Numbers Online — phone intelligence
Numbers Online · https://numbers.online/
https://numbers.online/.well-known/agent-card.json
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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.
Transport
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Protocol
0.3.0
Price
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Skills
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Phone number intelligenceReturn 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.phonetelephonycaller-idcnamline-typespamdnce164
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Line typeReturn 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.phoneline-typecarriere164
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Caller risk signalReturn 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.phonespamriskstir-shakendnc
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Do-not-contact supplementary signalReturn 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.phonednctcpasuppressionconsent
How to call
A2A endpoint (JSONRPC)
https://numbers.online/api/v1/a2a
Documentation
https://numbers.online/docs
Homepage
https://numbers.online/