# List capability descriptors

GET

/v1/capabilities

```sh
curl --request GET \
  --url 'https://example.com/v1/capabilities?limit=25' \
  --header 'Authorization: Bearer <token>'
```

Cursor-paginated. Read-only — capabilities are framework-declared + deployment-extended at boot time, not tenant-created via HTTP. Optional `?feature=` filters by prefix on `feature`.

## Authorizations

- **[bearerAuth](https://docs.kindgi.com/v0.1.9/reference/api.md#bearerauth)**

## Parameters

### Query Parameters

**limit**

integer

default: 25 >= 1 <= 100

1..100. Default 25.

**cursor**

string

Where the previous page ended: its `nextCursor`, as it came. A runtime that seals cursors takes one only for the same list, filters and caller, within a day; otherwise `400 bad-input`, and the list starts again without it. Absent → first page.

**feature**

string

For `/v1/capabilities`: prefix match on `feature`. For `/v1/providers`: exact match against `metadata.features[]`.

## Responses

### 200

Page of capability descriptors.

application/json

object

**data**

required

Array\<object>

object

**id**

required

Stable identifier — e.g. `feature:<feature>`; deployments MAY pick other conventions for extension entries.

string

**feature**

required

One of:

- **string**

  string

  Allowed values: structured-output vision audio-input audio-output tool-use parallel-tool-use thinking long-context code-execution web-search file-search streaming batch

- **string**

  Deployment-declared feature name outside the closed built-in enum.

  string

**description**

required

string

**kind**

Capability kind (`llm-inference`, `embedding`, `gpu-compute`, `sandbox-exec`, `browser-session`, …). Absent = `llm-inference`.

string

**paramsSchema**

Optional JSON Schema fragment describing the parameters an agent may attach to `{ feature, params }` in a `Requirement`.

object

**_key_**

additional properties

any

**providers**

The tenant’s registered providers with a model that has the feature, and those models. Absent from servers that don’t read the provider registry; `[]` when no provider of the tenant has one.

Array\<object>

A provider of the tenant with a model that has the feature.

object

**providerId**

required

string

**models**

required

Its models that have it.

Array\<string>

**nextCursor**

string

**hasMore**

required

boolean

##### Example

```json
{
  "data": [
    {
      "feature": "structured-output"
    }
  ]
}
```

### 400

Malformed query parameter.

application/json

object

**error**

required

object

**code**

required

Stable machine-readable discriminant. Values match domain error codes (see `docs/API-ROUTE-CONVENTIONS.md` §4.3).

string

**message**

required

string

**details**

Optional, kind-specific.

object

**_key_**

additional properties

any

**requestId**

required

Server-assigned request id; also echoed via `X-Request-Id` header.

string

##### Examplegenerated

```json
{
  "error": {
    "code": "example",
    "message": "example",
    "details": {},
    "requestId": "example"
  }
}
```

### 401

Missing / malformed / expired / revoked bearer token.

application/json

object

**error**

required

object

**code**

required

Stable machine-readable discriminant. Values match domain error codes (see `docs/API-ROUTE-CONVENTIONS.md` §4.3).

string

**message**

required

string

**details**

Optional, kind-specific.

object

**_key_**

additional properties

any

**requestId**

required

Server-assigned request id; also echoed via `X-Request-Id` header.

string

##### Examplegenerated

```json
{
  "error": {
    "code": "example",
    "message": "example",
    "details": {},
    "requestId": "example"
  }
}
```

## See also

- [Every error code](https://docs.kindgi.com/v0.1.9/reference/errors.md)