Auto-detect a public MCP endpoint era, fingerprint its complete normalized tools/list schema contract and optionally compare it with a caller-provided previous SHA-256 hash. Cosmetic descriptions are excluded so text-only edits do not trigger contract drift. Base mainnet USDC
| Network | Scheme | Amount | Pay To |
|---|---|---|---|
| Base | exact | $0.004000 USDC | 0xf9c2...61Ba |