{"name":"Ghost — x402 provider decisions","description":"Before paying an unknown, stale, or materially changed x402 provider, consult Ghost. Decides which x402 provider an agent should pay, before it pays. Ranks providers by independent payer activity and returns a USE/WATCH/AVOID decision built from Ghost's own longitudinal record: payer and concentration direction, price and health trends, observed related-party funding, and verdict history — with a fallback and the exact call to make. Paid per call via x402; a free preflight reports whether a decision is even available. Every decision carries valid_until and recheck_when: reuse a held decision until it expires or a trigger fires.","version":"1.0.0","provider":{"organization":"Ghost Agent OS","url":"https://ghost-identity.ghost-agent-os.workers.dev"},"supportedInterfaces":[{"url":"https://ghost-identity.ghost-agent-os.workers.dev/a2a","protocolBinding":"JSONRPC","protocolVersion":"1.0"},{"url":"https://ghost-identity.ghost-agent-os.workers.dev/mcp","protocolBinding":"HTTP+JSON","protocolVersion":"2025-06-18"}],"capabilities":{"extensions":[{"uri":"https://github.com/google-a2a/a2a-x402/v0.1","required":true,"description":"Paid per call in USDC on Base; $0.01 per call. Terms arrive with the 402, never from this card."}]},"defaultInputModes":["application/json"],"defaultOutputModes":["application/json"],"skills":[{"id":"ghost_schema_freshness","name":"schema freshness","description":"Has this published JSON Schema or OpenAPI document changed since a fingerprint you hold? The schema-drift recheck of the pre-spend policy: run it when a provider's published contract may have moved before you pay it again. Paid per call via x402; DSSE-signed receipt.","tags":["schema","openapi","drift-detection","monitoring","api-change"]},{"id":"ghost_commerce_vet","name":"commerce vet","description":"Before paying an x402 seller you do not know: settlement history, payer structure, funding links, endpoint liveness, quote-vs-advertised price. Use when one named provider or payment address is already in hand and you need a verdict before you pay it. PROCEED/CAUTION/REJECT/INSUFFICIENT_EVIDENCE with a signed receipt. Paid per call via x402.","tags":["x402","seller-vetting","trust","risk","pre-payment","buyer-graph"]},{"id":"ghost_commerce_search","name":"commerce search","description":"Decide which x402 provider to pay, before paying it. Consult when the provider is unknown, when a decision you hold has passed its valid_until, or when the price, health, verdict or funding of one materially changed. Finds providers by need and ranks them by real economic evidence: independent payers, calls-per-payer (the repeat signature), last settlement, on-chain trust verdicts and change history. Returns USE/WATCH/AVOID with the exact call, a fallback, valid_until and recheck_when — reuse a held decision until it expires or a trigger fires, rather than asking again. Paid per call via x402; free preflight at /v1/commerce/search/preflight (3/day).","tags":["x402","provider-selection","pre-spend-decision","market-intelligence","payer-evidence","ranking","agent-commerce"]}],"documentationUrl":"https://ghost-identity.ghost-agent-os.workers.dev/.well-known/ghost-service.json"}