POSTFACT — Resolve Ambiguous Side Effects Before Retry for Claude Code

io.github.gsterlingpress/postfact

Resolve whether an uncertain side-effecting action completed before software retries it.

client:Claude Code transport:streamable-http tools:1

Install POSTFACT — Resolve Ambiguous Side Effects Before Retry in Claude Code

run in your project directory

claude mcp add --transport http postfact https://postfact-api-production.up.railway.app/mcp

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs