Item logo image for Taprun — Local-First Browser MCP

Taprun — Local-First Browser MCP

https://taprun.dev/
Item media 1 (screenshot) for Taprun — Local-First Browser MCP

Overview

Your agent's action layer in your own logged-in Chrome — the login/compliance last 20% APIs can't reach. Zero-token replay.

# Tap — Browser Automation MCP for Your Real Browser Tap is a local-first MCP browser-automation runtime. Claude Code, Cursor, Continue, Windsurf, or any MCP-compatible AI agent can drive your real Chrome with your own logged-in sessions — no cloud credentials, no per-step LLM cost, no vendor lock-in. AI participates at compile time only: saved plans replay deterministically at zero LLM token cost. ## Why Tap (vs. Stagehand / Browserbase / Playwright-MCP / BrowserMCP) Every cloud-first browser-automation MCP forces a tradeoff: ship your credentials to someone else's server, OR re-run an LLM on every step ($$$). Tap takes neither: - Runs in YOUR browser — your existing Chrome session with all your cookies, 2FA state, single-sign-on tokens. Credentials never cross a trust boundary; the extension only relays plan steps to the local Tap binary on your machine. - Zero-token replay — the AI agent compiles a plan ONCE into an inspectable JSON artifact. Every subsequent run is pure data + dispatch. No vision loop, no accessibility-tree re-parse, no per-execution tokenbill. - Plans are diff-able JSON — version-controllable, testable, shareable. Not opaque generated code, not LLM scratch-state. ## Features - MCP-native — drop-in for any MCP-compatible host (Claude Code, Cursor, Continue, Windsurf, Cline). 4 meta verbs: capture / verify / mark / run. - Authenticated by default — reuses your live Chrome cookies via Chrome Native Messaging. Same trust model as a browser bookmarklet; no localhost ports, no OS service. - Compile-time AI, runtime zero AI — the AI generates the plan once; runtime is deterministic. Predictable cost, predictable behavior, reproducible failures. - Composite plans — one plan can call other plans (op:tap composition). `tap verify` recursively checks composite plans against live substrates without side-effects.

Details

  • Version
    0.29.2
  • Updated
    August 3, 2026
  • Size
    338KiB
  • Languages
    English
  • Developer
    Website
    Email
    support@taprun.dev
  • Non-trader
    This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

Manage extensions and learn how they're being used in your organization
The developer has disclosed that it will not collect or use your data. To learn more, see the developer’s privacy policy.

This developer declares that your data is

  • Not being sold to third parties, outside of the approved use cases
  • Not being used or transferred for purposes that are unrelated to the item's core functionality
  • Not being used or transferred to determine creditworthiness or for lending purposes

Support

For help with questions, suggestions, or problems, visit the developer's support site

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