# Arena Markets API

**Canonical:** https://apis.io/apis/arena-predictions-com/arena-predictions-com-markets-api/  
**Provider:** Arena — https://apis.io/providers/arena-predictions-com/  
**Base URL:** https://arena-predictions.com/api/v1  
**Documentation:** https://docs.arena-predictions.com/

Arena Markets API is one of 8 APIs that [Arena](https://apis.io/providers/arena-predictions-com/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. This API exposes 6 JSON Schema definitions. Tagged areas include Markets. The published artifact set on APIs.io includes an OpenAPI specification and 6 JSON Schemas.

Arena's instruments and games, venue quotes, POST /backtest (a paper game-winner replay), and GET /history* (Fly price history). Scope markets:read. Venue references, prices and history only while the venue-data switch is on.

## Operations (16)

| Method | Path | Summary |
|---|---|---|
| GET | `/instruments` | List instruments |
| GET | `/instruments/search` | Search instruments |
| GET | `/instruments/{ref}` | Get an instrument |
| GET | `/instruments/{ref}/quotes` | Get an instrument's quotes |
| GET | `/instruments/{ref}/book` | Get an instrument's combined order book |
| GET | `/quotes` | Get quotes for several instruments |
| GET | `/games` | List games |
| GET | `/games/{ref}` | Get a game |
| POST | `/backtest` | Replay settled game-winner markets on paper |
| POST | `/evals` | Score a model or the paper book |
| GET | `/runs` | List saved backtests and evals |
| GET | `/runs/{run_id}` | Read one saved run |
| GET | `/history` | Read price history |
| GET | `/history/candles` | Read historical candles |
| GET | `/history/as_of` | Read history as of a time |
| GET | `/history/export` | Export price history |

## Machine-readable artifacts (7)

- **OpenAPI** — https://artifacts.apis.io/arena-predictions-com/openapi/arena-predictions-com-markets-api-openapi.yml
- **JSONSchema** — https://artifacts.apis.io/arena-predictions-com/json-schema/arena-predictions-com-order-request-schema.json
- **JSONSchema** — https://artifacts.apis.io/arena-predictions-com/json-schema/arena-predictions-com-owner-scoreboard-response-schema.json
- **JSONSchema** — https://artifacts.apis.io/arena-predictions-com/json-schema/arena-predictions-com-instrument-book-schema.json
- **JSONSchema** — https://artifacts.apis.io/arena-predictions-com/json-schema/arena-predictions-com-order-result-schema.json
- **JSONSchema** — https://artifacts.apis.io/arena-predictions-com/json-schema/arena-predictions-com-track-record-response-schema.json
- **JSONSchema** — https://artifacts.apis.io/arena-predictions-com/json-schema/arena-predictions-com-me-schema.json

## Other Arena APIs (7)

- [Arena API keys API](https://apis.io/apis/arena-predictions-com/arena-predictions-com-api-keys-api/)
- [Arena Identity API](https://apis.io/apis/arena-predictions-com/arena-predictions-com-identity-api/)
- [Arena Portfolio API](https://apis.io/apis/arena-predictions-com/arena-predictions-com-portfolio-api/)
- [Arena Records API](https://apis.io/apis/arena-predictions-com/arena-predictions-com-records-api/)
- [Arena Status API](https://apis.io/apis/arena-predictions-com/arena-predictions-com-status-api/)
- [Arena Trading API](https://apis.io/apis/arena-predictions-com/arena-predictions-com-trading-api/)
- [Arena Usage API](https://apis.io/apis/arena-predictions-com/arena-predictions-com-usage-api/)

## Tags

Markets

---

Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/arena-predictions-com/arena-predictions-com-markets-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/arena-predictions-com/.