rankparse-mcp

get_platform_domains

Read-onlyIdempotent

Get all domains running a specific platform or technology (e.g. WordPress, Shopify, Wix, Squarespace, Framer). Returns domains with DA scores. Billed at 1 credit per result returned.

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": {
      "platform": "<platform>"
    },
    "name": "get_platform_domains"
  }
}

Input Schema

Name	Required	Description
`tld`	No	Filter by top-level domain (e.g. "com", "io", "co.uk")
`sort`	No	Sort order: da_desc (default), da_asc, domain_asc
`limit`	No	Max results to return (default 100, max 1000)
`max_da`	No	Maximum domain authority score (0–100)
`min_da`	No	Minimum domain authority score (0–100)
`platform`	Yes	Platform name or slug (e.g. "wordpress", "shopify", "wix", "squarespace", "framer")

Schema Changelog

Changes observed during successful MCP inspections.

AddedJun 10, 2026

TDQS

A4.2/5.0

Behavior4/5

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

Annotations already declare readOnlyHint, idempotentHint, and destructiveHint. The description adds value by revealing that results include DA scores and that each result costs 1 credit, giving cost expectations. This goes beyond the annotations without contradicting them.

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

Conciseness5/5

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

The description is two sentences: the first states the purpose with examples, the second covers return value and billing. There is zero fluff, and the most important information is front-loaded.

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

Completeness4/5

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

The description, combined with a comprehensive schema (6 params, 100% covered) and clear annotations, provides a solid understanding of purpose, return value, cost, and filtering. It does not mention default sorting or pagination behavior, but those are already documented in the schema, so the overall package is complete.

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?

Schema description coverage is 100%, so the baseline is 3. The description does not add new parameter-level details but does give platform examples and mentions DA scores, which contextualizes min_da/max_da. The schema carries most of the parameter semantics.

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 uses a specific verb ('Get') and clearly identifies the resource ('all domains running a specific platform or technology') with concrete examples (WordPress, Shopify). It distinguishes itself from sibling tools like get_platform_trends by focusing on domain discovery rather than trends.

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

Usage Guidelines4/5

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

The description provides clear context for when to use the tool (when looking for domains by platform). It does not explicitly name alternatives or exclusions, but the examples and wording make the intended use obvious. This aligns with 'clear context, no 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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