X (Twitter)LinkedInGitHubDiscordYouTube

How to integrate Polar Signals MCP with Hermes

Connect Hermes to Polar Signals MCP. Summarize top cpu hotspots last week, list regressions across releases for auth-service, and more using natural language, with authentication handled for you.

Get started for freeGet a demo
Polar Signals MCP logoPolar Signals MCP
Api Key

Polar Signals MCP is a continuous profiling and performance monitoring service for engineering teams. Use it to find regressions and surface runtime optimization opportunities.

8 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 Polar Signals 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 Polar Signals MCP 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 Polar Signals 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 Polar Signals

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

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

5. Done!

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

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

Way Forward

With Polar Signals 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 Polar Signals MCP action and event your agent gets out of the box.

List projects

List all projects accessible to the current user.

Query profile flamegraph

Return a flame graph as a breadth-first call tree.

Query profile labels

Get available label names for a specific profile type.

Query profile label values

List the values a profiling label takes (e.

Query profile sandwich

Show the calling context around a specific function: which functions call it (callers) and which functions it calls (callees).

Query profile source

Retrieve per-line profiling data for a specific source file.

Query profile table

Query profiling data as a flat table of functions sorted by cumulative time.

Query profile types

ProfileTypes returns the list of available profile types.

FRAMEWORKS

How to build Polar Signals MCP Agent with another framework

ChatGPT Work logo

ChatGPT Work

Use Polar Signals MCP with ChatGPT Work

Claude Cowork logo

Claude Cowork

Use Polar Signals MCP with Claude Cowork

FAQ

Frequently asked questions

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

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

Start with Polar Signals MCP.It takes 30 seconds.

Managed auth, hosted MCP servers, and every Polar Signals MCP tool your agent needs.Free to start.

Start building