> For the complete documentation index, see [llms.txt](https://dev.guardian.hedera.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://dev.guardian.hedera.com/developer-tools-and-resources/api-reference/apis-related-to-formula-linked/returns-a-list-of-formulas.md).

# Returns a list of formulas

**`GET /api/v1/formulas`**

Returns a paginated list of all formulas visible to the authenticated user.

**Authentication:** Bearer token required (`Authorization: Bearer <token>`)

**Permission:** `Permissions.FORMULAS_FORMULA_READ`

***

## Request

### Query Parameters

| Parameter   | Type   | Required | Default | Description                         |
| ----------- | ------ | -------- | ------- | ----------------------------------- |
| `pageIndex` | number | No       | 0       | Zero-based page index               |
| `pageSize`  | number | No       | 20      | Number of items to return per page  |
| `policyId`  | string | No       | —       | Filter formulas by linked policy ID |

***

## Response

### Success Response

**Status:** `200 OK`

Total item count is returned in the `X-Total-Count` response header.

```json
[
  {
    "id": "63e3e5e8a01b3c001234abcd",
    "uuid": "c4a3b2d1-e5f6-7890-abcd-ef1234567890",
    "name": "Carbon Credit Calculator",
    "description": "Calculates carbon credits based on emission factors",
    "status": "PUBLISHED",
    "owner": "did:hedera:testnet:zHcDLGFNymFAJiMBKnpbHDgjvTn6yZnwkPPeFhtJBECH_0.0.4532001",
    "policyId": "63e3e5e8a01b3c001234abcd"
  }
]
```

### Error Responses

| Status                      | Description               |
| --------------------------- | ------------------------- |
| `401 Unauthorized`          | Missing or invalid token  |
| `403 Forbidden`             | Insufficient permissions  |
| `500 Internal Server Error` | Unexpected server failure |