Nose for Leads

Verified local-business leads, built for agents.

Nose for Leads is an MCP server that finds, filters, and verifies local-business leads on demand: agents get back a send-ready list of contacts, not raw scrape data. Every email carries a machine-readable verification receipt (verifier, verdict, timestamp) so an agent can act on it without a human double-checking. Access is credit-based with per-key spend budgets and daily caps, so an agent can be handed a key without a blank check.

- Endpoint:https://api.noseforleads.com/mcp(streamable HTTP; OAuth 2.1 with dynamic client registration, or anX-API-Keyheader)
- Website:https://www.noseforleads.com/mcp-server-local-business-leads
- Full agent guide:https://www.noseforleads.com/agents.md
- OpenAPI (REST surface):https://api.noseforleads.com/openapi.json
- Sign up (25 free validated leads):https://app.noseforleads.com/signup

claude mcp add --transport http nose-for-leads https://api.noseforleads.com/mcp claude mcp login nose-for-leads

# ~/.codex/config.toml [mcp_servers.nose-for-leads] url = "https://api.noseforleads.com/mcp"

If OAuth gives you trouble, the API-key header works in Codex too:env_http_headers = { "X-API-Key" = "YOUR_ENV_VAR" }under the same block.

Point your client's HTTP server config athttps://api.noseforleads.com/mcp. Cursor's.cursor/mcp.json(and any client that reads the standard shape):

{ "mcpServers": { "nose-for-leads": { "type": "http", "url": "https://api.noseforleads.com/mcp" } } }

Clients that only speak stdio can use the standardmcp-remoteproxy:

npx -y mcp-remote https://api.noseforleads.com/mcp

The repo'sDockerfilepackages the same shim (docker build -t nose-for-leads-mcp . && docker run -i nose-for-leads-mcp). Listing tools works without auth; tool calls trigger the OAuth flow (or pass the API-key header via--header "X-API-Key: ...").

API key (scripts, CI, clients without OAuth)

Mint a key athttps://app.noseforleads.com/keysand pass it as a header:X-API-Key: <your key>(orAuthorization: Bearer <your key>). Keys can carry a total and/or daily credit budget, so a runaway loop stops at the cap with abudget_exhaustederror instead of draining the account.

Rows returned byfetch_resultscarry a receipt when a live verification exists:verified_by(which verifier),verified_at(when), andverifier_verdict(the result). A receipt proves the email was checked against the live mailbox provider, not merely pattern-matched. Seeexamples/for real transcript shapes.

- 1 credit = 1 validated lead; 25 free at signup, prepaid packs from $19.99 for 200.
- A campaign that discovers more leads than the balance covers delivers what the credits cover and endsdone_partialinstead of failing.
- Per-key budgets are enforced before the account balance, andstart_campaignhonorsidempotency_key, so a retry never double-charges.
- Errors return a plain{code, message}envelope (e.g.payment_required,budget_exhausted,quota_exceededwithretry_after). The full table is in theagent guide.

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