# How to integrate Harness MCP with Hermes

```json
{
  "title": "How to integrate Harness MCP with Hermes",
  "toolkit": "Harness",
  "toolkit_slug": "harness",
  "framework": "Hermes",
  "framework_slug": "hermes-agent",
  "url": "https://composio.dev/toolkits/harness/framework/hermes-agent",
  "markdown_url": "https://composio.dev/toolkits/harness/framework/hermes-agent.md",
  "updated_at": "2026-10-12T12:48:31.569Z"
}
```

## 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 Harness 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 Harness with

- [ChatGPT](https://composio.dev/toolkits/harness/framework/chatgpt)
- [Claude Cowork](https://composio.dev/toolkits/harness/framework/claude-cowork)
- [Atomic Agent](https://composio.dev/toolkits/harness/framework/atomic-agent)

## TL;DR

### 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.

## Connect Harness to Hermes

### Integrating Harness 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
```

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

The Harness MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Harness account. It provides structured and secure access to your organizations, projects, pipelines, executions, services, environments, and templates, so your agent can find deployment resources, review pipeline activity, check execution status, inspect service environments, and discover reusable templates on your behalf.
- Organization and project discovery: Have your agent list accessible organizations and projects, then narrow the results by organization, module, or search terms.
- Pipeline exploration: Direct your agent to find pipelines in a project by name, search text, or Git branch.
- Execution monitoring: Let the agent review pipeline executions and filter them by pipeline, status, search text, or ownership.
- Service and environment visibility: Instruct your agent to find project services by deployment type, tags, storage, GitOps state, or search text, and list environments that match your criteria.
- Template discovery: Have your agent search account templates by state, type, name, description, or other search text.

## Supported Tools

| Tool slug | Name | Description |
|---|---|---|
| `HARNESS_LIST_ENVIRONMENTS` | List Environments | List one page of environments in a Harness project, optionally filtered by identifiers or search text. |
| `HARNESS_LIST_EXECUTIONS` | List Pipeline Executions | List one page of pipeline executions in a Harness project, optionally filtered by pipeline, status, search text, or current-user ownership. |
| `HARNESS_LIST_ORGANIZATIONS` | List Organizations | List one page of Harness organizations accessible to the connected account, optionally filtered by identifier or search text. |
| `HARNESS_LIST_PIPELINES` | List Pipelines | List one page of pipelines in a Harness project, optionally filtered by search text or Git branch. |
| `HARNESS_LIST_PROJECTS` | List Projects | List one page of Harness projects accessible to the connected account, optionally within an organization or filtered by module and search text. |
| `HARNESS_LIST_SERVICES` | List Services | List one page of services in a Harness project, optionally filtered by identifiers, deployment type, tags, storage, GitOps state, or search text. |
| `HARNESS_LIST_TEMPLATES` | List Templates | List one page of account-scoped Harness templates, optionally filtered by template state, entity or child type, identifier, name, description, or search text. |

## Supported Triggers

None listed.

## Creating MCP Server - Stand-alone vs Composio SDK

The Harness MCP server provides comprehensive access to Harness operations through Composio. Once connected, Hermes can perform all major Harness actions on your behalf using natural language commands.

## Complete Code

None listed.

## Conclusion

### Way Forward
With Harness 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](https://discord.com/invite/composio) or check out the [Docs](https://docs.composio.dev?utm_source=toolkits&utm_medium=framework_template&utm_campaign=hermes&utm_content=docs) for deeper configuration options.

## How to build Harness MCP Agent with another framework

- [ChatGPT](https://composio.dev/toolkits/harness/framework/chatgpt)
- [Claude Cowork](https://composio.dev/toolkits/harness/framework/claude-cowork)
- [Atomic Agent](https://composio.dev/toolkits/harness/framework/atomic-agent)

## Related Toolkits

- [Supabase](https://composio.dev/toolkits/supabase) - Supabase is an open-source backend platform offering scalable Postgres databases, authentication, storage, and real-time APIs. It lets developers build modern apps without managing infrastructure.
- [Codeinterpreter](https://composio.dev/toolkits/codeinterpreter) - Codeinterpreter is a Python-based coding environment with built-in data analysis and visualization. It lets you instantly run scripts, plot results, and prototype solutions inside supported platforms.
- [GitHub](https://composio.dev/toolkits/github) - GitHub is a code hosting platform for version control and collaborative software development. It streamlines project management, code review, and team workflows in one place.
- [1password](https://composio.dev/toolkits/_1password) - 1Password is a password manager and digital vault for storing logins, secrets, notes, and secure documents. It helps individuals and teams protect credentials, share access safely, and reduce password risk.
- [Ably](https://composio.dev/toolkits/ably) - Ably is a real-time messaging platform for live chat and data sync in modern apps. It offers global scale and rock-solid reliability for seamless, instant experiences.
- [Abuselpdb](https://composio.dev/toolkits/abuselpdb) - Abuselpdb is a central database for reporting and checking IPs linked to malicious online activity. Use it to quickly identify and report suspicious or abusive IP addresses.
- [Alchemy](https://composio.dev/toolkits/alchemy) - Alchemy is a blockchain development platform offering APIs and tools for Ethereum apps. It simplifies building and scaling Web3 projects with robust infrastructure.
- [Algolia](https://composio.dev/toolkits/algolia) - Algolia is a hosted search API that powers lightning-fast, relevant search experiences for web and mobile apps. It helps developers deliver instant, typo-tolerant, and scalable search without complex infrastructure.
- [Anakin](https://composio.dev/toolkits/anakin_io) - Anakin is a web automation platform offering scraping, crawling, search, and browser automation. Use it to extract structured data, automate site tasks, and monitor web changes reliably.
- [Anchor browser](https://composio.dev/toolkits/anchor_browser) - Anchor browser is a developer platform for AI-powered web automation. It transforms complex browser actions into easy API endpoints for streamlined web interaction.
- [Apiflash](https://composio.dev/toolkits/apiflash) - Apiflash is a website screenshot API for programmatically capturing web pages. It delivers high-quality screenshots on demand for automation, monitoring, or reporting.
- [Apiverve](https://composio.dev/toolkits/apiverve) - Apiverve delivers a suite of powerful APIs that simplify integration for developers. It's designed for reliability and scalability so you can build faster, smarter applications without the integration headache.
- [Appcircle](https://composio.dev/toolkits/appcircle) - Appcircle is an enterprise-grade mobile CI/CD platform for building, testing, and publishing mobile apps. It streamlines mobile DevOps so teams ship faster and with more confidence.
- [Appdrag](https://composio.dev/toolkits/appdrag) - Appdrag is a cloud platform for building websites, APIs, and databases with drag-and-drop tools and code editing. It accelerates development and iteration by combining hosting, database management, and low-code features in one place.
- [Appveyor](https://composio.dev/toolkits/appveyor) - AppVeyor is a cloud-based continuous integration service for building, testing, and deploying applications. It helps developers automate and streamline their software delivery pipelines.
- [Authyo](https://composio.dev/toolkits/authyo) - Authyo is a REST API service for passwordless authentication, OTP verification, session management, and transactional notifications. Use it to add secure login flows and user verification without building auth infrastructure from scratch.
- [AWS Marketplace MCP](https://composio.dev/toolkits/aws_marketplace_mcp) - AWS Marketplace MCP provides MCP access to AWS Marketplace's cloud software, data, and services catalog. Use it to discover, compare, and evaluate 30K+ AWS Marketplace listings faster.
- [Azure Monitor Activity Log](https://composio.dev/toolkits/azure_monitor_activity_log) - Azure Monitor Activity Log is Azure's service that records management and control-plane events for a subscription. Use it to audit changes, troubleshoot issues, and track resource operations across your Azure resources.
- [Backendless](https://composio.dev/toolkits/backendless) - Backendless is a backend-as-a-service platform for mobile and web apps, offering database, file storage, user authentication, and APIs. It helps developers ship scalable applications faster without managing server infrastructure.
- [Baserow](https://composio.dev/toolkits/baserow) - Baserow is an open-source no-code database platform for building collaborative data apps. It makes it easy for teams to organize data and automate workflows without writing code.

## Frequently Asked Questions

### What are the differences in Tool Router MCP and Harness MCP?

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

### Can I manage the permissions and scopes for Harness while using Tool Router?

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

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