# asc_post_subscription_localization

Create a SubscriptionLocalization for ONE subscription + ONE locale. Required: subscriptionId + name (30 chars max) + locale. Optional: description (45 chars max). The (subscription, locale) pair must be unique. Locale is immutable post-create.

Agent View of the PolicyLayer registry record for `asc_post_subscription_localization`. HTML page: https://policylayer.com/tools/io-github-akoskomuves-appstoreconnect-mcp/asc-post-subscription-localization

## Facts

- Tool: `asc_post_subscription_localization`
- Server: Appstoreconnect Mcp (`@akoskomuves/appstoreconnect-mcp`) — https://policylayer.com/tools/io-github-akoskomuves-appstoreconnect-mcp.md
- Install: `npx -y @akoskomuves/appstoreconnect-mcp`
- Homepage: https://github.com/akoskomuves/appstoreconnect-mcp
- Risk category: Write (Medium risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "asc_post_subscription_localization",
    "arguments": {}
  }
}
```

## Why asc_post_subscription_localization is rated Medium

This tool creates new subscription localization data in App Store Connect, which is reversible (can be deleted via sibling tools like asc_delete_app_custom_product_page_localization). The impact is limited to metadata creation with character limits (30 for name, 45 for description). While it affects subscription configuration, it does not delete data irreversibly, move money, or execute arbitrary code.

From the tool's own definition: "Tool name includes 'post' and description states 'Create a SubscriptionLocalization'; this is a create operation that modifies data (adds a new localization record for a subscription)."

## Use case

AI agents use asc_post_subscription_localization to create or update resources in Appstoreconnect Mcp, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Appstoreconnect Mcp environment.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Appstoreconnect Mcp:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "asc_post_subscription_localization": {
      "limits": [
        {
          "counter": "asc_post_subscription_localization_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on Appstoreconnect Mcp (277)

- `asc_delete_accessibility_declaration` — Destructive — https://policylayer.com/tools/io-github-akoskomuves-appstoreconnect-mcp/asc-delete-accessibility-declaration.md
- `asc_delete_alternative_distribution_domain` — Destructive — https://policylayer.com/tools/io-github-akoskomuves-appstoreconnect-mcp/asc-delete-alternative-distribution-domain.md
- `asc_delete_alternative_distribution_key` — Destructive — https://policylayer.com/tools/io-github-akoskomuves-appstoreconnect-mcp/asc-delete-alternative-distribution-key.md
- `asc_delete_analytics_report_request` — Destructive — https://policylayer.com/tools/io-github-akoskomuves-appstoreconnect-mcp/asc-delete-analytics-report-request.md
- `asc_delete_app_custom_product_page` — Destructive — https://policylayer.com/tools/io-github-akoskomuves-appstoreconnect-mcp/asc-delete-app-custom-product-page.md
- `asc_delete_app_custom_product_page_localization` — Destructive — https://policylayer.com/tools/io-github-akoskomuves-appstoreconnect-mcp/asc-delete-app-custom-product-page-localization.md
- `asc_delete_app_custom_product_page_version` — Destructive — https://policylayer.com/tools/io-github-akoskomuves-appstoreconnect-mcp/asc-delete-app-custom-product-page-version.md
- `asc_delete_app_event` — Destructive — https://policylayer.com/tools/io-github-akoskomuves-appstoreconnect-mcp/asc-delete-app-event.md
- `asc_delete_app_event_localization` — Destructive — https://policylayer.com/tools/io-github-akoskomuves-appstoreconnect-mcp/asc-delete-app-event-localization.md
- `asc_delete_app_event_screenshot` — Destructive — https://policylayer.com/tools/io-github-akoskomuves-appstoreconnect-mcp/asc-delete-app-event-screenshot.md
- `asc_delete_app_event_video_clip` — Destructive — https://policylayer.com/tools/io-github-akoskomuves-appstoreconnect-mcp/asc-delete-app-event-video-clip.md
- `asc_delete_app_info_localization` — Destructive — https://policylayer.com/tools/io-github-akoskomuves-appstoreconnect-mcp/asc-delete-app-info-localization.md
- `asc_delete_app_preview` — Destructive — https://policylayer.com/tools/io-github-akoskomuves-appstoreconnect-mcp/asc-delete-app-preview.md
- `asc_delete_app_preview_set` — Destructive — https://policylayer.com/tools/io-github-akoskomuves-appstoreconnect-mcp/asc-delete-app-preview-set.md
- `asc_delete_app_screenshot` — Destructive — https://policylayer.com/tools/io-github-akoskomuves-appstoreconnect-mcp/asc-delete-app-screenshot.md
- `asc_delete_app_screenshot_set` — Destructive — https://policylayer.com/tools/io-github-akoskomuves-appstoreconnect-mcp/asc-delete-app-screenshot-set.md
- `asc_delete_app_store_version` — Destructive — https://policylayer.com/tools/io-github-akoskomuves-appstoreconnect-mcp/asc-delete-app-store-version.md
- `asc_delete_app_store_version_localization` — Destructive — https://policylayer.com/tools/io-github-akoskomuves-appstoreconnect-mcp/asc-delete-app-store-version-localization.md
- `asc_delete_app_store_version_phased_release` — Destructive — https://policylayer.com/tools/io-github-akoskomuves-appstoreconnect-mcp/asc-delete-app-store-version-phased-release.md
- `asc_delete_beta_app_localization` — Destructive — https://policylayer.com/tools/io-github-akoskomuves-appstoreconnect-mcp/asc-delete-beta-app-localization.md
- `asc_delete_beta_build_localization` — Destructive — https://policylayer.com/tools/io-github-akoskomuves-appstoreconnect-mcp/asc-delete-beta-build-localization.md
- `asc_delete_beta_feedback_crash_submission` — Destructive — https://policylayer.com/tools/io-github-akoskomuves-appstoreconnect-mcp/asc-delete-beta-feedback-crash-submission.md
- `asc_delete_beta_feedback_screenshot_submission` — Destructive — https://policylayer.com/tools/io-github-akoskomuves-appstoreconnect-mcp/asc-delete-beta-feedback-screenshot-submission.md
- `asc_delete_beta_group` — Destructive — https://policylayer.com/tools/io-github-akoskomuves-appstoreconnect-mcp/asc-delete-beta-group.md
- `asc_delete_beta_recruitment_criterion` — Destructive — https://policylayer.com/tools/io-github-akoskomuves-appstoreconnect-mcp/asc-delete-beta-recruitment-criterion.md
- `asc_delete_beta_tester` — Destructive — https://policylayer.com/tools/io-github-akoskomuves-appstoreconnect-mcp/asc-delete-beta-tester.md
- `asc_delete_customer_review_response` — Destructive — https://policylayer.com/tools/io-github-akoskomuves-appstoreconnect-mcp/asc-delete-customer-review-response.md
- `asc_delete_experiment_treatment` — Destructive — https://policylayer.com/tools/io-github-akoskomuves-appstoreconnect-mcp/asc-delete-experiment-treatment.md
- `asc_delete_iap_localization` — Destructive — https://policylayer.com/tools/io-github-akoskomuves-appstoreconnect-mcp/asc-delete-iap-localization.md
- `asc_delete_marketplace_search_detail` — Destructive — https://policylayer.com/tools/io-github-akoskomuves-appstoreconnect-mcp/asc-delete-marketplace-search-detail.md
- …and 247 more: https://policylayer.com/tools/io-github-akoskomuves-appstoreconnect-mcp.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=io-github-akoskomuves-appstoreconnect-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/io-github-akoskomuves-appstoreconnect-mcp