# Prepladder — Wrapped API

> **You are on:** `https://api.beta.paywithlocus.com/api` | [llms.txt](https://beta.paywithlocus.com/llms.txt) | [docs](https://docs.paywithlocus.com)
>
> 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 |
>
> If the API URL above doesn't match your expected environment, re-fetch this file from the correct domain.

> Search through PrepLadder's comprehensive NEET PG study materials and access structured MCQ questions complete with options and answers from previous year exam papers. Find relevant questions and articles to prepare effectively for your medical entrance exam.

**Category:** Education | **Website:** [www.prepladder.com/neet-pg-study-material/previous-years-question-papers/neet-pg-previous-year-question-papers-of-last-5-years?](https://www.prepladder.com/neet-pg-study-material/previous-years-question-papers/neet-pg-previous-year-question-papers-of-last-5-years?) | **Docs:** [parse.bot/marketplace/cfccd15e-9371-4ce2-801d-9ce895f835b7/prepladder-com-api](https://parse.bot/marketplace/cfccd15e-9371-4ce2-801d-9ce895f835b7/prepladder-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/prepladder/`
**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 article questions

Fetch a specific PrepLadder article by its URL path and extract structured MCQ questions. Returns each question with its text, four options (A-D), and the correct answer when available. The url_path can be obtained from the search_questions endpoint results.

**Estimated cost:** Metered

| Field | Type | Required | Description |
|-------|------|----------|-------------|
| `url_path` | string | Yes | Article URL path from search_questions results (e.g. 'neet-pg-study-material/previous-years-question-papers/neet-pg-previous-year-question-papers-of-last-5-years'). |

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

### Search questions

Search PrepLadder NEET PG study material articles by keyword. Returns paginated article results matching the query, including title, category, date, URL path, and content preview. Each article may contain multiple MCQ questions. Use get_article_questions with the returned url_path to extract structured questions.

**Estimated cost:** Metered

| Field | Type | Required | Description |
|-------|------|----------|-------------|
| `page` | integer | No | Page number for pagination, starting from 1. |
| `query` | string | Yes | Search keyword or phrase to find relevant study material articles (e.g. 'anatomy', 'pharmacology', 'deltoid ligament'). |

```bash
curl -X POST https://api.beta.paywithlocus.com/api/wrapped/credits/prepladder/search-questions \
  -H "Authorization: Bearer $LOCUS_CREDITS_SECRET_KEY" \
  -H "Idempotency-Key: $(uuidgen)" \
  -H "Content-Type: application/json" \
  -d '{"page":"<integer>","query":"<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.