01
Start here
Codex CLI MCP Setup: From Zero to Connected
Install your first MCP server, verify the connection and understand where Codex stores its configuration.
Independent Codex + MCP developer hub
Make Codex more capable with MCP.
Connect Codex CLI to the tools, data and services behind your workflow with practical setup guides, tested configurations and security-first advice.
2Server transports
6+Complete workflows
100%Copy-ready configs
Real developer workflow
codex · mcp setup
connected
terminalconfig.toml
~ codex mcp add context7 \
-- npx -y @upstash/context7-mcp
✓ Added MCP server 'context7'
~ codex mcp list
NAMETRANSPORTSTATUS
context7stdioready
figmahttpready
GitHub
Figma
Browser
Learn the complete workflow
01 Configure
→02 Connect
→03 Verify
→04 Secure
One protocolMany connected capabilities
Understand the connection
Learn how this resource works
What is Codex CLI MCP?
MCP is the standard layer that lets Codex discover and call external tools without making you manually copy information between every service and your terminal.
Codex is the client
Codex connects to configured servers and decides when a discovered tool is useful.
MCP servers provide tools
Servers expose structured capabilities, context and instructions through a consistent protocol.
You control the boundary
Authentication, tool allow lists and approval rules decide what a connection can do.
Featured learning paths
Start with a real workflow.
Every guide includes practical commands, clear permission boundaries and a downloadable starter configuration.
01
Start here
02
Popular integration
Connect GitHub MCP to Codex CLI
Give Codex structured access to issues, pull requests and repository workflows with a tightly scoped GitHub connection.
03
Design workflow
Figma MCP with Codex: Design-to-Code Workflow
Connect structured design context to Codex and turn selected Figma frames into more faithful implementation plans.
04
MCP server
Browser Automation with Playwright MCP
Let Codex inspect rendered pages, exercise interactions and collect browser evidence while keeping actions controlled.
05
Troubleshooting
Fix MCP Connection and Tool Discovery Errors
Diagnose startup failures, empty tool lists, authentication problems and configuration mistakes in the right order.
06
Security essential
Codex MCP Security: Least-Privilege Checklist
Build a safer MCP setup with narrow tool access, protected secrets and clear approval boundaries.
Complete resource library
Everything around the connection.
Move from your first server to a secure, dependable workflow without jumping between scattered tutorials.
MCP Servers
Understand local and remote MCP servers, transport choices and the capabilities each server exposes to Codex.
- STDIO servers
- Streamable HTTP
- Tool discovery
Integrations
Connect Codex CLI with the developer services your team already uses across design, code and operations.
- GitHub
- Figma
- Browser tools
Setup Tutorials
Follow practical walkthroughs for installation, config.toml, authentication, verification and safe first runs.
- Quick start
- config.toml
- Authentication
Troubleshooting
Resolve startup failures, missing tools, timeouts and authentication problems in a clear diagnostic order.
- Startup errors
- No tools found
- Auth failures
MCP Security
Use least privilege, safer credential handling and explicit approval boundaries for sensitive tools.
- Tool allow lists
- Secret handling
- Approval policy
Tools
Generate MCP configuration blocks, commands and reusable checklists for your own Codex setup.
- Config generator
- Command builder
- Downloads
The MCP workflow
From command to useful action.
Understand what happens at every stage before you connect a sensitive account or tool.
Configure a server
Add a local command or remote endpoint to your trusted Codex configuration.
Discover tools
Codex connects to the server and learns the structured tools it makes available.
Call the right tool
When your request matches a capability, Codex prepares the required tool arguments.
Review the result
You keep meaningful writes and sensitive actions behind an approval boundary.
Popular starting points
Browse MCP servers
Useful MCP servers for Codex workflows.
Choose servers by the problem they solve, not by how many capabilities they expose. A smaller, purposeful toolset is easier to understand and secure.
Before installing: verify the publisher, command or endpoint, authentication flow and exact tools the server exposes.
OpenAI Docs MCP
Search current OpenAI developer documentation
Context7
Retrieve current library and framework documentation
GitHub
Work with issues, pull requests and repository data
Figma
Bring structured design context into coding workflows
Playwright
Inspect and test rendered browser experiences
Chrome DevTools
Inspect pages, performance and browser state
Connected workflows
Bring live context closer to the code.
Use MCP when a coding task needs information or actions that do not live inside the local repository.
Free configuration tool
Generate a clean config.toml block.
Choose the transport, enter your server details and download a reusable Codex MCP configuration without writing the structure manually.
- Local STDIO or remote HTTP
- Approval mode controls
- Copy and download output
config.toml valid structure
[mcp_servers.my_server]
command = "npx"
args = ["-y", "@example/mcp-server"]
enabled = true
default_tools_approval_mode = "writes"
startup_timeout_sec = 20
tool_timeout_sec = 60 Copy Download
Security before convenience
Read the security checklist
Every MCP server is a trust decision.
MCP gives coding agents meaningful capability. That makes publisher verification, narrow credentials and clear approval rules part of the setup—not optional extras.
Verify the sourceKnow who publishes and maintains the server.
Scope credentialsGrant only the data and actions required.
Limit toolsExpose the smallest useful capability set.
Approve writesKeep sensitive actions clearly reviewable.
Clear answers
Codex CLI MCP FAQs
Short answers to the questions developers usually ask before connecting their first server.
Ask a questionIt describes using Model Context Protocol with Codex CLI so Codex can connect to external tools, services and context providers through a standard interface.
No. This is an independent educational resource. Official product documentation is linked throughout the website as the source of truth.
Depending on the server, MCP can expose developer documentation, GitHub data, design context, browser tools, observability data and other authorised services.
No. Some local STDIO servers need no authentication, while remote servers may use OAuth, bearer tokens or another provider-approved flow.
Use environment variables or a supported authentication flow. Avoid putting live secrets directly in committed config.toml files.
Use them as reviewed starters. Confirm the current provider endpoint, package name and permission requirements before connecting a sensitive service.