How to integrate FuseAI MCP with Atomic Agent

Connect Atomic Agent to FuseAI MCP. Search prospects matching enterprise buyer profile, add prospects to outreach sequence tomorrow, and more using natural language, with authentication handled for you.

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FuseAI MCP is a sales engagement platform for prospecting, outreach, and analytics. It centralizes prospects, inboxes, campaigns, and intent so agents can act quickly.

16 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 FuseAI.

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

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How Atomic Agent connects to FuseAI

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

The FuseAI MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your FuseAI account. It provides structured and secure access to your prospects, campaigns, inboxes, buyer signals, analytics, and research tools, so your agent can find prospects, manage outreach campaigns, handle messages, monitor intent, and conduct research on your behalf.

  • Prospecting and list management: Have your agent search for people and companies, enrich contacts, save prospects to lists, and manage existing prospect lists.
  • Campaign and sequence management: Direct your agent to create, update, duplicate, or delete campaigns, build email and LinkedIn sequences, attach prospect lists, and generate or reorder campaign steps.
  • Email and LinkedIn inbox support: Let the agent read and send messages, draft replies, organize emails with tags, and approve, decline, or skip pending outreach.
  • Signals, website intent, and analytics: Instruct your agent to monitor lead signals, review website visitors and trends, inspect campaign or dialer performance, and surface suggested next actions for contacts.
  • External and relationship research: Have your agent search and scrape the web, run deep research, explore relationship history for engaged contacts and companies, or query your internal knowledge hub.

Use FuseAI from Atomic Agent

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

Agents

The Agents / Signals feature: create, list, activate, and pause signal monitors — recurring lead/intent watchers (e.

Analytics

Read-only performance dashboards & metrics: campaign metrics and trends (email / LinkedIn / dialer, with up-or-down deltas), dialer call analytics, prospecting/enrichment volumes, and team performance.

Ask fuse brain

Ask the Fuse Brain — living relationship files for ENGAGED contacts/companies, built from the team's real emails, LinkedIn messages, calls and meetings.

Automations

Create and manage AUTOMATIONS — scheduled or event-triggered multi-step rules (website/news monitors with Slack digests, follow-up drafts, auto-enrolment into campaigns, CRM saves, AI steps, and rules that listen to or act in the user's connected apps: Google Calendar, Google Sheets, Notion, Typeform, Zendesk, Airtable, Asana, Linear, .

Campaigns

Outreach campaigns and their email/LinkedIn/dialer SEQUENCES, end to end: list/create/update/duplicate/delete campaigns; build, generate, edit, reorder, test and preview sequence steps; ATTACH LISTS to a campaign (this is how you set up reaching a list of people, including system lists like All Website Visitors — attaching to an ALREADY-ACTIVE campaign enrolls its contacts in the background, while a draft campaign enrolls at launch); manage leads (pause/resume, activity); templates; and per-campaign performance metrics + trends.

Deep research start

Starts an asynchronous Fuse Deep Research run: over several minutes it researches the request across the web in the background and produces a markdown report, plus — when the request is to find people or companies — a new Fuse prospect list.

Deep research status

Checks a Fuse Deep Research run started with deep_research_start.

Inbox

Use for anything in the user's inbox / messaging: reading, sending, flagging (read/archive/spam/delete), and tagging emails; AI-drafting email or LinkedIn replies; approving/declining/skipping pending auto-replies; and LinkedIn messaging (chats, messages, connections, invitations).

Integrations

CRM & integrations: connection status, CRM Fields/sync settings, owner mapping, pulling/pushing contacts & companies to the connected CRM (HubSpot/Salesforce/Zoho/Pipedrive/Attio), custom contact properties, and Slack notifications.

Power dialer

Power Dialer — call history (READ-ONLY).

Prospect lists

Manage the user's prospect lists: list lists (including the system/auto lists — All Website Visitors, All Saved Contacts, All Leads, All Enriched Contacts), view/search a list's rows, create/append/clean lists, smart columns, and resolve a list's real id.

Prospect search

Find people and companies, generate prospect/company search filters from a natural-language description, enrich contacts, and save prospects to lists.

Research

EXTERNAL / internet research and web tasks: search & scrape the web (Firecrawl), Google Maps & Google Jobs lookups, building a prospect list from the web (EXA websets), internal knowledge-hub semantic search, and FuseAI how-to / navigation help.

Settings

Account & workspace settings: company profile (name/website), enrichment preferences, team members & invitations, Knowledge Hub profiles, writing styles, ICPs (Ideal Customer Profiles), campaign visibility, a thin lifecycle view of existing Rules Engine automations (list/pause/resume/delete only — it does NOT create or edit automations), Deep Research provider keys (BYOK), and MANAGING the connected sending accounts — email accounts (settings/sharing/disconnect/SMTP connect/warmup start-pause), LinkedIn accounts, dialer phone numbers, and purchased sending domains & mailboxes.

Smart actions

The Smart Actions feed — the home list of suggested next actions per contact, aggregated from website visits, signal-monitor matches, campaign replies, and ICP matches.

Website intent

Use for Website Intent READ-ONLY reports + tracking config: who (companies/people/industries) is visiting the website, visitor analytics/trends, and the tracking setup (allowed domains, tag script, de-anonymization credits).

FAQ

Frequently asked questions

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

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

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