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How to connect Neon MCP with ChatGPT

Connect ChatGPT to Neon MCP. Create a new neon project and database, deploy branch to staging and run migrations, and more using natural language, with authentication handled for you.

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Neon MCP is a managed platform for Neon projects, branches, and databases. Use it to streamline development workflows and manage databases with clarity.

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How to connect Neon MCP with ChatGPT

ChatGPT can take action across your apps and files, stay with a project for hours, and turn a goal into finished materials like sheets, slides, and docs, not just answers.

In this guide, I will explain the easiest and most secure way to connect your Neon account to ChatGPT via Composio Connect, so it can create projects, manage branches, provision databases, run migrations, and inspect logs through natural language commands without ever putting your account credentials at risk.

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Why use Composio over default connectors?

  • Apps with read and write access. Default connectors mostly can read your data. Composio's Neon integration lets ChatGPT take actions like creating drafts, sending updates, labeling records, and more.
  • 1,500+ SaaS toolkits out of the box. Composio gives you instant access to a vast catalog of pre-built connectors, from Gmail and Slack to Notion, Linear, and Salesforce.
  • One MCP server for every app. Connect any of your applications on demand through a single endpoint, rather than juggling a separate server for each app.
  • Smart, context-aware tool loading. Unlike traditional MCP servers that dump every available tool into the LLM context window, Composio searches for and loads only the tools relevant to the task at hand.
  • Cross-app automation. Chain actions across multiple apps in a single run - fetch a thread, summarize it in Notion, and post highlights to Slack without leaving the conversation.

Prerequisites

Note: Composio connects through OAuth. You will be asked to sign in and approve specific permissions. Review the permission screen carefully if you are using a work account.

Step-by-step: Connect Neon to ChatGPT

1. Install the Composio plugin

Click the button. ChatGPT opens the Composio plugin page. Click Install plugin.

Install in ChatGPT

Composio plugin page in ChatGPT with the Install plugin button

You can also find it inside ChatGPT: go to Settings, open Plugins, search the marketplace for Composio, and click Install plugin.

2. Authenticate

After you install, ChatGPT asks you to authenticate with Composio. Log in and click Allow access to authorize ChatGPT to use your Composio account.

Composio login and Allow access screen for ChatGPT

3. Start using Composio

That is it. Composio tools are now available in ChatGPT. Type @Composio followed by your request, for example @Composio find unread Neon messages and summarize them, and it will run the actions you authorize. On first use it asks you to authorize Neon.

Option 2: Add Composio as an MCP server

If you cannot use the plugin marketplace, add Composio as a custom MCP server instead.

1. Open the MCP settings

In ChatGPT, go to Settings and open the Plugins section. Inside the Plugins page, click the MCP tab.

ChatGPT settings showing the Plugins page with the MCP tab selected

2. Add the server

Click Add server. In the Name field enter Composio, for Type select Streamable HTTP, and in the URL field paste the Composio MCP server URL:

bash
https://connect.composio.dev/mcp
ChatGPT Add server dialog with the name Composio, type Streamable HTTP, and the Composio MCP URL

Then click Save. The Composio server now appears in your MCP plugins list.

ChatGPT Plugins page showing the Composio MCP server added to the list

3. Authenticate

Click Authenticate on the Composio entry, log in via Composio, and click Allow access. Composio tools are then available in ChatGPT the same way as with the plugin.

What you can do after connecting Neon

  • Create a new Neon project and database
  • Deploy branch to staging and run migrations
  • List all databases and their branches

Security + privacy notes (important)

  • Use least-privilege access: Only grant permissions you actually need.
  • Review OAuth permissions before approving: Make sure requested scopes match what you expect Composio and ChatGPT to do.
  • Keep write actions human-reviewed: For actions like sending messages, creating labels, or editing drafts, keep manual confirmation enabled.
  • Be careful with sensitive data: Avoid using this setup with highly sensitive information unless allowed by your personal, company, or client policies.
TOOLS

Supported Tools

Every Neon MCP action and event your agent gets out of the box.

Compare database schema

Use this tool to compare the schema of a database between two branches.

Complete database migration

Complete a database migration by applying changes to the main branch and cleaning up the temporary branch.

Complete query tuning

Complete a query tuning session by either applying the changes to the main branch or discarding them.

Configure neon auth

Configure Neon Auth for a branch by specifying an `operation`.

Create branch

Create a branch in a Neon project for isolated development or testing.

Create project

Create a new Neon project with a default database and branch.

Delete branch

Delete a branch and all its data.

Delete project

Delete a Neon project and all its data.

Describe branch

Get a tree view of all objects in a branch, including databases, schemas, tables, views, and functions.

Describe project

Get details and configuration of a specific Neon project.

Describe table schema

Get column definitions, data types, and constraints for a specific table.

Explain sql statement

Analyze the query execution plan for a SQL statement using EXPLAIN ANALYZE.

Fetch

Fetch detailed information about a specific organization, project, or branch using the ID returned by the `search` tool.

Get connection string

Get a PostgreSQL connection string for a Neon database.

Get database tables

List all tables in a Neon database.

Get doc resource

Fetches a specific Neon documentation page as markdown content.

Get neon auth config

Read full Neon Auth configuration for a branch.

Inspect database

Reach for this first when asked why a database is slow, large, bloated, or behind.

List branch computes

List compute endpoints for a project or branch.

List docs resources

Lists all available Neon documentation pages by fetching the index from https://neon.

List log fields

List the log fields whose values list_log_field_values can enumerate for a branch.

List log field values

List the distinct values of a log field (e.

List organizations

List all organizations the current user belongs to.

List projects

List Neon projects in your account.

List shared projects

List projects shared with the current user for collaboration.

List slow queries

Use this tool to list slow queries from your Neon database.

Prepare database migration

This tool performs database schema migrations by automatically generating and executing DDL statements.

Prepare query tuning

This tool helps developers improve PostgreSQL query performance for slow queries or DML statements by analyzing execution plans and suggesting optimizations.

Provision neon auth

Provisions Neon Auth for a Neon branch.

Provision neon data api

Provisions the Neon Data API for a Neon branch.

Query logs

Query logs emitted by your Neon serverless functions (and other services like storage).

Reset from parent

Reset a branch to its parent's current state, discarding all changes made on the branch.

Run sql

Use this tool to execute a single SQL statement against a Neon database.

Run sql transaction

Use this tool to execute a SQL transaction against a Neon database, should be used for multiple SQL statements.

Search

Search across all organizations, projects, and branches by keyword.

FRAMEWORKS

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FAQ

Frequently asked questions

With a standalone Neon MCP server, the agents and LLMs can only access a fixed set of Neon tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Neon and many other apps based on the task at hand, all through a single MCP endpoint.

Yes, you can. ChatGPT fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Neon tools.

Yes, absolutely. You can configure which Neon scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Neon data and credentials are handled as safely as possible.

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