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How to integrate Trestle MCP with Hermes

Connect Hermes to Trestle MCP. Validate this phone number before contacting, identify the caller behind this number, and more using natural language, with authentication handled for you.

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Trestle is an identity data API platform for phone, caller, and address data. It helps businesses verify contact details and improve data quality.

3 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 Trestle 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 Trestle with

ChatGPTClaude CoworkAtomic Agent

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 Trestle 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 Trestle

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

4. Done. You're all set with a new Trestle 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 Trestle or request any Trestle-related task. It will prompt you to authenticate and authorize access.

5. Done!

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

The Trestle MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Trestle account. It provides structured and secure access to identity data, so your agent can validate phone numbers, identify likely phone owners, verify contact details, and review phone, email, address, and IP match signals on your behalf.

  • Phone number validation: Have your agent check phone activity, carrier, line type, country, and prepaid status for supplied numbers.
  • Phone owner lookup: Let the agent find ranked person or business owners and current addresses associated with a phone number.
  • Contact verification: Direct your agent to verify supplied contact details using phone, email, address, and IP match signals.
  • Inbound lead checks: Instruct your agent to assess contact information for identity or inbound-lead verification before your team follows up.

Way Forward

With Trestle 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 Trestle action and event your agent gets out of the box.

Look Up Phone Owners

Look up ranked person or business owners and current addresses associated with a supplied phone number for permitted caller-identification or identity-management use.

Validate Phone

Validate a supplied phone number and return activity, carrier, line-type, country, and prepaid signals.

Verify Contact

Verify supplied contact details for identity or inbound-lead verification and return phone, email, address, and IP match signals.

FRAMEWORKS

How to build Trestle MCP Agent with another framework

ChatGPT logo

ChatGPT

Use Trestle MCP with ChatGPT

Claude Cowork logo

Claude Cowork

Use Trestle MCP with Claude Cowork

Atomic Agent logo

Atomic Agent

Use Trestle MCP with Atomic Agent

FAQ

Frequently asked questions

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

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

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