Certisyn Verify for ChatGPT

com.certisyn/verify

Independent verification for agents. Free read-only tools and a signed receipt on every call.

client:ChatGPT transport:streamable-http tools:9

Install Certisyn Verify in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://app.certisyn.com/api/mcp

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