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Connect shadcn/ui to Hermes

Give Hermes governed access to shadcn/ui’s 7 tools through Runlayer, with identity, policy, scanning, and audit on every call.

Book a demo Hermes setup guide

Set up

Add shadcn/ui to Hermes in four steps

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

  1. 1

    Approve shadcn/ui in Runlayer

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

  2. 2

    Connect Hermes to Runlayer

    Install the Runlayer CLI so Hermes can reach shadcn/ui, which runs on the user’s machine.

    Hermes setup guide
  3. 3

    Sign in to shadcn/ui

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

  4. 4

    Use shadcn/ui from Hermes

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

Tools

7 shadcn/ui tools in Hermes

Runlayer policy decides which of these Hermes users can call.

  • Get project registries

    Get configured registry names from components.json - Returns error if no components.json exists (use init_project to create one)

  • List items in registries

    List items from registries (requires components.json - use init_project if missing)

  • Search items in registries

    Search for components in registries using fuzzy matching (requires components.json).

  • View items in registries

    View detailed information about specific registry items including the name, description, type and files content.

  • Get item examples from registries

    Find usage examples and demos with their complete code.

  • Get add command for items

    Get the shadcn CLI add command for specific items in a registry.

  • Get audit checklist

    Make sure to run the tool after all required steps have been completed.

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 shadcn/ui 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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