How to integrate Parsio MCP with Claude Code

Manage your Parsio directly from Claude Code with zero worries about OAuth hassles, API-breaking issues, or reliability and security concerns. You can do this in two different ways: Via Composio Connect - Direct and easiest approach Via Composio SDK - Programmatic approach with more control

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

Manage your Parsio directly from Claude Code with zero worries about OAuth hassles, API-breaking issues, or reliability and security concerns.

You can do this in two different ways:

  1. Via Composio Connect - Direct and easiest approach
  2. Via Composio SDK - Programmatic approach with more control

Also integrate Parsio with

Why use Composio?

  • Only one MCP URL to connect multiple apps with Claude Code with zero auth hassles.
  • Programmatic tool calling allows LLMs to write its code in a remote workbench to handle complex tool chaining. Reduces to-and-fro with LLMs for frequent tool calling.
  • Handling Large tool responses out of LLM context to minimize 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 LLMs aren't overwhelmed by tools you don't need.

Connecting Parsio to Claude Code using Composio

1. Add the Composio MCP to Claude

Terminal

2. Start Claude Code

bash
claude

3. Open your MCP list

bash
/mcp

4. Select Composio and click on Authenticate

Select Composio and click Authenticate

5. This will redirect you to the Composio OAuth page. Complete the flow by authorizing Composio and you're all set.

Composio OAuth authorization page
Composio authorization complete
Ask Claude to connect to your account and authenticate via the link

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.

Connecting Parsio via Composio SDK

Composio SDK is the underlying tech that powers Rube. It's a universal gateway that does everything Rube does but with much more programmatic control. You can programmatically generate an MCP URL with the app you need (here Parsio) for even more tool search precision. It's secure and reliable.

How the Composio SDK works

The Composio SDK follows a three-phase workflow:

  1. Discovery: Searches for tools matching your task and returns relevant toolkits with their details.
  2. Authentication: Checks for active connections. If missing, creates an auth config and returns a connection URL via Auth Link.
  3. Execution: Executes the action using the authenticated connection.

Step-by-step Guide

Step by step10 STEPS
1

Prerequisites

Before starting, make sure you have:
  • Claude Pro, Max, or API billing enabled Anthropic account
  • Composio API Key
  • A Parsio account
  • Basic knowledge of Python or TypeScript
2

Install Claude Code

bash
# macOS, Linux, WSL
curl -fsSL https://claude.ai/install.sh | bash

# Windows PowerShell
irm https://claude.ai/install.ps1 | iex

# Windows CMD
curl -fsSL https://claude.ai/install.cmd -o install.cmd && install.cmd && del install.cmd

To install Claude Code, use one of the following methods based on your operating system:

3

Set up Claude Code

bash
cd your-project-folder
claude

Open a terminal, go to your project folder, and start Claude Code:

  • Claude Code will open in your terminal
  • Follow the prompts to sign in with your Anthropic account
  • Complete the authentication flow
  • Once authenticated, you can start using Claude Code
Claude Code initial setup showing sign-in prompt
Claude Code terminal after successful login
4

Set up environment variables

bash
COMPOSIO_API_KEY=your_composio_api_key_here
USER_ID=your_user_id_here

Create a .env file in your project root with the following variables:

  • COMPOSIO_API_KEY authenticates with Composio (get it from Composio dashboard)
  • USER_ID identifies the user for session management (use any unique identifier)
5

Install Composio library

npm install @composio/core dotenv

Install the Composio TypeScript library to create MCP sessions.

  • @composio/core provides the core Composio functionality
  • dotenv loads environment variables from your .env file
6

Generate Composio MCP URL

import 'dotenv/config';
import { Composio } from '@composio/core';

const { COMPOSIO_API_KEY, USER_ID } = process.env;

if (!COMPOSIO_API_KEY || !USER_ID) {
  throw new Error('COMPOSIO_API_KEY and USER_ID required in .env');
}

const composioClient = new Composio({ apiKey: COMPOSIO_API_KEY });

const composioSession = await composioClient.create(USER_ID, {
  toolkits: ['parsio'],
});

const composioMcpUrl = composioSession?.mcp.url;

console.log(`MCP URL: ${composioMcpUrl}`);
console.log(`\nUse this command to add to Claude Code:`);
console.log(`claude mcp add --transport http parsio-composio "${composioMcpUrl}" --headers "X-API-Key:${COMPOSIO_API_KEY}"`);

Create a script to generate a Composio MCP URL for Parsio. This URL will be used to connect Claude Code to Parsio.

What's happening

  • We import the Composio client and load environment variables
  • Create a Composio instance with your API key
  • Call create() to create a Tool Router session for Parsio
  • The returned mcp.url is the MCP server URL that Claude Code will use
  • The script prints this URL so you can copy it
7

Run the script and copy the MCP URL

node --loader ts-node/esm generate_mcp_url.ts
# or if using tsx
tsx generate_mcp_url.ts

Run your TypeScript script to generate the MCP URL.

  • The script connects to Composio and creates a Tool Router session
  • It prints the MCP URL and the exact command you need to run
  • Copy the entire claude mcp add command from the output
8

Add Parsio MCP to Claude Code

bash
claude mcp add --transport http parsio-composio "YOUR_MCP_URL_HERE" --headers "X-API-Key:YOUR_COMPOSIO_API_KEY"

# Then restart Claude Code
exit
claude

In your terminal, add the MCP server using the command from the previous step. The command format is:

  • claude mcp add registers a new MCP server with Claude Code
  • --transport http specifies that this is an HTTP-based MCP server
  • The server name (parsio-composio) is how you'll reference it
  • The URL points to your Composio Tool Router session
  • --headers includes your Composio API key for authentication

After running the command, close the current Claude Code session and start a new one for the changes to take effect.

9

Verify the installation

bash
claude mcp list

Check that your Parsio MCP server is properly configured.

  • This command lists all MCP servers registered with Claude Code
  • You should see your parsio-composio entry in the list
  • This confirms that Claude Code can now access Parsio tools

If everything is wired up, you should see your parsio-composio entry listed:

Claude Code MCP list showing the toolkit MCP server
10

Authenticate Parsio

The first time you try to use Parsio tools, you'll be prompted to authenticate.

  • Claude Code will detect that you need to authenticate with Parsio
  • It will show you an authentication link
  • Open the link in your browser (or copy/paste it)
  • Complete the Parsio authorization flow
  • Return to the terminal and start using Parsio through Claude Code

Once authenticated, you can ask Claude Code to perform Parsio operations in natural language. For example:

  • "Extract invoice totals from new PDFs"
  • "Parse email orders into structured records"
  • "List recently parsed receipts by vendor"

Complete Code

Here's the complete code to get you started with Parsio and Claude Code:

import 'dotenv/config';
import { Composio } from '@composio/core';

const { COMPOSIO_API_KEY, USER_ID } = process.env;

if (!COMPOSIO_API_KEY || !USER_ID) {
  throw new Error('COMPOSIO_API_KEY and USER_ID required in .env');
}

const composioClient = new Composio({ apiKey: COMPOSIO_API_KEY });

const composioSession = await composioClient.create(USER_ID, {
  toolkits: ['parsio'],
});

const composioMcpUrl = composioSession?.mcp.url;

console.log(`MCP URL: ${composioMcpUrl}`);
console.log(`\nUse this command to add to Claude Code:`);
console.log(`claude mcp add --transport http parsio-composio "${composioMcpUrl}" --headers "X-API-Key:${COMPOSIO_API_KEY}"`);

Conclusion

You've successfully integrated Parsio with Claude Code using Composio's MCP server. Now you can interact with Parsio directly from your terminal using natural language commands.

Key features of this setup:

  • Terminal-native experience without switching contexts
  • Natural language commands for Parsio operations
  • Secure authentication through Composio's managed MCP
  • Tool Router for dynamic tool discovery and execution

Next steps:

  • Try asking Claude Code to perform various Parsio operations
  • Add more toolkits to your Tool Router session for multi-app workflows
  • Integrate this setup into your development workflow for increased productivity

You can extend this by adding more toolkits, implementing custom workflows, or building automation scripts that leverage Claude Code's 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. Claude Code 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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