# OptimistFi Perps Data API: pricing, API and features

Category: [Market data APIs](https://tokvane.app/categories/market-data-apis) · Vendor: OptimistFi · Website: https://optimistfi.com/perps/data · Status: active

REST API with normalized funding, open interest, prices and leverage caps for perpetual futures across 44 venues, plus an MCP server.

> OptimistFi Perps Data API (OptimistFi) — pricing: freemium; free tier: Yes; REST: Yes; MCP: Yes; open source: unknown.

## Pricing

- **Model:** freemium
- **Free tier:** Yes — Live API is free with no key; page says data refreshes every 4 seconds. Hourly history of stock, commodity, FX and index perps needs an API key requested through a form.
- **Plans:** unknown
- **Notes:** No price is published for the historical dataset or higher live limits.

_Verified on 2026-10-30. Source: https://optimistfi.com/perps/data_

## Access & auth

- **Authentication:** none
- **KYC required:** unknown
- **Notes:** Live API needs no account or key; the historical dataset uses a Bearer API key (60 requests per minute per key per the errors page). Keys are requested via a form reviewed by the team.

_Verified on 2026-10-30. Source: https://optimistfi.com/perps/data/authentication_

## Coverage

- **Exchanges:** 44 perpetual-futures venues, including Hyperliquid, Jupiter Perps, Hibachi, Bluefin, OKX and Bitget
- **Chains:** Venue-dependent (e.g. Solana, Arbitrum, Base, Sui); not listed as a single set
- **Assets:** Crypto, stock, commodity, FX and index perpetuals; crypto is in the free live API, history covers non-crypto classes

_Verified on 2026-10-30. Source: https://optimistfi.com/perps/data/venues_

## Capabilities

- **Capabilities:** price-data, historical-data, derivatives-data, funding-rates, open-interest, multi-exchange

_Verified on 2026-10-30. Source: https://optimistfi.com/perps/data_

## Interfaces

- **REST API:** Yes
- **WebSocket:** unknown
- **SDKs:** none documented
- **Official MCP server:** Yes
- **Other:** OpenAPI 3.1 spec; JSON with open CORS, CSV for the historical dataset; read-only public MCP endpoint

_Verified on 2026-10-30. Source: https://optimistfi.com/mcp_

## Open source & self-hosting

- **Open source:** unknown
- **Licence:** unknown
- **Self-host:** unknown

_Verified on 2026-10-30. Source: https://optimistfi.com/perps/data_

## FAQ

**Does OptimistFi Perps Data API have a free tier?**
Yes. Live API is free with no key; page says data refreshes every 4 seconds. Hourly history of stock, commodity, FX and index perps needs an API key requested through a form. (verified 2026-10-30)

**Does OptimistFi Perps Data API offer an API?**
REST: Yes. WebSocket: unknown. Official MCP server: Yes. Verified 2026-10-30.

**Is OptimistFi Perps Data API open source or self-hostable?**
Open source: unknown; licence: unknown; self-host: unknown. Verified 2026-10-30.

**What are alternatives to OptimistFi Perps Data API?**
Other market data apis in our directory: 0xArchive, AllTick Market Data API, altFINS, Amberdata Market Data API, Aperiodic.

Alternatives: https://tokvane.app/alternatives/optimistfi-perps-data-api

Information only, not financial or investment advice.