Capture the full ARIA accessibility snapshot of the current page. Returns the complete page structure with [ref=X] markers. Use this when you need to see all elements on the page \u2014 action tools (click, type, etc.) only return a compact diff of what changed.
AI agents call browser_snapshot to retrieve information from Playwright Autopilot without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool captures and returns page structure snapshots. It performs no side effects, executes no code, modifies no data, and triggers no external operations. It is a pure information retrieval operation analogous to inspecting the current state of a web page. The sibling tools (click, fill_form, navigate) perform write/execute actions, but browser_snapshot itself only reads.
From the tool's definition "Capture the full ARIA accessibility snapshot of the current page. Returns the complete page structure" — describes read-only retrieval of DOM/accessibility data without modification or execution of actions.
Documented attack patterns abuse exactly the kind of access browser_snapshot gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Playwright Autopilot, and nothing reaches the server without passing your rules. This is the rule we recommend for browser_snapshot:
{
"version": "1",
"default": "deny",
"tools": {
"browser_snapshot": {}
}
}browser_snapshot is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Capture the full ARIA accessibility snapshot of the current page. Returns the complete page structure with [ref=X] markers. Use this when you need to see all elements on the page \u2014 action tools (click, type, etc.) only return a compact diff of what changed. It is categorised as a Read tool in the Playwright Autopilot MCP Server, which means it retrieves data without modifying state.
Register the Playwright Autopilot MCP server in PolicyLayer and add a rule for browser_snapshot: 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 Playwright Autopilot. Nothing to install.
browser_snapshot is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the browser_snapshot 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 browser_snapshot. 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.
browser_snapshot is provided by the Playwright Autopilot MCP server (kaizen-yutani/playwright-autopilot). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Playwright Autopilot, 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.
51 Playwright Autopilot tools catalogued and risk-classified — across an index of 43,000+ MCP servers.