How to integrate Neon MCP with Codex

Connect Codex to Neon MCP. Create a new neon project with autoscaling, add a developer's email permission to a project, and more using natural language, with authentication handled for you.

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Neon

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Neon is a serverless Postgres platform for building scalable apps faster. Its serverless architecture helps you launch, scale, and manage Postgres with zero overhead.

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Introduction

Codex is one of the most popular coding harnesses out there. And MCP makes the experience even better. With Neon MCP integration, you can draft, triage, summarise emails, and much more, all without leaving the terminal or the app, whichever you prefer.

Also integrate Neon with

Claude Code Claude Cowork OpenAI Agents SDK Claude Agent SDK Muse OpenClaw Hermes Atomic Agent Google ADK LangChain Vercel AI SDK Mastra AI LlamaIndex CrewAI Pydantic AI AutoGen

Why use Composio?

Apart from a managed and hosted MCP server, you will get:

CodeAct: A dedicated workbench that allows GPT to write its code to handle complex tool chaining. Reduces to-and-fro with LLMs for frequent tool calling.
Large tool responses: Handle them to minimise context rot.
Dynamic just-in-time access to 20,000 tools across 1500+ other Apps for cross-app workflows. It loads the tools you need, so GPTs aren't overwhelmed by tools you don't need.

How to install Neon MCP in Codex

Run the setup command

Run this command in your terminal to add the Composio MCP server to Codex.

Terminal

It will initiate the authentication in a browser window, authorize Codex to access your Composio account.

(Optional) Authenticate with OAuth

To authenticate manually, run the login command to open a browser window and authorize Codex to access your Composio account.

bash

codex mcp login composio

Verify the connection

Run codex mcp list to confirm Composio appears as a registered MCP server.

bash

codex mcp list

Codex App

Codex App follows the same approach as VS Code.

Click ⚙️ on the bottom left → MCP Servers → + Add servers → Streamable HTTP:
Fill the header and Key fields with { "x-consumer-api-key" = "ck_*******" }.
The Key is the Composio API key, that you can find on dashboard.composio.dev
Click on Authenticate and authorize Codex to your Composio account and you're all set.

Restart and verify if it's there in .codex/config.toml

bash

[mcp_servers.composio]
url = "https://connect.composio.dev/mcp"
http_headers = { "x-consumer-api-key" = "ck_*******" }

What is the Neon MCP server, and what's possible with it?

The Neon MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Neon account. It provides structured and secure access to your serverless Postgres projects, branches, databases, authentication, and network settings, so your agent can inspect projects, create branches, manage databases, protect access, and maintain credentials on your behalf.

Project creation and administration: Have your agent review project details, create projects with quotas and settings, transfer projects, or remove projects you no longer need.
Database branching and recovery: Let the agent create or delete project branches, count existing branches, build anonymized branches, and manage snapshots for safer development and testing.
Database and role management: Direct your agent to create databases within branches, remove obsolete databases, and add or delete PostgreSQL roles.
Authentication and user control: Instruct your agent to enable or disable Neon Auth, create or delete users, manage approved domains and OAuth providers, and configure keys for token authentication.
Private access and credential management: Have your agent manage private AWS network access rules and create or revoke personal and organization API keys.

Conclusion

You've successfully integrated Neon with Codex using Composio's MCP server. Now you can interact with Neon directly from your terminal, VS Code, or the Codex App using natural language commands.

Key benefits of this setup:

Seamless integration across CLI, VS Code, and standalone app
Natural language commands for Neon operations
Managed authentication through Composio
Access to 20,000+ tools across 1500+ apps for cross-app workflows
CodeAct workbench for complex tool chaining

Next steps:

Try asking Codex to perform various Neon operations
Explore cross-app workflows by connecting more toolkits
Build automation scripts that leverage Codex's AI capabilities

TOOLS

Supported Tools

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

Accept project transfer request

Tool to accept a transfer request for a Neon project.

Access project details by id

Retrieves detailed information about a specific Neon serverless Postgres project.

Add new jwks to project endpoint

Adds a new JSON Web Key Set (JWKS) URL to a Neon project for JWT-based authentication.

Add project email permission

Adds permissions for a specified email address to a particular project within the Neon B2B SaaS integration platform.

Add role to branch

Creates a new PostgreSQL role within a specific branch of a Neon project.

Count project branches

Tool to get the total number of branches in a Neon project.

Create API Key for Organization

Creates a new API key for the specified organization in Neon.

Create Auth Provider SDK Keys

Tool to generate SDK or API keys for authentication providers.

Create auth user

Tool to create a new user in Neon Auth for a specific project branch.

Create branch database

Creates a new database within a specified project and branch in the Neon platform.

Enable Neon Auth for branch

Tool to enable Neon Auth integration for a branch.

Create Neon Data API

Creates a new instance of Neon Data API in the specified branch.

Create branch snapshot

Creates a snapshot from the specified branch at a specific point in time.

Create compute endpoint

Creates a new compute endpoint for a specified branch within a Neon project.

Create New API Key

Creates a new personal API key for the authenticated Neon user account.

Create new project branch

Creates a new branch in a Neon project.

Create anonymized branch

Creates a new branch with anonymized data using PostgreSQL Anonymizer for static masking.

Create project transfer request

Tool to create a transfer request for a Neon project.

Create project with quota and settings

Creates a new Neon project with specified configuration settings.

Set VPC endpoint restriction

Sets or updates a VPC endpoint restriction for a Neon project.

Assign or Update VPC Endpoint

Assigns an AWS VPC endpoint to a Neon organization for Private Networking, or updates the label of an existing VPC endpoint assignment.

Delete api key by id

Deletes a specific API key from the Neon platform.

Delete auth domains

Deletes domains from the redirect_uri whitelist for a specific branch's authentication configuration.

Delete OAuth provider

Deletes an OAuth provider configuration from a specific branch in a Neon project.

Delete auth user

Deletes an authentication user from a specified branch within a Neon project.

Delete branch data API

Deletes the Neon Data API for a specified branch and database.

Delete database from branch

Deletes a specific database from a designated branch within a project in the Neon platform.

Delete organization api key

Deletes a specific API key associated with an organization in the Neon platform.

Delete organization member

Removes a specific member from a Neon organization.

Delete project branch by id

Deletes a specific branch within a project in the Neon B2B SaaS integration platform.

Delete project branch role

Deletes a PostgreSQL role from a specific branch within a Neon project.

Delete project by id

Permanently deletes a Neon PostgreSQL project and all its associated resources.

Delete project endpoint

Deletes a specific endpoint within a Neon project.

Delete project jwks by id

Deletes a specific JSON Web Key Set (JWKS) associated with a given project in the Neon B2B SaaS integration platform.

Delete project permission

Deletes a specific permission associated with a project in the Neon B2B SaaS integration platform.

Delete project snapshot

Deletes a specific snapshot for a project in Neon.

Delete vpc endpoint by ids

Permanently deletes a VPC endpoint from a Neon organization in a specified AWS region.

Delete vpc endpoint by project id

Deletes a specific VPC endpoint within a designated project in the Neon platform.

Disable branches auth

Tool to disable Neon Auth for a specific branch in a Neon project.

Fetch database for branch

Retrieves a list of databases associated with a specific project and branch in the Neon platform.

Fetch organization members by id

Retrieves a list of all members associated with a specific organization in the Neon B2B SaaS integration platform.

Fetch vpcendpoint details by id

Retrieves the current state and configuration details of a specific VPC endpoint assigned to a Neon organization.

Finalize branch restore

Finalizes the restore operation for a branch created from a snapshot.

Get auth

Retrieves authentication information about the current API request credentials.

Get auth allow localhost

Retrieves the allow localhost configuration for a specific branch in a Neon project.

Get auth email provider

Retrieves the email provider configuration for Neon Auth on a specific branch.

Get available preload libraries

Retrieves the list of available shared preload libraries for a Neon project.

Get branches anonymized status

Retrieves the current status of an anonymized branch, including its state and progress information.

Get branches backup schedule

Retrieves the backup schedule configuration for a specified branch within a Neon project.

Get Neon Data API for branch

Retrieves the Neon Data API information for a specific branch and database.

Get branches for project

Retrieves a list of branches associated with a specific project in the Neon B2B SaaS integration platform.

Get branches masking rules

Retrieves the masking rules for the specified anonymized branch.

Get branch roles for project

Retrieves the roles associated with a specific branch within a project in the Neon B2B SaaS integration platform.

Get consumption history projects

Retrieves consumption history for projects within a Neon organization.

Get current user information

Retrieves the profile information for the currently authenticated user.

Get organization api keys

Retrieves a list of all API keys associated with a specific organization in the Neon B2B SaaS integration platform.

Get project branches

Retrieves detailed information about a specific branch within a Neon project.

Get project branch role

Retrieves detailed information about a specific role within a particular branch of a Neon project.

Get project branch schema comparison

Compares the database schema of a branch with another branch's schema in a Neon project.

Get project connection uri

Retrieves the connection URI for a specified project within the Neon B2B SaaS integration platform.

Get project endpoint information

Retrieves a list of all compute endpoints associated with a specific Neon project.

Get project operation by id

Retrieves detailed information about a specific operation within a Neon serverless PostgreSQL project.

Get schema for project branch

Retrieves the PostgreSQL database schema (DDL) for a specific database on a branch within a Neon project.

Get user organizations

Retrieves a list of organizations associated with the currently authenticated user in the Neon platform.

Get vpc region endpoints

Retrieves a list of VPC endpoints for a specified organization within a particular AWS region.

List api keys

Retrieves a list of API keys associated with the authenticated user's Neon account.

List auth domains

Lists the domains in the redirect_uri whitelist for the specified project and branch.

List Auth OAuth Providers

Retrieves the OAuth providers configured for Neon Auth on a specific branch.

List project snapshots

Tool to list all snapshots for a specified Neon project.

List shared projects

Retrieves a list of Neon Postgres projects shared with your account.

List VPC endpoints for organization

Tool to retrieve the list of VPC endpoints for a specified Neon organization across all regions.

Modify branch details in project

Updates the details of a specific branch within a project in the Neon platform.

Patch branch database information

Updates the properties of a specific database within a project branch in the Neon platform.

Reset role password for branch

Resets the password for a PostgreSQL role on a specific Neon branch and generates a new password.

Restart project endpoint

Restarts a Neon compute endpoint (Postgres instance) within a project.

Restore project branch

This endpoint restores a branch to a specific state or point in time.

Restore snapshot to new branch

Tool to restore a Neon snapshot to a new branch.

Retrieve account consumption history

Retrieves the consumption history for a specified account within the Neon platform.

Retrieve all regions

Retrieves a list of available geographic regions supported by the Neon B2B SaaS integration platform.

Retrieve branch database details

Retrieves detailed information about a specific database within a Neon project and branch.

Retrieve branch endpoints

Retrieves all compute endpoints associated with a specific branch in a Neon project.

Retrieve jwks for project

Retrieves the JSON Web Key Set (JWKS) for a specified project.

Retrieve organization by id

Retrieves detailed information about a specific organization within the Neon platform.

Retrieve organization invitations

Retrieves a list of all pending invitations for a specified organization.

Retrieve organization member info

Retrieves detailed information about a specific member within an organization in the Neon B2B SaaS integration platform.

Retrieve project endpoint details

Retrieves detailed information about a specific compute endpoint within a Neon serverless PostgreSQL project.

Retrieve project operations

Retrieves a list of operations associated with a specific project in the Neon B2B SaaS integration platform.

Retrieve project permissions

Retrieves the current permissions settings for a specific project within the Neon B2B SaaS integration platform.

Retrieve projects list

Retrieves a list of all Neon projects associated with the authenticated user's account.

Retrieve vpc endpoints for project

Retrieves a list of VPC (Virtual Private Cloud) endpoints associated with a specific project in the Neon B2B SaaS integration platform.

Reveal role password in branch

Reveals the password for a specific role within a branch of a Neon project.

Send auth test email

Tool to send a test email using specified SMTP configuration for Neon Auth.

Send organization invitations

Creates and sends invitations to join an organization in the Neon B2B SaaS integration platform.

Set branch as default

Sets a specified branch as the default branch for a given project in Neon.

Start branch anonymization

Starts the anonymization process for an anonymized branch that is in the initialized, error, or anonymized state.

Start endpoint for project

Starts a suspended or idle compute endpoint for a Neon PostgreSQL project.

Suspend project endpoint by id

Suspends a specific endpoint within a project in the Neon B2B SaaS integration platform.

Transfer projects between organizations

Transfers selected projects from one organization to another organization.

Transfer user projects to organization

Transfers multiple projects from the authenticated user's personal account to a specified organization within the Neon B2B SaaS integration platform.

Update auth allow localhost

Updates the allow localhost configuration for a specific branch in a Neon project.

Update branch auth email provider

Updates the email provider configuration for a specific branch's authentication system.

Update branches data API

Updates the Neon Data API configuration for the specified branch.

Update branches masking rules

Updates the masking rules for the specified anonymized branch.

Update organization member role

Updates the role of a specific member within an organization in the Neon B2B SaaS integration platform.

Update project compute endpoint settings

Updates the configuration of a specific compute endpoint within a Neon project.

Update project settings by id

Updates the configuration and settings of a specific Neon project.

Update project snapshot

Tool to update the name of a specific snapshot in a Neon project.

FRAMEWORKS

How to build Neon MCP Agent with another framework

Claude Code

Use Neon MCP with Claude Code

Claude Cowork

Use Neon MCP with Claude Cowork

OpenAI Agents SDK

Use Neon MCP with OpenAI Agents SDK

Claude Agent SDK

Use Neon MCP with Claude Agent SDK

Muse

Use Neon MCP with Muse

OpenClaw

Use Neon MCP with OpenClaw

Hermes

Use Neon MCP with Hermes

Atomic Agent

Use Neon MCP with Atomic Agent

Google ADK

Use Neon MCP with Google ADK

LangChain

Use Neon MCP with LangChain

Vercel AI SDK

Use Neon MCP with Vercel AI SDK

Mastra AI

Use Neon MCP with Mastra AI

LlamaIndex

Use Neon MCP with LlamaIndex

CrewAI

Use Neon MCP with CrewAI

Pydantic AI

Use Neon MCP with Pydantic AI

AutoGen

Use Neon MCP with AutoGen

MORE TOOLKITS

Explore Other Toolkits

Toolkit marketplace

Supabase

Oauth2Api Key

Supabase is an open-source backend platform offering scalable Postgres databases, authentication, storage, and real-time APIs. It lets developers build modern apps without managing infrastructure.

Codeinterpreter

No Auth

Codeinterpreter is a Python-based coding environment with built-in data analysis and visualization. It lets you instantly run scripts, plot results, and prototype solutions inside supported platforms.

GitHub

Oauth2

GitHub is a code hosting platform for version control and collaborative software development. It streamlines project management, code review, and team workflows in one place.

1password

Api Key

1Password is a password manager and digital vault for storing logins, secrets, notes, and secure documents. It helps individuals and teams protect credentials, share access safely, and reduce password risk.

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. Codex 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.

Start with Neon.It takes 30 seconds.

Managed auth, hosted MCP servers, and every Neon tool your agent needs.Free to start.

Start building

How to integrate Neon MCP with Codex

Connect Neon without auth hassles

Introduction

Also integrate Neon with

Why use Composio?

How to install Neon MCP in Codex

Run the setup command

(Optional) Authenticate with OAuth

Verify the connection

Codex App

What is the Neon MCP server, and what's possible with it?

Conclusion

Supported Tools

How to build Neon MCP Agent with another framework

Claude Code

Claude Cowork

OpenAI Agents SDK

Claude Agent SDK

Muse

OpenClaw

Hermes

Atomic Agent

Google ADK

LangChain

Vercel AI SDK

Mastra AI

LlamaIndex

CrewAI

Pydantic AI

AutoGen

Explore Other Toolkits

Supabase

Codeinterpreter

GitHub

1password

Frequently asked questions

What are the differences in Tool Router MCP and Neon MCP?+

Can I use Tool Router MCP with Codex?+

Can I manage the permissions and scopes for Neon while using Tool Router?+

How safe is my data with Composio Tool Router?+

Start with Neon.It takes 30 seconds.