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DimensionZeroTokenRecord once, automate forever. Lightweight MCP for AI agent browser automation with trajectory recording and low-token script replay.Playwright MCPMicrosoft's official Playwright-based browser automation MCP server
FMRS54 / 100 · D78 / 100 · B
Reliability10 / 2013 / 20
Security and permissions8 / 2012 / 20
Maintenance12 / 2018 / 20
Documentation13 / 2018 / 20
Setup experience11 / 2017 / 20
Best for
  • Record-once, run-forever scheduled or repetitive tasks such as daily logins and timed scraping
  • Agent setups that want lower token cost instead of step-by-step LLM reasoning on every run
  • Projects needing rich browser primitives: multi-tab, iframes, file upload/download, drag and drop
  • Automation flows that need element fingerprints and adaptive re-location to survive site redesigns
  • Scenarios where an AI assistant needs to actually drive a browser to complete a task
  • Web automation testing and end-to-end verification
Not for
  • Environments that cannot run Playwright/Chromium or install a browser
  • Clients that rely only on stdio while needing browser state across calls (the README states command mode spawns a new process per tool call, destroying the browser instance)
  • Production-critical systems requiring official commercial support or an SLA
  • Setups that do not accept local SQLite persistence of trajectories, screenshots and sessions
  • Simple static-text scraping (a lightweight scraper is a better fit)
  • Environments sensitive to browser resource usage that can't run a full browser engine
Required permissions
  • Local filesystem read/write (SQLite database zerotoken.db, upload and download paths)
  • Network access (target websites, Playwright/Chromium download)
  • Launch and control a local Chromium browser process
  • In OpenClaw, run a local HTTP service on a listening port (default 8000)
  • Requires installing and running a browser engine (Chromium/Firefox/WebKit) locally or on a server
  • browser_navigate can visit any URL; browser_evaluate can run arbitrary JavaScript in the page context
Risks and side effects
  • Scripts act as a real browser and perform clicks, typing, uploads and downloads, so mistakes can change data or submit forms unintentionally
  • Trajectories store page state and screenshots (base64 images may contain sensitive data) on disk in SQLite, creating privacy and credential-leak risk
  • Fingerprint masking via browser_init(stealth=true) may violate target sites' terms of service
  • Depends on target page structure: selector failure remains the main instability factor (60% per the README), so scripts may break after redesigns
  • HTTP mode listens on 0.0.0.0 by default and can be called by others if exposed to untrusted networks
  • browser_evaluate executing arbitrary scripts carries risk if a malicious page is visited — restrict to trusted sites or an isolated environment
  • Long-running browser instances consume significant memory and CPU
Supported clientsOpenClaw, CursorClaude Desktop, Claude Code, VS Code, Cursor, Windsurf, JetBrains IDEs, Zed, Cline, Amp, Kiro, LM Studio, Antigravity, Goose
Tools3310