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Connect Lattice to Hermes

Give Hermes governed access to Lattice’s 22 tools through Runlayer, with identity, policy, scanning, and audit on every call.

Book a demo Hermes setup guide

Set up

Add Lattice to Hermes in four steps

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

  1. 1

    Approve Lattice in Runlayer

    Add Lattice 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 Lattice’s 22 tools through the Runlayer Plugin’s search and execute tools instead of listing each one.

    Hermes setup guide
  3. 3

    Sign in to Lattice

    Each user signs in to Lattice with OAuth. Runlayer keeps the tokens out of the client’s configuration.

  4. 4

    Use Lattice from Hermes

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

Tools

22 Lattice tools in Hermes

Runlayer policy decides which of these Hermes users can call. 15 read data only.

  • Find ancestors

    Find ancestors.

  • Find employees

    Searches for employees in the user's company by name, work email, and/or department.

  • Find feedback

    Retrieves feedback items the user has visibility into.

  • Find one on ones

    Find one on ones.

  • Find reports

    Find reports.

  • Find reviews

    Retrieves reviews the user is permitted to see, filterable by who the review is about, who wrote it, the cycle, direction, submission/sharing status, and date range.

  • Get current update draft

    Returns the user's current-period update draft, with the questions on the form, any answers already saved, the period bounds, and the cadence.

  • Get draft reviews

    Retrieves the open performance review drafts the user is currently authoring.

See all 22 Lattice 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 Lattice 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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