---
title: "GET /v1/jobs/{jobId}/lineage"
description: "Read a job's lineage"
full: true
---

**Auth:** required. Send an `ivy_` API key (`Authorization: Bearer ivy_…` or `X-Ivy-Api-Key`), a Clerk session JWT (`Authorization: Bearer …`) or the Clerk `__session` cookie (browser sessions). See [Authentication](/docs/api/authentication).

Lists the recorded inputs of a job you can read: one row per producer job output that fed it, newest first. Each row names the producer job, the producer output and the input slot it filled.

A row's `output` carries that output's data type, quality score and preview only when the output belongs to the row's producer job and you can read that producer job; otherwise `output` is `null`. A job with no recorded lineage returns an empty `lineage` array.

With a project-scoped API key, a job outside the key's projects, or with no project, returns 404, and a producer job outside them is treated as one you cannot read.

## Request

#### Path parameters

- `jobId` (string (uuid)) —
Job UUID.

## Responses

### `200` OK

The job's lineage rows

Response shape:

- `lineage` (object[]) —
Lineage rows, newest first

### `400` Bad Request

The job id is empty

Response shape: `object`

### `401` Unauthorized

Authentication required

Response shape: `object`

### `404` Not Found

The job does not exist, you cannot read it, it is outside your API key's project scope, or the id is not a job UUID. All of these return the same body.

Response shape: `object`

### `429` Too Many Requests

Rate limit exceeded

Response shape: `object`

### `500` Internal Server Error

Reading lineage failed

Response shape: `object`

**curl**

```bash
curl -X GET 'https://ivybiosciences.com/api/v1/jobs/{jobId}/lineage' \
  -H "Authorization: Bearer $IVY_API_KEY"
```

**JavaScript**

```js
const res = await fetch('https://ivybiosciences.com/api/v1/jobs/{jobId}/lineage', {
  method: 'GET',
  headers: {
    'Authorization': `Bearer ${process.env.IVY_API_KEY}`,
  },
});
const data = await res.json();
```

**Python**

```python
import os, requests

res = requests.get(
    "https://ivybiosciences.com/api/v1/jobs/{jobId}/lineage",
    headers={"Authorization": f"Bearer {os.environ['IVY_API_KEY']}"},
)
data = res.json()
```