ZeroToken is an MIT-licensed, community-maintained lightweight browser automation MCP engine built around record-once, replay-forever: trajectory recording plus deterministic script replay cuts token usage on repetitive tasks. It offers 26 browser_* primitives, multi-tab and iframe management, SmartSelector/SmartWait/ErrorRecovery stability layers, adaptive element fingerprint re-location, an exploration recording mode, SQLite persistence, and both stdio and Streamable HTTP transports. OpenClaw users must use HTTP mode to keep browser state, and must install Playwright Chromium themselves. It is not an official product and carries no commercial support; users are responsible for target-site terms and local data security.
ZeroToken is a lightweight browser automation MCP engine for AI agents. The agent drives the browser step by step in ReAct style through atomic MCP tools, while the system records a full trajectory (page state, screenshots, results, and fuzzy points). Trajectories can be exported as AI-friendly prompts or converted into deterministic replayable scripts, so repeated runs need no step-by-step LLM reasoning and consume far fewer tokens. It uses a five-layer architecture (Transport → Handler → Service → Domain → Repository/Infrastructure) with Pydantic v2 models, stores scripts, trajectories, sessions, fingerprints, bindings and runtime state in SQLite, and drives a real browser through Playwright/Chromium.
{
"mcpServers": {
"zerotoken": {
"url": "http://localhost:8000/mcp"
}
}
}