How to integrate Stack exchange MCP with Hermes

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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 Stack exchange 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 Stack exchange with

What is Composio Connect?

Composio Connect is a consumer offering that lets anyone plug 1,000+ 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 Stack exchange 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 Stack exchange

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

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

5. Done!

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

The Stack exchange MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Stack Exchange account. It provides structured and secure access to your Stack Exchange activity, so your agent can perform actions like searching questions, exploring collectives, retrieving comments, and analyzing post revisions on your behalf.

  • Powerful question search and discovery: Instantly ask your agent to search for Stack Exchange questions by keyword or tag, helping you find relevant discussions and solutions faster.
  • Collectives and tags exploration: Have your agent retrieve lists of collectives and their associated tags, making it easy to discover expert communities and filter content by topic.
  • Comment management and flagging: Let your agent fetch comments from specific sites and check valid flag options, streamlining comment moderation and participation.
  • Revision history analysis: Direct your agent to retrieve and review the full edit history of posts, enabling transparent audits or understanding how answers evolve over time.
  • Site discovery and navigation: Use your agent to list all available Stack Exchange sites and their API parameters, ensuring you always target the right community for your needs.

Supported Tools & Triggers

Tools
Get Collective QuestionsTool to retrieve questions associated with the specified collective.
Get CollectivesTool to retrieve all collectives on a stack exchange site in alphabetical order.
Get Collective TagsTool to retrieve tags associated with specified collectives.
Get Comment Flag OptionsTool to fetch valid flag options for a given comment.
Get CommentsTool to retrieve comments from a specified stack exchange site.
Get Revisions By IDsTool to retrieve revisions for specific posts by their ids.
Search QuestionsTool to search the site for questions meeting certain criteria.
Get SitesTool to retrieve all stack exchange sites and their api site parameter values.

Way Forward

With Stack exchange 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.

How to build Stack exchange MCP Agent with another framework

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OpenAI Agents SDK

Use Stack exchange MCP with OpenAI Agents SDK

Claude Agent SDK logo

Claude Agent SDK

Use Stack exchange MCP with Claude Agent SDK

Claude Code logo

Claude Code

Use Stack exchange MCP with Claude Code

Codex logo

Codex

Use Stack exchange MCP with Codex

OpenClaw logo

OpenClaw

Use Stack exchange MCP with OpenClaw

CLI logo

CLI

Use Stack exchange MCP with CLI

Google ADK logo

Google ADK

Use Stack exchange MCP with Google ADK

LangChain logo

LangChain

Use Stack exchange MCP with LangChain

Vercel AI SDK logo

Vercel AI SDK

Use Stack exchange MCP with Vercel AI SDK

Mastra AI logo

Mastra AI

Use Stack exchange MCP with Mastra AI

LlamaIndex logo

LlamaIndex

Use Stack exchange MCP with LlamaIndex

CrewAI logo

CrewAI

Use Stack exchange MCP with CrewAI

FAQ

What are the differences in Tool Router MCP and Stack exchange MCP?

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

Can I use Tool Router MCP with Hermes?

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 Stack exchange tools.

Can I manage the permissions and scopes for Stack exchange while using Tool Router?

Yes, absolutely. You can configure which Stack exchange 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.

How safe is my data with Composio Tool Router?

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 Stack exchange data and credentials are handled as safely as possible.

Used by agents from

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Context
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glean
HubSpot
Agent.ai
Altera
DataStax
Entelligence
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Context
Letta
glean
HubSpot
Agent.ai
Altera
DataStax
Entelligence
Rolai

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