B2B data enrichment for Claude and AI agents.
Connect the Cleanlist MCP server and give your agent 30+ tools to search, enrich, and sync B2B data, with spend caps so it can never overspend.
Quick answer
The Cleanlist MCP server connects Cleanlist's B2B data enrichment to Claude and other MCP clients. Add it in Claude, Settings, Connectors and your agent gets 30+ tools to search contacts and companies, enrich people through a 15-provider waterfall, run smart agents, and sync to your CRM. Signed-quote spend caps keep an agent from overspending your credits.
Prefer to build in your own code? Use the REST API instead.
Used by 1,500+ GTM teams
Connected in a Couple of
No API key to manage, no server to run. Authorize once from Claude and start asking.
Upgrade to a Self-Serve Plan
The MCP server is in beta on Pro plans and above. Start free to explore the product, then upgrade to unlock the connector.
- Pro plan or above (self-serve)
- 30 free credits to explore first
- Beta access, no waitlist
- Same credits as the app and API
Add the Connector in Claude
Open Claude, go to Settings then Connectors, add Cleanlist, and authorize with OAuth. There is no API key to copy and paste.
- Claude Settings, then Connectors
- One-click OAuth authorization
- No raw key to handle
- Revoke access anytime
Ask Claude
Tell Claude what you need. It calls the right Cleanlist tools, pre-flights spend with a quote, and returns verified data in the chat.
- Plain-English requests
- 30+ tools available
- Signed-quote spend caps
- Results right in the conversation
, the Whole Workflow
Claude chains the tools for you: search, estimate, enrich, and sync, with a quote before any spend.
1You: Find VPs of Sales at Series B SaaS companies in the US,2 enrich their emails, and add them to a "Q3 targets" list.34Claude calls search_people({ title: [#98c379]">"VP of Sales", ... }) # free5Claude calls estimate_cost({ tool: [#98c379]">"enrich_list", ... }) # returns a signed quote6Claude calls enrich_list({ list_id, quote_id }) # 1 credit / lead7Claude: "Done. Added 48 verified contacts to your8 Q3 targets list. That used 48 credits."What Can Do
Every Cleanlist API endpoint is exposed as an MCP tool, grouped into the jobs an agent actually runs.
Find Contacts & Companies
Ask in plain English. Claude turns it into a structured search across B2B contacts and companies with 60+ filters. Search itself is free.
Enrich Through the Waterfall
Enrich people and companies across 15+ providers: 98% verified emails, 85% direct phones. Pay only for matches.
Run Smart Agents
Have Claude run AI columns over a whole list: custom prompts, cold-intro drafts, company intel, or pain-point hypotheses.
Build & Manage Lists
Create lead lists, add or remove leads, and import CSVs, all from the conversation. No context switching.
Sync to Your CRM
Push results to HubSpot, Salesforce, Outreach, or Lemlist without leaving Claude. Export to CSV or JSON too.
Check Credits & Costs
Claude can read your balance and estimate any job before running it, so spend is always visible and never a surprise.
to Hand to an Agent
Autonomy is only useful if it cannot hurt you. The MCP server is designed so an agent stays inside guardrails.
Signed-Quote Spend Caps
Every paid action is pre-flighted with a signed estimate. The server rejects anything over the quote, so an agent cannot overspend your credits.
Scoped OAuth Access
Connect with OAuth, not a shared key. Access is scoped to your organization and you can revoke it from Claude at any time.
Free Reads & Search
Searching, reading lists, and checking credits cost nothing. You only spend credits on enriched results.
Human-in-the-Loop for Big Jobs
Large bulk operations and CRM writes require explicit approval before they run, so nothing large happens silently.
Building in your own code?
The MCP server wraps the same surface as the Cleanlist REST API. If you are shipping a product or a pipeline rather than working in Claude, call the API directly with a clapi_ Bearer token.
Frequently Asked Questions
What is the Cleanlist MCP server?
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The Cleanlist MCP server is a Model Context Protocol server that connects Cleanlist's B2B data enrichment to Claude and other MCP clients. Once connected, your AI agent gets 30+ tools to search contacts and companies, enrich people and companies through a 15-provider waterfall, run smart agents, manage lead lists, and sync to your CRM, all with signed-quote spend caps so it cannot overspend your credits. It is in beta on Cleanlist's self-serve plans.
How do I connect the Cleanlist MCP server to Claude?
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Open Claude, go to Settings and then Connectors, add the Cleanlist connector, and authorize it with OAuth. There is no API key to copy and paste; the OAuth flow links the connector to your Cleanlist organization. Once connected, ask Claude to find, enrich, or sync contacts and it will call the Cleanlist tools directly.
What can Claude do with the Cleanlist MCP server?
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Claude can search B2B contacts and companies with filters, enrich people and companies through Cleanlist's 15-provider waterfall (98% verified emails, 85% phones), run smart agents that write AI columns over a list, build and manage lead lists, and sync results to HubSpot, Salesforce, Outreach, or Lemlist. Reads and search are free; paid operations are pre-flighted with a signed quote.
Do I need an API key to use the MCP server?
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No. The MCP server uses OAuth, so you authorize it once from Claude's Connectors settings and never handle a raw key. If you would rather integrate the same capabilities into your own code, the underlying REST API uses a clapi_ Bearer key instead.
Can an AI agent overspend my credits through the MCP server?
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No. Every paid operation is gated behind a signed quote: the agent must first request an estimate, which returns a spend cap, and the server rejects the operation if the real cost would exceed it. Reads and search are free, and large jobs require explicit approval, so an agent cannot quietly run up your bill.
Which plans include the Cleanlist MCP server?
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The MCP server is in beta on Cleanlist's self-serve plans (Pro and above). You can sign up free and explore the product in the dashboard first, then upgrade to connect the MCP server and the REST API.
Which MCP clients are supported?
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Claude is the primary supported client today, connected through Settings and then Connectors. Because it is a remote MCP server with OAuth, other MCP-compatible clients that support remote servers with OAuth can connect to it as well, and support will broaden as the MCP ecosystem matures.