list_environments

List all environments in a workspace. If workspace not specified, lists environments in

SERVERPostman SOURCEdelano/postman-mcp-server

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/delano-postman-mcp-server/list-environments.md

WHAT IT DOES

What list_environments does on Postman

AI agents call list_environments to retrieve information from Postman without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why list_environments is rated Low

This tool retrieves and enumerates environment data from Postman without modifying, creating, or deleting anything. It is a non-destructive read operation with minimal security impact unless the workspace contains highly sensitive configuration data. Classified as Read with low severity due to the informational nature of the operation.

From the tool's definition Tool name is 'list_environments' and description states 'List all environments in a workspace' — a query/retrieval operation with no side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs list_environments safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Postman, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For list_environments, this is the rule to start with:

list_environments Allowed

list_environments is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "list_environments": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Postman, apply this rule, and every list_environments call is checked against it from then on.

FAQ

Questions about list_environments

What does the list_environments tool do? +

List all environments in a workspace. If workspace not specified, lists environments in. It is categorised as a Read tool in the Postman MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_environments? +

Register the Postman MCP server in PolicyLayer and add a rule for list_environments: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Postman. Nothing to install.

What risk level is list_environments? +

list_environments is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit list_environments? +

Yes. Add a rate_limit block to the list_environments rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block list_environments completely? +

Set action: deny in the PolicyLayer policy for list_environments. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides list_environments? +

list_environments is provided by the Postman MCP server (delano/postman-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

What list_environments does on Postman

Why list_environments is rated Low

The rule that runs list_environments safely

Questions about list_environments

More on Postman, and thousands of servers like it.