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Clearparty

Official registry AI and agents

KYB for AI agents: GLEIF entity, parent chain, sanctions and EU VAT checks. Data lookup only.

Source code Website Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http clearparty 'https://mcp.clearparty.dev/mcp' --header 'Authorization: <Optional, instead of OAuth sign-in: Bearer followed by your Clearparty API key (cp_live_...). Create one at https://app.clearparty.dev/account/keys.>'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "clearparty": {
            "type": "http",
            "url": "https://mcp.clearparty.dev/mcp",
            "headers": {
                "Authorization": "<Optional, instead of OAuth sign-in: Bearer followed by your Clearparty API key (cp_live_...). Create one at https://app.clearparty.dev/account/keys.>"
            }
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. Clearparty plugin for Claude Code
  2. Install
  3. Get a key
  4. What is sent, and where
  5. Other clients
  6. Terms

Clearparty plugin for Claude Code

Clearparty checks a company before your agent pays, invoices or signs a contract with it. It resolves the legal entity in GLEIF, walks its parent chain, screens every company in the chain against the OFAC, EU, UN and UK sanctions lists, and validates EU VAT numbers in VIES.

This plugin adds two things to Claude Code:

  • the Clearparty MCP server, with the tools check_counterparty, validate_vat and screen_sanctions;
  • the clearparty-counterparty-check skill, which tells the agent when to run a check and how to act on the result.

Install

You need Claude Code 2.1.292 or later and a Clearparty API key.

claude plugin install clearparty --marketplace clearparty/clearparty-plugin

Claude Code asks for your API key during install and stores it as a sensitive setting.

Get a key

Sign in at https://app.clearparty.dev/account/keys and create a key. It starts with cp_live_ and is shown once.

What is sent, and where

When the agent calls a tool, the plugin sends the tool inputs (a company name, LEI, VAT number or registry number) and your API key to https://mcp.clearparty.dev/mcp, and nowhere else. Clearparty's server then checks VAT numbers in the EU's VIES service, and may send the company name and candidate matches to its language-model provider (Anthropic) to resolve an ambiguous match or, when you ask for an AI summary, to write it. The plugin itself contains no code that runs on your machine.

Other clients

Cursor, VS Code, claude mcp add and any Streamable HTTP client: see https://app.clearparty.dev/connect.

Terms

Clearparty provides data lookup, not compliance decisions. See the terms at https://app.clearparty.dev/terms.

This repository is generated from Clearparty's main repository. Please open issues here; pull requests cannot be merged.

Frequently asked questions

What is Clearparty?

KYB for AI agents: GLEIF entity, parent chain, sanctions and EU VAT checks. Data lookup only.

How do I install Clearparty?

It runs as a remote server. In Claude Code: claude mcp add --transport http clearparty 'https://mcp.clearparty.dev/mcp' --header 'Authorization: <Optional, instead of OAuth sign-in: Bearer followed by your Clearparty API key (cp_live_...). Create one at https://app.clearparty.dev/account/keys.>'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Clearparty need an API key?

Yes. It expects Authorization, which you set in its configuration.

Is Clearparty open source?

Yes. Its code is on GitHub under the MIT license.

Who maintains Clearparty?

It is published by clearparty. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.