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How to integrate ContactOut MCP with Hermes

Connect Hermes to ContactOut MCP. Find contact emails for acme marketing team, enrich profile for john smith, ceo, and more using natural language, with authentication handled for you.

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ContactOut is a professional profile enrichment and contact discovery API. Find and verify email addresses to power recruiting, sales, and outreach.

25 Tools

Introduction

Hermes is a 24/7 autonomous agent that lives on your computer or server — it remembers what it learns and evolves as your usage grows.

This guide explains the easiest and most robust way to connect your ContactOut account to Hermes. You can do this through either Composio Connect CLI or Composio Connect MCP. For personal use we recommend the CLI, but you won't go wrong with MCP either.

Also integrate ContactOut with

ChatGPT WorkClaude Cowork

What is Composio Connect?

Composio Connect is a consumer offering that lets anyone plug 1,500+ applications directly into their agent harness — including Hermes. It can:

  • Search and load tools from relevant toolkits on-demand, reducing context usage.
  • Chain multiple tools to accomplish complex workflows via a remote workbench, without excessive back-and-forth with the LLM.
  • Manage app authentication end-to-end with zero manual overhead.

Integrating ContactOut with Hermes

Using Composio Connect CLI

1. Install the Composio CLI

Run the install script directly, or paste https://composio.dev/hermes into your Hermes chat box to have it installed for you.

bash
curl -fsSL https://composio.dev/install | bash
Hermes authenticating with Composio

2. Authenticate

Once the CLI is installed, ask Hermes to authenticate with Composio.

3. Connect to ContactOut

Ask your agent to connect to ContactOut, or simply request any ContactOut-related task. Hermes will prompt you to authenticate and authorize access.

4. Done. You're all set with a new ContactOut connection.

Using Composio Connect MCP

1. Get your MCP URL and API Key

Go to dashboard.composio.dev and copy your Connect MCP URL and API key.

Copy MCP URL and API key from Composio dashboard

2. Open the Hermes config file

bash
nano ~/.hermes/config.yaml

3. Add the Composio Connect MCP server

bash
mcp_servers:
  composio:
    url: "https://connect.composio.dev/mcp"
    headers:
      x-consumer-api-key: "YOUR_COMPOSIO_API_KEY"
    connect_timeout: 60
    timeout: 180

Save with Ctrl + O, Enter, then exit with Ctrl + X.

4. Restart your Hermes agent

Once restarted, ask your agent to connect to ContactOut or request any ContactOut-related task. It will prompt you to authenticate and authorize access.

5. Done!

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

The ContactOut MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your ContactOut account. It provides structured and secure access so your agent can perform ContactOut operations on your behalf.

Way Forward

With ContactOut connected, Hermes can now act on your behalf whenever it detects a relevant task or you ask it to.

From here, you can extend Hermes further:

  • Connect more apps: Calendar, Slack, Notion, Linear, and hundreds of others are available through the same Composio Connect setup. Each new integration compounds what Hermes can do for you.
  • Build workflows across tools: Once multiple apps are connected, Hermes can chain actions together — turn an email into a calendar invite, a Slack message into a Linear ticket, or a meeting note into a follow-up draft.
  • Let it learn your patterns: The more you use Hermes, the better it gets at anticipating how you'd handle recurring tasks. Give it feedback on drafts and decisions, and it will adapt.

If you run into trouble or want to share what you've built, join the community or check out the Docs for deeper configuration options.

TOOLS

Supported Tools

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

Add Campaign Recipients

Add 1-100 recipients to an existing campaign.

Check LinkedIn Contact Availability

Check whether a LinkedIn profile has a personal email, work email, or phone without revealing it or consuming credits.

Count People

Estimate matching people and available personal emails, work emails, and phones from substantive People Search filters without consuming credits.

Create Bulk Email Verification Job

Queue asynchronous deliverability verification for 1-100 email addresses, optionally delivering results to an HTTP or HTTPS callback URL; may consume verifier credits.

Create LinkedIn Contact Info Batch Job

Queue asynchronous contact discovery for 1-1000 LinkedIn profiles, optionally delivering results to a callback URL; may consume credits per profile.

Enrich Companies by Domain

Return company profiles for 1-30 domains; each found company consumes a search credit.

Enrich LinkedIn Profile

Return a professional profile for a regular LinkedIn profile URL, optionally including contact data; may consume search, email, and phone credits.

Enrich Person

Find and enrich one person using a LinkedIn URL, email, or phone; alternatively, provide a name plus employer, education, location, or job-title evidence.

Enrich Person by Email

Return a professional profile matched from an email address, optionally requesting real-time work-email verification.

Find LinkedIn Profile by Email

Resolve an email address to its matching LinkedIn profile URL.

Get API Usage Stats

Return ContactOut API credit usage and quotas for a billing month.

Get Bulk Email Verification Job

Get the status and available per-email results of an asynchronous bulk email-verification job.

Get Campaign

Return one campaign's sequence steps and optionally its performance statistics.

Get Hashed Email Identifiers

Return unordered SHA-256 hashes of normalized personal emails found for 5-100 distinct LinkedIn profiles.

Get LinkedIn Contact Info

Reveal email and optionally phone contact information for one regular LinkedIn profile URL; consumes credits when data is found.

Get LinkedIn Contact Info Batch

Synchronously reveal contact information for 1-100 LinkedIn profiles; may consume email and phone credits per profile.

Get LinkedIn Contact Info Batch Job

Get the status and available results of an asynchronous LinkedIn contact-info batch job.

List Campaigns

Return one page of email campaigns and their lifecycle statuses.

List Decision Makers

Return one page of key decision makers for the best-matching company.

Remove Campaign Recipients

Destructively remove 1-100 recipients from an existing campaign by email.

Search Companies

Return one page of companies matching identity, size, location, industry, technology, revenue, or founding-year filters.

Search People

Return one page of professional profiles matching person, role, employer, education, location, and contact-availability filters.

Start Campaign

Start a draft ContactOut campaign or resume a stopped campaign.

Stop Campaign

Stop a running ContactOut campaign, interrupting its outreach.

Verify Email

Check one email address for valid, invalid, accept-all, disposable, or unknown deliverability.

FRAMEWORKS

How to build ContactOut MCP Agent with another framework

ChatGPT Work logo

ChatGPT Work

Use ContactOut MCP with ChatGPT Work

Claude Cowork logo

Claude Cowork

Use ContactOut MCP with Claude Cowork

FAQ

Frequently asked questions

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

Yes, you can. Hermes 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 ContactOut tools.

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

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