1,488 pages for read.
Titles and paths first, then pages whose text carries it. Each row opens that page as this site last read it.
overview
Claude Developer Platform · in the page
models/haiku-5-5/overview
…ce per million tokens. Batch API requests are 50% off; prompt caching reads cost 10% of the base input price (2.5% on Claude Fable 5.1 and Claude Mythos 5.1, 5% on Claude Opus 5.5 and Claude Sonnet 5.…
whats-new-haiku-5-5
Claude Developer Platform · in the page
models/haiku-5-5/whats-new-haiku-5-5
…ing` blocks even when the request doesn't mention thinking. Code that reads the first content block as the answer needs to select blocks by their `type` field. See [Configure thinking](https://platfor…
overview
Claude Developer Platform · in the page
models/mythos-5-1/overview
…ce per million tokens. Batch API requests are 50% off; prompt caching reads cost 10% of the base input price (2.5% on Claude Fable 5.1 and Claude Mythos 5.1, 5% on Claude Opus 5.5 and Claude Sonnet 5.…
overview
Claude Developer Platform · in the page
models/mythos-5/overview
…ce per million tokens. Batch API requests are 50% off; prompt caching reads cost 10% of the base input price (2.5% on Claude Fable 5.1 and Claude Mythos 5.1, 5% on Claude Opus 5.5 and Claude Sonnet 5.…
overview
Claude Developer Platform · in the page
models/opus-4-5/overview
…ce per million tokens. Batch API requests are 50% off; prompt caching reads cost 10% of the base input price (2.5% on Claude Fable 5.1 and Claude Mythos 5.1, 5% on Claude Opus 5.5 and Claude Sonnet 5.…
overview
Claude Developer Platform · in the page
models/opus-4-6/overview
…ce per million tokens. Batch API requests are 50% off; prompt caching reads cost 10% of the base input price (2.5% on Claude Fable 5.1 and Claude Mythos 5.1, 5% on Claude Opus 5.5 and Claude Sonnet 5.…
overview
Claude Developer Platform · in the page
models/opus-4-7/overview
…ce per million tokens. Batch API requests are 50% off; prompt caching reads cost 10% of the base input price (2.5% on Claude Fable 5.1 and Claude Mythos 5.1, 5% on Claude Opus 5.5 and Claude Sonnet 5.…
overview
Claude Developer Platform · in the page
models/opus-4-8/overview
…ce per million tokens. Batch API requests are 50% off; prompt caching reads cost 10% of the base input price (2.5% on Claude Fable 5.1 and Claude Mythos 5.1, 5% on Claude Opus 5.5 and Claude Sonnet 5.…
migration-guide
Claude Developer Platform · in the page
models/opus-5-5/migration-guide
…odels/opus-5-5/migration-guide#migrating-from-claude-sonnet-5). Every reader needs [What every request to Claude Opus 5.5 must satisfy](https://platform.claude.com/docs/en/models/opus-5-5/migration-gu…
overview
Claude Developer Platform · in the page
models/opus-5-5/overview
…er million input / output tokens. Four breaking changes affect code already running on Claude Opus 5: [thinking can't be disabled](https://platform.claude.com/docs/en/models/opus-5-5/whats-new-opus-5-…
whats-new-opus-5-5
Claude Developer Platform · in the page
models/opus-5-5/whats-new-opus-5-5
…er million input / output tokens. Four breaking changes affect code already running on Claude Opus 5: [thinking can't be disabled](https://platform.claude.com/docs/en/models/opus-5-5/whats-new-opus-5-…
overview
Claude Developer Platform · in the page
models/opus-5/overview
…ce per million tokens. Batch API requests are 50% off; prompt caching reads cost 10% of the base input price (2.5% on Claude Fable 5.1 and Claude Mythos 5.1, 5% on Claude Opus 5.5 and Claude Sonnet 5.…
Models overview
Claude Developer Platform · in the page
models/overview
…rice per million tokens. Batch API requests are 50% off; prompt cache reads cost 10% of the base input price (2.5% on Claude Fable 5.1 and Claude Mythos 5.1, 5% on Claude Opus 5.5 and Claude Sonnet 5.…
overview
Claude Developer Platform · in the page
models/sonnet-4-5/overview
…ce per million tokens. Batch API requests are 50% off; prompt caching reads cost 10% of the base input price (2.5% on Claude Fable 5.1 and Claude Mythos 5.1, 5% on Claude Opus 5.5 and Claude Sonnet 5.…
overview
Claude Developer Platform · in the page
models/sonnet-4-6/overview
…ce per million tokens. Batch API requests are 50% off; prompt caching reads cost 10% of the base input price (2.5% on Claude Fable 5.1 and Claude Mythos 5.1, 5% on Claude Opus 5.5 and Claude Sonnet 5.…
migration-guide
Claude Developer Platform · in the page
models/sonnet-5-5/migration-guide
…Sonnet 4.5, Claude Sonnet 4, Claude 3.7 Sonnet, or Claude Haiku 4.5. Read the first two sections, then read down to the section for your current model. The [migration checklist](https://platform.clau…
overview
Claude Developer Platform · in the page
models/sonnet-5-5/overview
…nation of speed and intelligence. Five breaking changes affect code already running on Claude Sonnet 5: * [Turn off up-front thinking with `between_tools`](https://platform.claude.com/docs/en/models/…
whats-new-sonnet-5-5
Claude Developer Platform · in the page
models/sonnet-5-5/whats-new-sonnet-5-5
…nation of speed and intelligence. Five breaking changes affect code already running on Claude Sonnet 5: * [Turn off up-front thinking with `between_tools`](https://platform.claude.com/docs/en/models/…
overview
Claude Developer Platform · in the page
models/sonnet-5/overview
…ce per million tokens. Batch API requests are 50% off; prompt caching reads cost 10% of the base input price (2.5% on Claude Fable 5.1 and Claude Mythos 5.1, 5% on Claude Opus 5.5 and Claude Sonnet 5.…
overview
Claude Developer Platform · in the page
release-notes/overview
…}/user_preferences` with your existing Compliance Access Key and the `read:compliance_user_data` scope. See [List user preferences](https://platform.claude.com/docs/en/manage-claude/compliance-org-dat…
claude-fable-5
Claude Developer Platform · in the page
release-notes/system-prompts/claude-fable-5
…a products: Claude in Chrome (a browsing agent), Claude in Excel (a spreadsheet agent), and Claude in Powerpoint (a slides agent). Claude Cowork can use all of these as tools. Claude's product knowle…
claude-fable-5-1
Claude Developer Platform · in the page
release-notes/system-prompts/claude-fable-5-1
…essible via Claude in Chrome (a browsing agent), Claude in Excel (a spreadsheet agent), and Claude in Powerpoint (a slides agent). Claude Cowork can use all of these as tools. Claude is also accessibl…
claude-haiku-4-5
Claude Developer Platform · in the page
release-notes/system-prompts/claude-haiku-4-5
…son can switch models mid-conversation, so earlier messages in this thread that identify as a different model or report a different knowledge cutoff may still be accurate. Claude is accessible throug…
claude-haiku-5-5
Claude Developer Platform · in the page
release-notes/system-prompts/claude-haiku-5-5
…son can switch models mid-conversation, so earlier messages in this thread that identify as a different model or report a different knowledge cutoff may still be accurate. Claude is accessible throug…
claude-opus-4-5
Claude Developer Platform · in the page
release-notes/system-prompts/claude-opus-4-5
…ts **Claude in Chrome** - a browsing agent, **Claude in Excel** - a spreadsheet agent, **and Cowork - a desktop tool for non-developers to automate file and task management**. **Claude does not know…
claude-opus-4-6
Claude Developer Platform · in the page
release-notes/system-prompts/claude-opus-4-6
…a products Claude in Chrome - a browsing agent, Claude in Excel - a spreadsheet agent, and Cowork - a desktop tool for non-developers to automate file and task management. Claude does not know other…
claude-opus-4-7
Claude Developer Platform · in the page
release-notes/system-prompts/claude-opus-4-7
…t that can interact with websites autonomously, Claude in Excel - a spreadsheet agent, and Claude in Powerpoint - a slides agent. Claude Cowork can use all of these as tools. Claude does not know fur…
claude-opus-4-8
Claude Developer Platform · in the page
release-notes/system-prompts/claude-opus-4-8
…a products: Claude in Chrome (a browsing agent), Claude in Excel (a spreadsheet agent), and Claude in Powerpoint (a slides agent). Claude Cowork can use all of these as tools. Claude is also available…
claude-opus-5
Claude Developer Platform · in the page
release-notes/system-prompts/claude-opus-5
…son can switch models mid-conversation, so earlier messages in this thread that identify as a different model or report a different knowledge cutoff may still be accurate. Claude is accessible throug…
claude-opus-5-5
Claude Developer Platform · in the page
release-notes/system-prompts/claude-opus-5-5
…son can switch models mid-conversation, so earlier messages in this thread that identify as a different model or report a different knowledge cutoff may still be accurate. Claude is accessible throug…
claude-sonnet-4-5
Claude Developer Platform · in the page
release-notes/system-prompts/claude-sonnet-4-5
…a products Claude in Chrome - a browsing agent, Claude in Excel - a spreadsheet agent, and Cowork - a desktop tool for non-developers to automate file and task management**. **Claude does not know ot…
claude-sonnet-4-6
Claude Developer Platform · in the page
release-notes/system-prompts/claude-sonnet-4-6
…essible via Claude in Chrome (a browsing agent), Claude in Excel (a spreadsheet agent), and Claude in Powerpoint (a slides agent), all of which Cowork can use as tools. Claude is also accessible via C…
claude-sonnet-5
Claude Developer Platform · in the page
release-notes/system-prompts/claude-sonnet-5
…son can switch models mid-conversation, so earlier messages in this thread that identify as a different model or report a different knowledge cutoff may still be accurate. Claude is accessible throug…
claude-sonnet-5-5
Claude Developer Platform · in the page
release-notes/system-prompts/claude-sonnet-5-5
…son can switch models mid-conversation, so earlier messages in this thread that identify as a different model or report a different knowledge cutoff may still be accurate. Claude is accessible throug…
develop-tests
Claude Developer Platform · in the page
test-and-evaluate/develop-tests
…wondering if maybe I could possibly return it?", "I read online that your policy is 30 days but that seems like it might be out of date because the website was updated six months ago…
handle-streaming-refusals
Claude Developer Platform · in the page
test-and-evaluate/strengthen-guardrails/handle-streaming-refusals
…ifiers includes a `stop_details` object with a `category` and a human-readable `explanation` that you can surface to the user. See [What a refusal looks like](https://platform.claude.com/docs/en/build…
mitigate-jailbreaks
Claude Developer Platform · in the page
test-and-evaluate/strengthen-guardrails/mitigate-jailbreaks
…otecting your users from instructions embedded in content that Claude reads on their behalf: the body of an inbound email, a fetched webpage, OCR output from an uploaded file, or the result of a tool…
Set up Claude Code for your organization
Claude Code CLI · in the page
admin-setup
…venience default rather than an enforcement channel. By default, WSL reads only the Linux file path at `/etc/claude-code`. To extend your Windows registry and `C:\Program Files\ClaudeCode` policy to…
Escalate hard decisions with the advisor tool
Claude Code CLI · in the page
advisor
…th [`/model`](/docs/en/model-config#setting-your-model). If the API already refused the saved advisor in the current conversation, it stays off until `/clear` or `/compact`, even after you switch mode…
How the agent loop works
Claude Code CLI · in the page
agent-sdk/agent-loop
…update the tests") can chain dozens of tool calls across many turns, reading files, editing code, and running tests, with Claude adjusting its approach based on each result. ## Turns and messages A…
Use Claude Code features in the SDK
Claude Code CLI · in the page
agent-sdk/claude-code-features
…, skills, hooks, and more. When you omit `settingSources`, `query()` reads the same filesystem settings as the Claude Code CLI: user, project, and local settings, CLAUDE.md files, and `.claude/` skil…
Configure your agent
Claude Code CLI · in the page
agent-sdk/configuration
…nd limits, and find each feature option's page. An Agent SDK session reads configuration from settings files, environment variables, and the `options` object you pass when you start it. This page sho…
Track cost and usage
Claude Code CLI · in the page
agent-sdk/cost-tracking
…only need the estimated total, you can ignore the per-step usage and read this single value. If you make multiple independent `query()` calls, each result reflects only the cost of that individual c…
Give Claude custom tools
Claude Code CLI · in the page
agent-sdk/custom-tools
…onfigure-allowed-tools). | | Let Claude call tools in parallel | Set `readOnlyHint: true` on tools with no side effects. See [Add tool annotations](#add-tool-annotations). | | Control the error messag…
Rewind file changes with checkpointing
Claude Code CLI · in the page
agent-sdk/file-checkpointing
…er resolves to its checkpoint-time location, or whose backup it can't read safely. [`RewindFilesResult`](/docs/en/agent-sdk/typescript#rewindfilesresult) counts every skipped path in its `skippedLinks…
Intercept and control agent behavior with hooks
Claude Code CLI · in the page
agent-sdk/hooks
…the `options` object in TypeScript). This snippet assumes you have already defined a hook callback, like `protect_env_files` in Python or `protectEnvFiles` in TypeScript from the example above: ```p…
Hosting the Agent SDK
Claude Code CLI · in the page
agent-sdk/hosting
…media transformation. The container runs a one-shot entrypoint that reads the task from the `TASK_PROMPT` environment variable, calls the SDK, and exits. ```typescript TypeScript theme={null} impor…
Connect to external tools with MCP
Claude Code CLI · in the page
agent-sdk/mcp
…asn't connected are absent; see [Error handling](#error-handling) for reading each server's status. This filter prints the MCP tool names: ```typescript TypeScript theme={null} import { query } from…
Migrate to Claude Agent SDK
Claude Code CLI · in the page
agent-sdk/migration-guide
…features.md#what-settingsources-does-not-control) for inputs that are read even when `settingSources` is `[]`. ## Next Steps * Explore the [Agent SDK Overview](/docs/en/agent-sdk/overview.md) to lea…
Modifying system prompts
Claude Code CLI · in the page
agent-sdk/modifying-system-prompts
…eans one of the following: * **Different surface**: the output isn't read in a terminal by the person who triggered it. Chat UIs, structured-output consumers, and non-coding automation each need a pr…