# telegram.channel

**stable** **2 credits**

Public Telegram channel info from the web preview: title, description, subscribers, media counters.

`GET /v1/telegram/channel`

## What you get

One Telegram record in Onekey's unified shape, in `data`. If the record does not exist you get a `404 not_found` and are not charged.

**Also known as:** `/telegram/profile` on APIs that nest their paths. See [Alternatives and equivalents](https://onekey.dev/docs/alternatives.md).

## What it costs

- **2 credits** for a fresh fetch, charged only when it succeeds.
- **Free when served from cache (0.2 credit for a cached response over 100 KB).**
- **Free** if the request is invalid (never charged) or the source fails or reports not found (refunded).

## Parameters

| Name | Type | Required | Default | What it is | Constraints |
| --- | --- | --- | --- | --- | --- |
| `channel` | string | yes | (required) | Public channel username without @ | max 32 chars; must match `[a-z][a-z0-9_]{3,31}`; trimmed, leading @ removed, lowercased |

## Request

```bash
curl "https://api.onekey.dev/v1/telegram/channel?channel=durov" \
  -H "x-api-key: YOUR_API_KEY"
```

```python
import requests

res = requests.get(
    "https://api.onekey.dev/v1/telegram/channel",
    params={"channel": "durov"},
    headers={"x-api-key": "YOUR_API_KEY"},
)
body = res.json()

if body["success"]:
    print(body["data"])
else:
    print(body["error"]["code"], body["error"]["message"])
```

```javascript
const params = new URLSearchParams({ channel: "durov" });
const res = await fetch(`https://api.onekey.dev/v1/telegram/channel?${params}`, {
  headers: { "x-api-key": "YOUR_API_KEY" },
});
const body = await res.json();

if (body.success) console.log(body.data);
else console.error(body.error.code, body.error.message);
```

## Recorded response

A real Telegram response, recorded and returned in Onekey's shape. Fields the platform does not provide are `null`.

```json
{
  "success": true,
  "data": {
    "author": {
      "username": "durov",
      "displayName": "Pavel Durov",
      "followers": 10600000,
      "url": "https://t.me/durov",
      "avatarUrl": "https://cdn4.telesco.pe/file/UQ0wj_87_vOGsERgPVHR_vdAf9vuD6H5yO5uBw1Lfuke-cHI2BzLo_1--v4Cv-_roPWRyVKJ4om6X_Ru_W5frGBCgeVoWhfDnymoG7udRbGVTm7dlPrN8whw_zCyemse-RuCiTifZye339f9PuaotaNXzS3GRgaA6hDMw5Q1UWtcc1yP8FQ1bpjjIrWBe52qeC3DY_0pRPCjwyRz2gYF4SEZQu1hsfzeIqXyUB2KP9aJXJkZIFyL4P6TDyoI4JbHxRcIJHPhNtMSoV6XXKN5d1S-C04Rf0HD1VUd3FKmbWLKAJDFJwnsME28-6AoH2GAVbNwbzpETA_-DSPe6BkEkA.jpg",
      "verified": true
    },
    "content": {
      "text": "Founder of Telegram."
    },
    "ext": {
      "photos": 102,
      "videos": 46,
      "files": null,
      "links": 200
    }
  },
  "metadata": {
    "platform": "telegram",
    "endpoint": "channel",
    "cached": false,
    "stale": false,
    "age_s": 0,
    "fetched_at": "2026-01-01T12:00:00+00:00",
    "credits_charged": 2,
    "request_id": "7f3a9c2e5b1d4c8fa2e6d0b9c4f18e37"
  },
  "error": null
}
```

## Field mapping

How this endpoint's source fields become Onekey's [unified schema](https://onekey.dev/docs/schema.md). Fields the source lacks come back as `null`.

| Source path | Onekey field | Transform |
| --- | --- | --- |
| `handle` | `author.username` | - |
| `title` | `author.displayName` | - |
| `subscribers` | `author.followers` | `toNumber` |
| `channelUrl` | `author.url` | `safeUrl` |
| `avatarUrl` | `author.avatarUrl` | `safeUrl` |
| `verified` | `author.verified` | `toBoolean` |
| `description` | `content.text` | - |
| `photos` | `ext.photos` | `toNumber` |
| `videos` | `ext.videos` | `toNumber` |
| `files` | `ext.files` | `toNumber` |
| `links` | `ext.links` | `toNumber` |

## Caching and freshness

- Fresh for about 1 hour. Repeat calls in that window are served from cache and are free.
- Between 1 hour and 1 day the cached copy is still served instantly and marked `stale: true` while Onekey refreshes it in the background.
- If the source is down when a refresh is needed, the last copy can be served for up to 1 day more (marked stale).
- A "not found" is remembered for 5 minutes and is free.
- The cache is shared across all customers, which is what keeps repeat calls cheap.

## What can go wrong

| Status | Code | What to do |
| --- | --- | --- |
| 401 | `unauthorized` | Check the `x-api-key` header. |
| 402 | `insufficient_credits` | [Add credits](https://onekey.dev/pricing); your balance must cover the price. |
| 404 | `not_found` | That record does not exist. Free; do not retry. |
| 422 | `invalid_params` | Fix the parameters using the table above. Free. |
| 429 | `rate_limited` | Wait `Retry-After` seconds, then retry. |
| 502 | `upstream_error` | The source failed. Refunded; retry with backoff. |

See [Errors](https://onekey.dev/docs/errors.md) for the full list and retry guidance.

Status: stable (verified against the live source).