asc_post_app_screenshot

SERVERAppstoreconnect Mcp SOURCE@akoskomuves/appstoreconnect-mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-akoskomuves-appstoreconnect-mcp/asc-post-app-screenshot.md

WHAT IT DOES

What asc_post_app_screenshot does on Appstoreconnect Mcp

AI agents use asc_post_app_screenshot 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.

RISK

Why asc_post_app_screenshot is rated Medium

The tool creates a new screenshot resource in App Store Connect, which is a reversible data modification. While it prepares for file upload, the actual creation of the resource constitutes a Write operation. It does not execute arbitrary code, delete data, or involve financial transactions. Severity is medium because misuse could clutter the app's screenshot gallery, but uploads are generally reversible via deletion.

From the tool's definition Tool 'reserves an AppScreenshot' and 'returns the created resource', indicating creation of new data in App Store Connect. Description explicitly states it's 'step 1 of the three-step upload flow' for file upload, a reversible write operation.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs asc_post_app_screenshot safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Appstoreconnect Mcp, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For asc_post_app_screenshot, this is the rule to start with:

asc_post_app_screenshot Rate-limited

asc_post_app_screenshot stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "asc_post_app_screenshot": {
      "limits": [
        {
          "counter": "asc_post_app_screenshot_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Appstoreconnect Mcp, apply this rule, and every asc_post_app_screenshot call is checked against it from then on.

FAQ

Questions about asc_post_app_screenshot

What does the asc_post_app_screenshot tool do? +

RAW step 1 of the three-step upload flow. Reserves an AppScreenshot under a set with fileName + fileSize, and returns the created resource with uploadOperations[] populated. Each uploadOperation has method=PUT + url + length + offset + requestHeaders for one chunk of the file. Use asc_upload_asset_chunk to PUT each, then asc_patch_app_screenshot to commit. Most callers should use the composite asc_upload_screenshot instead — this tool exists as an escape hatch for manual control. It is categorised as a Write tool in the Appstoreconnect Mcp MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on asc_post_app_screenshot? +

Register the Appstoreconnect MCP server in PolicyLayer and add a rule for asc_post_app_screenshot: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Appstoreconnect Mcp. Nothing to install.

What risk level is asc_post_app_screenshot? +

asc_post_app_screenshot is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit asc_post_app_screenshot? +

Yes. Add a rate_limit block to the asc_post_app_screenshot rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block asc_post_app_screenshot completely? +

Set action: deny in the PolicyLayer policy for asc_post_app_screenshot. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides asc_post_app_screenshot? +

asc_post_app_screenshot is provided by the Appstoreconnect MCP server (@akoskomuves/appstoreconnect-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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