> 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/schema-related-apis-for-asynchronous-execution/publishing-schema.md).

# Publishing Schema

**`PUT /schemas/push/{schemaId}/publish`**

Publishes the specified schema onto IPFS asynchronously, sending a message with its IPFS CID to the corresponding Hedera topic. Returns a task ID immediately; poll `GET /tasks/{taskId}` for the result.

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

**Permission:** `Permissions.SCHEMAS_SCHEMA_REVIEW`

***

## Request

### Path Parameters

| Parameter  | Type   | Required | Description                                                       |
| ---------- | ------ | -------- | ----------------------------------------------------------------- |
| `schemaId` | string | Yes      | The schema ID (MongoDB ObjectId, e.g. `63e3e5e8a01b3c001234abcd`) |

### Request Body

```json
{
  "version": "1.0.0"
}
```

| Field     | Type   | Required | Description                                                         |
| --------- | ------ | -------- | ------------------------------------------------------------------- |
| `version` | string | Yes      | The version string to assign to the published schema (e.g. `1.0.0`) |

***

## Response

### Success Response

**Status:** `202 Accepted`

```json
{
  "taskId": "63e3e5e8a01b3c001234abcd",
  "expectation": "Publish schema"
}
```

Poll `GET /tasks/{taskId}` to retrieve the result.

### Error Responses

| Status                      | Description                                              |
| --------------------------- | -------------------------------------------------------- |
| `401 Unauthorized`          | Missing or invalid token                                 |
| `403 Forbidden`             | Insufficient permissions or schema owned by another user |
| `404 Not Found`             | Schema not found                                         |
| `422 Unprocessable Entity`  | Schema is already published or version already exists    |
| `500 Internal Server Error` | Unexpected server failure                                |