How to integrate Textcortex MCP with Atomic Agent

Connect Atomic Agent to Textcortex MCP. Summarize this research article for me, generate a follow-up email to a client, and more using natural language, with authentication handled for you.

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Api Key

Textcortex is an AI-powered text generation platform that provides powerful language model APIs for developers. It enables rapid, high-quality content creation and paraphrasing at scale.

7 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 Textcortex.

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 Textcortex account. See the Atomic Agent documentation for installation instructions.

Also integrate Textcortex with

How Atomic Agent connects to Textcortex

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 Textcortex 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 Textcortex. It searches Composio for the right tool.
  4. On first use, open the sign-in link returned in the chat. Connect your Textcortex 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 Textcortex MCP server, and what's possible with it?

The Textcortex MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Textcortex account. It provides structured and secure access to advanced text generation and summarization capabilities, so your agent can perform actions like drafting emails, paraphrasing content, summarizing long texts, and personalizing communication on your behalf.

  • Automated email generation: Instantly draft personalized email subjects and bodies based on your prompts or specific instructions.
  • Concise text summarization: Have your agent quickly distill long articles, documents, or messages into clear, actionable summaries.
  • Content rephrasing and paraphrasing: Get alternative phrasings or rewording suggestions for existing text, tailored for clarity or tone.
  • Personalized content creation: Ask your agent to compose unique written content for outreach, marketing, or daily communication needs.

Use Textcortex from Atomic Agent

With your account connected, ask Atomic Agent to work with Textcortex 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 Textcortex action and event your agent gets out of the box.

Create Product Title

Tool to generate catchy product titles for listings.

Create Social Media Post

Tool to generate engaging social media posts for Twitter and LinkedIn.

Create Video Description

Tool to generate compelling video descriptions for YouTube or other platforms.

Generate Code

Tool to generate code for a given programming language.

Generate Email

Tool to generate email body and subject based on provided details.

Summarize Text

Tool to summarize text.

Translate Text

Tool to translate text into another language.

FAQ

Frequently asked questions

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

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

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