{"id":3131,"name":"Numbers Online — phone intelligence","description":"Read-only phone intelligence for AI agents: validity, line type, range carrier, country, caller name (CNAM), STIR/SHAKEN verstat, a labeled spam signal, and a first-party do-not-contact (DNC) signal, with Ed25519-signed receipts. Every field is a supplementary, low-confidence signal; the calling agent keeps every routing and dialing decision.","card_url":"https://numbers.online/.well-known/agent-card.json","endpoint":"https://numbers.online/api/v1/a2a","protocol_version":"0.3.0","first_seen":"2026-10-08T14:33:27.597748+00:00","last_verified":"2026-10-08T14:33:27.597748+00:00","card":{"url":"https://numbers.online/api/v1/a2a","name":"Numbers Online — phone intelligence","skills":[{"id":"phone_lookup","name":"Phone number intelligence","tags":["phone","telephony","caller-id","cnam","line-type","spam","dnc","e164"],"examples":["Look up +14155552671","What do you know about +442071838750?"],"inputModes":["text/plain"],"description":"Return a supplementary, low-confidence intelligence bundle for a phone number: validity, formatting, line type, range carrier, country, caller name (CNAM where available), STIR/SHAKEN verstat, a labeled spam signal, and a first-party do-not-contact (DNC) signal — a suppression preference registered by the number's own owner, never a copy of any government registry. Advisory only.","outputModes":["application/json","text/plain"]},{"id":"line_type","name":"Line type","tags":["phone","line-type","carrier","e164"],"examples":["Is +14155552671 a mobile or landline?"],"inputModes":["text/plain"],"description":"Return only the deterministic fields for a number — validity, line type (mobile / fixed line / VoIP / …), range carrier, country, and formatting. Free, fast classification; no paid dip.","outputModes":["application/json","text/plain"]},{"id":"caller_risk","name":"Caller risk signal","tags":["phone","spam","risk","stir-shaken","dnc"],"examples":["How risky is an inbound call from +14155552671?"],"inputModes":["text/plain"],"description":"Return a labeled, low-confidence risk read for an inbound caller: a spam signal (0–100, higher = riskier), verstat passthrough, and a first-party do-not-contact (DNC) signal — without a name dip. A supplementary input to the agent's own policy, never a verdict on whether to accept or reject a call.","outputModes":["application/json","text/plain"]},{"id":"dnc_check","name":"Do-not-contact supplementary signal","tags":["phone","dnc","tcpa","suppression","consent"],"examples":["Has +14155552671 registered a do-not-contact preference?"],"inputModes":["text/plain"],"description":"Return a first-party do-not-contact signal (suppress / no_match / unknown) for a number, sourced ONLY from suppression preferences registered and verified by the number's own owner inside Numbers Online — never a copy of any government or licensed do-not-call registry. Comes with a signed receipt recording the status \"as of T\". Advisory only.","outputModes":["application/json","text/plain"]}],"iconUrl":"https://numbers.online/android-chrome-512x512.png","version":"1.0.0","provider":{"url":"https://numbers.online","organization":"Numbers Online"},"security":[{"apiKey":[]}],"description":"Read-only phone intelligence for AI agents: validity, line type, range carrier, country, caller name (CNAM), STIR/SHAKEN verstat, a labeled spam signal, and a first-party do-not-contact (DNC) signal, with Ed25519-signed receipts. Every field is a supplementary, low-confidence signal; the calling agent keeps every routing and dialing decision.","capabilities":{"streaming":false,"pushNotifications":false,"stateTransitionHistory":false},"protocolVersion":"0.3.0","securitySchemes":{"apiKey":{"type":"http","scheme":"bearer","description":"A Numbers Online API key with the agent (mcp) use case. Get one at numbers.online."}},"documentationUrl":"https://numbers.online/docs","defaultInputModes":["text/plain"],"defaultOutputModes":["application/json","text/plain"],"preferredTransport":"JSONRPC"},"signature_status":"unsigned","signature_detail":"No card signature supplied","signature_key_url":null,"signature_checked_at":"2026-10-08T14:33:27.597748+00:00","domain_claimed_at":null,"domain_proof_checked_at":null,"source_name":"Global A2A Registry","source_url":"https://api.a2a-registry.org/public/agents","last_check":{"checked_at":"2026-10-08T14:33:27.597748+00:00","success":true,"http_status":200,"detail":"Agent Card validated"},"skills":[{"skill_id":"caller_risk","name":"Caller risk signal","description":"Return a labeled, low-confidence risk read for an inbound caller: a spam signal (0–100, higher = riskier), verstat passthrough, and a first-party do-not-contact (DNC) signal — without a name dip. A supplementary input to the agent's own policy, never a verdict on whether to accept or reject a call.","tags":["phone","spam","risk","stir-shaken","dnc"],"quality_warning":false},{"skill_id":"dnc_check","name":"Do-not-contact supplementary signal","description":"Return a first-party do-not-contact signal (suppress / no_match / unknown) for a number, sourced ONLY from suppression preferences registered and verified by the number's own owner inside Numbers Online — never a copy of any government or licensed do-not-call registry. Comes with a signed receipt recording the status \"as of T\". Advisory only.","tags":["phone","dnc","tcpa","suppression","consent"],"quality_warning":false},{"skill_id":"line_type","name":"Line type","description":"Return only the deterministic fields for a number — validity, line type (mobile / fixed line / VoIP / …), range carrier, country, and formatting. Free, fast classification; no paid dip.","tags":["phone","line-type","carrier","e164"],"quality_warning":false},{"skill_id":"phone_lookup","name":"Phone number intelligence","description":"Return a supplementary, low-confidence intelligence bundle for a phone number: validity, formatting, line type, range carrier, country, caller name (CNAM where available), STIR/SHAKEN verstat, a labeled spam signal, and a first-party do-not-contact (DNC) signal — a suppression preference registered by the number's own owner, never a copy of any government registry. Advisory only.","tags":["phone","telephony","caller-id","cnam","line-type","spam","dnc","e164"],"quality_warning":false}],"quality_flags":[],"check_history":{"checks":1,"passed":1},"recent_checks":[{"checked_at":"2026-10-08T14:33:27.597748+00:00","success":true,"http_status":200,"detail":"Agent Card validated"}],"endpoint_tls_check":null,"protocol_check":null,"events":[],"relationships":[],"verification":{"agent_card_url":"https://numbers.online/.well-known/agent-card.json","last_successful_card_check":"2026-10-08T14:33:27.597748+00:00","latest_card_check":{"checked_at":"2026-10-08T14:33:27.597748+00:00","success":true,"http_status":200,"detail":"Agent Card validated"},"signature_status":"unsigned","signature_checked_at":"2026-10-08T14:33:27.597748+00:00","task_endpoint_tested":false,"task_execution_tested":false,"endpoint_tls_checked_at":null,"endpoint_tls_reachable":null,"protocol_check_state":null,"protocol_checked_at":null,"provider_identity_verified":false,"domain_claimed_at":null,"domain_proof_checked_at":null}}