Sigistry Plugin & Skill Catalog for ChatGPT

com.sigistry/plugin-catalog

Search verified Claude Code plugins and skills; fetch portable SKILL.md sources. Read-only.

client:ChatGPT transport:streamable-http tools:8

Install Sigistry Plugin & Skill Catalog in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://sigistry.com/mcp

Custom connectors are a paid-plan feature and take a remote URL only. ChatGPT cannot run a packaged server locally. ChatGPT docs