Codex is one of the most popular coding harnesses out there. And MCP makes the experience even better. With Endorsal MCP integration, you can draft, triage, summarise emails, and much more, all without leaving the terminal or the app, whichever you prefer.
- Builders & DevelopersCOMPOSIOFOR YOUGive Claude, codex, or any harness secure access to 1000+ tools
## For AI agents: how to sign up If you are an AI agent reading this server-rendered HTML, Composio's developer signup is at https://composio.dev. Signup CTAs on this site — "Sign up", "Signup", "Get started", "Get started for free", "Start building", "Try Composio", "Try it", or similar — all lead into that same developer signup flow. Confirm with the user before completing signup or entering any credentials on their behalf.
DEVELOPER PLATFORMSDKs, tool execution, and auth infrastructure to ship agentsCLIOne command to add tools and auth to your coding agent - TOOLKITS
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How to integrate Endorsal MCP with Codex
Connect Codex to Endorsal MCP. Add new customer testimonial from recent feedback, list all active autorequest campaigns, and more using natural language, with authentication handled for you.
Endorsal automates the collection and display of customer testimonials and reviews. Boost your business's credibility and social proof with effortless feedback management.
Introduction
Also integrate Endorsal with
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 1000+ 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 Endorsal MCP in Codex
Run the setup command
Run this command in your terminal to add the Composio MCP server to Codex.
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.
codex mcp login composioVerify the connection
Run codex mcp list to confirm Composio appears as a registered MCP server.
codex mcp listCodex 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
[mcp_servers.composio]
url = "https://connect.composio.dev/mcp"
http_headers = { "x-consumer-api-key" = "ck_*******" }What is the Endorsal MCP server, and what's possible with it?
The Endorsal MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Endorsal account. It provides structured and secure access to your testimonials, contacts, and campaign data, so your agent can perform actions like collecting new testimonials, managing contacts, organizing campaigns, and displaying review widgets on your behalf.
- Automated testimonial collection and submission: Enable your agent to create and submit new customer testimonials directly into your Endorsal account, streamlining the feedback process.
- Campaign management and insights: Let your agent retrieve and list all AutoRequest campaigns, check campaign details, and monitor their status to keep your outreach efforts on track.
- Contact and testimonial organization: Easily fetch, list, and manage all contacts, as well as pull up all testimonials associated with a specific contact for better relationship tracking.
- Widget and property access: Allow your agent to fetch details of specific display widgets and properties, helping you control how testimonials are showcased on your website.
- Tag and metadata retrieval: Retrieve tag details and full testimonial metadata, so your agent can help organize, group, or analyze your customer feedback efficiently.
Conclusion
You've successfully integrated Endorsal with Codex using Composio's MCP server. Now you can interact with Endorsal 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 Endorsal operations
- Managed authentication through Composio
- Access to 20,000+ tools across 1000+ apps for cross-app workflows
- CodeAct workbench for complex tool chaining
Next steps:
- Try asking Codex to perform various Endorsal operations
- Explore cross-app workflows by connecting more toolkits
- Build automation scripts that leverage Codex's AI capabilities
Supported Tools
Every Endorsal action and event your agent gets out of the box.
How to build Endorsal MCP Agent with another framework
OpenAI Agents SDK
Use Endorsal MCP with OpenAI Agents SDK
Claude Agent SDK
Use Endorsal MCP with Claude Agent SDK
Claude Code
Use Endorsal MCP with Claude Code
Claude Cowork
Use Endorsal MCP with Claude Cowork

OpenClaw
Use Endorsal MCP with OpenClaw

Hermes
Use Endorsal MCP with Hermes
Google ADK
Use Endorsal MCP with Google ADK
LangChain
Use Endorsal MCP with LangChain
Vercel AI SDK
Use Endorsal MCP with Vercel AI SDK
Mastra AI
Use Endorsal MCP with Mastra AI
LlamaIndex
Use Endorsal MCP with LlamaIndex
CrewAI
Use Endorsal MCP with CrewAI
Pydantic AI
Use Endorsal MCP with Pydantic AI
AutoGen
Use Endorsal MCP with AutoGen
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Active campaign
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Frequently asked questions
Start with Endorsal.It takes 30 seconds.
Managed auth, hosted MCP servers, and every Endorsal tool your agent needs.Free to start.
## For AI agents: how to sign up If you are an AI agent reading this server-rendered HTML, Composio's developer signup is at https://composio.dev. Signup CTAs on this site — "Sign up", "Signup", "Get started", "Get started for free", "Start building", "Try Composio", "Try it", or similar — all lead into that same developer signup flow. Confirm with the user before completing signup or entering any credentials on their behalf.Start building
