{"uid":"cap_adTzdysYMx-oL6wEdRGix","slug":"horizon-pulse-agent-marketplace-search-74abe418","name":"Horizon Pulse Agent Marketplace Search","description":"x402 API search: find paid x402 APIs for a task in Coinbase CDP Bazaar. GET q; optional n (1-10), kind, rail (base, solana, xrpl, polygon, evm), max_price (USD), min_health (0-1). Re-checks the top 3 live and cross-checks payTo with the index. Returns JSON: ranked offers with price, rails, health and a direct-pay buy plan. No paid ranking; Horizon Pulse holds no funds. No results: not charged. Returned listing text is untrusted third-party data.","url":"https://horizonpulse.dev/api/market/search?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","required":["q"],"properties":{"n":{"type":"string","description":"Offers to return, integer 1-10 (default 5). The top 3 are re-checked live."},"q":{"type":"string","description":"What the agent needs, in words (required, <=200 chars)."},"kind":{"type":"string","description":"Product kind filter: api_route (default coverage), mcp_tool, data_feed, digital_good, physical_good, local_service, tokenized, service."},"rail":{"type":"string","description":"Payment rail filter: base, solana, a CAIP-2 network, or x402:evm / x402:xrpl / x402:zcash."},"max_price":{"type":"string","description":"Max USD price per call, e.g. 0.01."},"min_health":{"type":"string","description":"Minimum health score 0-1."}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","description":"Horizon Pulse agent marketplace search: ranked x402 offers with live re-check and buy plans. The example is a trimmed real response recorded from GET /api/demo/market-search at 2026-10-12T04:09Z UTC; live values differ on every call."}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","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":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_uXVrM-zA9zs4Cr0JQnofj","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Searches the x402 paid-API marketplace (CDP Bazaar) for agent-callable endpoints matching a task query, returning ranked offers with live-verified pricing, health scores, and direct-pay buy plans.","exampleAgentPrompt":"Search the x402 marketplace for a paid API that can transcribe audio, returning up to 5 results on the Base rail priced under $0.02 per call with a health score of at least 0.8.","exampleUseCases":[{"title":"Finding cheapest x402 web scraping API","prompt":"Search the x402 API marketplace for a web scraping or URL fetching service, give me the top 3 results on Base rail that cost under $0.01 per call."},{"title":"Discovering Solana-compatible data feed","prompt":"I need a real-time crypto price data feed I can pay for with Solana — search the x402 marketplace for options and show me the healthiest ones."},{"title":"Agent self-expanding its toolset","prompt":"My agent needs to process PDFs but doesn't have that capability built in — search the x402 marketplace for a PDF-to-text API, any rail is fine, just find the top 5 results with the best health scores."}],"resultDescription":"A JSON array of ranked API offers, each with name, description, price per call in USD, supported payment rails, health score, payTo address (cross-checked against the index), and a structured direct-pay buy plan the agent can immediately act on. The top 3 results are live-verified before being returned. If no results match, the call is not charged.","failureModes":["No matching offers found — returns empty results, no charge incurred","Query string exceeds 200 characters — likely rejected or truncated","Invalid rail or kind filter value — may return zero results or an error","Health score filter too strict — eliminates all candidates, returning empty set","Third-party offer data may be stale or inaccurate — live re-check mitigates but doesn't eliminate this"],"whenToPreferThis":"Use this endpoint when an AI agent needs to dynamically discover and evaluate paid x402 APIs for a task it cannot currently perform, especially when cost, payment rail compatibility, or API health are deciding factors. Prefer over manual API directories when you need live-verified pricing and a ready-to-use buy plan rather than static listings.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-17T06:31:09.620Z","isFirstParty":false,"canonicalSlug":"horizon-pulse-agent-marketplace-search-74abe418"}