Start recording the browser session as a video. This tool begins capturing all browser interactions as a WebM video file. It works by recycling the browser context with video recording enabled. **Session state preservation:** Cookies and localStorage are automatically saved and restored when th...
Part of the Playwright Stealth MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.
AI agents invoke browser_start_recording to trigger processes or run actions in Playwright Stealth. Execute operations can have side effects beyond the immediate call -- triggering builds, sending notifications, or starting workflows. Rate limits and argument validation are essential to prevent runaway execution.
browser_start_recording can trigger processes with real-world consequences. An uncontrolled agent might start dozens of builds, send mass notifications, or kick off expensive compute jobs. Intercept enforces rate limits and validates arguments to keep execution within safe bounds.
Execute tools trigger processes. Rate-limit and validate arguments to prevent unintended side effects.
tools:
browser_start_recording:
rules:
- action: allow
rate_limit:
max: 10
window: 60
validate:
required_args: trueSee the full Playwright Stealth policy for all 6 tools.
Agents calling execute-class tools like browser_start_recording have been implicated in these attack patterns. Read the full case and prevention policy for each:
Other tools in the Execute risk category across the catalogue. The same policy patterns (rate-limit, validate) apply to each.
browser_start_recording is one of the high-risk operations in Playwright Stealth. For the full severity-focused view — only the high-risk tools with their recommended policies — see the breakdown for this server, or browse all high-risk tools across every MCP server.
Start recording the browser session as a video. This tool begins capturing all browser interactions as a WebM video file. It works by recycling the browser context with video recording enabled. **Session state preservation:** Cookies and localStorage are automatically saved and restored when the context is recycled. sessionStorage for the current origin is also preserved on a best-effort basis. In rare cases involving multiple origins, some state may not be restored — if you experience authentication issues, log in again. **Behavior when already recording:** If recording is already active, the current recording will be stopped (saving the video) and a new recording will begin. **The video is NOT available until you call `browser_stop_recording`.** Playwright only finalizes the video file when the recording context is closed. **Returns:** - Confirmation that recording has started - The URL the browser was previously on (if any) — the browser navigates back to it automatically. It is categorised as a Execute tool in the Playwright Stealth MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Add a rule in your Intercept YAML policy under the tools section for browser_start_recording. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Playwright Stealth MCP server.
browser_start_recording 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_start_recording rule in your Intercept 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 Intercept policy for browser_start_recording. 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_start_recording is provided by the Playwright Stealth MCP server (playwright-stealth-mcp-server). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Open source. One binary. Zero dependencies.
npx -y @policylayer/intercept