978 pages for system.

Update a Vault Claude Developer Platform · in the page api/beta/vaults/update …- `"thinking-binding-controls-2026-08-01"` - `"mid-conversation-system-clear-at-2026-08-21"` - `"compact-2026-09-04"` - `"inline-tools-2026-09-15"` - `"mcp-client-2026-09-15"` - `"ce… routines-fire Claude Developer Platform · in the page api/claude-code/routines-fire …eturns the resulting session ID and URL. Typical callers are alerting systems, CI pipelines, and internal tools that need to start a Claude Code session programmatically. Calling this endpoint requir… Compliance API Claude Developer Platform · in the page api/compliance …efault artifact for an artifact type (for example, its default design system) was set or cleared. Neither artifact named is itself modified. - `"claude_artifact_type_pin_updated"` An artifact… Activities Claude Developer Platform · in the page api/compliance/activities …efault artifact for an artifact type (for example, its default design system) was set or cleared. Neither artifact named is itself modified. - `"claude_artifact_type_pin_updated"` An artifact… Query compliance activities Claude Developer Platform · in the page api/compliance/activities/list …efault artifact for an artifact type (for example, its default design system) was set or cleared. Neither artifact named is itself modified. - `"claude_artifact_type_pin_updated"` An artifact… Apps Claude Developer Platform · in the page api/compliance/apps …ncated`). Extended-thinking content is never included. The request's `system` field is never included; a presence-only marker message is emitted when it was set. The request's `tools[]` definitions ar… Code Claude Developer Platform · in the page api/compliance/apps/code …tifact_type: "claude_dashboards" or "claude_design" or "claude_design_systems" or 5 more` Which kind of Artifact this is: `code` for a site published from Claude Code, or the built-in Artifact ty… Artifacts Claude Developer Platform · in the page api/compliance/apps/code/artifacts …tifact_type: "claude_dashboards" or "claude_design" or "claude_design_systems" or 5 more` Which kind of Artifact this is: `code` for a site published from Claude Code, or the built-in Artifact ty… Download Code Artifact Content Claude Developer Platform · in the page api/compliance/apps/code/artifacts/download …`. A name that could not be saved or opened safely on every operating system is changed. Use `exported_as`, not `original_path`, to find a file in the archive. - `omitted_files`: the files left out of… List Code Artifacts Claude Developer Platform · in the page api/compliance/apps/code/artifacts/list …tifact_type: "claude_dashboards" or "claude_design" or "claude_design_systems" or 5 more` Which kind of Artifact this is: `code` for a site published from Claude Code, or the built-in Artifact ty… Download Code Artifact Version Content Claude Developer Platform · in the page api/compliance/apps/code/artifacts/retrieve_version …`. A name that could not be saved or opened safely on every operating system is changed. Use `exported_as`, not `original_path`, to find a file in the archive. - `omitted_files`: the files left out of… Sessions Claude Developer Platform · in the page api/compliance/apps/sessions …ncated`). Extended-thinking content is never included. The request's `system` field is never included; a presence-only marker message is emitted when it was set. The request's `tools[]` definitions ar… Local Claude Developer Platform · in the page api/compliance/apps/sessions/local …ncated`). Extended-thinking content is never included. The request's `system` field is never included; a presence-only marker message is emitted when it was set. The request's `tools[]` definitions ar… Messages Claude Developer Platform · in the page api/compliance/apps/sessions/local/messages …ncated`). Extended-thinking content is never included. The request's `system` field is never included; a presence-only marker message is emitted when it was set. The request's `tools[]` definitions ar… Retrieve local session messages Claude Developer Platform · in the page api/compliance/apps/sessions/local/messages/list …ncated`). Extended-thinking content is never included. The request's `system` field is never included; a presence-only marker message is emitted when it was set. The request's `tools[]` definitions ar… errors Claude Developer Platform · in the page api/errors …`api_error`: An unexpected error has occurred internal to Anthropic’s systems. Retry the request with exponential backoff; if the error persists, contact support with the [request ID](https://platform… Messages Claude Developer Platform · in the page api/messages …-messages?sdk_languages=http). Note that if you want to include a [system prompt](https://platform.claude.com/docs/en/build-with-claude/prompt-engineering/claude-prompting-best-practices?sdk_langua… Batches Claude Developer Platform · in the page api/messages/batches …sages?sdk_languages=http). Note that if you want to include a [system prompt](https://platform.claude.com/docs/en/build-with-claude/prompt-engineering/claude-prompting-best-practices?sdk_langua… Cancel a Message Batch Claude Developer Platform · in the page api/messages/batches/cancel …is initiated, the batch enters a `canceling` state, at which time the system may complete any in-progress, non-interruptible requests before finalizing cancellation. The number of canceled requests i… Create a Message Batch Claude Developer Platform · in the page api/messages/batches/create …sages?sdk_languages=http). Note that if you want to include a [system prompt](https://platform.claude.com/docs/en/build-with-claude/prompt-engineering/claude-prompting-best-practices?sdk_langua… Retrieve Message Batch results Claude Developer Platform · in the page api/messages/batches/results …had the prefix matched the previous request. - `CacheMissSystemChanged object` A `cache_miss_reason` for a request whose `system` differs from the previous request's.… Count tokens in a Message Claude Developer Platform · in the page api/messages/count_tokens …-messages?sdk_languages=http). Note that if you want to include a [system prompt](https://platform.claude.com/docs/en/build-with-claude/prompt-engineering/claude-prompting-best-practices?sdk_langua… Create a Message Claude Developer Platform · in the page api/messages/create …-messages?sdk_languages=http). Note that if you want to include a [system prompt](https://platform.claude.com/docs/en/build-with-claude/prompt-engineering/claude-prompting-best-practices?sdk_langua… Before Claude Developer Platform · in the page api/migration-2026-10-21 …a type of its own: `UserMessageParam`, `AssistantMessageParam`, and `SystemMessageParam`. `BetaMessageParam` is split the same way, into `BetaUserMessageParam`, `BetaAssistantMessageParam`, and `Beta… spans Claude Developer Platform · in the page api/opentelemetry/spans …| | `gen_ai.system_instructions` | `string` | <Badge>Content</Badge> A JSON string that follows the OpenTelemetry [`SystemInst… Organization Claude Developer Platform · in the page api/organization …creator is not recorded (legacy, workload-identity-federated, or system-created keys). - `type: "service_account" or "user"` Type of the actor that created the object. - `"serv… API Keys Claude Developer Platform · in the page api/organization/api_keys …creator is not recorded (legacy, workload-identity-federated, or system-created keys). - `type: "service_account" or "user"` Type of the actor that created the object. - `"serv… List API Keys Claude Developer Platform · in the page api/organization/api_keys/list …creator is not recorded (legacy, workload-identity-federated, or system-created keys). - `type: "service_account" or "user"` Type of the actor that created the object. - `"serv… Retrieve API Key (Admin API) Claude Developer Platform · in the page api/organization/api_keys/retrieve …creator is not recorded (legacy, workload-identity-federated, or system-created keys). - `type: "service_account" or "user"` Type of the actor that created the object. - `"serv… Update API Key Claude Developer Platform · in the page api/organization/api_keys/update …creator is not recorded (legacy, workload-identity-federated, or system-created keys). - `type: "service_account" or "user"` Type of the actor that created the object. - `"serv… Federation Claude Developer Platform · in the page api/organization/federation …or null` Only `false` is accepted, to re-enable polling after the system pauses it. Polling is paused automatically; sending `true` is rejected. - `max_jwt_lifetime_seconds: optional number or nu… Issuers Claude Developer Platform · in the page api/organization/federation/issuers …or null` Only `false` is accepted, to re-enable polling after the system pauses it. Polling is paused automatically; sending `true` is rejected. - `max_jwt_lifetime_seconds: optional number or nu… Update Federation Issuer Claude Developer Platform · in the page api/organization/federation/issuers/update …or null` Only `false` is accepted, to re-enable polling after the system pauses it. Polling is paused automatically; sending `true` is rejected. - `max_jwt_lifetime_seconds: optional number or nu… overview Claude Developer Platform · in the page api/overview …latforms), authentication is integrated with the cloud provider’s IAM system. See the platform-specific documentation for supported credential types, required headers, and authentication options. ###… rate-limits Claude Developer Platform · in the page api/rate-limits …st throughput within your rate limits, cache repeated content such as system instructions and prompts, large context documents, tool definitions, and conversation history; see [Prompt caching](https:/… Message Batches API Claude Developer Platform · in the page build-with-claude/batch-processing …PI works When you send a request to the Message Batches API: 1. The system creates a new Message Batch with the provided Messages requests. 2. The batch is then processed asynchronously, with each r… cache-diagnostics Claude Developer Platform · in the page build-with-claude/cache-diagnostics …recent request. A reordered tool, a timestamp interpolated into your system prompt, or an edit to an earlier message can silently invalidate the cache. Without cache diagnostics, the only signal is `… citations Claude Developer Platform · in the page build-with-claude/citations ….build(); Message message = client.messages().create(params); System.out.println(message); ``` ```php PHP $client = new Client(); $response = $client->messages->create( maxToke… claude-in-microsoft-foundry Claude Developer Platform · in the page build-with-claude/claude-in-microsoft-foundry …Azure. Only usage metadata and content flagged by Anthropic’s safety systems egress to Anthropic. Anthropic continues to provide its safety and data commitments. </Note> ## Prerequisites Before you… anthropic-managed Claude Developer Platform · in the page build-with-claude/claude-models-on-google-cloud/anthropic-managed …docs/en/build-with-claude/message-threads) (Beta) * [Mid-conversation system messages](https://platform.claude.com/docs/en/build-with-claude/mid-conversation-system-messages) * [Mid-conversation too… claude-on-amazon-bedrock-legacy Claude Developer Platform · in the page build-with-claude/claude-on-amazon-bedrock-legacy …ock -> block.text().stream()) .forEach(textBlock -> System.out.println(textBlock.text())); } } ``` </CodeGroup> The example in [List available models](… claude-platform-on-aws Claude Developer Platform · in the page build-with-claude/claude-platform-on-aws …n) .region(Region.US_WEST_2) .workspaceId(System.getenv("ANTHROPIC_AWS_WORKSPACE_ID")) .build()) .build(); } ``` </CodeGroup> If you can genera… sent_count = len(messages sent in the compaction request) Claude Developer Platform · in the page build-with-claude/compaction …// by including it in the next request's messages System.out.println(response); ``` ```php PHP $client = new Client(); $messages = [ ['role' => 'user', 'content' =>… compaction-background Claude Developer Platform · in the page build-with-claude/compaction-background …w here so a short conversation compacts. COMPACT_AT_TOKENS = 2500 SYSTEM = "You help design a recipe app's data model. Keep answers short." QUESTIONS = [ "What are the main entities in th… compaction-keep-recent-turns Claude Developer Platform · in the page build-with-claude/compaction-keep-recent-turns …w here so a short conversation compacts. COMPACT_AT_TOKENS = 2500 SYSTEM = "You help design a recipe app's data model. Keep answers short." KEEP_TURNS = 2 QUESTIONS = [ "What are the ma… compaction-on-demand Claude Developer Platform · in the page build-with-claude/compaction-on-demand …rns the block alone with `stop_reason` `"compaction"`. Send the same `system` prompt and `tools` that you use for the rest of the conversation. The summarizer reads them, and if you keep turns after t… compaction-thinking-blocks Claude Developer Platform · in the page build-with-claude/compaction-thinking-blocks …e last summarized message, and it can’t be a mid-conversation `role: "system"` message. Otherwise, the API merges it into the last summarized message. One way to get the first kept message right is to… compaction-threshold Claude Developer Platform · in the page build-with-claude/compaction-threshold …g any // compaction block) to the next request's messages System.out.println(response); } ``` ```php PHP $client = new Client(); $messages = [ ['role' => 'user', 'content… context-editing Claude Developer Platform · in the page build-with-claude/context-editing …cleared, Claude retains access to that information through its memory system and can continue working effectively. To use both features together, enable them in your API request: <CodeGroup> ```ba… context-windows Claude Developer Platform · in the page build-with-claude/context-windows …turn Everything in the request counts toward the context window: the system prompt, every message in `messages` (including tool results, images, and documents), and your tool definitions. The output…