# How to integrate Fathom MCP with Atomic Agent ```json { "title": "How to integrate Fathom MCP with Atomic Agent", "toolkit": "Fathom", "toolkit_slug": "fathom", "framework": "Atomic Agent", "framework_slug": "atomic-agent", "url": "https://composio.dev/toolkits/fathom/framework/atomic-agent", "markdown_url": "https://composio.dev/toolkits/fathom/framework/atomic-agent.md", "updated_at": "2026-09-18T06:05:41.553Z" } ``` ## 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 Fathom. 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 Fathom account. See the [Atomic Agent documentation](https://atomicagent.io/docs/?cta_placement=atomic-agent-docs) for installation instructions. ## Also integrate Fathom with - [ChatGPT](https://composio.dev/toolkits/fathom/framework/chatgpt) - [Antigravity](https://composio.dev/toolkits/fathom/framework/antigravity) - [OpenAI Agents SDK](https://composio.dev/toolkits/fathom/framework/open-ai-agents-sdk) - [Claude Agent SDK](https://composio.dev/toolkits/fathom/framework/claude-agents-sdk) - [Claude Code](https://composio.dev/toolkits/fathom/framework/claude-code) - [Claude Cowork](https://composio.dev/toolkits/fathom/framework/claude-cowork) - [Grok Bot](https://composio.dev/toolkits/fathom/framework/grok-bot) - [Codex](https://composio.dev/toolkits/fathom/framework/codex) - [Grok Build](https://composio.dev/toolkits/fathom/framework/grok-build) - [Cursor](https://composio.dev/toolkits/fathom/framework/cursor) - [VS Code](https://composio.dev/toolkits/fathom/framework/vscode) - [OpenCode](https://composio.dev/toolkits/fathom/framework/opencode) - [OpenClaw](https://composio.dev/toolkits/fathom/framework/openclaw) - [Hermes](https://composio.dev/toolkits/fathom/framework/hermes-agent) - [Google ADK](https://composio.dev/toolkits/fathom/framework/google-adk) - [LangChain](https://composio.dev/toolkits/fathom/framework/langchain) - [Vercel AI SDK](https://composio.dev/toolkits/fathom/framework/ai-sdk) - [Mastra AI](https://composio.dev/toolkits/fathom/framework/mastra-ai) - [LlamaIndex](https://composio.dev/toolkits/fathom/framework/llama-index) - [CrewAI](https://composio.dev/toolkits/fathom/framework/crew-ai) - [Pydantic AI](https://composio.dev/toolkits/fathom/framework/pydantic-ai) - [AutoGen](https://composio.dev/toolkits/fathom/framework/autogen) ## TL;DR ### How Atomic Agent connects to Fathom 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 Fathom to Atomic Agent ### Connect Fathom to Atomic Agent - Sign up or sign in to the [Composio dashboard](https://dashboard.composio.dev/?cta_placement=atomic-agent-api-key). Copy your API key. - 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. - Ask Atomic Agent to do something in Fathom. It searches Composio for the right tool. - On first use, open the sign-in link returned in the chat. Connect your Fathom 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 Fathom MCP server, and what's possible with it? The Fathom MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Fathom account. It provides structured and secure access so your agent can perform Fathom operations on your behalf. ## Supported Tools None listed. ## Supported Triggers None listed. ## 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](/pricing) for the current limits that apply to your connection. ## Complete Code None listed. ## Conclusion ### Use Fathom from Atomic Agent With your account connected, ask Atomic Agent to work with Fathom in natural language. You can connect more apps through the same Composio integration as you need them. Visit the [Atomic Agent website](https://atomicagent.io/?cta_placement=atomic-agent-site) or inspect the [Atomic Agent source code](https://github.com/AtomicBot-ai/atomic-agent?cta_placement=atomic-agent-repo). ## How to build Fathom MCP Agent with another framework - [ChatGPT](https://composio.dev/toolkits/fathom/framework/chatgpt) - [Antigravity](https://composio.dev/toolkits/fathom/framework/antigravity) - [OpenAI Agents SDK](https://composio.dev/toolkits/fathom/framework/open-ai-agents-sdk) - [Claude Agent SDK](https://composio.dev/toolkits/fathom/framework/claude-agents-sdk) - [Claude Code](https://composio.dev/toolkits/fathom/framework/claude-code) - [Claude Cowork](https://composio.dev/toolkits/fathom/framework/claude-cowork) - [Grok Bot](https://composio.dev/toolkits/fathom/framework/grok-bot) - [Codex](https://composio.dev/toolkits/fathom/framework/codex) - [Grok Build](https://composio.dev/toolkits/fathom/framework/grok-build) - [Cursor](https://composio.dev/toolkits/fathom/framework/cursor) - [VS Code](https://composio.dev/toolkits/fathom/framework/vscode) - [OpenCode](https://composio.dev/toolkits/fathom/framework/opencode) - [OpenClaw](https://composio.dev/toolkits/fathom/framework/openclaw) - [Hermes](https://composio.dev/toolkits/fathom/framework/hermes-agent) - [Google ADK](https://composio.dev/toolkits/fathom/framework/google-adk) - [LangChain](https://composio.dev/toolkits/fathom/framework/langchain) - [Vercel AI SDK](https://composio.dev/toolkits/fathom/framework/ai-sdk) - [Mastra AI](https://composio.dev/toolkits/fathom/framework/mastra-ai) - [LlamaIndex](https://composio.dev/toolkits/fathom/framework/llama-index) - [CrewAI](https://composio.dev/toolkits/fathom/framework/crew-ai) - [Pydantic AI](https://composio.dev/toolkits/fathom/framework/pydantic-ai) - [AutoGen](https://composio.dev/toolkits/fathom/framework/autogen) ## Related Toolkits - [Google Sheets](https://composio.dev/toolkits/googlesheets) - Google Sheets is a cloud-based spreadsheet tool for real-time collaboration and data analysis. It lets teams work together from anywhere, updating information instantly. - [Notion](https://composio.dev/toolkits/notion) - Notion is a collaborative workspace for notes, docs, wikis, and tasks. It streamlines team knowledge, project tracking, and workflow customization in one place. - [Airtable](https://composio.dev/toolkits/airtable) - Airtable combines the flexibility of spreadsheets with the power of a database for easy project and data management. Teams use Airtable to organize, track, and collaborate with custom views and automations. - [Asana](https://composio.dev/toolkits/asana) - Asana is a collaborative work management platform for teams to organize and track projects. It streamlines teamwork, boosts productivity, and keeps everyone aligned on goals. - [Google Tasks](https://composio.dev/toolkits/googletasks) - Google Tasks is a to-do list and task management tool integrated into Gmail and Google Calendar. It helps you organize, track, and complete tasks across your Google ecosystem. - [Linear](https://composio.dev/toolkits/linear) - Linear is a modern issue tracking and project planning tool for fast-moving teams. It helps streamline workflows, organize projects, and boost productivity. - [Jira](https://composio.dev/toolkits/jira) - Jira is Atlassian’s platform for bug tracking, issue tracking, and agile project management. It helps teams organize work, prioritize tasks, and deliver projects efficiently. - [Clickup](https://composio.dev/toolkits/clickup) - ClickUp is an all-in-one productivity platform for managing tasks, docs, goals, and team collaboration. It streamlines project workflows so teams can work smarter and stay organized in one place. - [Monday](https://composio.dev/toolkits/monday) - Monday.com is a customizable work management platform for project planning and collaboration. It helps teams organize tasks, automate workflows, and track progress in real time. - [Addressfinder](https://composio.dev/toolkits/addressfinder) - Addressfinder is a data quality platform for verifying addresses, emails, and phone numbers. It helps you ensure accurate customer and contact data every time. - [Agiled](https://composio.dev/toolkits/agiled) - Agiled is an all-in-one business management platform for CRM, projects, and finance. It helps you streamline workflows, consolidate client data, and manage business processes in one place. - [AirOps MCP](https://composio.dev/toolkits/airops_mcp) - AirOps MCP is AirOps' managed content platform exposing brand context, knowledge bases, and workflows. Use it to give agents brand-aware content, automate content workflows, and track Brand Kit edits. - [Amazing Marvin](https://composio.dev/toolkits/amazing_marvin) - Amazing Marvin is a personal productivity app for tasks, projects, habits, planning, time tracking, and rewards. It helps you build a flexible workflow that matches how you actually work. - [AnyDB](https://composio.dev/toolkits/any_db) - AnyDB is a flexible collaborative database platform for organizing records, files, and automated workflows. It helps teams centralize data, collaborate on records, and automate routine tasks. - [ApptiveGrid](https://composio.dev/toolkits/apptivegrid) - ApptiveGrid is a collaborative no-code database and app platform for spaces, grids, forms, and structured records. It helps teams organize operational data, collect inputs, and build lightweight business apps without custom backend work. - [Ascora](https://composio.dev/toolkits/ascora) - Ascora is a cloud-based field service management platform for service businesses. It streamlines scheduling, invoicing, and customer operations in one place. - [Atlassian MCP](https://composio.dev/toolkits/atlassian_mcp) - Atlassian Rovo MCP connects agents to Jira, Jira Service Management, Confluence, Bitbucket, Compass, and Teamwork Graph workflows. It lets teams surface and act on Atlassian data while respecting existing user permissions. - [Basecamp](https://composio.dev/toolkits/basecamp) - Basecamp is a project management and team collaboration tool by 37signals. It helps teams organize tasks, share files, and communicate efficiently in one place. - [Beeminder](https://composio.dev/toolkits/beeminder) - Beeminder is an online goal-tracking platform that uses monetary pledges to keep you motivated. Stay accountable and hit your targets with real financial incentives. - [Boxhero](https://composio.dev/toolkits/boxhero) - Boxhero is a cloud-based inventory management platform for SMBs, offering real-time updates, barcode scanning, and team collaboration. It helps businesses streamline stock tracking and analytics for smarter inventory decisions. ## Frequently Asked Questions ### What are the differences in Tool Router MCP and Fathom MCP? With a standalone Fathom MCP server, the agents and LLMs can only access a fixed set of Fathom tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Fathom and many other apps based on the task at hand, all through a single MCP endpoint. ### Can I use Tool Router MCP with Atomic Agent? 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 Fathom tools. ### Can I manage the permissions and scopes for Fathom while using Tool Router? Yes, absolutely. You can configure which Fathom 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. ### How safe is my data with Composio Tool Router? 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 Fathom data and credentials are handled as safely as possible. --- [See all toolkits](https://composio.dev/toolkits) · [Composio docs](https://docs.composio.dev/llms.txt)