--- title: Get chat messages url: https://platform.claude.com/docs/en/api/compliance/apps/chats/messages/list --- # Get chat messages **GET** `/v1/compliance/apps/chats/{claude_chat_id}/messages` Retrieves message history and file metadata for a specific chat. ## Path parameters - `claude_chat_id: string` The chat ID (tagged ID, e.g., claude_chat_abc123) ## Query parameters - `after_id: optional string` Pagination cursor for retrieving the next page of results. To paginate, pass the `last_id` value from the most recent response. Clients should treat this value as an opaque string and not attempt to parse or interpret its contents, as the format may change without notice. - `before_id: optional string` Pagination cursor for retrieving the previous page of results. To paginate, pass the `first_id` value from the most recent response. Clients should treat this value as an opaque string and not attempt to parse or interpret its contents, as the format may change without notice. - `created_at: optional object` - `gt: optional string` Filter messages created after this time (RFC 3339 format) format: date-time - `gte: optional string` Filter messages created at or after this time (RFC 3339 format) format: date-time - `lt: optional string` Filter messages created before this time (RFC 3339 format) format: date-time - `lte: optional string` Filter messages created at or before this time (RFC 3339 format) format: date-time - `limit: optional number` Maximum results (max: 1000). When omitted, the full result set is returned in one response. maximum: 1000, minimum: 1 - `order: optional "asc" or "desc"` Sort direction for messages within the response. `asc` (the default) returns oldest-first; `desc` returns newest-first. default: asc - `"asc"` - `"desc"` - `tool_result_max_chars: optional number` Maximum characters returned per tool-result text item. Items longer than this are shortened and the block's `truncated` field is set. Pass -1 to disable the limit. default: 10000, minimum: -1 - `tool_use_input_max_chars: optional number` Maximum characters of JSON-encoded tool input returned per tool_use block. Inputs longer than this are shortened and the block's `truncated` field is set. Pass -1 to disable the limit. default: 10000, minimum: -1 - `updated_at: optional object` - `gt: optional string` Filter messages updated after this time (RFC 3339 format) format: date-time - `gte: optional string` Filter messages updated at or after this time (RFC 3339 format) format: date-time - `lt: optional string` Filter messages updated before this time (RFC 3339 format) format: date-time - `lte: optional string` Filter messages updated at or before this time (RFC 3339 format) format: date-time ## Headers - `"anthropic-version": optional string` The version of the Claude API you want to use. Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning). - `"x-api-key": optional string` ## Returns - `id: string` Chat ID - `chat_messages: array of object` Array of chat messages in order of created_at - `id: string` Unique identifier for the message e.g. 'claude_chat_msg_abcd1234' - `artifacts: array of object or null` Versioned documents generated or updated by the assistant in this message. Download via `GET /v1/compliance/apps/artifacts/{artifact_version_id}/content`. - `id: string` Artifact ID e.g. 'claude_artifact_abc123' - `artifact_type: string or null` MIME-like artifact type e.g. 'application/vnd.ant.code' - `title: string or null` Artifact title - `version_id: string` Artifact version ID e.g. 'claude_artifact_version_abc123' - `content: array of object or object or object` Content blocks within the message - `Text object` Text content block. - `type: "text"` default: text - `text: string` Text content from human or assistant - `thinking_redacted: boolean` True when content enclosed in the assistant's internal-reasoning tags (or the tag markup itself) was removed from `text` during export. Removal never occurs with this field false. Always false on human messages, whose text is exported verbatim. default: false - `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` Tool invocation requested by the assistant. - `type: "tool_use"` default: tool_use - `id: string or null` Tool-use ID, e.g. 'toolu_01AbC...' - `input: string` Arguments passed to the tool, as a JSON-encoded string. May be shortened — see the `truncated` field - `integration_name: string or null` Name of the integration that provides this tool, when applicable - `mcp_server_url: string or null` Base URL (scheme, host, and path only) of the MCP server that provides this tool, when applicable - `name: string` Name of the tool invoked - `truncated: boolean` True when `input` was shortened. Pass the endpoint's tool-use input max parameter as -1 to request full content, subject to any server-side maximum the endpoint enforces. default: false - `ToolResult object` Result returned by a tool invocation. - `type: "tool_result"` default: tool_result - `content: array of object` Text content returned by the tool. Generated files are surfaced via the message's `generated_files` list; other non-text item types (including images and links) are omitted. - `type: "text"` default: text - `text: string` Text returned by the tool - `integration_name: string or null` Name of the integration that provides this tool, when applicable - `is_error: boolean` True when the tool reported an error - `mcp_server_url: string or null` Base URL (scheme, host, and path only) of the MCP server that provides this tool, when applicable - `name: string` Name of the tool that produced this result - `tool_use_id: string or null` ID of the tool_use block this result responds to - `truncated: boolean` True when one or more text items in `content` were shortened. Pass the endpoint's tool-result max parameter as -1 to request full content, subject to any server-side maximum the endpoint enforces. default: false - `created_at: string` Message creation timestamp - For human: when they sent the message, For assistant: when it completed the last content block format: date-time - `files: array of object or null` Binary file attachments uploaded by the user. Download via `GET /v1/compliance/apps/chats/files/{claude_file_id}/content`. - `id: string` File ID - `created_at: string` File creation timestamp format: date-time - `filename: string` Display name of the file - `md5: string or null` Lowercase hex MD5 of the file's preferred downloadable variant, as recorded at upload time. Null when no stored hash is available. - `mime_type: string or null` MIME type of the file's preferred downloadable variant (e.g. 'application/pdf') - `size_bytes: number or null` Size in bytes of the file's preferred downloadable variant, if known. Null for older files uploaded before size was recorded. - `generated_files: array of object or null` Downloadable files the assistant created via tool use (e.g. PDF, spreadsheet, slide deck). Distinct from `files`, which are uploads attached to the message. Download via `GET /v1/compliance/apps/chats/generated-files/{claude_gen_file_id}/content`. - `id: string` Opaque generated-file id, e.g. 'claude_gen_file_abc123'. Treat as an opaque string; the encoding may change without notice. - `filename: string` Display name of the generated file - `md5: string or null` Lowercase hex MD5 of the generated file, when available. Null when no stored hash is available. - `mime_type: string or null` MIME type reported by the tool that produced the file - `size_bytes: number or null` Size in bytes of the generated file, when available. Null when the file has expired or size is not recorded. - `role: "assistant" or "user"` Message sender (user or assistant) - `"assistant"` - `"user"` - `created_at: string` Creation timestamp format: date-time - `deleted_at: string or null` Deletion timestamp if deleted format: date-time - `first_id: string or null` Opaque pagination cursor for the first message in the current result set. Pass as `before_id` on the next request to page backwards. Clients should treat this value as an opaque string and not attempt to parse or interpret its contents, as the format may change without notice. - `has_more: boolean` Whether more chat messages exist beyond the current result set. Use `last_id` as `after_id` in a follow-up request to page forward. default: false - `href: string` URL to view this chat in claude.ai - `last_id: string or null` Opaque pagination cursor for the last message in the current result set. Pass as `after_id` on the next request to page forwards. Clients should treat this value as an opaque string and not attempt to parse or interpret its contents, as the format may change without notice. - `model: string or null` Model selected for this chat (e.g. 'claude-opus-5'). May be null for legacy chats that never had a model recorded. - `name: string` Chat name - `organization_uuid: string` Organization UUID this chat belongs to - `project_id: string or null` Project ID this chat belongs to - `updated_at: string` Last update timestamp format: date-time - `user: object or null` The user who created the chat. Null when the API key is restricted to one organization and the creator is no longer a member of it (for example, after they were removed from it). A key for the whole parent organization returns the creator's `id` and current `email_address` for every chat; on the list endpoint, pass `organization_ids[]` to keep the results to one organization. For the email address the creator had when the chat was created, query `GET /v1/compliance/activities` with `activity_types[]=claude_chat_created` and a `created_at` window around the chat's `created_at`, find the event whose `claude_chat_id` matches this chat's `id`, and read `actor.email_address`. These events exist only for chats created after compliance logging was enabled for the organization. - `id: string` User identifier - `email_address: string` User's email address - `organization_id: string` **Deprecated** Organization ID this chat belongs to ## Example ```bash curl https://api.anthropic.com/v1/compliance/apps/chats/$CLAUDE_CHAT_ID/messages \ -H "Authorization: Bearer $ANTHROPIC_COMPLIANCE_API_KEY" ``` ### Response (200) ```json { "id": "claude_chat_abc123", "name": "Product Requirements Discussion", "created_at": "2025-06-07T08:09:10Z", "updated_at": "2025-06-07T08:09:11Z", "organization_id": "org_abc123", "organization_uuid": "abcdef01-2345-6789-abcd-ef0123456789", "project_id": "claude_proj_xyz789", "model": "claude-opus-5", "user": { "id": "user_xyz456", "email_address": "user@example.com" }, "href": "https://claude.ai/chat/abcdef01-2345-6789-abcd-ef0123456789", "chat_messages": [ { "id": "claude_chat_msg_abc123", "role": "user", "created_at": "2025-06-07T08:09:10Z", "content": [ { "type": "text", "text": "Can you help me draft requirements for our new dashboard feature?" } ], "files": [ { "id": "claude_file_xyz789", "filename": "dashboard_mockup_v1.pdf", "mime_type": "application/pdf", "size_bytes": 12345, "md5": "5d41402abc4b2a76b9719d911017c592", "created_at": "2025-06-07T08:09:10Z" } ] }, { "id": "claude_chat_msg_def456", "role": "assistant", "created_at": "2025-06-07T08:09:11Z", "content": [ { "type": "text", "text": "I'd be happy to help you draft requirements for your dashboard feature..." } ], "artifacts": [ { "id": "claude_artifact_abc123", "version_id": "claude_artifact_version_xyz789", "title": "Dashboard Requirements Draft", "artifact_type": "text/markdown" } ] } ], "has_more": false, "first_id": "eyJtc2dfdXVpZCI6ICIwZjcwYjA2Ni0uLi4ifQ==", "last_id": "eyJtc2dfdXVpZCI6ICJhNGUwYjE3Mi0uLi4ifQ==" } ```