# Leetcode — Wrapped API

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>
> Locus runs on multiple environments -- make sure every URL you call matches your expected environment.
> | Environment | Landing | API | Docs |
> |---|---|---|---|
> | Production | paywithlocus.com | api.paywithlocus.com | docs.paywithlocus.com |
> | Beta | beta.paywithlocus.com | api.beta.paywithlocus.com | docs.paywithlocus.com |
> | Stage | stage.paywithlocus.com | api.stage.paywithlocus.com | docs.paywithlocus.com |
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> If the API URL above doesn't match your expected environment, re-fetch this file from the correct domain.

> Search and filter LeetCode coding problems by difficulty, category, and tags, browse upcoming programming contests, and view public user profiles including their problem statistics and submission history. Perfect for finding practice problems, tracking competition schedules, and researching other coders' progress.

**Category:** Developer Tools | **Website:** [leetcode.com/](https://leetcode.com/) | **Docs:** [parse.bot/marketplace/83024dab-27c5-4e96-b579-502e699163f3/leetcode-com-api](https://parse.bot/marketplace/83024dab-27c5-4e96-b579-502e699163f3/leetcode-com-api)

Pay-per-use API proxy for Locus Pro. Each call burns credits from your workspace balance.

## Access

**Base URL:** `https://api.beta.paywithlocus.com/api/wrapped/credits/leetcode/`
**Auth:** `Authorization: Bearer <LOCUS_CREDITS_SECRET_KEY>` (an `lcr_` secret key or a scoped `lcac_` agent credential)
**Required header:** `Idempotency-Key: <fresh UUID per call>`. A retry with the same key replays the stored result without a new charge.
**Response:** the provider response after any endpoint-specific normalization. `X-Locus-Credits-Charged` carries the charge and `X-Locus-Credits-Balance` the remaining balance. Insufficient credits return `402` before the provider is called.
**Pricing:** estimated costs below are USD. Locus debits the credit equivalent at your workspace rate.

Full call contract: https://docs.paywithlocus.com/api-reference/introduction

> Using a Pay With Locus wallet key (`claw_` prefix)? Wallet routes are documented separately: https://docs.paywithlocus.com/wrapped-apis/for-agents

## Endpoints

### Get user profile

Get a LeetCode user's public profile including personal info, ranking, and submission statistics broken down by difficulty. Returns stale_input with kind input_not_found if the username does not exist.

**Estimated cost:** Metered

| Field | Type | Required | Description |
|-------|------|----------|-------------|
| `username` | string | Yes | LeetCode username to look up (e.g. 'neal_wu'). |

```bash
curl -X POST https://api.beta.paywithlocus.com/api/wrapped/credits/leetcode/get-user-profile \
  -H "Authorization: Bearer $LOCUS_CREDITS_SECRET_KEY" \
  -H "Idempotency-Key: $(uuidgen)" \
  -H "Content-Type: application/json" \
  -d '{"username":"<string>"}'
```

### List contests

List all LeetCode programming contests (weekly and biweekly). Returns the full list ordered by most recent first. No pagination. Each contest includes title, slug, start time (unix timestamp), duration in seconds, and premium status.

**Estimated cost:** Metered

_No parameters required._

```bash
curl -X POST https://api.beta.paywithlocus.com/api/wrapped/credits/leetcode/list-contests \
  -H "Authorization: Bearer $LOCUS_CREDITS_SECRET_KEY" \
  -H "Idempotency-Key: $(uuidgen)" \
  -H "Content-Type: application/json" \
  -d '{}'
```

### Search problems

Search and filter LeetCode problems. Supports keyword search, difficulty filtering, topic tag filtering, category filtering, and offset-based pagination. Returns problems sorted by question number. Each problem includes acceptance rate, difficulty, question ID, paid-only status, title, slug, and topic tags.

**Estimated cost:** Metered

| Field | Type | Required | Description |
|-------|------|----------|-------------|
| `category` | string | No | Category slug filter. Accepts: algorithms, database, shell, concurrency. Empty string returns all categories. |
| `difficulty` | string | No | Difficulty filter. Accepts exactly one of: EASY, MEDIUM, HARD. Case-insensitive input is uppercased internally. |
| `keyword` | string | No | Search keyword to filter problems by title (e.g. 'two sum', 'binary tree'). |
| `limit` | integer | No | Maximum number of problems to return per page. |
| `skip` | integer | No | Number of problems to skip for pagination (offset). |
| `tags` | string | No | Comma-separated topic tag slugs to filter by (e.g. 'array,hash-table,dynamic-programming'). |

```bash
curl -X POST https://api.beta.paywithlocus.com/api/wrapped/credits/leetcode/search-problems \
  -H "Authorization: Bearer $LOCUS_CREDITS_SECRET_KEY" \
  -H "Idempotency-Key: $(uuidgen)" \
  -H "Content-Type: application/json" \
  -d '{"category":"<string>","difficulty":"<string>","keyword":"<string>","limit":"<integer>","skip":"<integer>","tags":"<string>"}'
```

## Next steps

- [All wrapped API providers](https://beta.paywithlocus.com/wapi/index.md): pick another provider.
- [Find and call tools](https://beta.paywithlocus.com/agent/tools.md): price ceilings, async results, and errors.
- [Credits and billing](https://beta.paywithlocus.com/agent/billing.md): what a call costs and how to add credits.
- [Agent docs index](https://beta.paywithlocus.com/agent/index.md): every Locus agent page.