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Heimdall App Store Connect MCP

by erayendes
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TypeScript

alternative_distribution_packages__get

Read-onlyIdempotent

Retrieve a single alternative distribution package by its ID. Use the include parameter to fetch related versions in the same call, reducing extra API requests.

Instructions

Read one alternative distribution package by ID. [GET /v1/alternativeDistributionPackages/{id}]

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
idYesID from the matching list call.
includeNocomma-separated list of relationships to include Pull related records in the same call. Without it, checking a relationship costs one extra call per row returned.
fields_alternativeDistributionPackagesNothe fields to include for returned resources of type alternativeDistributionPackages Return only these attributes. A full row set can exceed 200 KB.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changedv2.0.1
    • addedInput schema / properties / id / description
      Added value: +"ID from the matching list call."
  2. Changed3 schema fields changedv2.0.0
    • addedInput schema / properties / fields_alternativeDistributionPackages
      Added value: +{
+  "description": "the fields to include for returned resources of type alternativeDistributionPackages Return only these attributes. A full row set can exceed 200 KB.",
+  "items": {
+    "enum": [
+      "sourceFileChecksum",
+      "versions"
+    ],
+    "type": "string"
+  },
+  "type": "array"
+}
    • removedInput schema / properties / id / description
      Removed value: -"Resource identifier."
    • changedInput schema / properties / include / description
      Previous value: -"comma-separated list of relationships to include"New value: +"comma-separated list of relationships to include Pull related records in the same call. Without it, checking a relationship costs one extra call per row returned."
  3. First observedv1.3.0

TDQS

A3.7/5.0
Behavior3/5

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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the safety profile is known. The description adds the endpoint and ID-based retrieval, but no additional behavioral details such as rate limits, auth requirements, or response characteristics. It is consistent with the annotations.

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 a single sentence plus the HTTP endpoint, with no filler or redundant content. Every word contributes to understanding the tool's core function.

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

Completeness5/5

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

For a simple read-by-ID tool, the description, combined with the rich schema and safety annotations, is complete. The description states the function, the schema explains all parameters, and annotations cover side effects. No output schema is provided, but for a GET resource the return is implied.

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%, with all three parameters (id, include, fields_alternativeDistributionPackages) having descriptive text. The description itself does not add parameter-level meaning, so the baseline of 3 applies.

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 the specific verb 'Read' and identifies the resource as 'one alternative distribution package by ID', making the tool's purpose unambiguous. It clearly distinguishes this from creation or listing tools among the siblings, even without naming alternatives.

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 explicit guidance on when to use this tool versus alternatives like listing packages or getting package versions. It implies the prerequisite of having an ID but does not clarify where the ID comes from or when not to use this tool.

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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