---
# @generated by sylphx-gen 0.1.0 from contracts@e145cc7cf1bc9605f2b27439e5e17ed76a1a2fd7e7021906a013f7565e4a0cd5. Do not edit.
title: "Create a job run"
description: "`workflows.job_runs.create` (POST /v1/{parent}/job_runs): Starts a run of a Job now."
type: reference
product: jobs
summary: "Starts a run of a Job now."
updated: 2026-09-28
nav: false
---

Starts a run of a Job now. The same `Idempotency-Key` returns the same run for 24h; a Schedule fire uses `{job}:{intended time}`. With concurrency `forbid`, a start while a run is active fails with INVALID_STATE.

- **Path** `POST https://api.sylphx.com/v1/orgs/acme/projects/shop/envs/production/jobs/job/job_runs`
- **Scope** `workflows:run`
- **Effect** `write` — a successful call changes state.
- **Collection** [job_runs](/docs/api/job_runs)
- **Query** `job_run_id`, `validate_only`

## Request

| Field | Type | What it is |
| --- | --- | --- |
| `parent` | `string` | The job to run. Required. |
| `job_run_id` | `string` | The run id, the final name segment; the server assigns one when empty. |
| `job_run` | `JobRun` | The run to start: `args` and `env` override the Job's for this run. Required. |
| `validate_only` | `bool` | Validate and return the result without starting anything. |

### JobRun

| Field | Type | What it is |
| --- | --- | --- |
| `name` | `string` | `orgs/{org}/projects/{project}/envs/{env}/jobs/{job}/job_runs/{job_run}`. |
| `meta` | `ResourceMeta` | Resource metadata. |
| `args` | `string[]` | Arguments of this run (the Job's when empty). |
| `env` | `map<string, string>` | Environment overrides of this run. |
| `schedule_time` | `timestamp` | Start no earlier than this: set it directly, or through `start_delay`; at most 365 days ahead. A run cancelled before then makes no attempt. |
| `start_delay` | `duration` | Start no earlier than this long after the request. |

### ResourceMeta

| Field | Type | What it is |
| --- | --- | --- |
| `labels` | `map<string, string>` | Caller-writable, indexed labels (AIP-122 label rules). |
| `annotations` | `map<string, string>` | Caller-writable, unindexed annotations. |
| `display_name` | `string` | Caller-writable human-readable name. |

## Response

| Field | Type | What it is |
| --- | --- | --- |
| `name` | `string` | `orgs/{org}/projects/{project}/envs/{env}/jobs/{job}/job_runs/{job_run}`. |
| `uid` | `string` | `jrun_<cell><ulid>`; never reused. Output only. |
| `meta` | `ResourceMeta` | Resource metadata. |
| `job_generation` | `int64` | The Job generation the run pinned. Output only. |
| `resolved_image` | `string` | The image digest the run executes. Output only. |
| `args` | `string[]` | Arguments of this run (the Job's when empty). |
| `env` | `map<string, string>` | Environment overrides of this run. |
| `state` | `JobRunState` | The run's lifecycle state. Output only. One of `queued`, `running`, `succeeded`, `failed`, `cancelled`, `timed_out`. |
| `exit_code` | `int32` | The last attempt's exit code, once it exited. Output only. |
| `attempt_count` | `int32` | Attempts made so far. Output only. |
| `termination_reason` | `string` | Why the last attempt ended other than by exiting, for example `OOMKilled` or `Evicted`. Output only. |
| `schedule_fire` | `ScheduleFireRef` | Set when a Schedule fire started the run. Output only. |
| `create_time` | `timestamp` | When the run was accepted. Output only. |
| `start_time` | `timestamp` | When the first attempt started. Output only. |
| `end_time` | `timestamp` | When the run closed. Output only. |
| `usage` | `JobRunUsage` | Metered usage across attempts. Output only. |
| `message` | `string` | Why the run failed or was refused, when it did. Output only. |
| `schedule_time` | `timestamp` | Start no earlier than this: set it directly, or through `start_delay`; at most 365 days ahead. A run cancelled before then makes no attempt. |
| `start_delay` | `duration` | Start no earlier than this long after the request. |

### ResourceMeta

| Field | Type | What it is |
| --- | --- | --- |
| `generation` | `int64` | Increases by one on every change to `spec`. Output only. |
| `etag` | `string` | Strong ETag (AIP-154): changes on any change to spec, status, or metadata. Send it back as `If-Match` or `etag` to make Update and Delete conditional; a mismatch fails with ABORTED / 409 `ETAG_MISMATCH`. Output only. |
| `create_time` | `timestamp` | When the Resource was created. Output only. |
| `update_time` | `timestamp` | When the Resource last changed. Output only. |
| `delete_time` | `timestamp` | Set while the Resource is being deleted. Output only. |
| `labels` | `map<string, string>` | Caller-writable, indexed labels (AIP-122 label rules). |
| `annotations` | `map<string, string>` | Caller-writable, unindexed annotations. |
| `display_name` | `string` | Caller-writable human-readable name. |
| `creator` | `string` | The principal that created the Resource. Output only. |

### ScheduleFireRef

| Field | Type | What it is |
| --- | --- | --- |
| `schedule` | `string` | The Schedule. Output only. |
| `intended_time` | `timestamp` | The instant the fire was due. Output only. |

### JobRunUsage

| Field | Type | What it is |
| --- | --- | --- |
| `billed_duration` | `duration` | Summed wall time of every attempt from start to exit; billed as this duration on `instance_type` (`workflows.job.seconds`). Output only. |
| `instance_type` | `string` | The instance type the attempts ran on. Output only. |

## Errors

- [`UNAUTHENTICATED`](/docs/api/errors/UNAUTHENTICATED) — No valid key or token was presented.
- [`PERMISSION_DENIED`](/docs/api/errors/PERMISSION_DENIED) — The key lacks the method's permission.
- [`RESOURCE_NOT_FOUND`](/docs/api/errors/RESOURCE_NOT_FOUND) — The named Resource does not exist or is not visible.
- [`UNKNOWN_FIELD`](/docs/api/errors/UNKNOWN_FIELD) — The request has a field the schema does not know.
- [`INVALID_FIELD`](/docs/api/errors/INVALID_FIELD) — A field failed validation.
- [`INVALID_STATE`](/docs/api/errors/INVALID_STATE) — The Resource is in a state that forbids the call.
- [`RESOURCE_ALREADY_EXISTS`](/docs/api/errors/RESOURCE_ALREADY_EXISTS) — A Resource with this name exists.
- [`IDEMPOTENCY_KEY_REUSED`](/docs/api/errors/IDEMPOTENCY_KEY_REUSED) — An Idempotency-Key was reused with another body.
- [`IDEMPOTENCY_IN_PROGRESS`](/docs/api/errors/IDEMPOTENCY_IN_PROGRESS) — The first call with this Idempotency-Key is still running.
- [`PLAN_LIMIT_REACHED`](/docs/api/errors/PLAN_LIMIT_REACHED) — The plan's limit is reached.

Every error arrives in the body [Errors](/docs/platform/errors) describes.

## Examples

**cURL**

```curl
curl -X POST "https://api.sylphx.com/v1/orgs/acme/projects/shop/envs/production/jobs/job/job_runs" \
  -H "Authorization: Bearer $SYLPHX_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{}'
```

**TypeScript**

```ts
const response = await sylphx.workflows.jobRuns.create({ jobRun: {}, parent: 'orgs/acme/projects/shop/envs/production/jobs/job' })
```

**Rust**

```rust
let mut req = sylphx::workflows::CreateJobRunRequest::default();
req.job_run = Some(Default::default());
req.parent = "orgs/acme/projects/shop/envs/production/jobs/job".to_string();
let response = sx.workflows().job_runs().create(req).await?;
```

**CLI**

```bash
sylphx workflows job-runs run --parent orgs/acme/projects/shop/envs/production/jobs/job
```

**MCP**

```json
{ "method_id": "workflows.job_runs.create", "args": {"job_run":{},"parent":"orgs/acme/projects/shop/envs/production/jobs/job"} }
```