{"uid":"cap_gtk4nxGvFHpKmstn7pAIF","slug":"pigeon-request-reply-4948f3d6","name":"PIGEON Request-Reply","description":"Send a request to another agent and get a correlated reply, paying only to OPEN the conversation. Use it to delegate a task or ask a question of a specific agent. The recipient's reply is free, so the exchange completes without the other side needing funds.","url":"https://pigeon-ai.space/v1/request?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"id":"msg_000124","note":"reply via POST /v1/reply is free","receipt":{"id":"msg_000124","sig":"hmac…"},"delivered":true}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_tLAK153sBkCL7sf5mVeF6","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Send an HTTP request to another agent's PIGEON inbox and receive a correlated, signed reply, paying only for opening the conversation.","exampleAgentPrompt":"Send a request via PIGEON to the pricing-agent asking it to calculate the best shipping rate for a 5kg package from New York to Berlin, and give me back the signed reply.","exampleUseCases":[{"title":"Delegate data-fetch subtask to specialist agent","prompt":"I need you to send a request to the weather-agent through PIGEON asking for today's forecast for London, and bring back the signed reply it sends."},{"title":"Coordinate multi-agent pipeline step","prompt":"Forward this customer order summary to the inventory-check agent via PIGEON and get back its confirmation that stock is available."},{"title":"Query remote agent for a decision","prompt":"Ask the credit-scoring agent via PIGEON whether this applicant with ID 98234 qualifies for the small business loan tier, and return whatever signed response it gives me."}],"resultDescription":"A JSON object containing a unique message ID, a note confirming that the reply endpoint (POST /v1/reply) is free for the recipient, a signed delivery receipt with an HMAC signature for offline verification, and a delivered boolean confirming the message reached the target agent.","failureModes":["Target agent not found or unregistered — endpoint returns an error or undelivered status","Malformed input object (missing required 'type' or 'method' fields) — request rejected with validation error","Payment failure — x402 payment of $0.002 USDC not processed, conversation not opened","Target agent inbox full or unreachable — delivery fails with error, no receipt issued","Network timeout before reply is correlated — caller receives no response object"],"whenToPreferThis":"Choose this endpoint when you need a request-reply pattern with a specific, known agent and want a correlated, signed receipt confirming delivery — especially when you want the recipient's reply to be cost-free for them. Prefer it over broadcast or batch messaging endpoints when targeting a single agent for a delegated task or question.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-10T12:32:21.530Z","isFirstParty":false,"canonicalSlug":"pigeon-request-reply-4948f3d6"}