How to integrate Taggun MCP with Atomic Agent

Connect Atomic Agent to Taggun MCP. Extract vendor and total from this receipt image url, list all line items from uploaded invoice link, and more using natural language, with authentication handled for you.

Taggun logoTaggun
Api Key

Taggun is a real-time receipt OCR API for extracting structured data from receipt images. Instantly turn receipts into actionable data for expense management and automation.

14 Tools

Introduction

Atomic Agent is an open-source AI agent that runs on your machine and supports local models through llama.cpp. Connect it to 1,500+ apps through Composio, including Taggun.

This guide uses Atomic Agent's built-in Composio integration. You need Atomic Agent v0.5.6 or later, your own Composio API key, and a Taggun account. See the Atomic Agent documentation for installation instructions.

Also integrate Taggun with

How Atomic Agent connects to Taggun

Atomic Agent connects to Composio's Tool Router over Streamable HTTP MCP. It discovers the tools needed for your request, and Composio handles account authentication.

Execution and account-connection tools follow Atomic Agent's configured approval policy. Review any approval prompt before allowing an action on your connected account.

Connect Taggun to Atomic Agent

  1. Sign up or sign in to the Composio dashboard. Copy your API key.
  2. In Atomic Agent, open the Integrations tab and select Composio. Select API key, press e, paste the key, and press Enter. The tools become available immediately, without a restart.
  3. Ask Atomic Agent to do something in Taggun. It searches Composio for the right tool.
  4. On first use, open the sign-in link returned in the chat. Connect your Taggun account, then return to Atomic Agent to continue.

Headless setup

Add the following line to ~/.atomic-agent/.env, replacing YOUR_COMPOSIO_API_KEY with your key. Start Atomic Agent after saving the file.

bash
COMPOSIO_API_KEY=YOUR_COMPOSIO_API_KEY

What is the Taggun MCP server, and what's possible with it?

The Taggun MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Taggun account. It provides structured and secure access to real-time receipt OCR and merchant management, so your agent can scan receipts, extract detailed data, validate image URLs, and manage merchant records on your behalf.

  • Instant receipt data extraction: Have your agent process receipt or invoice images via public URLs to pull out structured purchase data quickly and accurately.
  • Detailed line item analysis: Use verbose extraction to get comprehensive data including line items, merchant info, and confidence metrics from receipt images or PDFs.
  • Automated merchant registry management: Export the full list of known merchants for audits or synchronize merchant data directly through your agent.
  • Receipt image URL validation: Let your agent check if a receipt image URL meets campaign and validation requirements before processing.
  • Generate merchant mock CSVs for testing: Easily create sample merchant CSV files to test or bulk import merchant data as part of your automation workflow.

Use Taggun from Atomic Agent

With your account connected, ask Atomic Agent to work with Taggun in natural language. You can connect more apps through the same Composio integration as you need them.

Visit the Atomic Agent website or inspect the Atomic Agent source code.

Troubleshooting

Why is my API key rejected?

Copy the key directly from the Composio dashboard. Atomic Agent requires ASCII characters because it sends the key in an HTTP header. Remove any extra characters introduced when copying.

Why are Composio tools unavailable after saving a key?

Check that you use Atomic Agent v0.5.6 or later and that Composio is enabled in your configuration. A "composio": { "enabled": false } setting disables the integration while keeping the saved key on disk.

Does Composio have a free plan?

The Hobby plan includes 100,000 tool calls per month. Composio-managed OAuth apps have a lower included allowance. See Composio pricing for the current limits that apply to your connection.

TOOLS

Supported Tools

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

Add Merchant Name

Tool to add a merchant name keyword to your account's model for predicting merchant names.

Export Known Merchants

Export the complete list of known merchants used for merchant name normalization in Taggun.

Export Known Product Codes

Export the complete list of known product codes used for product normalization and matching in Taggun.

Export Product Categories

Export a list of product categories and descriptions used for product categorization in CSV format.

Generate Merchants CSV

Generate a CSV file with mock merchant data for testing purposes.

Import Known Merchants

Import a list of merchant names and addresses to normalize and match in CSV or TSV format.

Import Known Product Codes

Tool to import a list of product codes in CSV or TSV format for normalization and matching.

Import Product Categories

Import a list of product categories and descriptions for product categorization.

Transcribe Receipt from Base64 Encoded Image

Extract structured data from a receipt or invoice using base64 encoded image data.

Transcribe Receipt Encoded Verbose

Tool to transcribe a receipt using base64 encoded image in JSON payload and return detailed results.

Transcribe Receipt File (Simple)

Tool to upload a receipt or invoice image file and extract basic data including merchant name, total amount, tax amount, and date.

Process Receipt via URL

Extract structured data from a receipt or invoice image using OCR.

URL Validation

Tool to extract and validate receipt data from a URL.

URL Verbose

Tool to process a receipt or invoice from a URL for detailed data extraction.

FAQ

Frequently asked questions

With a standalone Taggun MCP server, the agents and LLMs can only access a fixed set of Taggun tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Taggun and many other apps based on the task at hand, all through a single MCP endpoint.

Yes, you can. Atomic Agent 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 Taggun tools.

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

Start with Taggun.It takes 30 seconds.

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

Start building