{"uid":"cap__widLc1KRPHLwZtEN6aBE","slug":"signalharness-search-result-cluster-by-domain-or-metadata-2b8f6c2c","name":"SignalHarness Search Result Cluster by Domain or Metadata","description":"Explore 330 pay-per-call x402 API services and 27 agent-native digital products, with Base USDC pricing, secure Polar checkout, and free discovery.","url":"https://signalharness.ai/api/agent/services/search_result_cluster_by_domain_or_metadata/invoke","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"request_json":{"type":"string","maxLength":65536,"minLength":2}}},"responseSchema":{"type":"json","example":{"replay":false,"result":{"warnings":["Verify the caller-supplied data before relying on this result."],"service_id":"search_result_cluster_by_domain_or_metadata","analysis_json":"{\"example\":\"schema-valid caller-supplied data\"}","evidence_scope":"caller_supplied_data"},"status":"succeeded","receipt":{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","usage":[],"status":"succeeded","network":"eip155:8453","artifacts":[],"endedAtMs":0,"latencyMs":0,"paymentId":"example-payment","receiptId":"example-receipt","requestId":"example-request","serviceId":"search_result_cluster_by_domain_or_metadata","executionId":"example-execution","startedAtMs":0,"amountAtomic":"10000","resultSha256":"2795c6b6028051b7046ec288b68ae0302dc429ce073901fd52652b03793166a5","serviceVersion":"1.0.0","settlementReference":"0x0000000000000000000000000000000000000000000000000000000000000000"},"artifacts":[],"requestId":"example-request","executionId":"example-execution"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_axS1aDbc3TApwhbW0E6q9","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Clusters and groups API service search results by domain or metadata attributes to help agents discover related services","exampleAgentPrompt":"Search the SignalHarness catalog and cluster the results by domain for all services related to financial data — I want to see how they're grouped by metadata or category.","exampleUseCases":[{"title":"Discover payment APIs by domain","prompt":"Search SignalHarness for all payment-related API services and group them by domain so I can compare what's available in that space."},{"title":"Find NLP services by metadata tags","prompt":"Look up all natural language processing services on SignalHarness and cluster the results by their metadata attributes so I can see how they differ."},{"title":"Explore geospatial tool categories","prompt":"I need to explore geospatial and mapping APIs available on SignalHarness — can you search and cluster the results by domain so I understand what categories exist?"}],"resultDescription":"Returns a JSON analysis of clustered service results, grouped by domain or metadata attributes, along with warnings about caller-supplied data verification, a service ID, and a signed receipt including payment details, latency, and a SHA-256 result hash.","failureModes":["Invalid or malformed request_json may return an error or empty clusters","Caller-supplied data that fails schema validation may produce unreliable clustering","Service may return warnings if the input data cannot be fully verified","Empty result set if no services match the domain or metadata criteria","Payment failure on Base network may prevent execution"],"whenToPreferThis":"Choose this endpoint when an agent needs to discover and organize API services from the SignalHarness catalog by domain or metadata grouping rather than receiving a flat list. Prefer it over a generic search when the agent needs to understand the landscape of related services grouped by category, or when comparing service types within a domain. Best for agent orchestration workflows where knowing the shape of available tools matters before selection.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T07:02:41.681Z","isFirstParty":false}