How to integrate Parsio MCP with Codex

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

Parsio logoParsio
Api Key

Parsio is a document parsing service that extracts structured data from emails, PDFs, and files. Use it to turn messy documents into clean, usable data without manual copy-paste.

10 Tools

Introduction

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

Also integrate Parsio 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 Parsio 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 Parsio MCP server, and what's possible with it?

The Parsio MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Parsio account. It provides structured and secure access to your mailboxes, documents, and extraction fields, so your agent can submit content for parsing, retrieve extracted data, manage documents, and update mailbox settings on your behalf.

  • Document parsing and extraction: Have your agent submit plain text, HTML, or files to a configured mailbox and return the extracted information.
  • Parsed document retrieval: Instruct your agent to find documents in a mailbox and retrieve their parsed fields for review or further work.
  • Mailbox and field discovery: Let the agent list your available mailboxes, inspect their parser settings, and view the extraction fields configured for each one.
  • Document reprocessing and cleanup: Direct your agent to reparse existing documents when extraction rules change or mark selected documents as skipped.
  • Mailbox configuration updates: Have your agent review and update settings for an existing Parsio mailbox.

Conclusion

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

Supported Tools

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

Get Document

Get one Parsio document and its mailbox-specific parsed JSON fields.

Get Mailbox

Get settings and parser configuration for one Parsio mailbox.

List Documents

List and filter documents in a Parsio mailbox, one page at a time.

List Mailboxes

List the Parsio mailboxes available to the connected account so their IDs can be used for parsing and configuration tasks.

List Table Fields

List the extraction fields configured for a Parsio mailbox.

Parse Text Document

Submit plain text or HTML to an existing template-based or GPT-powered Parsio mailbox, optionally waiting for the parsed result.

Reparse Document

Queue an existing Parsio document to be parsed again.

Skip Documents

Mark one or more documents in a Parsio mailbox as skipped.

Update Mailbox

Update one or more settings on an existing Parsio mailbox.

Upload Document

Upload one file to a Parsio mailbox for parsing, optionally waiting for the parsed result.

FAQ

Frequently asked questions

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

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

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