MCP servers · Neon · connector · GPT action
Connect ChatGPT to Neon
One line gives ChatGPT your Neon account as tools: 8 endpoints, projects, branches, called with your own connection. No key in the prompt, a receipt for every call, revoke ChatGPT's access alone any time.
Three steps
- Create a free 0n3 account and connect Neon. Paste a key or sign in; it lands in your vault, encrypted.
- Install 0n3 into ChatGPT. A custom connector in Developer mode, or an Action on a custom GPT from the OpenAPI spec.
- Ask ChatGPT: whoami. Then: "List projects in Neon".
Custom connector (needs Developer mode)
- Settings → Connectors (or Apps) → Advanced → Developer mode on
- Create → name 0n3 · MCP server URL https://0n3.app/mcp · Authentication: OAuth
- Finish the sign-in with your 0n account
- Enable the connector in a chat and ask: "whoami"
ChatGPT connectors cannot send a static header, so 0n3 signs you in through its OAuth door (dynamic client registration is on).
The line above carries a placeholder; 0n3.app/install mints a real key named for ChatGPT and fills it in.
What ChatGPT can then do in Neon
Projects · Manage projects8
List projects
GET /projectsCreate a project
POST /projectsGet a project
GET /projects/{project_id}Delete a project
DELETE /projects/{project_id}List branches
GET /projects/{project_id}/branchesCreate a branch
POST /projects/{project_id}/branchesList databases
GET /projects/{project_id}/branches/{branch_id}/databasesList endpoints
GET /projects/{project_id}/endpointsBranches · Manage branches0
Manage branches
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