Run a conversational turn (streaming)
Receives the running thread (AI SDK UIMessages) and streams the assistant turn (UIMessage stream over SSE). Inference runs on the org's configured models: API-key models are routed through the llm-proxy (key injected server-side), OAuth-subscription models are called natively at the provider's own base URL with the access token held in memory. Either way usage is metered server-side; tool calls dispatch through /api/mcp with the caller's own permissions. Message persistence is server-owned: the user turn is persisted before inference and the assistant turn when the stream finalizes (survives client disconnect). Rate limited (20/min per caller). Not invocable over MCP (streaming).
/api/chatCookie session from Better Auth. Requires X-Org-Id header for org-scoped routes.
In: cookie
Header Parameters
Organization ID. Required for cookie auth. Not needed for API key auth (org resolved from key).
uuidSpace ID. Required for space-scoped routes (agents, runs, schedules, and space-scoped module routes). Not needed for API key auth (space resolved from key).
Org model (preset id) override; defaults to the org default model.
Request Body
application/json
curl -X POST "https://your-instance/api/chat" \ -H "Content-Type: application/json" \ -d '{ "messages": [ {} ] }'"string"{
"type": "https://docs.appstrate.dev/errors/validation-failed",
"title": "Validation Failed",
"status": 400,
"detail": "name: Invalid input: expected string, received undefined (+2 more)",
"code": "validation_failed",
"request_id": "req_abc123",
"errors": [
{
"field": "name",
"code": "required",
"message": "Invalid input: expected string, received undefined"
},
{
"field": "email",
"code": "invalid_format",
"message": "Invalid email address"
},
{
"field": "age",
"code": "invalid_type",
"message": "Invalid input: expected number, received string"
}
]
}{
"type": "http://example.com",
"title": "string",
"status": 0,
"detail": "string",
"instance": "string",
"code": "string",
"request_id": "string",
"param": "string",
"retry_after": 0,
"errors": [
{
"field": "string",
"code": "string",
"message": "string",
"title": "string",
"candidate_connections": [
{
"id": "string",
"label": "string",
"account_id": "string",
"owned_by_actor": true,
"needs_reconnection": true
}
],
"connection_id": "string",
"missing_scopes": [
"string"
],
"owned_by_actor": true,
"required_scopes": [
"string"
],
"auth_key": "string",
"required_auth_key": "string",
"available_auth_keys": [
"string"
],
"connect_url": "http://example.com",
"expiresAt": "2019-08-24T14:15:22Z",
"packageId": "string"
}
]
}{
"type": "https://docs.appstrate.dev/errors/forbidden",
"title": "Forbidden",
"status": 403,
"detail": "Insufficient permissions",
"code": "forbidden",
"request_id": "req_abc123"
}{
"type": "https://docs.appstrate.dev/errors/not-found",
"title": "Not Found",
"status": 404,
"detail": "Resource not found",
"code": "not_found",
"request_id": "req_abc123"
}{
"type": "http://example.com",
"title": "string",
"status": 0,
"detail": "string",
"instance": "string",
"code": "string",
"request_id": "string",
"param": "string",
"retry_after": 0,
"errors": [
{
"field": "string",
"code": "string",
"message": "string",
"title": "string",
"candidate_connections": [
{
"id": "string",
"label": "string",
"account_id": "string",
"owned_by_actor": true,
"needs_reconnection": true
}
],
"connection_id": "string",
"missing_scopes": [
"string"
],
"owned_by_actor": true,
"required_scopes": [
"string"
],
"auth_key": "string",
"required_auth_key": "string",
"available_auth_keys": [
"string"
],
"connect_url": "http://example.com",
"expiresAt": "2019-08-24T14:15:22Z",
"packageId": "string"
}
]
}{
"type": "https://docs.appstrate.dev/errors/rate-limited",
"title": "Rate Limited",
"status": 429,
"detail": "Too many requests. Please try again shortly.",
"code": "rate_limited",
"request_id": "req_abc123",
"retry_after": 30
}{
"type": "http://example.com",
"title": "string",
"status": 0,
"detail": "string",
"instance": "string",
"code": "string",
"request_id": "string",
"param": "string",
"retry_after": 0,
"errors": [
{
"field": "string",
"code": "string",
"message": "string",
"title": "string",
"candidate_connections": [
{
"id": "string",
"label": "string",
"account_id": "string",
"owned_by_actor": true,
"needs_reconnection": true
}
],
"connection_id": "string",
"missing_scopes": [
"string"
],
"owned_by_actor": true,
"required_scopes": [
"string"
],
"auth_key": "string",
"required_auth_key": "string",
"available_auth_keys": [
"string"
],
"connect_url": "http://example.com",
"expiresAt": "2019-08-24T14:15:22Z",
"packageId": "string"
}
]
}