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app-store-connect-mcp

app-store-connect-mcp

by devinwang
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TypeScript
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merchant_ids_certificates_get_to_many_relationship

Retrieve certificate relationships for a merchant ID to list all certificates linked to that merchant, with an optional pagination limit.

Instructions

GET /v1/merchantIds/{id}/relationships/certificates (GET /v1/merchantIds/{id}/relationships/certificates)

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": {
      "id": "<id>"
    },
    "name": "merchant_ids_certificates_get_to_many_relationship"
  }
}

Input Schema

NameRequiredDescriptionDefault
idYesthe id of the requested resource
limitNomaximum resources per page

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.5.0

TDQS

D1.9/5.0
Behavior1/5

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

No annotations are provided, so the description carries the full behavioral burden, yet it discloses nothing: no pagination behavior despite the 'limit' parameter, no auth/permission requirements, no return shape information. A bare endpoint string is not sufficient for a read tool with zero annotation coverage.

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

Conciseness2/5

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

It is short, but the length reflects under-specification rather than conciseness; the entire content is a duplicated URL string and the parenthetical repeat adds nothing. No front-loaded purpose statement exists.

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?

With no annotations, no output schema, and a description consisting solely of the endpoint path, the definition is wholly inadequate for a relationship-list tool. An agent has no basis to call it correctly or know what it returns.

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 schema already documents both 'id' and 'limit'. The description adds no parameter meaning beyond echoing '{id}' in the path, so the baseline 3 applies.

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

Purpose2/5

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

The description is only the raw HTTP path 'GET /v1/merchantIds/{id}/relationships/certificates' repeated twice, which restates the tool name rather than explaining what the tool does. An agent cannot tell from this why it would fetch certificates for a merchant ID nor how it differs from the very similar sibling merchant_ids_certificates_get_to_many_related.

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 when-to-use, when-not-to-use, or alternative guidance is present. The existence of the near-identical sibling merchant_ids_certificates_get_to_many_related makes disambiguation essential, and the description offers nothing to distinguish them.

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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