Decide a Metronome user approval
POST
/v1/metronomes/{metronomeId}/runs/{runId}/approvals/{approvalId}/decisionAtomically approve or reject a pending User Approval node. The decision completes the durable approval checkpoint and requeues the immutable run on the selected branch. Repeating the same decision is idempotent.
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 |
|---|---|---|---|---|
| metronomeId | path | string | Yes | Metronome workflow ID |
| runId | path | string | Yes | — |
| approvalId | path | string | Yes | — |
Query parameters
None.
Body schema
Content type: application/json · Required
| Field | Type | Required | Description |
|---|---|---|---|
| decision | approved | rejected | Yes | — |
What the API returns
Each response code below includes the documented payload shape for the ACP API.
200Approval decision persisted and workflow queued to resumeapplication/json
| Field | Type | Required | Description |
|---|---|---|---|
| object | string | Yes | — |
| data | object | Yes | — |
| data.approval | object | Yes | — |
| data.approval.id | string | Yes | Unique identifier. |
| data.approval.runId | string | Yes | — |
| data.approval.metronomeId | string | Yes | — |
| data.approval.nodeId | string | Yes | — |
| data.approval.approverUserId | string | Yes | — |
| data.approval.organizationId | string | No | — |
| data.approval.createdByUserId | string | No | — |
| data.approval.status | pending | approved | rejected | cancelled | Yes | Current lifecycle status. |
| data.approval.message | string | Yes | Message text. |
| data.approval.decisionByUserId | string | No | — |
| data.approval.decidedAt | string | No | — |
| data.approval.createdAt | string | No | ISO 8601 timestamp. |
| data.approval.updatedAt | string | No | ISO 8601 timestamp. |
| data.run | object | Yes | — |
| data.run.id | string | No | Unique identifier. |
| data.run.metronomeId | string | No | — |
| data.run.userId | string | No | User ID. |
| data.run.organizationId | string | No | — |
| data.run.createdByUserId | string | No | — |
| data.run.triggerType | string | No | — |
| data.run.versionId | string | No | — |
| data.run.snapshotId | string | No | Snapshot ID. |
| data.run.runKind | workflow | node_test | slice_test | No | — |
| data.run.invocationSource | string | No | — |
| data.run.executionSelection | object | No | — |
| data.run.effectMode | execute | preview | No | — |
| data.run.initiatedByUserId | string | No | — |
| data.run.requestFingerprint | string | No | — |
| data.run.triggerEventId | string | No | — |
| data.run.idempotencyKey | string | No | — |
| data.run.status | queued | running | waiting_approval | paused | completed | failed | cancelled | No | Current lifecycle status. |
| data.run.input | object | No | — |
| data.run.output | object | No | — |
| data.run.error | string | No | — |
| data.run.startedAt | string | No | ISO 8601 timestamp. |
| data.run.queuedAt | string | No | — |
| data.run.nextAttemptAt | string | No | — |
| data.run.lockedAt | string | No | — |
| data.run.lockedBy | string | No | — |
| data.run.attemptCount | integer | No | — |
| data.run.maxAttempts | integer | No | — |
| data.run.timeoutMs | integer | No | — |
| data.run.attachedProjectId | string | No | — |
| data.run.attachedTicketId | string | No | — |
| data.run.completedAt | string | No | ISO 8601 timestamp. |
| data.run.createdAt | string | No | ISO 8601 timestamp. |
| data.run.updatedAt | string | No | ISO 8601 timestamp. |
| data.run.approvals | object[] | No | — |
| data.run.approvals[].id | string | Yes | Unique identifier. |
| data.run.approvals[].runId | string | Yes | — |
| data.run.approvals[].metronomeId | string | Yes | — |
| data.run.approvals[].nodeId | string | Yes | — |
| data.run.approvals[].approverUserId | string | Yes | — |
| data.run.approvals[].organizationId | string | No | — |
| data.run.approvals[].createdByUserId | string | No | — |
| data.run.approvals[].status | pending | approved | rejected | cancelled | Yes | Current lifecycle status. |
| data.run.approvals[].message | string | Yes | Message text. |
| data.run.approvals[].decisionByUserId | string | No | — |
| data.run.approvals[].decidedAt | string | No | — |
| data.run.approvals[].createdAt | string | No | ISO 8601 timestamp. |
| data.run.approvals[].updatedAt | string | No | ISO 8601 timestamp. |
| data.idempotent | boolean | Yes | — |
400Invalid approval decision
None.
403The caller is not the assigned approver or workflow owner
None.
404Workflow, run, or approval request not found
None.
409Approval already has a conflicting decision or cannot resume safely
None.