v51

OpenAPI 3.1.0raw.githubusercontent.com2026-08-018486293.2 KB

messages

Create Message

Anthropic Messages API-compatible endpoint.

Supports MCP tool-use loops, sandboxed code execution, and SearXNG web_search in both standalone mode and hybrid mode. Hybrid-mode requests resolve credentials via the platform service and get multi-attempt fallback across the resolved route, tool-loop requests included (fallback applies up to the pre-lock-in point, same as chat).

post/v1/messages

Request body

cache_controlobject nullable

max_tokensinteger required

max_tool_iterationsinteger nullable

mcp_server_idsstring[] nullable

messagesobject[] required

metadataobject nullable

modelstring required

output_formatobject nullable

session_labelstring nullable

Optional caller-supplied label for cost attribution (per run, experiment, or conversation). In hybrid mode it is forwarded onto the platform usage report so spend can be sliced by session without standing up OpenTelemetry. Stripped before the request is forwarded upstream to the provider. Has no effect in standalone mode, where there is no platform to report it to.

stop_sequencesstring[] nullable

streamboolean

temperaturenumber nullable

thinkingobject nullable

tool_choiceobject nullable

toolsobject[] nullable

tools_headerstring nullable

top_kinteger nullable

top_pnumber nullable

Response

Successful Response

{"stackTrail":"paths:/v1/messages:post:responses:200:content:application/json:schema","oasType":"schema","type":"unknown"}