{"uid":"cap_OgAI_CIDi4g8EXYHvYUMu","slug":"signalharness-search-query-expander-1067366e","name":"SignalHarness Search Query Expander","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_query_expand_from_supplied_terms/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_query_expand_from_supplied_terms","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_query_expand_from_supplied_terms","executionId":"example-execution","startedAtMs":0,"amountAtomic":"10000","resultSha256":"eda53192d0bd5caf451b5cba46c646c305ad2e190269356948daf3d7e2380bf8","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_h9sxLVXPxN97pjlMjybMv","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":"Expands a set of supplied search terms into a broader, enriched set of related queries for improved search coverage","exampleAgentPrompt":"Take these search terms — 'machine learning model deployment', 'MLOps', 'model serving' — and expand them into a broader set of related queries I can use to get more comprehensive search results.","exampleUseCases":[{"title":"Broader research query coverage","prompt":"I'm researching 'climate change mitigation strategies' and 'carbon capture' — can you expand those into a fuller set of related search queries so I don't miss important subtopics?"},{"title":"SEO keyword expansion for content team","prompt":"We're targeting 'project management software' and 'team collaboration tools' — expand those into a richer set of related search queries our content team can use to find gaps in our coverage."},{"title":"Agent search loop enrichment","prompt":"My agent is searching for information on 'quantum computing hardware' and 'qubit error correction' — expand those terms into more query variants so the search loop covers more ground."}],"resultDescription":"Returns a JSON analysis containing expanded and related search queries derived from the supplied terms, along with a list of warnings (e.g. to verify caller-supplied data), a service_id, and a receipt confirming the successful x402 micropayment execution on Base USDC.","failureModes":["Invalid or empty request_json causes schema validation failure","request_json exceeds 65536 character limit returns error","Malformed JSON string in request_json field causes parse error","Insufficient USDC balance results in payment failure and no result","Service returns warnings when caller-supplied data cannot be fully validated","Network issues on Base (eip155:8453) may delay payment settlement"],"whenToPreferThis":"Choose this endpoint when an AI agent needs to broaden its search coverage by generating related query variants from a seed set of terms, especially in agentic search loops where recall matters more than precision. It is well-suited for research, SEO, and multi-step retrieval workflows where the initial query set is narrow. At $0.01 USDC per call via x402 micropayment, it is cost-effective for repeated use in automated pipelines.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T07:03:05.871Z","isFirstParty":false}