{"tool":"settlement-history-check","title":"Settlement history (counterparty proof)","description":"On-chain counterparty check: USDC transfers SENT and RECEIVED by an address over the last ~48h of Base blocks (counts, volumes, sample tx hashes). Preflighted so you never pay during an RPC outage.","method":"POST","call":"/v1/tools/settlement-history-check/call","input_schema":{"type":"object","required":["address"],"properties":{"address":{"type":"string","description":"EVM address, 0x-prefixed."}}},"output_schema":{"type":"object","properties":{"tool":{"type":"string"},"valid":{"type":"boolean"},"address":{"type":"string"},"usdc_sent":{"type":"object"},"usdc_received":{"type":"object"},"scope":{"type":"string"}},"required":["valid","address"]},"price_usdc_floor":0.02,"price_note":"dynamic-dutch: live quote via GET /health or the 402 challenge on POST without payment","example_request":{"input":{"address":"0xc59c85e661d34084a7769f955d17fd38254a6235"}},"docs":"https://rail.akrivis.in/openapi.json","mcp":"https://rail.akrivis.in/mcp"}