# CoinMarketCap MCP via x402

> CoinMarketCap MCP via x402 is a paid API for AI agents from pro-api.coinmarketcap.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Provides MCP-protocol access to CoinMarketCap's full suite of cryptocurrency market data APIs, paid per-call via x402 micropayments

## Facts

- Endpoint: POST https://pro-api.coinmarketcap.com/x402/mcp
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/coinmarketcap-7b3cc5db
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_sL4aOfVdDjFZ9eWeFe0H9

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability coinmarketcap-7b3cc5db -d '<json body>'
```

Example prompt: Pull the latest market data for Bitcoin, Ethereum, and Solana from CoinMarketCap — I need their current prices, market caps, and 24-hour percentage changes.

## When to prefer this

Use this endpoint when an AI agent needs programmatic, pay-per-call access to CoinMarketCap's authoritative crypto market data via the MCP protocol, especially in agentic workflows where x402 micropayments are already supported and you need trusted, real-time pricing and rankings without a traditional API key subscription.

## Known failure modes

- Insufficient USDC balance or failed x402 payment results in 402 Payment Required response
- Invalid or unsupported MCP tool call format returns an error
- Requested cryptocurrency symbol not found returns empty or error result
- Rate limits exceeded returns 429 Too Many Requests
- Network timeout if CoinMarketCap backend is slow or unavailable

## How this service works

MCP access via x402 (beta)

## Output

Returns cryptocurrency market data including prices, market capitalizations, rankings, volume, and other metrics for queried assets, delivered via the MCP protocol in response to tool calls made through the x402 payment-gated endpoint.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/coinmarketcap-7b3cc5db/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from pro-api.coinmarketcap.com](https://www.zero.xyz/host/pro-api.coinmarketcap.com/llms.txt)