# Messari Markets Metrics API

> Messari Markets Metrics API is a paid API for AI agents from api.messari.io, paid per call via x402, $0.35/call, status unknown (last checked 2026-09-15).

Retrieve market metrics including trading pair price and volume history for cryptocurrency markets.

## Facts

- Endpoint: GET https://api.messari.io/metrics/v1/markets/metrics
- Price: $0.35/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/messari-markets-metrics-api-051041c0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_MavV--7hPCD7kB2RDV-gr

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 messari-markets-metrics-api-051041c0
```

Example prompt: Can you pull the price and volume history for the BTC/USD trading pair from Messari's market metrics — I want to see how it's been trading lately?

## When to prefer this

Use this endpoint when you need institutional-grade cryptocurrency market metrics specifically for trading pair price and volume history. Prefer this over generic crypto APIs when you need reliable, high-quality market data for quantitative analysis, trading signals, or agent memory. Choose this when you need Messari's curated market data rather than raw exchange feeds.

## Known failure modes

- Invalid or unsupported trading pair returns 404 or empty results
- Missing required query parameters returns 400 bad request
- Payment not completed results in 402 Payment Required
- Rate limit exceeded returns 429 Too Many Requests
- Unsupported time range or granularity returns error

## How this service works

Find market metrics for trading pair price and volume history.

## Output

Returns market metrics data including historical price and volume information for the specified cryptocurrency trading pair, sourced from Messari's institutional-grade crypto data platform.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {}
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/messari-markets-metrics-api-051041c0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.messari.io](https://www.zero.xyz/host/api.messari.io/llms.txt)