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postman-mcp-server

postman-mcp-server

by delano
OverviewSchemaSourceRelated ServersDiscussionsAdmin
TypeScript
Remote

create_collection

Create a new Postman collection in a workspace using v2.1.0 format. Provide collection details including name and schema.

Instructions

Create a new collection in a workspace. Supports Postman Collection v2.1.0 format.

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": {
      "collection": "<collection>"
    },
    "name": "create_collection"
  }
}

Input Schema

NameRequiredDescriptionDefault
workspaceNoWorkspace ID. Creates in "My Workspace" if not specified.
collectionYesCollection details in Postman Collection Format v2.1

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.2.0

TDQS

B3.4/5.0
Behavior2/5

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

No annotations are provided, so the description carries full burden. It only mentions 'Supports Postman Collection v2.1.0 format' but does not disclose side effects, required permissions, rate limits, or error behaviors beyond creating a new resource.

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, concise sentence that front-loads the action. It is efficient with no redundant information, though it could be slightly expanded with key behavioral notes.

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

Completeness3/5

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

The description covers the primary intent and supported format but lacks details on return value, error handling, or permissions. Given the absence of an output schema and annotations, more completeness would be beneficial for a creation tool.

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

Parameters4/5

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

Schema coverage is 100% with descriptions for both parameters. The description adds value by specifying 'Postman Collection v2.1.0 format', which provides context for the collection object parameter beyond the schema's structural definition.

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 clearly states 'Create a new collection in a workspace' with a specific verb and resource, and distinguishes from sibling tools like update_collection or delete_collection by specifying creation.

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?

The description provides no guidance on when to use this tool versus alternatives (e.g., update_collection, fork_collection). It does not mention prerequisites, success conditions, or exclusion criteria.

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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