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SalehKhatri

postman-mcp

by SalehKhatri

add_request

Add a new HTTP request to a Postman collection, specifying method, URL, headers, body, and optional folder.

Instructions

Add a new request to a collection

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
urlYesRequest URL
bodyNoRequest body (will be stringified if object)
nameYesName of the request
folderNoFolder path (e.g., "folder1/folder2")
methodYesHTTP method
headersNoRequest headers as key-value pairs
descriptionNoRequest description
collectionUidYesThe UID of the collection
Behavior1/5

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. It merely restates the operation name without mentioning side effects, required field validations, return values, or potential errors. This is essentially a tautology with no additional behavioral information.

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 avoids wasted words. It is front-loaded and direct, though it sacrifices substance for brevity.

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

Completeness1/5

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

This 8-parameter tool with no annotations or output schema requires substantial context. The description provides none: no mention of required fields, return values, prerequisites, or behavior. It is severely incomplete for a tool of this complexity.

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 all 8 parameters, each with descriptions, so the baseline is 3. The tool description adds no parameter-level information, but the schema fully documents the parameters, making this adequate.

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 the action ('Add'), the resource ('request'), and the target ('a collection'). It distinguishes from sibling tools like update_request and delete_request, making the purpose unambiguous.

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, such as update_request for modifications or create_collection for collections. The description only states the action without any context on prerequisites or exclusions.

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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