Capture a URL screenshot in PNG format (for message match evaluation)
AI agents invoke google_ads_capture_screenshot to trigger actions in Mureo. 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 an external operation (loading and rendering a URL in a headless browser or screenshot service) whose effects depend on the URL argument. It is not a passive read of stored data; it triggers a network request and browser execution to capture a rendered page, placing it in the Execute category.
From the tool's definition Capture a URL screenshot in PNG format — actively fetches a URL and renders it, triggering an external browser/rendering operation
Documented attack patterns abuse exactly the kind of access google_ads_capture_screenshot gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Mureo, and nothing reaches the server without passing your rules. This is the rule we recommend for google_ads_capture_screenshot:
{
"version": "1",
"default": "deny",
"tools": {
"google_ads_capture_screenshot": {
"limits": [
{
"counter": "google_ads_capture_screenshot_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}google_ads_capture_screenshot 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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Capture a URL screenshot in PNG format (for message match evaluation). It is categorised as a Execute tool in the Mureo MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Mureo MCP server in PolicyLayer and add a rule for google_ads_capture_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 Mureo. Nothing to install.
google_ads_capture_screenshot 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 google_ads_capture_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.
Set action: deny in the PolicyLayer policy for google_ads_capture_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.
google_ads_capture_screenshot is provided by the Mureo MCP server (logly/mureo). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Mureo, 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.
185 Mureo tools catalogued and risk-classified — across an index of 43,000+ MCP servers.