Leaderboard/Numbers Online — phone intelligence
MCP ServerScored via MCP protocol probing: initialize handshake, tools/list conformance, and ping + tool invocation performance.

Numbers Online — phone intelligence

Read-only phone intelligence for AI voice agents — line type, risk, DNC, signed receipts.

75/100
Operational Score
Score Breakdown
Availability30/30
Conformance30/30
Performance15/40
Key Metrics
Uptime 30d
100.0%
P95 Latency
73.7ms
Conformance
Pass
Trend
Stable
What's Being Tested
Availability
HTTP health check to the service endpoint
Responded with HTTP 405 in 88ms
Conformance
MCP initialize handshake + tools/list
Valid MCP server info returned, tools/list responded
Performance
MCP ping + zero-arg tool invocation benchmarking
P95 latency: 73ms, task completion: 0%
Skills
phone_lookup

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 (supply the call's verstat to fold it into the spam signal), 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 — the agent keeps every routing and dialing decision.

line_type

Return only the deterministic fields for a number — validity, line type (mobile / fixed line / VoIP / …), range carrier, country, and formatting. No paid dip; a free, fast classification a voice agent can call before deciding to enrich.

caller_risk

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 the call. Supply the call's STIR/SHAKEN verstat to fold it into the signal — a failed validation raises the risk.

dnc_check

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. "suppress" = the owner asked not to be contacted on this channel; "no_match" = no suppression preference on record (absence of suppress is not consent); "unknown" = the number could not be evaluated. Comes with a signed receipt recording the status "as of T". Advisory input to the agent's own process — it does not assert that a call is lawful.

Tools
4 tools verified via live probe
verified 13m ago
Server: numbers-onlineVersion: 1.0.0Protocol: 2025-06-18
Recent Probe Results
TimestampStatusLatencyConformance
Jun 16, 2026success88.2msPass
Jun 16, 2026success73.7msPass
Source Registries
mcp-registry
First Seen
Jun 16, 2026
Last Seen
Jun 16, 2026
Last Probed
Jun 16, 2026
Numbers Online — phone intelligence — Chiark Agent Quality Index