guardrail MCP servers

100xPercent/pop-pay

MCP server Claude CodeCodexCursor +2

The runtime security layer for AI agent commerce. Drop-in CLI + MCP server — blocks hallucinated purchases and keeps card credentials out of agent context. It only takes 0.1% of hallucination to drain 100% of your wallet. Runs locally from the pop-pay npm package. Needs 5 environment variables to run.

100xPercent/pop-pay-python

MCP server Claude CodeCodexCursor +2

The runtime security layer for AI agent commerce. Drop-in CLI + MCP server — blocks hallucinated purchases and keeps card credentials out of agent context. it only takes 0.1% of Hallucination to drain 100% of your wallet. Runs locally from the pop-pay Python package.