# List callback

URL: https://docs.hanzo.ai/docs/openapi/knowledge/get-knowledge-connectors-by-provider-callback

> Finishes an OAuth connection: it exchanges the provider's code for a token, seals that token in KMS, and records the connection.

`GET /v1/knowledge/connectors/{provider}/callback`

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

|               |                                                                    |
| ------------- | ------------------------------------------------------------------ |
| **Address**   | `https://api.hanzo.ai/v1/knowledge/connectors/{provider}/callback` |
| **Method**    | `GET`                                                              |
| **Operation** | `get_knowledge_connectors_by_provider_callback`                    |
| **Auth**      | `Authorization: Bearer $HANZO_API_KEY`                             |

Finishes an OAuth connection: it exchanges the
provider's code for a token, seals that token in KMS, and records the
connection. THE ORG COMES FROM THE SIGNED STATE, not from a header and not from
the provider, so an attacker cannot bind their own account to someone else's
org — a tampered, expired or foreign-provider state is refused outright. The
token itself is never returned, never written into the document, and never
logged; the document holds only its KMS path.

## Request

4 fields.

| Field      | In    | Type   | Required | Description                                                          |
| ---------- | ----- | ------ | -------- | -------------------------------------------------------------------- |
| `provider` | path  | string | yes      | Provider is the connector completing its flow, from the path.        |
| `code`     | query | string | —        | Code is the provider's authorization code, exchanged for a token.    |
| `state`    | query | string | —        | State is the org-bound value this server signed at connect time.     |
| `error`    | query | string | —        | Error is the provider's denial reason when the user refused consent. |

## Response

| Status    | Body                    | Meaning |
| --------- | ----------------------- | ------- |
| `200`     | knowledge.connectionOut | ok      |
| `default` | problem-details         | refused |

`200` body — 3 fields.

| Field      | In   | Type   | Always | Description                                                                  |
| ---------- | ---- | ------ | ------ | ---------------------------------------------------------------------------- |
| `account`  | body | string | —      | Account names the connected external account, when the provider reports one. |
| `provider` | body | string | —      | Provider is the connector this answer is about.                              |
| `status`   | body | string | —      | Status is the connection state: connected or disconnected.                   |

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

## Examples

**CLI**

```bash
hanzo knowledge connectors callback <provider>
```

**SDK**

**.ts**

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

const api = new KnowledgeApi(new Configuration({ accessToken: process.env.HANZO_API_KEY }));
const { data } = await api.getKnowledgeConnectorsByProviderCallback({ provider: 'provider' });
```

**.py**

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

client = ApiClient(Configuration(access_token=os.environ["HANZO_API_KEY"]))
result = KnowledgeApi(client).get_knowledge_connectors_by_provider_callback(provider='provider')
```

**.go**

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

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

**.rs**

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

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

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

**.java**

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

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

var result = new KnowledgeApi(client).getKnowledgeConnectorsByProviderCallback();
```

**HTTP**

```bash
curl https://api.hanzo.ai/v1/knowledge/connectors/<provider>/callback \
  -H "Authorization: Bearer $HANZO_API_KEY"
```

**MCP**

MCP reaches **knowledge** through the `knowledge` 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": "list_knowledge_connectors"
         }
       }
     }'
```

---

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