# Get branch topology

**GET** `/v1/projects/{projectId}/branches/{branchId}/application-topology`

⚠️ Experimental endpoint: this API is in active development and may change at any time without notice. ⚠️

Returns the stored topology graph for the branch — the same shape Composer submitted. Nodes, ports, and edges are returned in deterministic order.

Base URL: `https://api.prisma.io`

Tags: `[Experimental]`

## Authorization

Any ONE of the following options authorizes this operation; every scheme listed within an option is required together.

| Option | Scheme | Type | Sent as | Scopes |
| --- | --- | --- | --- | --- |
| Option 1 | `OAuth2` | `oauth2` | `Authorization: Bearer <access token>` | `offline_access`, `workspace:admin` |
| Option 2 | `Bearer` | `http` | `Authorization: Bearer <token>` (JWT) | — |

### OAuth 2.0 flows

- **OAuth2 · authorizationCode**
  - Authorization URL: `https://auth.prisma.io/authorize`
  - Token URL: `https://auth.prisma.io/token`
  - Refresh URL: `https://auth.prisma.io/token`
  - Scope `offline_access` — Offline access
  - Scope `workspace:admin` — Full access to workspace resources

## Path parameters

| Name | Type | Required | Description |
| --- | --- | --- | --- |
| `projectId` | `string` | Yes | — |
| `branchId` | `string` | Yes | — |

## Responses

| Status | Description | Media type |
| --- | --- | --- |
| `200` | The branch topology. | `application/json` |
| `401` | Missing or invalid authorization token. | `application/json` |
| `404` | Project or branch not found. | `application/json` |

### Example response: 200 — The branch topology.

```json
{
  "data": {
    "contentHash": "string",
    "edges": [
      {
        "family": "communication",
        "from": {
          "direction": "in",
          "logicalId": "string",
          "name": "string"
        },
        "style": "string",
        "to": {
          "direction": "in",
          "logicalId": "string",
          "name": "string"
        }
      }
    ],
    "nodes": [
      {
        "kind": "module",
        "logicalId": "string",
        "parentLogicalId": "string",
        "type": "string"
      }
    ],
    "ports": [
      {
        "contractHash": "string",
        "contractKind": "string",
        "direction": "in",
        "logicalId": "string",
        "name": "string"
      }
    ],
    "writtenAt": "2026-06-09T00:00:00Z"
  }
}
```

### Example response: 401 — Missing or invalid authorization token.

```json
{
  "error": {
    "code": "string",
    "hint": "string",
    "message": "string"
  }
}
```

### Example response: 404 — Project or branch not found.

```json
{
  "error": {
    "code": "string",
    "hint": "string",
    "message": "string"
  }
}
```

## Related pages

- [[Experimental]](./tags/experimental.md)
- [Acquire Alchemy deploy lease](./postv1projectsbyprojectidbranchesbybranchidalchemy-statelease.md)
- [Agents](./tags/agents.md)
- [Alchemy state store version](./getv1projectsbyprojectidbranchesbybranchidalchemy-stateversion.md)
- [Buckets](./tags/buckets.md)
- [Connections](./tags/connections.md)
- [Create a branch](./postv1projectsbyprojectidbranches.md)
- [Create a custom domain](./postv1appsbyappiddomains.md)
- [Create a custom domain](./postv1servicesbyserviceiddomains.md)
- [Create a workspace](./postv1workspaces.md)

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