# Codeforces on Onekey

> 8 endpoints for Codeforces (8 stable, 0 beta), 1 to 5 credits each. Category: Developer platforms. One key, one JSON shape.

Base URL: https://api.onekey.dev
Auth: header `x-api-key: <key>`. Call shape: `GET /v1/{platform}/{endpoint}?{params}`.
Every response is `{success, data, metadata, error}`; check `success` first. Cost is in `metadata.credits_charged`. Free when served from cache (0.2 credit for a cached response over 100 KB). Failed and not-found calls are refunded.
Status: stable = verified against the live source; beta = not yet verified, fields may be missing.

Page: https://onekey.dev/platforms/codeforces
Reference (Markdown): https://onekey.dev/docs/api/codeforces.md
All docs: https://onekey.dev/llms.txt

## Canonical fields returned

Unified-schema fields (same names on every platform), with how many of the 8 mapped Codeforces endpoints return each:

- `content.createdAt` (ISO 8601 date): 7
- `content.title` (string): 7
- `author.username` (string): 4
- `content.id` (string): 4
- `content.language` (string): 2
- `content.text` (string): 2
- `engagement.likes` (integer): 2
- `entity.id` (string): 2
- `entity.stats.rating` (number): 2
- `entity.status` (string): 2
- `entity.type` (string): 2
- `author.avatarUrl` (URL): 1
- `author.followers` (integer): 1
- `author.id` (string): 1
- `entity.country` (string): 1
- `entity.language` (string): 1
- `entity.stats.rank` (integer): 1
- `listing.company` (string): 1
- `media.durationSeconds` (number): 1
- plus 11 platform-specific fields under `ext.`

## Endpoints

### codeforces.blog_entry

Fetch a Codeforces blog entry.
- Price: 1 credit per fresh call. Status: stable. Returns: one record.
- Request: `GET https://api.onekey.dev/v1/codeforces/blog_entry?id=79` with header `x-api-key: YOUR_API_KEY`
- Parameters:
  - `id` (string, required): Blog entry id, e.g. 79
- Fields returned: `content.id`, `content.title`, `content.text`, `author.username`, `engagement.likes`, `content.createdAt`, `content.language`
- Reference: https://onekey.dev/docs/api/codeforces/blog_entry.md

### codeforces.contests

All Codeforces contests (upcoming, running, finished).
- Price: 5 credits per fresh call. Status: stable. Returns: a list.
- Request: `GET https://api.onekey.dev/v1/codeforces/contests` with header `x-api-key: YOUR_API_KEY`
- Parameters: none
- Fields returned: `entity.id`, `content.title`, `entity.type`, `entity.status`, `media.durationSeconds`, `content.createdAt`
- Reference: https://onekey.dev/docs/api/codeforces/contests.md

### codeforces.problemset

Codeforces problems filtered by a tag.
- Price: 5 credits per fresh call. Status: stable. Returns: a list.
- Request: `GET https://api.onekey.dev/v1/codeforces/problemset?tags=dp` with header `x-api-key: YOUR_API_KEY`
- Parameters:
  - `tags` (string, required): Problem tag, e.g. dp
- Fields returned: `content.title`, `entity.stats.rating`, `entity.type`, `ext.contestId`, `ext.index`
- Reference: https://onekey.dev/docs/api/codeforces/problemset.md

### codeforces.recent_actions

Recent Codeforces blog and comment activity.
- Price: 5 credits per fresh call. Status: stable. Returns: a list.
- Request: `GET https://api.onekey.dev/v1/codeforces/recent_actions` with header `x-api-key: YOUR_API_KEY`
- Parameters: none
- Fields returned: `content.id`, `content.title`, `author.username`, `content.createdAt`, `content.text`, `ext.commentator`
- Reference: https://onekey.dev/docs/api/codeforces/recent_actions.md

### codeforces.user

Fetch a Codeforces user's public profile and rating.
- Price: 1 credit per fresh call. Status: stable. Returns: one record.
- Request: `GET https://api.onekey.dev/v1/codeforces/user?handle=tourist` with header `x-api-key: YOUR_API_KEY`
- Parameters:
  - `handle` (string, required): Codeforces handle, e.g. tourist
- Fields returned: `author.id`, `author.username`, `author.followers`, `author.avatarUrl`, `content.createdAt`, `entity.stats.rating`, `entity.country`, `listing.company`, `ext.maxRating`, `ext.contribution`, `ext.title`
- Reference: https://onekey.dev/docs/api/codeforces/user.md

### codeforces.user_blogs

Blog entries written by a Codeforces user.
- Price: 5 credits per fresh call. Status: stable. Returns: a list.
- Request: `GET https://api.onekey.dev/v1/codeforces/user_blogs?handle=tourist` with header `x-api-key: YOUR_API_KEY`
- Parameters:
  - `handle` (string, required): Codeforces handle, e.g. tourist
- Fields returned: `content.id`, `content.title`, `author.username`, `engagement.likes`, `content.createdAt`, `content.language`
- Reference: https://onekey.dev/docs/api/codeforces/user_blogs.md

### codeforces.user_rating

A Codeforces user's rating history (per contest).
- Price: 5 credits per fresh call. Status: stable. Returns: a list.
- Request: `GET https://api.onekey.dev/v1/codeforces/user_rating?handle=tourist` with header `x-api-key: YOUR_API_KEY`
- Parameters:
  - `handle` (string, required): Codeforces handle, e.g. tourist
- Fields returned: `entity.id`, `content.title`, `entity.stats.rank`, `content.createdAt`, `ext.oldRating`, `ext.newRating`
- Reference: https://onekey.dev/docs/api/codeforces/user_rating.md

### codeforces.user_submissions

A Codeforces user's most recent submissions.
- Price: 5 credits per fresh call. Status: stable. Returns: a list.
- Request: `GET https://api.onekey.dev/v1/codeforces/user_submissions?handle=tourist` with header `x-api-key: YOUR_API_KEY`
- Parameters:
  - `handle` (string, required): Codeforces handle, e.g. tourist
- Fields returned: `content.id`, `content.title`, `entity.status`, `entity.language`, `content.createdAt`, `ext.problemRating`, `ext.timeMs`, `ext.memoryBytes`, `ext.contestId`
- Reference: https://onekey.dev/docs/api/codeforces/user_submissions.md

## Sample request

```bash
curl "https://api.onekey.dev/v1/codeforces/blog_entry?id=79" \
  -H "x-api-key: YOUR_API_KEY"
```