How to integrate Better proposals MCP with Codex

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

Better proposals logoBetter proposals
Api Key

Better Proposals is a web-based tool for crafting and sending professional proposals. It helps teams impress clients and close deals faster with slick, easy-to-use templates.

23 Tools

Introduction

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

Also integrate Better proposals 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 Better proposals 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.

Composio authentication page

(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.

  1. Click ⚙️ on the bottom left → MCP Servers → + Add servers → Streamable HTTP:
  2. Fill the header and Key fields with { "x-consumer-api-key" = "ck_*******" }.
  3. The Key is the Composio API key, that you can find on dashboard.composio.dev
  4. Click on Authenticate and authorize Codex to your Composio account and you're all set.
Codex App MCP setup
  1. 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 Better proposals MCP server, and what's possible with it?

The Better Proposals MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Better Proposals account. It provides structured and secure access to your proposals workspace, so your agent can perform actions like creating companies, generating proposals, listing templates, and managing document types on your behalf.

  • Automated proposal creation: Instruct your agent to generate new proposal covers or assemble entire proposals using customizable templates and dynamic content.
  • Company and client management: Let your agent create new companies, retrieve lists of existing clients, and keep your contacts organized for faster proposal delivery.
  • Template and document type selection: Ask your agent to fetch available templates and document types, helping you choose the right style and format every time.
  • Quote and currency handling: Have your agent list all available quotes and supported currencies, streamlining the pricing and invoicing process for your proposals.
  • Bulk data retrieval and reporting: Direct the agent to gather lists of all proposals, document types, or companies for easy review, reporting, or dashboarding.

Conclusion

You've successfully integrated Better proposals with Codex using Composio's MCP server. Now you can interact with Better proposals 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 Better proposals 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 Better proposals operations
  • Explore cross-app workflows by connecting more toolkits
  • Build automation scripts that leverage Codex's AI capabilities
TOOLS

Supported Tools

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

Create Company

Tool to create a new company.

Create Document Type

Tool to create a new document type.

Create Proposal Cover

Tool to create a new proposal cover design.

Get All Companies

Tool to retrieve a paginated list of all companies.

Get All Currencies

Tool to retrieve a paginated list of all currencies.

Get All Document Types

Tool to retrieve a paginated list of all document types.

Get All Proposals

Tool to retrieve a paginated list of all proposals.

Get All Quotes

Tool to retrieve a paginated list of all quotes.

Get All Templates

Tool to retrieve a paginated list of all templates.

Get Brand Settings

Tool to retrieve settings for the default brand.

Get Company

Tool to retrieve details of a specific company.

Get Currency

Tool to retrieve details of a specific currency.

Get New Proposals

Tool to retrieve all new proposals.

Get Opened Proposals

Tool to retrieve all opened proposals.

Get Paid Proposals

Tool to retrieve all paid proposals.

Get Proposal

Tool to retrieve details of a specific proposal by ID.

Get Proposal Count

Tool to retrieve the total count of proposals.

Get Quote

Tool to retrieve details of a specific quote.

Get Sent Proposals

Tool to retrieve all sent proposals.

Get Settings

Tool to retrieve current account settings.

Get Signed Proposals

Tool to retrieve all signed proposals.

Get Template Details

Tool to retrieve details of a specific template.

List Merge Tags

Tool to retrieve custom merge tags with pagination support.

FAQ

Frequently asked questions

With a standalone Better proposals MCP server, the agents and LLMs can only access a fixed set of Better proposals tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Better proposals 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 Better proposals tools.

Yes, absolutely. You can configure which Better proposals 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 Better proposals data and credentials are handled as safely as possible.

Start with Better proposals.It takes 30 seconds.

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

Start building