Acquire or renew ownership of a fine-tuning job execution
POST
/v1/fine-tuning/jobs/{jobId}/leaseReturns an opaque fencing token. Only one worker may hold an unexpired lease for an active job.
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
| Name | Location | Type | Required | Description |
|---|---|---|---|---|
| jobId | path | string | Yes | — |
Query parameters
None.
Body schema
Content type: application/json · Required
| Field | Type | Required | Description |
|---|---|---|---|
| owner | string | Yes | — |
| ttlMs | integer | No | — |
What the API returns
Each response code below includes the documented payload shape for the ACP API.
200Fine-tuning job leaseapplication/json
| Field | Type | Required | Description |
|---|---|---|---|
| lease | object | Yes | — |
| lease.jobId | string | Yes | — |
| lease.owner | string | Yes | — |
| lease.token | string | No | — |
| lease.attempt | integer | Yes | — |
| lease.acquiredAt | string | No | — |
| lease.expiresAt | string | Yes | — |
| lease.heartbeatAt | string | No | — |
| job | object | Yes | — |
| job.schemaVersion | integer | No | — |
| job.kind | agent_optimization | No | — |
| job.id | string | Yes | Unique identifier. |
| job.name | string | No | Human-readable name. |
| job.agentId | string | Yes | Agent ID. |
| job.targetAgentId | string | No | — |
| job.environmentId | string | No | Computer ID. |
| job.computerId | string | No | — |
| job.evaluationSetIds | string[] | Yes | — |
| job.instructions | string | No | — |
| job.status | planned | queued | running | verifying | completed | failed | cancelled | Yes | Current lifecycle status. |
| job.phase | string | No | — |
| job.threadId | string | No | Thread ID. |
| job.createdAgentVersionId | string | No | — |
| job.beforeScore | number | No | — |
| job.afterScore | number | No | — |
| job.improvementScore | number | No | — |
| job.costUsd | number | No | — |
| job.costCt | number | No | — |
| job.costTokens | number | No | — |
| job.evaluationRuns | object[] | No | — |
| job.metadata | object | No | Free-form metadata object. |
| job.createdAt | string | No | ISO 8601 timestamp. |
| job.updatedAt | string | No | ISO 8601 timestamp. |
| job.completedAt | string | No | ISO 8601 timestamp. |
409Lease is held by another worker or the job is terminal
None.
Acquire or renew ownership of a fine-tuning job execution
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Response 200
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