{"tools":[{"name":"get_vwap","description":"Volume-weighted average price for a trading pair over a trailing window (minutes). Live crypto market signal, pay-per-call.","price":"$0.002","paid":true,"input_schema":{"type":"object","properties":{"pair":{"type":"string","description":"e.g. BTC-USDC","default":"BTC-USDC"},"window_min":{"type":"number","description":"trailing window in minutes","default":5}}},"output_example":{"symbol":"BTC-USDC","vwap":63000.12,"window_min":5}},{"name":"get_price_proof","description":"Signed point-in-time price attestation for a pair. Returns an ed25519 signature over a canonical payload, anchored to the x402 settlement tx on X Layer — independently verifiable offline against the published public key.","price":"$0.01","paid":true,"input_schema":{"type":"object","properties":{"pair":{"type":"string","description":"e.g. BTC-USDC","default":"BTC-USDC"},"at":{"type":"string","description":"ISO-8601 timestamp (optional; defaults to now)"}}},"output_example":{"payload":{"symbol":"BTC-USDC","price":63000,"source":"okx","chain":"x-layer","settlement_txid":"0x…"},"signature":"…"}}]}