# CoinCap API: pricing, API and features

Category: [Market data APIs](https://tokvane.app/categories/market-data-apis) · Vendor: CoinCap · Website: https://coincap.io · Status: active

CoinCap API 3.0: REST market data for 1,000+ cryptocurrencies (prices, market cap, history, exchanges, markets, TA indicators) with MCP endpoint and optional keyless x402 pay-per-call.

> CoinCap API (CoinCap) — pricing: from $1/one-time; free tier: Yes; REST: Yes; MCP: Yes; open source: unknown.

## Pricing

- **Model:** usage-based
- **Free tier:** Yes — OpenAPI spec says a prepaid key can be created with 50 free starter credits, no payment or signup; rate limit shown as 600 calls/min for that key.
- **Plans:** Prepaid credits (x402): $1/one-time (500 credits per 1 USD in USDC on Base; minimum 0.01 USD)
- **Notes:** Standard API keys come from the CoinCap dashboard; plan prices for those keys were not published on pages read.

_Verified on 2026-10-30. Source: https://rest.coincap.io/api-docs.json_

## Access & auth

- **Authentication:** api-key
- **KYC required:** No
- **Notes:** Bearer key or ?apiKey=; 12 agentFriendly endpoints accept keyless per-call USDC payment via x402 (Base).

_Verified on 2026-10-30. Source: https://rest.coincap.io/api-docs.json_

## Coverage

- **Exchanges:** Exchange and market endpoints exist (/exchanges, /markets); list not stated
- **Chains:** unknown
- **Assets:** Over 1,000 cryptocurrencies

_Verified on 2026-10-30. Source: https://docs.coincap.io/_

## Capabilities

- **Capabilities:** price-data, historical-data

_Verified on 2026-10-30. Source: https://rest.coincap.io/api-docs.json_

## Interfaces

- **REST API:** Yes
- **WebSocket:** unknown
- **SDKs:** none documented
- **Official MCP server:** Yes
- **Other:** OpenAPI 3 spec; hosted MCP endpoint https://rest.coincap.io/mcp; community MCP server on GitHub (CC3-0/coincap-mcp-server)

_Verified on 2026-10-30. Source: https://rest.coincap.io/api-docs.json_

## Open source & self-hosting

- **Open source:** unknown
- **Licence:** proprietary
- **Self-host:** No

_Verified on 2026-10-30. Source: https://docs.coincap.io/_

## FAQ

**Does CoinCap API have a free tier?**
Yes. OpenAPI spec says a prepaid key can be created with 50 free starter credits, no payment or signup; rate limit shown as 600 calls/min for that key. (verified 2026-10-30)

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

**Is CoinCap API open source or self-hostable?**
Open source: unknown; licence: proprietary; self-host: No. Verified 2026-10-30.

**What are alternatives to CoinCap API?**
Other market data apis in our directory: 0xArchive, AllTick Market Data API, Amberdata Market Data API, Aster Futures API (market data), binance (Siebly.io SDK).

Alternatives: https://tokvane.app/alternatives/coincap-api

Information only, not financial or investment advice.