USACallerLookup

USACallerLookup Free Phone Lookup API

No-auth, read-only REST API with three GET endpoints: reverse phone number lookup, area-code aggregates, and dataset stats. Backed by a public OpenAPI 3.1.0 contract.

GitHub OpenAPI

Documentation

📖
Documentation
https://www.usacallerlookup.com/api/

Specifications

⚙
OpenAPI
https://www.usacallerlookup.com/wp-content/uploads/api/openapi.json

Other Resources

🔗
LLMsTxt
https://www.usacallerlookup.com/llms.txt
🔗
APIsJSON
https://raw.githubusercontent.com/api-evangelist/usacallerlookup/refs/heads/main/apis.yml

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this
  • find_apisBrowse and filter every API in the catalog.
  • get_api_artifactsOne API's artifacts, grouped by type.
  • get_openapiThe primary OpenAPI for this API.
  • find_similar_apisAPIs that look like this one.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This API 
curl "https://apis.io/api/v1/apis/usacallerlookup-free-phone-lookup-api"
All apis 
curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.

OpenAPI Specification

openapi.json Raw ↑