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Does not execute or approve payments. Pilot scope: two services; third-party public probe observations retained by MEO, not independently verified settlements. Settlement/buyer history…","description":"Read-only comparison of proposed machine payment terms with dated third-party public observations retained by MEO. Does not execute or approve payments. Pilot scope: two services; third-party public probe observations retained by MEO, not independently verified settlements. Settlement/buyer history, current activity and payment destination history are UNKNOWN. Evidence may be stale.","publisher":{"name":"Machine Economy Observatory","url":"https://machineeconomyobservatory.com"},"homepage":"https://machineeconomyobservatory.com","repository":null,"version":"0.3.0","license":null,"protocols":["a2a"],"tags":["payment-preflight","historical-evidence","read-only","base","usdc","machine-payments","preflight"],"pricing":null,"endpoints":[{"url":"https://api.machineeconomyobservatory.com","type":"a2a","auth":"none","probeable":true}],"skills":[{"id":"machine_payment_preflight","name":"Machine payment preflight","tags":["payment-preflight","historical-evidence","read-only","base","usdc"],"description":"Send exactly one JSON data part with resource, payTo, network, asset and amount as strings, using the existing Preflight input contract. Returns historical comparisons, evidence freshness and explicit unknowns. Base (eip155:8453) / USDC only; other networks/assets return UNSUPPORTED. No live resource fetch, payment execution, payment approval, or settlement verification. Each request is independent; context IDs correlate messages but no conversation history or tasks are retained. Maximum JSON-R…"}],"tools":["Machine payment preflight","machinepaymentpreflight","paymenttermshistory","pricechangedetection","economicactivitycontext","evidencefreshness"],"extra":{"ard":{"type":"application/a2a-agent-card+json","metadata":{"skillId":"machine_payment_preflight","a2aResource":"https://api.machineeconomyobservatory.com/.well-known/agent-card.json","mcpResource":"https://api.machineeconomyobservatory.com/.well-known/mcp-server-card.json","httpResource":"https://api.machineeconomyobservatory.com/openapi.json","invocationUrl":"https://api.machineeconomyobservatory.com/a2a","providerIdentity":"https://machineeconomyobservatory.com"},"identifier":"urn:air:machineeconomyobservatory.com:a2a:meo-preflight","artifactUrl":"https://api.machineeconomyobservatory.com/.well-known/agent-card.json","representativeQueries":["check the economic history of this machine service before i pay it.","compare this proposed machine payment with what has been observed before.","has this service 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