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App Store Connect MCP Server

by concavegit

update_app_store_version_localization

Modify app store listing details like description, keywords, or what's new text for specific language versions to keep store content current.

Instructions

Update a specific field in an app store version localization

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
localizationIdYesThe ID of the app store version localization to update
fieldYesThe field to update
valueYesThe new value for the field

Implementation Reference

  • The main handler function that performs the API call to update a specific field (description, keywords, etc.) in an App Store version localization using the AppStoreConnectClient. Includes input validation and field validation.
    async updateAppStoreVersionLocalization(args: {
      localizationId: string;
      field: AppStoreVersionLocalizationField;
      value: string;
    }): Promise<AppStoreVersionLocalizationResponse> {
      const { localizationId, field, value } = args;
      
      validateRequired(args, ['localizationId', 'field', 'value']);
      
      // Validate field
      const validFields: AppStoreVersionLocalizationField[] = [
        'description', 'keywords', 'marketingUrl', 
        'promotionalText', 'supportUrl', 'whatsNew'
      ];
      
      if (!validFields.includes(field)) {
        throw new Error(`Invalid field: ${field}. Must be one of: ${validFields.join(', ')}`);
      }
      
      const requestData: AppStoreVersionLocalizationUpdateRequest = {
        data: {
          type: 'appStoreVersionLocalizations',
          id: localizationId,
          attributes: {
            [field]: value
          }
        }
      };
      
      return this.client.patch<AppStoreVersionLocalizationResponse>(
        `/appStoreVersionLocalizations/${localizationId}`,
        requestData
      );
    }

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observed

TDQS

B3.3/5.0
Behavior2/5

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

No annotations exist, so the description bears full burden. It only says 'update a specific field' but does not disclose whether other fields are affected, required permissions, idempotency, or possible side effects.

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 with no extraneous words, efficiently conveying the core action.

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?

For a simple update tool with 3 clear parameters, the description is minimally adequate but lacks usage guidance and behavioral context, leaving gaps for an AI agent.

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 coverage is 100%—all parameters have descriptions. The description adds no additional meaning beyond the schema, so baseline 3 is appropriate.

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 clearly states the verb 'Update' and the resource 'app store version localization', and specifies it updates a specific field, distinguishing it from list/get/create siblings.

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, no prerequisites or when-not-to-use conditions are provided.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.