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How to integrate Harvey MCP with Hermes

Connect Hermes to Harvey MCP. List recent audit logs for your organization, find client matters updated this week, and more using natural language, with authentication handled for you.

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Harvey is a legal AI platform for managing client matters, documents, intake, and audit logs. It helps legal teams organize case work and review activity in one secure workspace.

35 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 Harvey 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 Harvey 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 Harvey 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 Harvey

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

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

5. Done!

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

The Harvey MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Harvey account. It provides structured and secure access to Harvey's legal AI assistants, Vault documents, client matters, intake requests, audit logs, and usage history, so your agent can run legal AI tasks, search and manage documents, organize client matters, submit intake requests, and track workspace activity on your behalf.

  • Legal AI tasks: Have your agent start Harvey agent runs or generate Assistant responses using prompts, documents, knowledge sources, matter context, model selection, and citations.
  • Vault document work: Let the agent create and manage Vault projects, upload and search files, check processing status, add files to review tables, and retrieve review results.
  • Client and matter management: Direct your agent to create, update, restore, list, or delete Harvey clients and matters, including matter usage information.
  • Intake request handling: Instruct your agent to submit Harvey intake requests with documents and check their status, assignment, timestamps, and attachments.
  • Activity and usage tracking: Have your agent inspect audit logs and export query or workspace usage history for a selected time period.

Way Forward

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

Add Review Table Row

Add one processed file or a group of processed files to a Harvey review table and schedule asynchronous review processing.

Create Agent Thread

Start an asynchronous Harvey agent run from a prompt and optional documents.

Create Assistant Completion

Generate one non-streaming Harvey Assistant response from a prompt with optional documents or knowledge sources, matter attribution, model selection, and citations.

Create History File Download URLs

Create time-limited pre-signed download URLs for file IDs returned by Harvey query-history exports.

Create Intake Request

Submit an idempotent request and optional documents to the Harvey Intake queue.

Create Vault Project

Create a Harvey Vault project or knowledge base, optionally attributed to a client matter.

Delete Matters

Idempotently soft-delete 1 to 10,000 Harvey matters by firm client and matter identifiers.

Delete Vault File

Permanently delete one file from a Harvey Vault project.

Delete Vault Project

Move an entire Harvey Vault project and all its contents to the workspace recycle bin.

Export Query History

Export enriched query history for a UTC epoch window of at most 30 days, optionally including related file IDs.

Export Usage History

Export enriched Harvey workspace usage events for a UTC epoch range of at most 30 days, optionally including related file IDs.

Get Agent

Return metadata for one reachable published Harvey agent.

Get Agent Thread

Read one Harvey agent thread status and any available answer, citations, generated files, or error.

Get Current User

Return the Harvey service-user identity associated with the connected API token.

Get Earliest Audit Log

Return the earliest available Harvey audit log, optionally filtered by log type.

Get Intake Request

Read one Harvey Intake request's lifecycle state, assignment, timestamps, and attachments.

Get Latest Audit Log

Return the latest available Harvey audit log, optionally for one log type.

Get Review Table

Return a Harvey review table's title, creation time, and associated file IDs.

Get Review Table Row

Return a Harvey review-table row and its cell results for one file.

Get Vault Files

Return details and processing status for up to 1,000 Harvey Vault file IDs.

Get Vault Project

Return a Harvey Vault project's metadata, file identifiers and names, review tables, and storage limits.

List Agents

List published Harvey agents available to the connected service user, one cursor page at a time.

List Audit Logs

Page forward through Harvey audit logs from a starting log ID, optionally filtered by log type.

List Client Matters

Return all Harvey client matters, including deleted records and usage statistics.

List Recycled Vault Projects

List Vault projects currently in the workspace recycle bin, optionally filtered by project-name text or client matter.

List Vault Project Files

List, filter, and sort files in a Harvey Vault project, one cursor page at a time.

List Vault Projects

List and filter workspace Vault projects and knowledge bases, one page at a time.

List Vault Project Users

List workspace users with direct or inherited effective access to a Harvey Vault project.

Remove Vault Project Users

Remove direct WORKSPACE_USER shares from a Harvey Vault project by email.

Search Audit Logs by Time

Return the first Harvey audit log at or after a UTC epoch timestamp, optionally filtered by log type.

Search Vault

Return semantically relevant document chunks from one Harvey Vault project.

Update Vault Project Users

Add workspace users or update their direct access level on a Harvey Vault project.

Upload Vault Files

Upload up to 50 new or replacement files to a Harvey Vault project.

Upsert Clients

Create, update, or restore up to 10,000 Harvey clients by firm client identifier.

Upsert Matters

Create, update, or restore up to 10,000 Harvey matters under existing clients.

FRAMEWORKS

How to build Harvey MCP Agent with another framework

ChatGPT logo

ChatGPT

Use Harvey MCP with ChatGPT

Claude Cowork logo

Claude Cowork

Use Harvey MCP with Claude Cowork

Atomic Agent logo

Atomic Agent

Use Harvey MCP with Atomic Agent

FAQ

Frequently asked questions

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

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

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