# Verify licensing

URL: https://docs.hanzo.ai/docs/openapi/licensing/post-licensing-verify

> Checks a license token online: signature, schema, expiry, app_id and the revocation list.

`POST /v1/licensing/verify`

> [Licensing →](https://docs.hanzo.ai/docs/openapi/licensing) · [All API references →](https://docs.hanzo.ai/docs/openapi) · [Get started →](https://docs.hanzo.ai/docs/guides)

|               |                                            |
| ------------- | ------------------------------------------ |
| **Address**   | `https://api.hanzo.ai/v1/licensing/verify` |
| **Method**    | `POST`                                     |
| **Operation** | `post_licensing_verify`                    |
| **Auth**      | `Authorization: Bearer $HANZO_API_KEY`     |

Checks a license token online: signature, schema, expiry, app\_id and
the revocation list.

It is UNAUTHENTICATED and always answers 200 — a bad token is `valid:false`
with a reason rather than an error status, because "is this token good" is a
question anyone may ask about a credential they already hold and the answer is
the same either way. It is also OPTIONAL: the engine verifies OFFLINE against
the published public key (GET /v1/licensing/pubkey) and needs this endpoint
only to learn about revocation, so an outage here never stops a paid customer
working.

## Request

2 fields, body `application/json` (required).

| Field   | In   | Type   | Required | Description                                               |
| ------- | ---- | ------ | -------- | --------------------------------------------------------- |
| `app`   | body | string | —        | App overrides the app\_id the token is expected to carry. |
| `token` | body | string | yes      | Token is the license token to check.                      |

## Response

| Status    | Body                     | Meaning |
| --------- | ------------------------ | ------- |
| `200`     | licensing.VerifyResponse | ok      |
| `default` | problem-details          | refused |

`200` body — 9 fields.

| Field               | In   | Type            | Always | Description                                                                           |
| ------------------- | ---- | --------------- | ------ | ------------------------------------------------------------------------------------- |
| `app_id`            | body | string          | —      | AppID is the brand the token runs under.                                              |
| `exp`               | body | integer (int64) | —      | Exp is the token's expiry, Unix seconds.                                              |
| `features`          | body | string\[]       | —      | Features are the capability grants the token carries.                                 |
| `fingerprint_bound` | body | boolean         | —      | Bound reports that the token carries a device binding.                                |
| `holder`            | body | string          | —      | Holder is who the token was issued to.                                                |
| `nonce`             | body | string          | —      | Nonce uniquely identifies the token.                                                  |
| `reason`            | body | string          | —      | Reason says why an invalid token was rejected.                                        |
| `revoked`           | body | boolean         | —      | Revoked reports that the signature was good but the token has been revoked.           |
| `valid`             | body | boolean         | —      | Valid is the single answer: signature, schema, expiry, app and revocation all passed. |

Failure carries the platform error shape — see [Errors](https://docs.hanzo.ai/docs/errors).

## Examples

**CLI**

```bash
hanzo licensing verify --token <token>
```

**SDK**

**.ts**

```ts
import { Configuration, LicensingApi } from 'hanzoai';

const api = new LicensingApi(new Configuration({ accessToken: process.env.HANZO_API_KEY }));
const { data } = await api.postLicensingVerify({ token: "<token>" });
```

**.py**

```python
from hanzoai.cloud import ApiClient, Configuration
from hanzoai.cloud.api import LicensingApi

client = ApiClient(Configuration(access_token=os.environ["HANZO_API_KEY"]))
result = LicensingApi(client).post_licensing_verify(token="<token>")
```

**.go**

```go
cfg := hanzoai.NewConfiguration()
cfg.AddDefaultHeader("Authorization", "Bearer "+os.Getenv("HANZO_API_KEY"))
client := hanzoai.NewAPIClient(cfg)

resp, _, err := client.LicensingAPI.PostLicensingVerify(context.Background()).Execute()
if err != nil {
	return err
}
```

**.rs**

```rust
use hanzo_client::apis::{configuration::Configuration, licensing_api};

let mut cfg = Configuration::new();
cfg.bearer_access_token = std::env::var("HANZO_API_KEY").ok();

let result = licensing_api::post_licensing_verify(&cfg, Default::default()).await?;
```

**.java**

```java
import ai.hanzo.cloud.ApiClient;
import ai.hanzo.cloud.api.LicensingApi;

ApiClient client = new ApiClient();
client.setBearerToken(System.getenv("HANZO_API_KEY"));

var result = new LicensingApi(client).postLicensingVerify();
```

**HTTP**

```bash
curl -X POST https://api.hanzo.ai/v1/licensing/verify \
  -H "Authorization: Bearer $HANZO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
       "token": "<token>"
     }'
```

**MCP**

MCP reaches **licensing** through the `licensing` tool, which names its 9 operations with its own verbs — this one among them, under a name only MCP declares. `describe` explains any of them:

```bash
curl -X POST https://api.hanzo.ai/v1/mcp \
  -H "Content-Type: application/json" \
  -d '{
       "jsonrpc": "2.0",
       "id": 1,
       "method": "tools/call",
       "params": {
         "name": "describe",
         "arguments": {
           "op": "get_licensing_download"
         }
       }
     }'
```

---

[Licensing API](https://docs.hanzo.ai/docs/openapi/licensing) · [All Hanzo APIs](https://docs.hanzo.ai/docs/openapi) · [Interactive reference](https://docs.hanzo.ai/docs/openapi/reference)