# AgentData

> Free company intelligence for AI agents and growth teams: tech stack, email addresses with verification status, web signals and decision-makers for any company, via web, REST API or MCP server. Free forever; company, tech and signal endpoints need no key.

AgentData has indexed 133,126,016+ company domains and profiled 23M of them (name, tech stack, email pattern, signals; any other domain is profiled on request, usually within a few minutes), with 16,096,228+ email addresses found (every address carries a verification_status), 4077+ technologies detected and 5,612,560+ people profiles, refreshed continuously by Ady, its crawling agent. The live data page (https://agentdata.run/data) shows coverage, verification and freshness. Limits (free account): 1,000 contact reveals per day, 5,000 requests per 5 hours, 5 requests per second; without a key, company, tech and signal endpoints allow 300 requests per 5 hours and 200 distinct companies a day per IP. Contact reveals reset at midnight UTC; a company you have already revealed stays open for 30 days without using another. Pro ($99/year): 10,000 reveals per day. Built in the UK by Nick and Duda Timms (https://useagentdata.com/about), whose commercial products are Drag (dragapp.com, shared inboxes for Gmail, 240,000+ users) and HeyHelp (heyhelp.ai, AI email assistant for Gmail), which is why AgentData is free. Operated by DragApp.com Ltd, registered in England and Wales (company number 10835737).

The app, the API documentation and the MCP server are on agentdata.run; guides, comparisons, pricing and the About page are here on useagentdata.com.

## Start here

- [About AgentData](https://useagentdata.com/about): who builds AgentData (Nick and Duda Timms, UK), how a fact gets onto a page, how the data is checked, company details and contact
- [How it works](https://useagentdata.com/how-it-works): a worked conversation showing lookup, on-demand crawling, list queries, MCP setup and the limits

## In the app (agentdata.run)

The app, the REST API, the MCP server and the live data are on agentdata.run. Its own llms.txt is at https://agentdata.run/llms.txt.

- [API documentation](https://agentdata.run/docs): endpoints, authentication, rate limits and examples for the REST API
- [Sign up](https://agentdata.run/signup): free account with an API key issued on first login
- [MCP server guide](https://agentdata.run/docs/mcp): connect AgentData to Claude, Claude Code, Cursor, VS Code or any MCP client; tools, limits and privacy
- [MCP server](https://mcp.agentdata.run/mcp): hosted Streamable HTTP endpoint for Claude, Cursor and other MCP clients; no key needed for company, technology and signal tools (details below)

## MCP server

Hosted at https://mcp.agentdata.run/mcp (Streamable HTTP). Read-only tools. Without a key the tools give what agentdata.run shows to a visitor who is not signed in: lookup_company (the public company page: facts, tech stack, email format, general inboxes, people's titles and LinkedIn URLs, activity, changes, similar companies), search_companies, find_people (the first 20 matches, as on the public people directory), get_technologies, get_signals and check_usage. Personal email addresses (lookup_company with a key, get_person) and full people results need a free API key (no card) sent as `Authorization: Bearer YOUR_API_KEY`. Every response ends with a usage line so an agent can pace itself.

- [Add to Claude Code without a key](https://agentdata.run/docs): `claude mcp add --transport http agentdata https://mcp.agentdata.run/mcp`
- [Add to Claude Code with a free key](https://agentdata.run/settings): `claude mcp add --transport http agentdata https://mcp.agentdata.run/mcp --header "Authorization: Bearer YOUR_API_KEY"`
- [claude.ai custom connector](https://agentdata.run/docs/mcp): add the URL with no auth; the keyless tools work there (company profiles, search, technologies, signals)
- [MCP server source (GitHub)](https://github.com/nick-timms/agentdata-mcp-server): tools, limits, example prompts and a local stdio option (npm package agentdata-mcp-server)

## Alternatives

AgentData is a free alternative to paid data providers.

- [Apollo alternative](https://useagentdata.com/apollo-alternative): how AgentData compares with Apollo
- [ZoomInfo alternative](https://useagentdata.com/zoominfo-alternative): how AgentData compares with ZoomInfo
- [Hunter alternative](https://useagentdata.com/hunter-alternative): how AgentData compares with Hunter
- [BuiltWith alternative](https://useagentdata.com/builtwith-alternative): how AgentData compares with BuiltWith
- [Clearbit alternative](https://useagentdata.com/clearbit-alternative): how AgentData compares with Clearbit
- [Lusha alternative](https://useagentdata.com/lusha-alternative): how AgentData compares with Lusha
- [Cognism alternative](https://useagentdata.com/cognism-alternative): how AgentData compares with Cognism
- [MoltSets alternative](https://useagentdata.com/moltsets-alternative): how AgentData compares with MoltSets
- [All comparisons](https://useagentdata.com/compare): every alternative page side by side

## Blog

- [7 Best BuiltWith Alternatives in 2026 (Free Options First)](https://useagentdata.com/blog/builtwith-alternatives)
- [The Best MCP Servers for Sales and B2B Data in 2026: 12 Compared](https://useagentdata.com/blog/best-mcp-servers-for-sales)
- [Claude Code for Sales Prospecting: Free Company Data in 5 Minutes](https://useagentdata.com/blog/claude-code-sales-prospecting)
- [6 Best MoltSets Alternatives in 2026 (Free Options First)](https://useagentdata.com/blog/moltsets-alternatives)
- [Free Apollo Alternative (2026): Everything Apollo Gates Behind Paid Tiers, for $0](https://useagentdata.com/blog/free-apollo-alternative)
- [The Free B2B Company Data API for AI Agents (2026)](https://useagentdata.com/blog/free-b2b-data-api-for-ai-agents)
- [How to Build Better Instantly Lead Lists with AgentData (Free)](https://useagentdata.com/blog/instantly-lead-lists)

## Optional

- [Pricing](https://useagentdata.com/pricing): why it is free, and the optional Pro plan
- [Live data](https://agentdata.run/data): what we have, how complete and how fresh it is, and how it was collected
- [Browse the data](https://agentdata.run/companies): companies, technologies, people and local businesses, on agentdata.run
- [Privacy policy](https://agentdata.run/legal/privacy)
- [Data removal](https://agentdata.run/legal/data-removal): how a company or person asks to be removed