SDD Vault for ChatGPT

com.sddvault/sdd-vault

Spec Driven Development store: constitution, specs, plans and tasks your agents read and write.

client:ChatGPT transport:streamable-http

Install SDD Vault in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://{organization}-mcp.sddvault.com/mcp

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