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Get a turn

Behavior

Served only when turn control is on for your environment; until then the route answers 404 not_found. The read changes nothing. Poll it every two seconds while the status is running, waiting_on_tools, waiting_on_confirmation or stopping. An application that runs its own tools reads it before each tool dispatch and starts nothing more once the status is stopping or at rest. The turn object and its statuses are on Stop a turn.

Authorizations

Authorization
string
header
required

Send the key as Authorization: Bearer <key>. Two kinds of key exist.

Organization keys are issued in the portal (Settings, then API keys), each bound to one environment, shaped nx_<environment slug>_<64 hex>. They carry no capabilities and pass every capability check, with one exception: routes under /records, /actions, /operations, /api/v1/engines/{id}/opportunities, /api/v1/graph and /api/v1/catalog/documents accept an organization key only when its environment is live, and refuse any other with 403 scoped_key_required. Revocation takes effect within 60 seconds.

Scoped keys are issued by Nexio on request, shaped nxsk_v1_<24 hex key id>_<43 character secret>. Each is bound to one org, one environment, a set of engines and a set of capabilities. A malformed, unknown or revoked nxsk_ key fails with 401 and is never retried as an organization key. Revocation takes effect on the next request. A scoped key without a route's capability gets 403 insufficient_capability; a scoped key not bound to the engine gets 403 engine_binding_forbidden.

Key-grantable capabilities: engines:read, runs:write, runs:read, runs:defensibility:read, runs:test, catalog:read, catalog:documents:read, webhooks:manage, conversations:use, conversations:export, records:read, records:opportunities:run, actions:write, actions:read, graph:read, records:analyze.

Routes that accept organization keys only (every scoped key gets 403 insufficient_capability): environment management, engine create, update, configuration and publish, and conversation instance authoring. Each operation description names the capability a scoped key needs.

Path Parameters

instance_slug
string
required

Conversation instance identifier slug (e.g. platform-assistant).

conversation_id
string<uuid>
required
turn_id
string<uuid>
required

The turn id, from the turn_id of the conversation frame or of a stored message.

Query Parameters

end_user
string
required

The asserted end-user identity the conversation must belong to. Missing or blank answers 400 invalid_request; another end user's value answers 404 conversation_not_found.

Response

The turn.

The body of the turn read and of Stop.

turn
object
required

One turn of a conversation, as served by conversation detail, the turn read and Stop. status is derived when it is read: a turn not at rest whose stop was requested is stopping, and a handoff paused 10 minutes or more with no stop requested is failed with stop_reason handoff_lost. completed, stopped and failed are at rest.

Last modified on September 29, 2026