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Choose up to three servers. Compare what they do, how to connect and what has actually been checked.

Compare serversAgent402
Purpose500+ pay-per-call web tools for AI agents - search/answer front door, MCP-native. Settled in USDC over x402 on 12 rails (plus USDG on Robinhood), or free via proof-of-work. Self-hostable, deterministic. Plus the open x402 index (Find / Route / Leaderboard).
Authentication (maintainer declared)Unknown
Public launch commandnpx -y agent402-mcp
Configuration sourcePublic install instructions
Observed toolsUnknown
Last complete tool checkUnknown
LicenseAGPL-3.0
Open setup

A complete tool check lists tools; it does not exercise them or certify security.