AI agents invoke browser_navigate_back to trigger actions in Playwright. 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.
Browser navigation (going back) is an Execute action—it triggers an external operation (browser history navigation) whose side effects depend on context. While not destructive or financial, it modifies browser state and could be misused to navigate to unexpected pages or trigger unwanted scripts.
From the tool's definition Tool name is 'browser_navigate_back' on a Playwright browser automation server; sibling tools include browser_click, browser_drag, and browser_console_messages, confirming this server controls browser actions.
Documented attack patterns abuse exactly the kind of access browser_navigate_back gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Playwright, and nothing reaches the server without passing your rules. This is the rule we recommend for browser_navigate_back:
{
"version": "1",
"default": "deny",
"tools": {
"browser_navigate_back": {
"limits": [
{
"counter": "browser_navigate_back_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}browser_navigate_back 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.
Free to start. No card required.
browser_navigate_back. It is categorised as a Execute tool in the Playwright MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Playwright MCP server in PolicyLayer and add a rule for browser_navigate_back: 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. Nothing to install.
browser_navigate_back 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 browser_navigate_back 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_navigate_back. 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_navigate_back is provided by the Playwright MCP server (@playwright/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Playwright, 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.
68 Playwright tools catalogued and risk-classified — across an index of 43,000+ MCP servers.