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erayendes

Heimdall App Store Connect MCP

beta_app_localizations__update

Idempotent

Update beta app localization details such as description, marketing URL, feedback email, and privacy policy URL using the App Store Connect API.

Instructions

Update a beta app localization. [PATCH /v1/betaAppLocalizations/{id}]

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
idYesResource identifier.
bodyYesJSON:API request body (Apple schema: BetaAppLocalizationUpdateRequest).
Behavior3/5

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

Annotations already declare idempotentHint=true and destructiveHint=false. The description adds no extra behavioral context beyond stating 'Update'. With annotations present, the bar is lower, and the description does not contradict but also does not add significant value.

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

Conciseness4/5

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

Single sentence plus endpoint reference. Efficient and front-loaded. No unnecessary words.

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

Completeness3/5

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

No output schema, and the description does not explain what the response contains or that the update is partial. Given the nested schema with optional attributes, some extra context would be helpful, but annotations cover some safety aspects.

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 baseline is 3. The description does not add meaning beyond what the schema provides; it only mentions the endpoint.

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 states 'Update a beta app localization', which uses a specific verb and resource. It clearly distinguishes this tool from siblings like create, delete, get, and list.

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 guidance on when to use this tool vs alternatives (e.g., when to update vs create). The description lacks context about prerequisites or conditions.

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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