Queue a steering message for a run

POST/v1/threads/{threadId}/runs/{runId}/steering

Record checkpoint or interrupt delivery intent. A future durable run coordinator consumes the queued delivery; this endpoint does not claim immediate runtime delivery.

How to call this endpoint

Every ACP API request uses bearer authentication. The examples here show the actual request path, auth header, and body shape that the platform expects.

Path, query, and header parameters

These parameters control which ACP object the endpoint acts on and how the request is processed.

Path parameters
NameLocationTypeRequiredDescription
threadIdpathstringYesThread ID
runIdpathstringYes
Query parameters
None.

Body schema

Content type: application/json · Required

FieldTypeRequiredDescription
contentstringYesRaw text content.
modecheckpoint | interruptNo
intentstringNo
reasonstringNo
idempotencyKeystringNo
clientMessageIdstringNo

What the API returns

Each response code below includes the documented payload shape for the ACP API.

202Steering delivery queued for a coordinatorapplication/json
None.
409The explicitly targeted run is already terminal
None.
Queue a steering message for a run
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Response 202
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