# PAYFORAPI (payforapi.com)

Pay-per-call API gateway that lets agents buy data endpoints like weather, crypto prices and news with USDC over x402.

- Atlas card: https://inite.ai/en/atlas/payforapi.com
- Site: https://payforapi.com
- For: AI agents and developers who pay for per-call API access in USDC using the x402 protocol
- Categories: dev
- Use 0/100 · alive 100/100

## Used for

- verify facts and citations for agent answers
- fetch NWS weather forecasts and alerts
- pull crypto prices, sentiment and market analysis

## Price

- no price printed, no free plan (read 2026-10-25 on https://payforapi.com/buy)

## For developers

- OpenAPI: https://payforapi.com/openapi.json (21 paths)
- MCP server: com.payforapi/saymon-ru-data-api (namespace; open on 2026-10-25, 13 tools)
- Read 2026-10-25

## MCP server, measured daily

Server: https://payforapi.com/mcp, checked every day since 2026-10-25 (2 checks).

- Answered: measuring, 2 daily checks so far
- Median first answer: 839 ms
- Sign-in: none
- Context its tool definitions take: about 1278 tokens (13 tools)
- Tool definitions: C, 67/100
- Failing "params_described": 13 of 13 tools
- Failing "annotations": 13 of 13 tools
- Method: https://inite.ai/en/atlas/mcp/report

## Your data

- Certifications stated: none
- Read 2026-10-25

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Source: INITE Atlas, https://inite.ai/en/atlas/payforapi.com. JSON: https://inite.ai/api/atlas/payforapi.com. MCP: https://inite.ai/api/mcp (atlas_lookup).