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How to integrate OData MCP with Hermes

Connect Hermes to OData MCP. List all entity sets and schemas, query products with stock less than 10, and more using natural language, with authentication handled for you.

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OData logoOData
Basic

OData is a web protocol that exposes data via HTTP in the OData V2 format. Use it to discover service metadata and work with exposed entity sets.

7 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 OData 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 OData 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 OData 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 OData

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

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

5. Done!

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

The OData MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your OData account. It provides structured and secure access to your exposed data collections, so your agent can discover collections, inspect schemas, retrieve records, modify data, and delete permitted records on your behalf.

  • Data collection discovery: Have your agent list the available data collections, their keys, and the actions each collection supports.
  • Schema inspection: Let the agent examine a collection's fields, relationships, keys, and usage restrictions before working with its records.
  • Record retrieval and queries: Instruct your agent to fetch a specific record or find records using filters, selected fields, and sorting.
  • Record creation and updates: Direct your agent to create new records, including related records when supported, or update selected details on existing records.
  • Record deletion: Have your agent permanently remove a specific record when the connected service permits deletion.

Way Forward

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

Create Entity

Create one entity or a bounded tree of new related entities in exactly one OData V2 POST.

Delete Entity

Permanently delete one metadata-keyed OData V2 entity only when metadata permits HTTP DELETE.

Get Entity

Retrieve one metadata-declared OData V2 entity by its complete typed key and optionally project selected structural properties.

Get Entity Schema

Return normalized CSDL keys, structural properties, navigation relationships, and effective restrictions for one exact entity set in the connected OData V2 service.

List Entities

Validate the connected OData V2 service and list its metadata-declared entity sets, ordered keys, and effective query and write restrictions.

Query Entities

Return exactly one bounded page from a metadata-declared OData V2 entity set using validated filtering, projection, and ordering; expansion is not supported.

Update Entity

Partially update one metadata-declared OData V2 entity through POST method tunneling with MERGE semantics; unsupported providers fail without PUT or PATCH fallback.

FRAMEWORKS

How to build OData MCP Agent with another framework

ChatGPT logo

ChatGPT

Use OData MCP with ChatGPT

Claude Cowork logo

Claude Cowork

Use OData MCP with Claude Cowork

Atomic Agent logo

Atomic Agent

Use OData MCP with Atomic Agent

FAQ

Frequently asked questions

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

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

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