# List blocks

> List top-level blocks in a project

- Source: https://www.taskade.com/docs/actions/list-blocks
- Section: Action API
- Endpoint: `POST /listBlocks` (API v2)
- Index of all pages: https://www.taskade.com/docs/llms.txt

## POST `/listBlocks`

List top-level blocks in a project

Base URL: `https://www.taskade.com/api/v2`

### Authentication

Send a personal access token or an OAuth 2.0 access token as a bearer token. Create a personal access token at [taskade.com/settings/api](https://www.taskade.com/settings/api).

```http
Authorization: Bearer tskdp_your_token_here
```

### Request body

`application/json`

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `projectId` | `string` | Yes | The project ID to list blocks for |
| `limit` | `number` | No | — |
| `after` | `string` | No | Cursor: block ID to get blocks after (do not combine with before) |
| `before` | `string` | No | Cursor: block ID to get blocks before (do not combine with after) |

### Example request

```bash
curl -X POST "https://www.taskade.com/api/v2/listBlocks" \
  -H "Authorization: Bearer $TASKADE_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"projectId":"<projectId>"}'
```

### Responses

#### `200` — Default response

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `ok` | `boolean` | Yes | — |
| `items` | `object[]` | Yes | — |
| `items[].id` | `string` | Yes | — |
| `items[].text` | `string` | No | — |
| `items[].completed` | `boolean` | Yes | — |

A nested field marked Yes is required whenever its parent object is present.

### Errors

Errors return an `ok: false` envelope. Rate limiting returns `429` with `x-rate-limit-limit`, `x-rate-limit-remaining` and `x-rate-limit-reset` headers. `x-rate-limit-reset` is the number of seconds until the window reopens. `Retry-After` is not sent, so schedule retries from `x-rate-limit-reset`; retrying sooner will fail again.

```json
{ "ok": false, "message": "Unauthorized", "code": "UNAUTHORIZED" }
```

Rate limits for this version: enforced per endpoint; ceilings are not published and can change without notice. A `429` response carries `x-rate-limit-limit`, `x-rate-limit-remaining`, and `x-rate-limit-reset` (seconds until the window reopens). Back off from those headers rather than hardcoding numbers. If you need sustained throughput, prefer batching (operations like `/createTask` accept arrays) over tightening polling loops. See [Rate limits](https://www.taskade.com/docs/getting-started/action-api-guide#rate-limits).