BYOB TOOLS

33 tools from the Byob MCP Server, categorised by risk level.

// ALL 33 BYOB TOOLS

READ 12 tools

Read browser_start_record_network Begin recording HTTP/HTTPS requests, responses, bodies, timings, and Read browser_download_images Open a URL, scroll to trigger lazy loaders, then save every <img> on the page (plus og:image / twitter:imag... Read browser_extract_table Walk every <table> matching a CSS selector (default Read browser_get_console_logs Read recent console.log/info/warn/error/debug entries plus uncaught JavaScript Read browser_get_cookies Returns cookies (incl. value) for a given domain or URL. Useful for Read browser_get_html Return outerHTML (default) or innerHTML of the element matching Read browser_get_performance Get page performance metrics — Core Web Vitals (LCP/CLS/INP/FCP/TTFB) and Read browser_get_storage Read Read browser_list_tabs Returns id, url, title, active flag, and windowId for every open tab. Read browser_read Read full content from a webpage using the user Read browser_read_markdown Open a URL or use an existing tab and convert the main article body to markdown using Read browser_screenshot Capture a screenshot of a webpage and save it to disk. Returns the file PATH

WRITE 3 tools

Write browser_close_tab Close a browser tab by tabId. Returns tab_closed if the tab does not exist. Write browser_print_pdf Save the current page as a PDF file. Returns the file PATH (not data) — read Write browser_set_cookies Write a cookie to the user

EXECUTE 18 tools

Execute browser_emulate_device Emulate a device viewport. Use Execute browser_eval Run arbitrary JavaScript in a browser tab via CDP Runtime.evaluate. Execute browser_hover Move the mouse over the element matching the given CSS selector to trigger Execute browser_intercept_start Start a request-interception session in a tab. Provide an array of Execute browser_intercept_stop Stop a Execute browser_navigate Open a new tab (or reuse a given tabId) and navigate to the URL. Execute browser_stop_record_network Stop a recording previously started with browser_start_record_network and Execute browser_wait_for Block until a CSS selector reaches the requested state (visible / hidden / attached / detached). Execute browser_go_back Go back one step in the browser history of the given tab and wait for the new page Execute browser_go_forward Go forward one step in the browser history of the given tab and wait for the new Execute browser_click Click an element matching the given CSS selector in the active browser tab. Execute browser_drag Drag the mouse from Execute browser_press_key Send a single keyboard event to the page (e.g. Enter, Escape, Tab, F5, ArrowDown, Execute browser_scroll Scroll the page to a position, an element, or absolute Y coordinate. Execute browser_select Choose an <option> in a native <select> by exactly one of value, label, or index. Execute browser_switch_tab Bring the given tab to the foreground (focus its window + make it active). Execute browser_type Focus the element matching the selector, then type the given text. Execute browser_upload_file Upload one or more local files to a

// FAQ

How many tools does the Byob MCP server have? +

The Byob MCP server exposes 33 tools across 3 categories: Read, Write, Execute.

How do I enforce policies on Byob tools? +

Route the Byob server through the PolicyLayer gateway. Define allow, deny, or approval rules per tool in the dashboard; they are enforced on every call before it reaches the server.

What risk categories do Byob tools fall into? +

Byob tools are categorised as Read (12), Write (3), Execute (18). Each category has a recommended default policy.

Enforce policy on every Byob tool call.

Start from Byob, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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