599 pages for tail.

token-counting Claude Developer Platform · in the page build-with-claude/token-counting …uild-with-claude/thinking#thinking-and-the-context-window) for more details. * Thinking blocks from **previous** assistant turns count toward your input tokens on models that [keep all prior turns]… vision Claude Developer Platform · in the page build-with-claude/vision …om/docs/en/api/messages/create) for more example code and parameter details. ### Multiple images You can include multiple images in a single request, and Claude analyzes them jointly. This is useful… working-with-messages Claude Developer Platform · in the page build-with-claude/working-with-messages …Refusal responses (`stop_reason: "refusal"`) also include a `stop_details` object identifying the policy category that triggered the refusal, on every model. See [Handling stop reasons](https://plat… API usage primer for Claude Claude Developer Platform · in the page claude_api_primer …_-]{1,128}$`. | | `description` | A detailed plaintext description of what the tool does, when it should be used, and how it behaves. | | `input_schema` | A [JSON Schem… apply Claude Developer Platform · in the page cli-sdks-libraries/cli/apply …te Resources + 1 to create Apply these changes? (y)es / (n)o / (d)etails y Apply ./claude-lock.json ± Name Status + ./agents/summarizer.md created agent_011CYm1BLqPXpQRk5k… sessions-connect Claude Developer Platform · in the page cli-sdks-libraries/cli/sessions-connect …| | Ctrl+O | Show or hide detail: tool inputs and results, token usage, and status events. `--verbose` (`-v`) starts with detail shown. | | Page Up, Page Down… openai-sdk Claude Developer Platform · in the page cli-sdks-libraries/libraries/openai-sdk …reasoning for complex tasks, the OpenAI SDK doesn't return Claude's detailed thought process. For full thinking features, including access to Claude's step-by-step reasoning output, use the native Cla… csharp Claude Developer Platform · in the page cli-sdks-libraries/sdks/csharp …supported parts of the API. ## Platform integrations <Note> For detailed platform setup guides with code examples, see: * [Amazon Bedrock](https://platform.claude.com/docs/en/build-with-claude/… go Claude Developer Platform · in the page cli-sdks-libraries/sdks/go …sdks-libraries/middleware). ## Platform integrations <Note> For detailed platform setup guides with code examples, see: * [Amazon Bedrock](https://platform.claude.com/docs/en/build-with-claude/… java Claude Developer Platform · in the page cli-sdks-libraries/sdks/java …mas: * `@JsonClassDescription` - Add a description to a tool class detailing when and how to use that tool. * `@JsonTypeName` - Set the tool name to something other than the simple name of the class… php Claude Developer Platform · in the page cli-sdks-libraries/sdks/php …['hello' => 'world'] ); ``` ## Platform integrations <Note> For detailed platform setup guides with code examples, see: * [Amazon Bedrock](https://platform.claude.com/docs/en/build-with-claude/… For Amazon Bedrock support Claude Developer Platform · in the page cli-sdks-libraries/sdks/python …ides support for tool use, also known as function calling. For more details, see [Tool use with Claude](https://platform.claude.com/docs/en/agents-and-tools/tool-use/overview). ### Tool helpers The… Automatically handles tool execution loop Claude Developer Platform · in the page cli-sdks-libraries/sdks/ruby …ta classes for tools and let Claude automatically execute them. For detailed documentation on tool use patterns including the tool runner, see [Tool Runner (SDK)](https://platform.claude.com/docs/en/a… typescript Claude Developer Platform · in the page cli-sdks-libraries/sdks/typescript …the right tool and passing the result back to the model. For more details on tool use, see [Tool use with Claude](https://platform.claude.com/docs/en/agents-and-tools/tool-use/overview). ```typescr… get-started Claude Developer Platform · in the page get-started …ason": "end_turn", "stop_sequence": null, "stop_details": null, "usage": { "input_tokens": 21, "output_tokens": 305 } }… access-transparency Claude Developer Platform · in the page manage-claude/access-transparency …docs/en/zero-data-retention#what-zdr-does-not-cover) for additional details. ## Getting started To enable Access Transparency: <Steps> <Step title="Request Access Transparency"> Contact your… admin-api Claude Developer Platform · in the page manage-claude/admin-api …roles and permissions There are five organization-level roles. For details, see [API Console roles and permissions](https://support.claude.com/en/articles/10186004-api-console-roles-and-permissions).… analytics-api Claude Developer Platform · in the page manage-claude/analytics-api …age and cost over time (usage-based Enterprise plans) For endpoint details, parameters, and response schemas, see the [Claude Enterprise Analytics API reference](https://platform.claude.com/docs/en/a… api-and-data-retention Claude Developer Platform · in the page manage-claude/api-and-data-retention …tion](https://code.claude.com/docs/en/zero-data-retention) for full details. * **Claude Platform on AWS:** [Claude Platform on AWS](https://platform.claude.com/docs/en/build-with-claude/claude-platfor… authentication Claude Developer Platform · in the page manage-claude/authentication …ttps://platform.claude.com/docs/en/manage-claude/wif-reference) for details. ### Key expiration When you create an API key from the [API keys page](https://platform.claude.com/settings/keys) in the… First request Claude Developer Platform · in the page manage-claude/claude-code-analytics-api …er productivity and build custom dashboards. This API provides more detail than the basic [Analytics dashboard](https://platform.claude.com/claude-code) without the complexity of the OpenTelemetry int… cmek Claude Developer Platform · in the page manage-claude/cmek …en/manage-claude/access-transparency#cmek-content-preservation) for details. Safety screening metadata (records derived from Anthropic's automated safety scans, such as pattern identifiers and match i… cmek-aws-kms Claude Developer Platform · in the page manage-claude/cmek-aws-kms …y ARN into **KMS key ARN**, and click **Add**. The key details step shows your organization ID. Add it to the [key policy](https://platform.claude.com/docs/en/manage-claude/cmek-aws-kms#k… cmek-azure-key-vault Claude Developer Platform · in the page manage-claude/cmek-azure-key-vault …name**, and **Tenant ID**, and click **Add**. The key details step shows the organization tag. Add it to the key, as [the create step](https://platform.claude.com/docs/en/manage-claude/c… cmek-google-cloud-kms Claude Developer Platform · in the page manage-claude/cmek-google-cloud-kms …-format="value(name)" ``` From the Console, open the key's details page and click **Copy resource name**. <Frame caption="Copy the key's full resource name from the actions menu.">… WARNING: This operation PERMANENTLY deletes the chat, all of its messages, Claude Developer Platform · in the page manage-claude/compliance-content-data …ext documents. The Compliance API exposes project metadata, project details, and the list of attachments belonging to a project. * [List projects](https://platform.claude.com/docs/en/api/compliance/a… compliance-errors Claude Developer Platform · in the page manage-claude/compliance-errors …e:** The project ID does not exist or has been deleted. The project detail, attachments, and collaborators endpoints return the first body; `DELETE /v1/compliance/apps/projects/{project_id}` returns t… data-residency Claude Developer Platform · in the page manage-claude/data-residency …claude.com/docs/en/about-claude/pricing#data-residency-pricing) for details. The same multiplier applies to [Claude Managed Agents](https://platform.claude.com/docs/en/managed-agents/overview): when… inference-hooks Claude Developer Platform · in the page manage-claude/inference-hooks …quest and response schemas, signature verification, and operational details, see [Develop an integration](https://platform.claude.com/docs/en/manage-claude/inference-hooks-endpoint). *** ## Continue… inference-hooks-endpoint Claude Developer Platform · in the page manage-claude/inference-hooks-endpoint …f any value matches yours, using a constant-time comparison. | Two details cause most verification bugs: * **Verify raw bytes.** Compute the HMAC over the body exactly as received, before any JSON p… rate-limits-api Claude Developer Platform · in the page manage-claude/rate-limits-api …form.claude.com/docs/en/manage-claude/admin-api#authentication) for details. </Check> The SDK and CLI examples on this page construct the default client, which reads the Admin API key from the `ANTHR… spend-limits-api Claude Developer Platform · in the page manage-claude/spend-limits-api …d`. Requires the `read:spend_limits` scope. For complete parameter details and response schemas, see [List effective spend limits](https://platform.claude.com/docs/en/api/beta/organization/spend_limi… First request Claude Developer Platform · in the page manage-claude/usage-cost-api …form.claude.com/docs/en/manage-claude/admin-api#authentication) for details. </Check> Claude Enterprise organizations use an Analytics API key with a different API instead; see [Which API do you need… user-management Claude Developer Platform · in the page manage-claude/user-management …e.com`). Requires the `read:members` scope. For complete parameter details and response schemas, see [List users](https://platform.claude.com/docs/en/api/beta/organization/users/list) in the API refe… wif-admin-api Claude Developer Platform · in the page manage-claude/wif-admin-api …E` targets `.../workspaces/{workspace_id}`. For complete parameter details and response schemas, see the [Service accounts API reference](https://platform.claude.com/docs/en/api/beta/organization/ser… wif-reference Claude Developer Platform · in the page manage-claude/wif-reference …verifying an incoming JWT at exchange time. For complete parameter details and response schemas, see the [Service accounts API reference](https://platform.claude.com/docs/en/api/beta/organization/ser… workload-identity-federation Claude Developer Platform · in the page manage-claude/workload-identity-federation …sources persist; you can re-run the test from the federation rule's detail page. Note the rule's ID (`fdrl_...`) and the service account ID (`svac_...`) the wizard creates: your workload passes both,… workspaces Claude Developer Platform · in the page manage-claude/workspaces …aces** selector in the top-left corner. </Tip> #### Edit workspace details To modify a workspace's name or color: 1. Select the workspace from the list. 2. Click the ellipsis menu (**...**) and cho… events-and-streaming Claude Developer Platform · in the page managed-agents/events-and-streaming …. List the full event history to seed a set of seen event IDs. 3. Tail the live stream, skipping any events already returned by the history list. <CodeGroup> ```bash cURL exec {st… migration Claude Developer Platform · in the page managed-agents/migration …reading via process substitution means the shell doesn't wait for # tail (a foreground `tail -f | grep -m1` pipeline would hang: tail # only dies on its next write, which never comes once the stre… reference Claude Developer Platform · in the page managed-agents/reference …med work item instead of running tools in-process. Receives session details as environment variables. | | `--unrestricted-paths` | All… spawn.sh: called once per claimed work item Claude Developer Platform · in the page managed-agents/self-hosted-sandboxes …is only used at build time. When a sandbox starts, it reads session details from environment variables, handles that session, and exits: ```text FROM your-base-image ARG ANT_V… sessions Claude Developer Platform · in the page managed-agents/sessions …https://platform.claude.com/docs/en/managed-agents/agent-setup) for details. </Tip> ### Set a session budget To cap what a session can spend, pass the optional `budget` object when you create it. A… tools Claude Developer Platform · in the page managed-agents/tools …# Best practices for custom tool definitions * **Provide extremely detailed descriptions.** This is by far the most important factor in tool performance. Your descriptions should explain what the too… webhooks Claude Developer Platform · in the page managed-agents/webhooks …managed-agents/scheduled-deployments#deployment-runs) for the error details. | </Tab> <Tab title=… Or, for the Project Glasswing model with the same capabilities: Claude Developer Platform · in the page models/fable-5-1/migration-guide …ention#model-specific-data-retention-requirements) for per-platform details. Where the two models diverge: * **Availability:** Claude Fable 5.1 doesn't require access approval. Claude Mythos 5.1 is… whats-new-fable-5-1 Claude Developer Platform · in the page models/fable-5-1/whats-new-fable-5-1 …n/build-with-claude/effort#change-effort-mid-conversation-beta) for details. ### Turn-scoped system messages (beta) A [mid-conversation system message](https://platform.claude.com/docs/en/build-with… Or, for the model with the same capabilities and no access approval requirement: Claude Developer Platform · in the page models/fable-5/migration-guide …ention#model-specific-data-retention-requirements) for per-platform details. Where the two models diverge: * **Availability:** Claude Fable 5 does not require access approval. Claude Mythos 5 is ava… From Haiku 3.5 Claude Developer Platform · in the page models/haiku-4-5/migration-guide …ps://platform.claude.com/docs/en/api/rate-limits) documentation for details. **Explore new capabilities:** See the [models overview](https://platform.claude.com/docs/en/models/overview) for details o… migration-guide Claude Developer Platform · in the page models/opus-5-5/migration-guide …e prompt cache hits. * Verify your stop-reason handling reads `stop_details` on refusals. * If you want fast mode, which Claude Opus 4.7 rejects, set `speed: "fast"` with the `fast-mode-2026-02-01` be…