# Rome2rio — Wrapped API

> **You are on:** `https://api.paywithlocus.com/api` | [llms.txt](https://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.

> Find and compare train routes between cities worldwide, instantly viewing travel duration, number of stops, carrier information, ticket prices, and direct booking links. Streamline your train journey planning by accessing comprehensive route options and pricing in one place.

**Category:** Travel | **Website:** [www.rome2rio.com/map/Tashkent/Samarkand?route=Train&segment=0&accom_comparison=true](https://www.rome2rio.com/map/Tashkent/Samarkand?route=Train&segment=0&accom_comparison=true) | **Docs:** [parse.bot/marketplace/748a1831-8aa6-4514-9a88-8f20181fb4e1/rome2rio-com-api](https://parse.bot/marketplace/748a1831-8aa6-4514-9a88-8f20181fb4e1/rome2rio-com-api)

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

## Access

**Base URL:** `https://api.paywithlocus.com/api/wrapped/credits/rome2rio/`
**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

### Search trains

Search for train connections between two cities. Returns all available train services with carrier name, line/train identifiers, journey duration, intermediate stops, indicative prices by class, frequency, and a link to book. Results are route-level summaries (not real-time schedules); a single request returns all known services for the city pair.

**Estimated cost:** Metered

| Field | Type | Required | Description |
|-------|------|----------|-------------|
| `currency` | string | No | ISO 4217 currency code for prices (e.g. 'USD', 'EUR', 'GBP'). |
| `destination` | string | Yes | Arrival city name (e.g. 'Lyon', 'Samarkand', 'Manchester'). |
| `language` | string | No | ISO 639-1 language code for response text. |
| `origin` | string | Yes | Departure city name (e.g. 'Paris', 'Tashkent', 'London'). |

```bash
curl -X POST https://api.paywithlocus.com/api/wrapped/credits/rome2rio/search-trains \
  -H "Authorization: Bearer $LOCUS_CREDITS_SECRET_KEY" \
  -H "Idempotency-Key: $(uuidgen)" \
  -H "Content-Type: application/json" \
  -d '{"currency":"<string>","destination":"<string>","language":"<string>","origin":"<string>"}'
```

## Next steps

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