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How to connect FuseAI MCP to Claude

Connect Claude Web, Desktop and Cowork 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.

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Introduction

Claude is Anthropic's AI assistant, available on the web, in the desktop app, and on mobile. Cowork is its agent for knowledge work, and it runs on all of those surfaces too. Connected to your apps, Claude can work with your files and services to accomplish complex tasks on your behalf.

This guide walks you through the easiest and most secure way to connect your FuseAI account to Claude via Composio Connect, enabling it to search prospects matching enterprise buyer profile, add prospects to outreach sequence tomorrow, analyze website intent signals for Acme, and more such actions on your behalf without compromising your account security.

Setup is the same on Claude Web, Desktop, and Cowork, and you only need to do it once. The connector is tied to your account, so it's available in all three.

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Connecting FuseAI to Claude Web, Desktop, and Cowork

Two ways to add the Composio connector. Pick whichever you prefer.

1. Add with one click

Click the button. Claude opens with the Composio connector filled in. Click Add, then go to step 2.

Add to Claude

Add manually

In Claude Desktop, click Customize in the left sidebar, then select Connectors and click the + icon at the top.

Claude Desktop connectors screen with Add custom connector selected

Click Add custom connector and paste in the Composio MCP server URL:

bash
https://connect.composio.dev/mcp
Add custom connector dialog with Composio MCP server URL

2. Authorize in your browser

Click Connect. You'll be redirected to a browser window where you can authorize Composio to continue.

Composio authorization screen for Claude Web, Desktop, and Cowork

3. Connect your FuseAI account

Back in Claude, ask it to connect to FuseAI or give it any FuseAI-related task.

For example, ask Claude to:

  • "Search prospects matching enterprise buyer profile"
  • "Add prospects to outreach sequence tomorrow"
  • "Analyze website intent signals for Acme"

It will prompt you to authenticate and authorize access.

That's it. Composio's tools are now available in Claude, and your FuseAI account is ready to use.

What is the FuseAI Claude Connector, 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.

Troubleshooting

1. Why does Claude not use the Composio connector for FuseAI?

The connector can show as connected, but Claude must use it in each FuseAI conversation.

  • Click + at the lower left of the chat, or type /.
  • Hover Connectors.
  • Turn on Composio.
  • Ask Claude to connect to FuseAI again.

2. Why does Claude show an MCP server error before FuseAI connects?

Claude can show Couldn't reach the MCP server or Authorization with the MCP server failed when you add the connector for FuseAI.

  • Check that the connector URL is https://connect.composio.dev/mcp.
  • Connectors run from Anthropic's cloud, so your device network is usually not the problem.
  • Add the connector again from Customize > Connectors, then ask Claude to connect FuseAI.
  • If it fails again, send the error and the ofid_ reference id to support@composio.dev.

3. Why does the FuseAI authorization link not work?

The Composio connector is one server. Your FuseAI account connects separately when Claude asks for it.

  • If the browser does not open, or the link expires, ask Claude to retry the FuseAI connection.
  • Composio creates a fresh FuseAI authorization link.
  • Open that link in your browser and finish the FuseAI sign-in.

4. Why do FuseAI actions fail after they worked before?

The FuseAI connection can expire or lose permission.

  • Ask Claude to inspect the FuseAI connection.
  • If the connection is unhealthy, disconnect it when Claude prompts you.
  • Reconnect the FuseAI account and retry the action.
  • If Claude shows a permission prompt, approve it before Claude changes data in FuseAI.
  • If the action still fails with a permission error, check that the connected account has that permission in FuseAI itself.

5. How do I switch to a different FuseAI account?

Claude can manage the FuseAI connection for you.

  • Ask Claude to disconnect or delete the current FuseAI account.
  • Ask Claude to connect FuseAI again.
  • Open the new Composio authorization link for FuseAI.
  • Sign in with the other FuseAI account in the browser.
  • After the account connects, ask Claude to retry the FuseAI task.

6. Why is my FuseAI connection missing in Claude Desktop or on a Team plan?

The connector belongs to your Claude account, so your FuseAI connection works in Claude Web, Desktop, and Cowork.

  • In Claude Desktop, open Customize > Connectors.
  • Next to Composio, click ⋮ and click Clear cache.
  • If FuseAI tools still do not appear, click ⋮, disconnect, remove the connector, and add it again.
  • On Team or Enterprise, an Owner or Primary Owner must enable the connector before you can connect FuseAI.
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).

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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. Claude Cowork 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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