in the page
agent-sdk/streaming-output
…e/streaming#event-types). Common event types include: | Event Type | Description | | :- | :- | | `message_start` | Start of a new message | | `content_block_start` | Start of a new content block (tex…
Get structured output from agents
Claude Code CLI · in the page
agent-sdk/structured-outputs
…s: z.array( z.object({ step_number: z.number(), description: z.string(), estimated_complexity: z.enum(["low", "medium", "high"]) }) ), risks: z.array(z.stri…
Subagents in the SDK
Claude Code CLI · in the page
agent-sdk/subagents
…"code-reviewer": AgentDefinition( # description tells Claude when to use this subagent description="Expert code review specialist. Use for quali…
Scale to many tools with tool search
Claude Code CLI · in the page
agent-sdk/tool-search
…iscovery The search mechanism matches queries against tool names and descriptions. Names like `search_slack_messages` surface for a wider range of requests than `query_slack`. Descriptions with speci…
Agent SDK reference - TypeScript
Claude Code CLI · in the page
agent-sdk/typescript
…ions?: Options; }): Query; ``` #### Parameters | Parameter | Type | Description | | :- | :- | :- | | `prompt` | `string \| AsyncIterable<`[`SDKUserMessage`](#sdkusermessage)`>` | The input prompt as…
Handle approvals and user input
Claude Code CLI · in the page
agent-sdk/user-input
…call instead. Your callback receives three arguments: | Argument | Description | | - | - | | `toolName` | The name of the tool Claude wants to use (for example, `"Bash"`, `"Write"`, `"Edit"`) | | `…
Manage multiple agents with agent view
Claude Code CLI · in the page
agent-view
…at directory. Each entry describes one session: | Field | Present | Description | | :- | :- | :- | | `cwd`, `kind`, `startedAt` | Always | The working directory, `interactive` or `background`, and t…
Share session output as artifacts
Claude Code CLI · in the page
artifacts
…d your reasoning next to the code instead of reconstructing it from a description. ```text wrap theme={null} Make an artifact that walks through this PR. Render the diff with margin annotations and c…
Configure auto mode
Claude Code CLI · in the page
auto-mode-config
…ode.allow`: exceptions to soft block rules Each is an array of prose descriptions, read as natural-language rules. For tool-pattern-based hard blocks that run before the classifier, use [`permissions…
Best practices for Claude Code
Claude Code CLI · in the page
best-practices
…s | | Developer environment quirks (required env vars) | File-by-file descriptions of the codebase | | Common gotchas or non-obvious behaviors | Self-evident practices like "write clean code" | If Cl…
Champion kit
Claude Code CLI · in the page
champion-kit
…, such as an engineering channel, a standup thread, or a pull-request description. | Examples drawn from your own codebase are more persuasive than any external documentation, because colleagues can s…
Claude Code changelog
Claude Code CLI · in the page
changelog
…--version` to check your installed version. <Update label="2.1.289" description="October 3, 2026"> * Fixed a deny or ask rule on a nested part of a compound shell command not holding over a user-i…
Channels reference
Claude Code CLI · in the page
channels-reference
…l/permission']` are the channel-specific additions: | Field | Type | Description | | :- | :- | :- | | `capabilities.experimental['claude/channel']` | `object` | Required. Always `{}`. Presence regist…
Claude apps gateway configuration
Claude Code CLI · in the page
claude-apps-gateway-config
…y visible origin, and optional TLS termination. | Field | Required | Description | | - | - | - | | `host` | No | Bind address. Default `0.0.0.0`. | | `port` | No | Bind port. Default `8080`. | | `pub…
Deploy Claude apps gateway on AWS
Claude Code CLI · in the page
claude-apps-gateway-on-aws
…s ec2 create-security-group --group-name claude-gateway-alb \ --description "Claude gateway ALB" --vpc-id "$VPC_ID" \ --query GroupId --output text)" GW_SG="$(aws ec2 create-security-g…
Claude apps gateway spend limits
Claude Code CLI · in the page
claude-apps-gateway-spend-limits
…ors"}, "amount": "10000", "period": "daily"}' ``` | Field | Values | Description | | - | - | - | | `scope.type` | `user`, `rbac_group`, `organization` | `user` targets one developer by their OpenID C…
Use Claude Code in the cloud
Claude Code CLI · in the page
claude-code-on-the-web
…xisting terminal session to the cloud. The `--cloud` flag with a task description creates a new cloud session for your current repository; with `-p` and a session ID or claude.ai/code URL it instead […
Explore the .claude directory
Claude Code CLI · in the page
claude-directory
…when: 'Loaded into context at the start of every session', description: 'Project-specific instructions that shape how Claude works in this repository. Put your conventions, common commands,…
claude-tag
Claude Code CLI · in the page
claude-tag
…tle>Work with Claude Tag - Claude.ai Documentation</title><meta name="description" content="Claude Tag puts Claude in your Slack channels with admin-governed access. See what to hand it, how setup wor…
CLI reference
Claude Code CLI · in the page
cli-reference
…age updates with these commands: | Command | Description…