Skip to main content
Book a demo

Connect Harmonic to Codex

Give Codex governed access to Harmonic’s 47 tools through Runlayer, with identity, policy, scanning, and audit on every call.

Book a demo Codex setup guide

Set up

Add Harmonic to Codex in four steps

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

  1. 1

    Add Harmonic to Runlayer

    Harmonic isn’t in the Runlayer catalog yet, so an admin adds it by its MCP server URL.

    Adding a connector manually
  2. 2

    Connect Codex to Runlayer

    Runlayer’s CLI adds the Runlayer Plugin to Codex’s local plugin marketplace, and users then enable it in Codex. With direct tool listing turned on for your deployment, Harmonic’s 47 tools show up in Codex’s own tool list (Codex 0.122 or newer, installed through the Runlayer CLI).

    Codex setup guide
  3. 3

    Sign in to Harmonic

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

  4. 4

    Use Harmonic from Codex

    Harmonic’s approved tools appear in Codex. Every call is checked against policy and recorded.

Tools

47 Harmonic tools in Codex

Runlayer policy decides which of these Codex users can call.

  • Add companies to list

    Add companies to an existing company list.

  • Add people to list

    Add people to an existing people list.

  • Create company list

    Create a new company list.

  • Create company list custom field

    Create a custom field (column) for a company list.

  • Create global custom field

    Create a new global custom field for companies or people.

  • Create list

    Create an empty company, person, or investor list in the workspace's shared project.

  • Create list custom field

    Create a custom field on any company, person, or investor list.

  • Create list entries

    Add Harmonic companies, people, or investors to an existing list by creating list entries from their URNs.

See all 47 Harmonic tools

Control

What Runlayer can see and stop in Codex

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

  • Gateway policy (available)

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

  • Audit trail (available)

    Each call is recorded with the user, Codex 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 or permission request before Codex runs it.

  • Block output after it runs (available)

    Runlayer can block a tool’s output before Codex’s model sees it.

  • Redact output in place (not available)

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

Frequently asked questions

Connect more

Find another combination