Type text into a Windows application window.
AI agents invoke app_type to trigger actions in Claude Pascal MCP Server. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.
This tool executes keyboard input actions on a Windows application, which constitutes an external operation with effects that depend on where and what text is typed. It could trigger form submissions, commands, or other application behaviors, making it an Execute-category action with high severity due to potential for misuse across any running application.
From the tool's definition Type text into a Windows application window
Documented attack patterns abuse exactly the kind of access app_type gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Claude Pascal MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for app_type:
{
"version": "1",
"default": "deny",
"tools": {
"app_type": {
"limits": [
{
"counter": "app_type_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}app_type stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.
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Type text into a Windows application window. It is categorised as a Execute tool in the Claude Pascal MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Claude Pascal MCP Server MCP server in PolicyLayer and add a rule for app_type: 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 Claude Pascal MCP Server. Nothing to install.
app_type is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the app_type 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.
Set action: deny in the PolicyLayer policy for app_type. 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.
app_type is provided by the Claude Pascal MCP Server MCP server (tina4stack/claude-pascal-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Claude Pascal MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
53 Claude Pascal MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.