intercept_route
A execute tool on the Playwright MCP server.
This record as markdown: /tools/alexrwilliam-playwright-mcp-server/intercept-route.md
What intercept_route does on Playwright MCP Server
AI agents invoke intercept_route to trigger actions in Playwright 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.
Why intercept_route is rated High
In Playwright, 'intercept_route' (route interception) allows intercepting, modifying, or blocking network requests made by the browser. This constitutes an Execute-level action as it triggers external operations and can manipulate network traffic.
From the tool's definition Tool name 'intercept_route' on a Playwright browser automation server; description is empty/uninformative.
Attacks that exploit this kind of access
The rule that runs intercept_route safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Playwright MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For intercept_route, this is the rule to start with:
intercept_route 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.
The button opens the PolicyLayer dashboard: create your workspace, connect Playwright MCP Server, apply this rule, and every intercept_route call is checked against it from then on.
Questions about intercept_route
intercept_route is a execute tool on the Playwright MCP Server MCP server. It is categorised as a Execute tool in the Playwright MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Playwright MCP Server MCP server in PolicyLayer and add a rule for intercept_route: 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 MCP Server. Nothing to install.
intercept_route 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 intercept_route 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 intercept_route. 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.
intercept_route is provided by the Playwright MCP Server MCP server (alexrwilliam/playwright-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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