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BrowserTap MCP

io.github.LinVireo/browsertap-mcpv0.4.12Cloud Storage

MCP server that drives the real Chrome you already use, through an extension and CDP.

The current version, v0.4.12, was published to the official MCP registry on 2026-08-23. It is distributed as browsertap-mcp on PyPI, filed under Cloud Storage by this index, and declares 4 environment variables. Removals and unreachable sources are measured across every server this index tracks, contract drift across the servers that answer in consecutive snapshots; the index's current counts put this record in context.

In-path gate · all MCP tools

Using BrowserTap MCP in Claude, Cursor, Gemini CLI, Cline, or Zed?

MCP tool contracts can change remotely with no version bump. The mcpindex gate pins each contract and HOLDs the call when it drifts-before your agent acts. Zero credentials. This is not the package install for this server itself (use Install this server for that).

Install the mcpindex gate (one command)

Rewrites your MCP host config so each server launches behind the gate. Inspect first: curl -fsSL https://mcpindex.ai/install.sh | less

uv tool install mcpindex-gate && mcpindex-config-wire
Auditable install path →Watch it hold a drift →
Trust verdict · v1 advisory · method
NOT YET SCREENEDno verdict on file

Verdict not yet evaluated for this tool. The semantic screen takes adversarial cases first; coverage rolls out as the corpus expands (15/150 labels to graduation). The deterministic conformance probe is built but has not yet run on the public corpus, so a recorded verdict here is REVIEW or UNVERIFIED, never a clearing ALLOW. Until a verdict is recorded, an agent should treat this tool as not-yet-cleared and fall back to its own checks. Method: the eval, four-state verdict, honest limits.

Own this server? Screen its description →

That verdict was true at screening time (snapshot 2026-08-23).

Contracts can change after screening, with no version bump. The gate pins BrowserTap MCP’s tool contracts on first sight and holds any silent change before your agent acts - the check that keeps being true on Tuesday.

See your first HOLD in 2 minutes →

Related: how to trust an MCP server · screen before install · silent contract drift

Environment variables
BROWSERTAP_PREFERRED_BROWSER

Which connected browser an unqualified call targets: chrome, edge or opera. Defaults to whichever registered first.

BROWSERTAP_MODE

Approval profile: lab or safe. Defaults to lab, which skips approval prompts and still enforces the cross-process lock, the quiet-input gate, target activation and on-screen confirmation; safe asks before every physical input.

BROWSERTAP_BRIDGE_PORT

Base loopback port for the bridge daemon. Defaults to 18765.

BROWSERTAP_STATE_DIR

Directory holding the bridge token and runtime state. Defaults to ~/.browsertap.

MCP quality score · maturity, not trust · methodology
freshness
25
completeness
20
installability
25
documentation
15
stability
5
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