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app-store-connect-mcp

app-store-connect-mcp

by devinwang
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TypeScript
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beta_groups_create_instance

Create a beta group in App Store Connect to organize TestFlight testers and manage their access to beta builds.

Instructions

POST /v1/betaGroups (POST /v1/betaGroups) Body shape: see OpenAPI components.schemas.BetaGroupCreateRequest for the full JSON:API envelope.

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": {
      "body": "<body>"
    },
    "name": "beta_groups_create_instance"
  }
}

Input Schema

NameRequiredDescriptionDefault
bodyYesJSON body. Shape: components.schemas.BetaGroupCreateRequest.

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.5.0

TDQS

C2.3/5.0
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 about side effects, required auth/scopes, idempotency, or what happens on success. Pointing at an external OpenAPI component for the body shape is structural, not behavioral, leaving the agent with zero behavioral context for a mutating call.

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

Conciseness3/5

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

It is short and front-loaded, but wastes words by repeating 'POST /v1/betaGroups' twice in the same sentence. It is brief because it is under-specified rather than because it is efficient.

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

Completeness2/5

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

For a mutating tool with a nested JSON:API envelope body, no annotations, and no output schema, the description is far too thin. It offloads the only substantive content to an external OpenAPI document the agent may not have, leaving the request shape and behavior effectively undocumented.

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?

With one parameter and 100% schema description coverage, the schema already documents the body and names components.schemas.BetaGroupCreateRequest. The description repeats that same reference verbatim, adding no syntax, field-level, or envelope guidance beyond the schema.

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

Purpose3/5

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

The description gives only the HTTP verb and path (POST /v1/betaGroups), which lets an agent infer 'create a beta group' but never states the purpose in plain language or explains what a beta group is. It is essentially a restatement of the endpoint rather than a description, and it does nothing to separate this tool from sibling create tools like beta_recruitment_criteria_create_instance.

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?

There is no guidance on when to use this tool, what prerequisites exist, or how it relates to alternatives such as beta_groups_update_instance or beta_groups_get_collection. The agent must infer everything from the name.

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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