1,158 pages for head.

prompting-claude-haiku-5-5 Claude Developer Platform · in the page build-with-claude/prompt-engineering/prompting-claude-haiku-5-5 …ces it. It needs the `mid-conversation-output-config-2026-07-01` beta header and adaptive thinking, which is the default. With thinking off, a per-message effort change returns a 400 error. ## Accura… prompting-claude-opus-4-8 Claude Developer Platform · in the page build-with-claude/prompt-engineering/prompting-claude-opus-4-8 …ngular sans-serif with wider letter spacing than usual, especially in headings and navigation, so the text feels more engineered and less compressed. Headline text can be large and uppercase, while su… prompting-claude-opus-5-5 Claude Developer Platform · in the page build-with-claude/prompt-engineering/prompting-claude-opus-5-5 …Set `display: "updates"` (beta, `thinking-display-updates-2026-08-18` header) to receive a short summary of each note; see [Progress updates between tool calls](https://platform.claude.com/docs/en/bui… prompting-claude-sonnet-5 Claude Developer Platform · in the page build-with-claude/prompt-engineering/prompting-claude-sonnet-5 …re running Claude Sonnet 5 at `high`, `xhigh`, or `max` effort, leave headroom in `max_tokens` so the model has room for thinking and tool calls. On long tasks, adaptive thinking can use a large share… prompting-claude-sonnet-5-5 Claude Developer Platform · in the page build-with-claude/prompt-engineering/prompting-claude-sonnet-5-5 …stop. Don't start building or changing anything until they say to go ahead. ``` ## Running without up-front thinking To run Claude Sonnet 5.5 without up-front thinking, send `thinking: {"type": "bet… refusals-and-fallback Claude Developer Platform · in the page build-with-claude/refusals-and-fallback …tring `"default"` and send the `server-side-fallback-2026-07-01` beta header. The API then applies the requested model’s server-defined default routing, which selects a recommended fallback model base… search-results Claude Developer Platform · in the page build-with-claude/search-results …text": "All API requests must include an API key in the Authorization header. Keys can be generated from the dashboard. Rate limits: 1000 requests per hour for standard tier, 10000 for premium."… skills-guide Claude Developer Platform · in the page build-with-claude/skills-guide …`skills-2025-10-02` The Skills API is out of beta and needs no beta header. Migrating off `skills-2025-10-02` is optional: requests that send it keep working and keep returning the beta response sha… streaming Claude Developer Platform · in the page build-with-claude/streaming …/docs/en/build-with-claude/thinking#preserved-thinking-controls) beta header, this `Message` object also carries the `input_transformations` array. After a mid-stream [server-side fallback](https://pl… structured-outputs Claude Developer Platform · in the page build-with-claude/structured-outputs …d:** * Backreferences to groups (for example, `\1`, `\2`) * Lookahead/lookbehind assertions (for example, `(?=...)`, `(?!...)`) * Word boundaries: `\b`, `\B` * Complex `{n,m}` quantifiers wit… task-budgets Claude Developer Platform · in the page build-with-claude/task-budgets …regulate on long agentic tasks. featureMetadata: status: beta betaHeader: task-budgets-2026-03-13 supportedModels: - claude-fable-5-2 - claude-mythos-5-2 - claude-fable-5-1 - cla… thinking Claude Developer Platform · in the page build-with-claude/thinking …hold up. That up-front thinking arrives in `thinking` content blocks ahead of the response, and Claude draws on it to produce the final answer. This is why thinking improves performance on complex tas… thinking-troubleshooting Claude Developer Platform · in the page build-with-claude/thinking-troubleshooting …e request didn’t send the `thinking-binding-controls-2026-08-01` beta header, the message adds ``That setting requires the `thinking-binding-controls-2026-08-01` value in the `anthropic-beta` header.`… token-counting Claude Developer Platform · in the page build-with-claude/token-counting …t("GET", imageURL, nil) if err != nil { log.Fatal(err) } req.Header.Set("User-Agent", "AnthropicDocsBot/1.0") resp, err := http.DefaultClient.Do(req) if err != nil { log.Fatal(err)… vision Claude Developer Platform · in the page build-with-claude/vision …r images 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). Upload the image once, then reference the… working-with-messages Claude Developer Platform · in the page build-with-claude/working-with-messages …t("GET", imageURL, nil) if err != nil { log.Fatal(err) } req.Header.Set("User-Agent", "AnthropicDocsBot/1.0") resp, err := http.DefaultClient.Do(req) if err != nil { log.Fatal(err)… API usage primer for Claude Claude Developer Platform · in the page claude_api_primer …"adaptive"}`), interleaved thinking is automatically enabled. No beta header is needed. Sonnet 4.6 supports both the `interleaved-thinking-2025-05-14` beta header with manual extended thinking and ada… On a remote host without a browser: Claude Developer Platform · in the page cli-sdks-libraries/cli/authentication …e admin --scope "org:admin" # Print a bearer token for Authorization headers: ant auth print-credentials --profile admin --access-token ``` The `org:admin` scope is granted only to organization memb… quickstart Claude Developer Platform · in the page cli-sdks-libraries/cli/quickstart …Note> For other ways to authenticate (API key environment variable, headless hosts, multiple workspaces, named profiles, and Workload Identity Federation), see [CLI authentication options](https://p… scripting Claude Developer Platform · in the page cli-sdks-libraries/cli/scripting …t endpoint emits one bare ID on each line, so standard tools such as `head` and `xargs` apply directly. Capture the first result, then pass it to a follow-up command: ```bash FIRST_AGENT=$(ant beta:a… using Claude Developer Platform · in the page cli-sdks-libraries/cli/using …in this namespace automatically send the appropriate `anthropic-beta` header for that resource, so you don’t need to pass it yourself. Use `--beta <header>` only to override the default (for example,… apple-foundation-models Claude Developer Platform · in the page cli-sdks-libraries/libraries/apple-foundation-models …the Claude API credential server-side, so the app ships no key. The `headers` you provide are sent on every request so your proxy can authorize the caller. Pass `[:]` if it needs none: ```swift Clau… openai-sdk Claude Developer Platform · in the page cli-sdks-libraries/libraries/openai-sdk …t isn’t scoped to a workspace, also send the `anthropic-workspace-id` header on every request (for example, `default_headers` in the Python SDK or `defaultHeaders` in TypeScript); see [Select a worksp… csharp Claude Developer Platform · in the page cli-sdks-libraries/sdks/csharp …rkspace, set the workspace ID in the `anthropic-workspace-id` request header; [Select a workspace](https://platform.claude.com/docs/en/manage-claude/authentication#select-a-workspace) shows the per-re… go Claude Developer Platform · in the page cli-sdks-libraries/sdks/go …rkspace, set the workspace ID in the `anthropic-workspace-id` request header; [Select a workspace](https://platform.claude.com/docs/en/manage-claude/authentication#select-a-workspace) shows the per-re… java Claude Developer Platform · in the page cli-sdks-libraries/sdks/java …rkspace, set the workspace ID in the `anthropic-workspace-id` request header; [Select a workspace](https://platform.claude.com/docs/en/manage-claude/authentication#select-a-workspace) shows the per-re… php Claude Developer Platform · in the page cli-sdks-libraries/sdks/php …rkspace, set the workspace ID in the `anthropic-workspace-id` request header; [Select a workspace](https://platform.claude.com/docs/en/manage-claude/authentication#select-a-workspace) shows the per-re… For Amazon Bedrock support Claude Developer Platform · in the page cli-sdks-libraries/sdks/python …rkspace, set the workspace ID in the `anthropic-workspace-id` request header; [Select a workspace](https://platform.claude.com/docs/en/manage-claude/authentication#select-a-workspace) shows the per-re… Automatically handles tool execution loop Claude Developer Platform · in the page cli-sdks-libraries/sdks/ruby …rkspace, set the workspace ID in the `anthropic-workspace-id` request header; [Select a workspace](https://platform.claude.com/docs/en/manage-claude/authentication#select-a-workspace) shows the per-re… typescript Claude Developer Platform · in the page cli-sdks-libraries/sdks/typescript …rkspace, set the workspace ID in the `anthropic-workspace-id` request header; [Select a workspace](https://platform.claude.com/docs/en/manage-claude/authentication#select-a-workspace) shows the per-re… get-api-key Claude Developer Platform · in the page get-api-key …coped to a workspace, you must also send the `anthropic-workspace-id` header on each Claude API request, as shown in [Select a workspace](https://platform.claude.com/docs/en/manage-claude/authenticati… home Claude Developer Platform · in the page home …aude" }' ``` </HomeHero> <HomeSection> <HomeSectionHeader label="Platform" title="Choose how you build" description="Pick the developer surface that matches your approach, and the i… access-transparency-log Claude Developer Platform · in the page manage-claude/access-transparency-log …ation and scoping Send your Compliance Access Key in the `x-api-key` header and the `anthropic-version` header, as for every Compliance API request (see [Versioning](https://platform.claude.com/docs/… admin-api Claude Developer Platform · in the page manage-claude/admin-api …n API key** (starting with `sk-ant-admin...`) sent in the `x-api-key` header. Only organization members with the admin role can provision one. See [Create an Admin API key](https://platform.claude.com… admin-api-keys Claude Developer Platform · in the page manage-claude/admin-api-keys …er-the-same-parent). ## Use the key Pass the key in the `x-api-key` header on every request. See each API’s documentation for complete request examples. A call that exceeds the key’s scopes returns… analytics-api Claude Developer Platform · in the page manage-claude/analytics-api …p> <Step title="Call the API"> Pass the key in the `x-api-key` header: ```bash curl "https://api.anthropic.com/v1/organizations/usage_report/claude_code?starting_at=2025-09-08" \… authentication Claude Developer Platform · in the page manage-claude/authentication …`sk-ant-api...` secret sent as a bearer token in the `Authorization` header | Local development, prototyping, scripts, and servers where you control secret storage… First request Claude Developer Platform · in the page manage-claude/claude-code-analytics-api …-H "x-api-key: $ANTHROPIC_ADMIN_KEY" ``` <Tip> **Set a User-Agent header for integrations** If you’re building an integration, set your User-Agent header to help Anthropic understand usage patt… claude-tag-api Claude Developer Platform · in the page manage-claude/claude-tag-api …laude Console) organizations. Every request must include the [beta header](https://platform.claude.com/docs/en/api/beta-headers) `anthropic-beta: experimental-claude-tag-2026-10-21` (the SDK and th… cmek Claude Developer Platform · in the page manage-claude/cmek …om/docs/en/manage-claude/opentelemetry/api#add-a-destination) request headers, such as the API key header of your observability platform. These are stored under Anthropic-managed encryption. Their val… cmek-coverage-claude-platform Claude Developer Platform · in the page manage-claude/cmek-coverage-claude-platform …/en/manage-claude/opentelemetry/api#add-a-destination) (beta) request headers, such as the API key header of your observability platform | Write-only and never returned in API responses.… compliance-api Claude Developer Platform · in the page manage-claude/compliance-api …on `https://api.anthropic.com`, authenticates through the `x-api-key` header, and takes the [`anthropic-version`](https://platform.claude.com/docs/en/api/versioning) header on every request. To provis… WARNING: This operation PERMANENTLY deletes the chat, all of its messages, Claude Developer Platform · in the page manage-claude/compliance-content-data …t run. Because the list is ordered by `updated_at`, a chat reappears ahead of your saved cursor when it receives a new message, is moved into or out of a project, or is deleted in claude.ai. Each incr… compliance-errors Claude Developer Platform · in the page manage-claude/compliance-errors …m/docs/en/api/errors): a non-2xx status code, a `request-id` response header, and a JSON body with an `error` object containing `type` and `message`. Include the `request-id` header value when you esc… before_id is the first_id from a previous response Claude Developer Platform · in the page manage-claude/compliance-integration-patterns …nage-claude/compliance-errors#429-too-many-requests) for the response headers and retry contract. | Pattern | Choose when… compliance-org-data Claude Developer Platform · in the page manage-claude/compliance-org-data …rieve a marketplace Send the `anthropic-beta: ce-plugins-2026-09-01` header on every request; without it these endpoints return 404 Not Found (see the Plugins API’s [Error responses](https://platform… overview Claude Developer Platform · in the page manage-claude/compliance-security-posture/overview …m. The sidebar item is **Security posture**, and the page it opens is headed **Security Center**. ## Choose your path To get changes on the page into your security information and event management (… compliance-sessions Claude Developer Platform · in the page manage-claude/compliance-sessions …ke the 400, retry it: wait the number of seconds in the `retry-after` header, then send the same request again, unchanged (with the same `page` value, if it had one). See [Server busy reading large tr… inference-hooks-configuration Claude Developer Platform · in the page manage-claude/inference-hooks-configuration …The dialog box asks for nothing else at this point: custom request headers come in step 5, and failure handling in step 6. Click **Next** to save. Once an endpoint is saved, the button reads **Edit… inference-hooks-endpoint Claude Developer Platform · in the page manage-claude/inference-hooks-endpoint …ody; transcripts can be megabytes. self.rfile.read(int(self.headers.get("Content-Length", 0))) verdict = b'{"action": "allow"}' self.send_response(200) self.sen…