1,018 pages for server.

Messages Claude Developer Platform · in the page api/compliance/apps/chats/messages …- `truncated: boolean` True when `text` was shortened by the server's fixed per-string bound (1 MiB). Always false on chat text blocks. default: false - `ToolUse object`… Get chat messages Claude Developer Platform · in the page api/compliance/apps/chats/messages/list …- `truncated: boolean` True when `text` was shortened by the server's fixed per-string bound (1 MiB). Always false on chat text blocks. default: false - `ToolUse object`… Sessions Claude Developer Platform · in the page api/compliance/apps/sessions …sions, ordered by `created_at` descending; ties are broken by a fixed server-side order. `updated_at` never participates in the ordering; the `updated_at.gte` query parameter filters on it without cha… Local Claude Developer Platform · in the page api/compliance/apps/sessions/local …sions, ordered by `created_at` descending; ties are broken by a fixed server-side order. `updated_at` never participates in the ordering; the `updated_at.gte` query parameter filters on it without cha… List local sessions Claude Developer Platform · in the page api/compliance/apps/sessions/local/list …sions, ordered by `created_at` descending; ties are broken by a fixed server-side order. `updated_at` never participates in the ordering; the `updated_at.gte` query parameter filters on it without cha… Messages Claude Developer Platform · in the page api/compliance/apps/sessions/local/messages …s many bytes (cut on a code-point boundary). Pass `-1` to request the server maximum (approximately 1 MiB); larger values are clamped to it. `0` is not a valid value. default: 10000, minimum: -1, m… Retrieve local session messages Claude Developer Platform · in the page api/compliance/apps/sessions/local/messages/list …s many bytes (cut on a code-point boundary). Pass `-1` to request the server maximum (approximately 1 MiB); larger values are clamped to it. `0` is not a valid value. default: 10000, minimum: -1, m… Remote Claude Developer Platform · in the page api/compliance/apps/sessions/remote …s many bytes (cut on a code-point boundary). Pass `-1` to request the server maximum. `0` is not a valid value. default: 10000, minimum: -1, maximum: 2147483647 - `tool_use_input_max_bytes: option… Messages Claude Developer Platform · in the page api/compliance/apps/sessions/remote/messages …s many bytes (cut on a code-point boundary). Pass `-1` to request the server maximum. `0` is not a valid value. default: 10000, minimum: -1, maximum: 2147483647 - `tool_use_input_max_bytes: option… Retrieve remote session messages Claude Developer Platform · in the page api/compliance/apps/sessions/remote/messages/list …s many bytes (cut on a code-point boundary). Pass `-1` to request the server maximum. `0` is not a valid value. default: 10000, minimum: -1, maximum: 2147483647 - `tool_use_input_max_bytes: option… errors Claude Developer Platform · in the page api/errors …y transient failures (such as connection errors, rate limits, and 5xx server errors) with exponential backoff, twice by default, honoring the `retry-after` header when present. The SDK client accepts… ip-addresses Claude Developer Platform · in the page api/ip-addresses …utbound requests (for example, when making MCP tool calls to external servers). ### IPv4 `160.79.104.0/21` ### Phased out IP addresses The following IP addresses are no longer in use by Anthropic.… Messages Claude Developer Platform · in the page api/messages …ool results. Counted separately from `document_index`; server-side web search results are not included in this count. minimum: 0 - `source: string`… Batches Claude Developer Platform · in the page api/messages/batches …results. Counted separately from `document_index`; server-side web search results are not included in this count. minimum: 0 - `source: string`… Create a Message Batch Claude Developer Platform · in the page api/messages/batches/create …results. Counted separately from `document_index`; server-side web search results are not included in this count. minimum: 0 - `source: string`… Retrieve Message Batch results Claude Developer Platform · in the page api/messages/batches/results …results. Counted separately from `document_index`; server-side web search results are not included in this count. minimum: 0 - `source: string`… Count tokens in a Message Claude Developer Platform · in the page api/messages/count_tokens …ool results. Counted separately from `document_index`; server-side web search results are not included in this count. minimum: 0 - `source: string`… Create a Message Claude Developer Platform · in the page api/messages/create …ool results. Counted separately from `document_index`; server-side web search results are not included in this count. minimum: 0 - `source: string`… Models Claude Developer Platform · in the page api/models …ming-2026-04-21"` - `"thinking-token-count-2026-05-13"` - `"server-side-fallback-2026-06-01"` - `"server-side-fallback-2026-07-01"` - `"fallback-credit-2026-06-01"` - `"fallba… List Models Claude Developer Platform · in the page api/models/list …ming-2026-04-21"` - `"thinking-token-count-2026-05-13"` - `"server-side-fallback-2026-06-01"` - `"server-side-fallback-2026-07-01"` - `"fallback-credit-2026-06-01"` - `"fallba… Get a Model Claude Developer Platform · in the page api/models/retrieve …ming-2026-04-21"` - `"thinking-token-count-2026-05-13"` - `"server-side-fallback-2026-06-01"` - `"server-side-fallback-2026-07-01"` - `"fallback-credit-2026-06-01"` - `"fallba… service-tiers Claude Developer Platform · in the page api/service-tiers …is tier over all other requests. This prioritization helps minimize ["server overloaded" errors](https://platform.claude.com/docs/en/api/errors#http-errors), even during peak times. For more informat… versioning Claude Developer Platform · in the page api/versioning …ing](https://platform.claude.com/docs/en/build-with-claude/streaming) server-sent events (SSE): * Completions are incremental. For example, `" Hello"`, `" my"`, `" name"`, `" is"`, `" Claude." `i… Message Batches API Claude Developer Platform · in the page build-with-claude/batch-processing …luded in a batch. This includes: * Vision * Tool use, including all [server tools](https://platform.claude.com/docs/en/agents-and-tools/tool-use/server-tools) (web search, web fetch, code execution,… claude-in-amazon-bedrock Claude Developer Platform · in the page build-with-claude/claude-in-amazon-bedrock …) * Input sources (URL sources for images and documents, Files API) * Server-side tools (code execution, web search, web fetch, advisor) * Agent infrastructure (Agent Skills, MCP connector, programmat… claude-in-microsoft-foundry Claude Developer Platform · in the page build-with-claude/claude-in-microsoft-foundry …ur Foundry // endpoint. Features that Foundry does not support fail server-side rather // than client-side. For full Foundry support, use the C#, Java, PHP, // Python, or TypeScript SDKs. pack… claude-on-amazon-bedrock-legacy Claude Developer Platform · in the page build-with-claude/claude-on-amazon-bedrock-legacy …* Input sources (URL sources for images and documents, Files API) * Server-side tools (code execution, web search, web fetch, advisor) * Agent infrastructure (Agent Skills, MCP connector, programmat… claude-on-vertex-ai Claude Developer Platform · in the page build-with-claude/claude-on-vertex-ai …* Input sources (URL sources for images and documents, Files API) * Server-side tools (code execution, web fetch, advisor) * Agent infrastructure (Agent Skills, MCP connector, programmatic tool call… claude-platform-on-aws Claude Developer Platform · in the page build-with-claude/claude-platform-on-aws …n The Claude Platform on AWS gateway calls `sts:GetWebIdentityToken` server-side to mint a JWT it forwards to Anthropic. This STS capability is **disabled by default** on every AWS account. Enable it… sent_count = len(messages sent in the compaction request) Claude Developer Platform · in the page build-with-claude/compaction …platform.claude.com/docs/en/build-with-claude/compaction description: Server-side context compaction for managing long conversations that approach context window limits. --- ## Compatibility - Status… compaction-on-demand Claude Developer Platform · in the page build-with-claude/compaction-on-demand …| A transient server problem while producing a block, or while reading one you sent back. | Retry the request.… compaction-threshold Claude Developer Platform · in the page build-with-claude/compaction-threshold …accurate in that case. </Note> ## Combining with other features ### Server tools When using server tools (such as web search), the compaction trigger is checked at the start of each sampling iterat… context-editing Claude Developer Platform · in the page build-with-claude/context-editing …-data-retention). </Note> ## Overview <Note> For most use cases, [server-side compaction](https://platform.claude.com/docs/en/build-with-claude/compaction) is the primary strategy for managing con… context-windows Claude Developer Platform · in the page build-with-claude/context-windows …window limits. For long-running conversations and agentic workflows, [server-side compaction](https://platform.claude.com/docs/en/build-with-claude/compaction) is the primary strategy for context mana… fallback-credit Claude Developer Platform · in the page build-with-claude/fallback-credit …build the retry yourself: over raw HTTP or with custom retry logic. [Server-side fallback](https://platform.claude.com/docs/en/build-with-claude/refusals-and-fallback#server-side-fallback) and the [S… fast-mode Claude Developer Platform · in the page build-with-claude/fast-mode …csharp: `MaxRetries`; go: `option.WithMaxRetries`)), waiting for the server-specified delay before each retry. Because fast mode uses continuous token replenishment, the `retry-after` delay is typica… files Claude Developer Platform · in the page build-with-claude/files …pplication read content that another user uploaded. Treat file IDs as server-side references, and keep the mapping between your users and their files in your application. If you are building a mult… handling-stop-reasons Claude Developer Platform · in the page build-with-claude/handling-stop-reasons …a tool. | Run the tool and return the result. A server tool call still missing its result block completes in a later response. | | [`pause_turn… mid-conversation-system-messages Claude Developer Platform · in the page build-with-claude/mid-conversation-system-messages …ation-system-messages#define-tools-in-a-message-beta). [Adding an MCP server that way](https://platform.claude.com/docs/en/build-with-claude/mid-conversation-system-messages#add-an-mcp-server-mid-conv… overview Claude Developer Platform · in the page build-with-claude/overview …laudePlatformAws bedrock vertexAi azureAi /> | | [Server-side fallback](https://platform.claude.com/docs/en/build-with-claude/refusals-and-fallback) | Retry a refused request insid… preserved-thinking Claude Developer Platform · in the page build-with-claude/preserved-thinking …e date, a mode flag, re-read project instructions, or a plugin or MCP server that connects after the first turn * [Re-renders the context in the first user message](https://platform.claude.com/docs/en… Request 2 caches its request content (not the response) Claude Developer Platform · in the page build-with-claude/prompt-caching …see `ephemeral_5m_input_tokens` writes you didn't request while using server tools such as web search, see [Tool use with prompt caching](https://platform.claude.com/docs/en/agents-and-tools/tool-use/… claude-prompting-best-practices Claude Developer Platform · in the page build-with-claude/prompt-engineering/claude-prompting-best-practices …to create setup scripts (for example, `init.sh`) to gracefully start servers, run test suites, and linters. This prevents repeated work when continuing from a fresh context window. 4. **Starting fre… prompting-claude-fable-5 Claude Developer Platform · in the page build-with-claude/prompt-engineering/prompting-claude-fable-5 …e safeguards. To re-route declined requests automatically, configure [server-side or client-side fallback](https://platform.claude.com/docs/en/build-with-claude/refusals-and-fallback) to Claude Opus 4… Delivering work Claude Developer Platform · in the page build-with-claude/prompt-engineering/prompting-claude-fable-5-1 …on-system-messages) instead of rewriting `system` or `tools`, and let server-side [compaction](https://platform.claude.com/docs/en/build-with-claude/compaction) or [context editing](https://platform.c… prompting-claude-opus-5-5 Claude Developer Platform · in the page build-with-claude/prompt-engineering/prompting-claude-opus-5-5 …n a fallback model, except for `reasoning_extraction` declines, which server-side fallback returns to you instead of retrying; see [Refusals and fallback](https://platform.claude.com/docs/en/models/op… prompting-claude-sonnet-5-5 Claude Developer Platform · in the page build-with-claude/prompt-engineering/prompting-claude-sonnet-5-5 …hropic.com/news/life-sciences-verification-program). If you turn on [server-side fallback](https://platform.claude.com/docs/en/build-with-claude/refusals-and-fallback#server-side-fallback) (beta), it… refusals-and-fallback Claude Developer Platform · in the page build-with-claude/refusals-and-fallback …Y" \ -H "anthropic-version: 2023-06-01" \ -H "anthropic-beta: server-side-fallback-2026-07-01" \ -H "content-type: application/json" \ -d '{ "model": "claude-fable-5", "max… streaming Claude Developer Platform · in the page build-with-claude/streaming …reaming description: Stream Messages API responses incrementally with server-sent events, including text, tool use, and extended thinking deltas. --- When creating a Message, you can set `"stream": t… task-budgets Claude Developer Platform · in the page build-with-claude/task-budgets …udget countdown works Claude sees a budget-countdown marker injected server-side throughout the conversation. The marker shows how many tokens remain in the current agentic loop and updates as the mo…