{"audit":{"version":"1.4","generated_at":"2026-08-19T19:49:38.663676+00:00","generated_by":"Agenstry","report_url":"https://agenstry.com/agents/useful-data-source-for-agents-production.up.railway.app","methodology_url":"https://agenstry.com/methodology","verifier_jwks_url":"https://agenstry.com/.well-known/jwks.json","subject":{"domain":"useful-data-source-for-agents-production.up.railway.app","name":"BuyWhere Singapore Value Intelligence API","url":"https://useful-data-source-for-agents-production.up.railway.app/.well-known/agent-card.json"}},"identity":{"provider":{"organization":"nexus-mcp-infra","url":"https://github.com/nexus-mcp-infra/useful-data-source-for-agents-doing-product-price-sdk"},"registry_verification":null,"signature":{"signed":false,"signature_valid":null}},"protocol":{"version":null,"supports_streaming":false,"supports_push_notifications":false},"operational":{"live_state":"endpoint_404","live_responds":false,"last_status_code":404,"last_elapsed_ms":null,"last_error":"HTTP 404"},"track_record":{"first_seen":"2026-07-27T03:00:45.008567+00:00","last_checked":"2026-08-19T09:25:18.435625+00:00","last_seen_ok":"2026-08-04T06:07:07.409327+00:00","checks_total":45,"checks_ok":14,"uptime_pct":31.1,"archived":false,"archived_reason":null},"conformance":{"score":33,"grade":"F","summary":"F-grade: card is reachable but fails most operational signals.","criteria":[{"key":"valid_card","label":"Valid AgentCard","points":10,"max_points":10,"status":"pass","detail":"Parseable AgentCard returned by the well-known endpoint (Agenstry readiness signal; not an official TCK certification)."},{"key":"live_responds","label":"Live JSON-RPC","points":0,"max_points":25,"status":"fail","detail":"Card declares a URL but that URL returns 404."},{"key":"protocol_version","label":"Protocol version","points":0,"max_points":10,"status":"fail","detail":"No protocolVersion in card."},{"key":"signature","label":"JWS signature","points":0,"max_points":10,"status":"info","detail":"Card is unsigned (most published agents are)."},{"key":"uptime","label":"Uptime track record","points":5,"max_points":15,"status":"fail","detail":"14/45 probes succeeded (31% uptime)."},{"key":"skills","label":"Skill declaration","points":6,"max_points":10,"status":"partial","detail":"Declares 2 skill, usable but thin."},{"key":"verified_identity","label":"Verified Identity","points":5,"max_points":10,"status":"partial","detail":"Provider declared: nexus-mcp-infra (https://github.com/nexus-mcp-infra/useful-data-source-for-agents-doing-product-price-sdk). Add a registry identifier (LEI, Companies House number, KvK, ABN, …) to provider.legalEntity for full verified-business credit."},{"key":"freshness","label":"Freshness + modern flags","points":5,"max_points":5,"status":"pass","detail":"declares 1 modern capability flag(s) (x402); seen in upstream source within 0d"},{"key":"security","label":"Security declaration","points":2,"max_points":5,"status":"partial","detail":"Declares 2 security scheme(s) but none use PKCE or mTLS."}]},"card_read":{"findings":null,"clean":null,"source_url":"https://useful-data-source-for-agents-production.up.railway.app/.well-known/agent-card.json"},"skills":[{"id":"nexus_useful_data_source_for_agents_doing_prod_rank_buywhere_products_by_value_score","name":"Rank BuyWhere Products by Value Score","description":"Searches the BuyWhere Singapore catalogue for products matching a natural-language query and returns them ranked by an auditable value-score derived from Shannon entropy of cross-vendor price variance, causal reliability, and price rank. 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Requires a valid api_key (same as X-API-Key) and an x402 payment.","tags":["price-distribution","entropy"],"examples":[],"inputModes":[],"outputModes":[]}],"provenance":[{"source":"mcp_registry","first_seen":"2026-07-27T03:00:45.008567+00:00"},{"source":"recrawl_warm","first_seen":"2026-08-06T02:55:18.811848+00:00"}],"recent_probes":[{"fetched_at":"2026-08-19T09:25:18.435625+00:00","ok":false,"status_code":404,"error":"HTTP 404","elapsed_ms":null,"live_responds":null},{"fetched_at":"2026-08-19T01:31:10.086724+00:00","ok":false,"status_code":404,"error":"HTTP 404","elapsed_ms":null,"live_responds":null},{"fetched_at":"2026-08-18T18:48:40.216995+00:00","ok":false,"status_code":404,"error":"HTTP 404","elapsed_ms":null,"live_responds":null},{"fetched_at":"2026-08-18T08:41:45.713471+00:00","ok":false,"status_code":404,"error":"HTTP 404","elapsed_ms":null,"live_responds":null},{"fetched_at":"2026-08-18T01:52:49.413816+00:00","ok":false,"status_code":404,"error":"HTTP 404","elapsed_ms":null,"live_responds":null},{"fetched_at":"2026-08-17T06:32:21.261510+00:00","ok":false,"status_code":404,"error":"HTTP 404","elapsed_ms":null,"live_responds":null},{"fetched_at":"2026-08-16T20:24:08.735167+00:00","ok":false,"status_code":404,"error":"HTTP 404","elapsed_ms":null,"live_responds":null},{"fetched_at":"2026-08-16T06:14:14.947355+00:00","ok":false,"status_code":404,"error":"HTTP 404","elapsed_ms":null,"live_responds":null},{"fetched_at":"2026-08-16T03:02:26.057689+00:00","ok":false,"status_code":404,"error":"HTTP 404","elapsed_ms":null,"live_responds":null},{"fetched_at":"2026-08-15T08:53:02.885124+00:00","ok":false,"status_code":404,"error":"HTTP 404","elapsed_ms":null,"live_responds":null}],"catalog_attestation":null,"operator_revenue_evidence":{"evidence_class":"operator_submitted","authenticity":{"rung":"no_operator_evidence","rank":0,"why":"No verifiable operator evidence has been submitted for this agent.","thresholds":{"min_independent_payers":3,"min_verified_usd":25.0},"engine_table":"agent_authenticity","merge_rule":"max(existing_rank, rank)"},"metric_metadata":{"provenance":"operator_submitted_evidence","confidence":"attested","coverage":{"numerator":0},"as_of":"2026-08-19T19:49:38.668419+00:00","definition":"Revenue proofs submitted by the verified owner and re-checked by Agenstry against the settlement chain or the operator's own Stripe account. Only independently confirmed proofs are counted."},"counts":{"retained":0,"verified":0,"unverifiable":0},"verified":{"gross_usd":0.0,"transactions":0,"independent_payers":0},"detail_url":"https://agenstry.com/api/agents/useful-data-source-for-agents-production.up.railway.app/evidence","dispute_url":"https://agenstry.com/agents/useful-data-source-for-agents-production.up.railway.app/dispute"},"verification_history":[]}