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app-store-connect-mcp

app-store-connect-mcp

by devinwang
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TypeScript
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beta_build_localizations_update_instance

Update a beta build localization by ID to change localized metadata, such as TestFlight what's new text, for a specific build and locale.

Instructions

PATCH /v1/betaBuildLocalizations/{id} (PATCH /v1/betaBuildLocalizations/{id}) Body shape: see OpenAPI components.schemas.BetaBuildLocalizationUpdateRequest 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": {
      "id": "<id>",
      "body": "<body>"
    },
    "name": "beta_build_localizations_update_instance"
  }
}

Input Schema

NameRequiredDescriptionDefault
idYesthe id of the requested resource
bodyYesJSON body. Shape: components.schemas.BetaBuildLocalizationUpdateRequest.

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.5.0

TDQS

C2.2/5.0
Behavior2/5

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

With no annotations provided, the description carries the full behavioral burden, yet it discloses nothing beyond the PATCH verb. It does not state that this is a partial update, what fields are mutable, what permissions are required, or any side effects, deferring entirely to an external OpenAPI schema reference.

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?

The description is short but wastes its only sentence duplicating the identical path twice in parentheses. It is front-loaded with a URL rather than a statement of purpose, so brevity here reflects under-specification rather than efficient concision.

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 mutation tool with no annotations, no output schema, and a nested JSON:API request body, the description is inadequate; it outsources all substantive information to an external schema document the agent may not have. Nothing about the update's scope or effect is conveyed.

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% and both parameters (id, body) are documented in the schema, so the baseline of 3 applies. The description adds no parameter meaning beyond pointing to the same components.schemas reference already cited in the body parameter's schema description.

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 only restates the HTTP endpoint (PATCH /v1/betaBuildLocalizations/{id}) with no semantic explanation of what a beta build localization is or what updating one accomplishes. It is essentially the tool name rendered as a REST path, offering no differentiation from the many sibling update_instance tools.

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 versus alternatives such as beta_build_localizations_create_instance or beta_build_localizations_delete_instance, nor any stated prerequisites. The agent is left to 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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