# List speakers

Source: https://langbot.ai/docs/api/history/list-speakers

`GET /v1/history/speakers`

Speaker profiles with their settled-market and mention counts.

**Auth.** An API token: `Authorization: Bearer lb_…` ([create one](https://langbot.ai/app/tokens)). Signed-in web sessions work too.

**Limits.** One history query per call (500 a day on Free; unlimited on Builder and Standard).

## Parameters

### Query parameters

| Name | Type | Required | Description |
|---|---|---|---|
| `q` | string | no | Free text over the name and aliases. |
| `limit` | integer | no | Page size. 1 to 1000. Default `200`. |

## Request

**curl**

```bash
curl "https://api.langbot.ai/v1/history/speakers?q=powell" \
  -H "Authorization: Bearer $LANGBOT_API_TOKEN"
```

**Python**

```python
from langbot import LangbotClient

async with LangbotClient() as lb:  # reads LANGBOT_API_TOKEN
    for s in await lb.speakers("powell"):
        print(s.speaker_key, s.display_name)
```

**TypeScript**

```ts
import { LangbotClient } from "@langbotai/sdk";

const lb = new LangbotClient(); // reads LANGBOT_API_TOKEN
const speakers = await lb.speakers("powell");
console.log(speakers);
```

## Response

`200 OK`

```json
{
  "count": 1,
  "speakers": [
    { "speaker_key": "powell", "display_name": "Jerome Powell", "role": "Chair", "org": "Federal Reserve", "aliases": ["Chair Powell", "Powell"], "profiled": true, "markets": 214, "mentions": 1830, "yes": 51, "no": 160, "void": 3, "yes_rate": 0.242, "last_settled_ts": 1792000000000 }
  ]
}
```

## Errors

| Status | `code` | When |
|---|---|---|
| 401 | `auth_required` | No token was sent. |
| 401 | `token_invalid` | The token was not recognised (mistyped, revoked or expired). |
| 422 | `validation_error` | A parameter failed validation; `detail[].loc` names it. |
| 429 | `quota_exceeded` | Today's history queries are spent; `quota.resets_at` says when they reset. |
| 429 | `rate_limited` | Over your request budget; wait `Retry-After` seconds. |

Every error body is `{"detail": …, "code": "…"}`; branch on `code`. All codes: [Errors](https://langbot.ai/docs/api#errors).