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Connect Postman to Gemini CLI

Give Gemini CLI governed access to Postman’s 41 tools through Runlayer, with identity, policy, scanning, and audit on every call.

Book a demo Gemini CLI setup guide

Set up

Add Postman to Gemini CLI in four steps

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

  1. 1

    Approve Postman in Runlayer

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

  2. 2

    Connect Gemini CLI to Runlayer

    Users add the Runlayer Plugin to Gemini CLI by following Runlayer’s setup guide. Gemini CLI reaches Postman’s 41 tools through the Runlayer Plugin’s search and execute tools instead of listing each one.

    Gemini CLI setup guide
  3. 3

    Sign in to Postman

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

  4. 4

    Use Postman from Gemini CLI

    Postman’s approved tools appear in Gemini CLI. Every call is checked against policy and recorded.

Tools

41 Postman tools in Gemini CLI

Runlayer policy decides which of these Gemini CLI users can call.

  • Create collection

    Creates a collection using the [Postman Collection v2.1.0 schema format](https://schema.postman.com/collection/json/v2.1.0/draft-07/docs/index.html).

  • Create collection request

    Creates a request in a collection.

  • Create collection response

    Creates a request response in a collection.

  • Create environment

    Creates an environment.

  • Create mock

    Creates a mock server in a collection.

  • Create spec

    Creates an API specification in Postman's [Spec Hub](https://learning.postman.com/docs/design-apis/specifications/overview/).

  • Create spec file

    Creates a file for an OpenAPI or a protobuf 2 or 3 specification.

  • Create workspace

    Creates a new [workspace](https://learning.postman.com/docs/collaborating-in-postman/using-workspaces/creating-workspaces/).

See all 41 Postman tools

Control

What Runlayer can see and stop in Gemini CLI

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

  • Gateway policy (available)

    Every Postman call from Gemini CLI passes through Runlayer, where your policies can allow, alert, mask, or block it.

  • Audit trail (available)

    Each call is recorded with the user, Gemini CLI 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 Gemini CLI runs it.

  • Block output after it runs (available)

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

  • Redact output in place (not available)

    Gemini CLI can only add text to a tool result, not replace it, so Runlayer blocks output it would otherwise mask. The gateway still applies policy to the call.

In Gemini CLI

  • Enforcement needs Gemini CLI 0.26.0 or newer.
  • When Runlayer blocks a call or its output, Gemini CLI shows the model the block reason instead.

Frequently asked questions

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