Numberbroom MCP server
Verify US phone numbers: line type, carrier, and TCPA litigator status via the NumberBroom API.
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If you have run it, two minutes of your experience saves the next person an afternoon.
Numberbroom tools (2)
write = sends, deletes, buys or postsget_credit_balanceFreeCheck the remaining pre-paid API credit balance for the connected NumberBroom account. Free to call — does not spend credits.
verify_phone_numberFreeVerify a single US phone number: carrier-level line type (mobile, landline, VoIP, disconnected), carrier name, an activity score, and whether the number is a known TCPA litigator. Does not check Do Not Call registries. Costs $0.20, charged against the caller's NumberBroom API credit balance — a number that fails to parse as a phone number is not charged. Get an API key at https://numberbroom.com/settings.
Public scan report
scanner v0.1.5 · 2026-09-19 · same rubric, same numbers if you re-run it
- –Code scanremote-only server, no package to scann/a
- Live reliabilityremote reachable in 783ms20/20
- Tool poisoning2 tool descriptions checked15/15
- Auth qualityAPI key sent as a header8/15
- Maintenancelast push 5 days ago15/15
- Maintainer identityregistry namespace matches repository owner6/10
Install directly
claude mcp add --transport http numberbroom-mcp https://numberbroom.com/mcp
Numberbroom: common questions
- Is Numberbroom MCP server safe?
- Yes, by our scan: it is graded A (85/100). Read the Numberbroom safety report
- How do I install Numberbroom?
- It runs remotely at numberbroom.com. Add it to Claude Code, Claude Desktop or Cursor with the snippets above, or call it through the mcp.market gateway without installing anything.
- Does Numberbroom need an API key?
- Yes. The registry entry asks for
Authorization. - Is Numberbroom maintained?
- The last commit was 6 days ago (2026-09-14). The latest release is v1.0.1.
- Is Numberbroom up?
- 100% of our last 7 checks got an answer. We check remote servers about four times a day.