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postman-mcp-server

postman-mcp-server

by delano
OverviewSchemaSourceRelated ServersDiscussionsAdmin
TypeScript
Remote

fork_environment

Duplicate a Postman environment into a specified workspace by providing the environment ID and a new label for the fork.

Instructions

Create a fork of an environment in a workspace

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "environmentId": "<environmentId>",
      "label": "<label>",
      "workspace": "<workspace>"
    },
    "name": "fork_environment"
  }
}

Input Schema

NameRequiredDescriptionDefault
labelYesLabel/name for the forked environment
workspaceYesTarget workspace ID
environmentIdYesEnvironment ID in format: {ownerId}-{environmentId}

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.2.0

TDQS

B3.1/5.0
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations, the description carries the full burden of behavioral disclosure, but it only states 'Create a fork'. It does not mention side effects (e.g., whether the original environment is modified), permission requirements, or the outcome of a fork (e.g., what is copied). This is insufficient for a mutation tool.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single sentence of 10 words, which is very concise. However, it is overly brief and lacks detail, making it less useful. A 4 is appropriate as conciseness is achieved but at the expense of completeness.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the lack of output schema and annotations, the description should provide more context about return values, behavior, and when to use the tool. It does not explain what a fork entails or how the result differs from the original environment. This is insufficient for an agent to invoke it correctly.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The schema provides 100% coverage for the three parameters, so the description does not need to add much. However, the description adds no additional meaning beyond the schema—it does not explain the format of environmentId or the significance of workspace.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description states the action (create a fork), the resource (an environment), and the context (in a workspace). This clearly distinguishes it from sibling tools like 'create_environment' (which creates a new environment) and 'fork_collection' (which forks a collection).

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance is provided on when to use this tool versus alternatives like 'create_environment' or 'merge_environment_fork'. The description does not mention prerequisites, when not to use it, or how it relates to other forking or environment operations.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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