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Connect Hex to Hermes

Give Hermes governed access to Hex’s 18 tools through Runlayer, with identity, policy, scanning, and audit on every call.

Book a demo Hermes setup guide

Set up

Add Hex to Hermes in four steps

Admins approve the server once. Everyone in Hermes then gets it through the same governed connection.

  1. 1

    Approve Hex in Runlayer

    Add Hex from the catalog and choose who can use it and which of its tools are allowed.

  2. 2

    Connect Hermes to Runlayer

    Users add the Runlayer Plugin to Hermes by following Runlayer’s setup guide. Hermes reaches Hex’s 18 tools through the Runlayer Plugin’s search and execute tools instead of listing each one.

    Hermes setup guide
  3. 3

    Sign in to Hex

    Sign in the way Hex requires. Runlayer holds the credentials so they stay out of the client’s configuration.

  4. 4

    Use Hex from Hermes

    Hex’s approved tools appear in Hermes. Every call is checked against policy and recorded.

Tools

18 Hex tools in Hermes

Runlayer policy decides which of these Hermes users can call.

  • Continue thread

    Continue a Hex Thread by adding a new message and triggering the agent to process it.

  • Create cell

    Create a new cell in the draft version of a project.

  • Create project

    Create a new project in the workspace with the specified title, and optionally a description.

  • Create thread

    Create a new Hex Thread to ask a question about your data.

  • Delete cell

    Delete a cell from the draft version of a project by ID

  • Get cell

    Get a single cell by ID

  • Get cell image

    Get the rendered PNG image of a chart cell, returned as an image.

  • Get cell output

    Get the latest output preview for a SQL cell in the active draft notebook session.

See all 18 Hex tools

Control

What Runlayer can see and stop in Hermes

Some controls apply to every client at the gateway. Others depend on what Hermes exposes to Runlayer.

  • Gateway policy (available)

    Every Hex call from Hermes passes through Runlayer, where your policies can allow, alert, mask, or block it.

  • Audit trail (available)

    Each call is recorded with the user, Hermes as the client, the tool, and the policy and scanner decisions.

  • Client hooks (available)

    Capture supported prompts, reasoning, local and MCP tool calls, responses, and scanner decisions in real time.

  • Stop a call before it runs (available)

    Runlayer can deny a tool call before Hermes runs it.

  • Block output after it runs (available)

    Runlayer can block a tool’s output in Hermes and show a message in its place.

  • Redact output in place (not available)

    Hermes cannot take masked output, so Runlayer can block a tool’s output but not mask it. The gateway still applies policy to the call.

In Hermes

  • Hermes can replace blocked tool output with a message, but its after-call event is for monitoring only.

Frequently asked questions

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