# Pyxmark vendor checks

> Pyxmark checks a company or person before you pay them: sanctions lists, SEC filings and domain age, with sources. Hosted MCP server for AI agents, and a free web form for finance teams. Every result is timestamped with its sources, and due_diligence_report combines the checks into one report. Run by Trunnel & Co.

## Free use
- Web form on the homepage: https://pyxmark.com/
- MCP server: https://mcp.pyxmark.com/mcp (no sign-up or key, up to 25 checks a day)

## For AI agents
- Remote MCP server: https://mcp.pyxmark.com/mcp (Streamable HTTP, no auth). 6 read-only tools.
- [Setup for every client](https://pyxmark.com/setup): ChatGPT, Claude, Claude Code, Codex, Cursor, VS Code, Gemini CLI, Grok, Grok Build, Grok Bot, Cline and more
- [Install steps for AI agents](https://github.com/pyxmark/pyxmark/blob/main/llms-install.md): Claude, Claude Code, ChatGPT, Codex, Cursor, VS Code, Grok, Gemini CLI, Cline
- [MCP docs and tool reference](https://mcp.pyxmark.com/)
- [Server card](https://mcp.pyxmark.com/.well-known/mcp/server-card.json)
- Use it to vet a vendor or counterparty before paying them. Results are informational, not a compliance determination.

## Pages
- [Home](https://pyxmark.com/): run a free check, connect via MCP
- [OFAC sanctions MCP server](https://pyxmark.com/ofac-sanctions-mcp): hosted, no API key, OFAC plus UN, EU and UK lists
- [Pyxmark in Claude](https://pyxmark.com/claude): connect in claude.ai, Claude Desktop and Claude Code
- [Pyxmark in Cursor and VS Code](https://pyxmark.com/cursor): connect in Cursor and VS Code
- [Pyxmark in ChatGPT](https://pyxmark.com/chatgpt): connect in ChatGPT on the web, the ChatGPT desktop app and Codex
- [Pyxmark in Grok](https://pyxmark.com/grok): connect in grok.com, Grok Build and Grok Bot
- [Connect Pyxmark to your AI agent](https://pyxmark.com/setup): setup steps for every supported client
- [Check a new vendor against OFAC before you pay their invoice](https://pyxmark.com/check-vendor-before-paying): how to screen a new supplier before the first payment, on the web form or with one MCP call, and what hold, review and clear mean
- [Have Claude screen a supplier before you approve a payment](https://pyxmark.com/claude-supplier-check): a project instruction that makes Claude call due_diligence_report before any payment and act on the verdict
- [Check a vendor's email domain before you change their bank details](https://pyxmark.com/vendor-bank-change-check): what the domain check shows and can't show for a bank change request, and why to call a number on file
- [Methodology](https://pyxmark.com/methodology): sources, matching and limits
- [Privacy](https://pyxmark.com/privacy)
- [Terms](https://pyxmark.com/terms)

## Limits
Results are screening aids, not legal advice. Each result lists its sources and their dates.