MCP 服务器

peek

Records masked browser sessions (rrweb DOM + console + network) to a local SQLite store and exposes them to AI coding agents via stdio MCP. Fully local, no SaaS, no telemetry.

README

rrweb-stack

Two OSS products on one rrweb-based substrate. Both ship as npm packages today.

Product	One line	Install
tracelane	The reporter for your WebdriverIO tests — Playwright and Cypress on the roadmap. Self-contained HTML for every run — replay failures, audit successes, attach to any bug tracker. No SaaS, no dashboard, no signup.	`npx @tracelane/cli init`
peek	Your real browser, exposed to your AI coding agent over MCP — capture once, query forever, never leaves your machine.	`npm install -g @peekdev/cli && npx peek init`

tracelane install — one command

Above: npx @tracelane/cli init in a real WebdriverIO project — detect runner, install, edit wdio.conf.ts, ignore reports dir.

peek query — sessions are structured data

Above: peek sessions list then peek sessions show ... --format markdown — a recorded browser session as queryable structured output, AI-ready.

What's where

tracelane

Package	Status	What it does
`@tracelane/wdio`	alpha	WebdriverIO Service — capture + write HTML report
`@tracelane/playwright`	planned (Q3 2026)	Playwright Reporter implementing `onTestEnd` + `onAttachment`
`@tracelane/cypress`	planned (Q4 2026)	JSON-output adapter (no Test Replay overlap)
`@tracelane/core`	alpha	Framework-agnostic capture engine — depended on by the adapters
`@tracelane/report`	alpha	Self-contained HTML report builder

Docs: tracelane.cubenest.in (source under apps/tracelane-docs/). The tracelane-wdio README is the right starting point.

peek

Package	Status	What it does
`@peekdev/cli`	alpha	`peek init` installer + `peek sessions` query / export
`@peekdev/mcp`	alpha	stdio MCP server — exposes captured sessions to Claude Code, Cursor, Cline, Windsurf
`peek-extension`	alpha (CWS submission pending)	Chrome MV3 extension — the real browser, recorded

Docs: peek.cubenest.in (source under apps/peek-docs/).

peek requires Node.js ≥ 22. Its native better-sqlite3 dependency only ships prebuilt binaries for Node 22+; on older Node (notably Windows, which has no C/C++ toolchain by default) the install falls back to compiling from source and fails.

Shared substrate

@cubenest/rrweb-core — vendored PostHog rrweb fork, PII masking primitives, large-DOM throttling, screenshot fallback, network/console capture abstractions, compression helpers. Used by both products. The fork is pinned by SHA + the substrate's NOTICE attributes both PostHog's plugin lineage and the upstream rrweb roots.

Why two products, one repo

Same recording engine, same trust model, two different consumer surfaces:

tracelane ships test-time captures into a self-contained HTML artifact your team and AI agents can read offline.
peek ships live-browser captures into an MCP server your AI coding agent can query.

Shared upstream means one fork to track, one masking surface to harden, one license + DCO + security policy.

Pre-launch state

Pre-1.0. Alpha packages live on npm. Branch protection is on main (PR + CI + DCO + linear history). All workflows use Trusted Publishing OIDC + SLSA provenance. Renovate runs with a 7-day cooldown (21 days for the @posthog/rrweb lineage) and config:best-practices. Public launch motion is in progress.

Contributing

Apache 2.0. DCO sign-off required on all contributions. See CONTRIBUTING.md, CODE_OF_CONDUCT.md, SECURITY.md.

Sponsor / support

GitHub Sponsors — github.com/sponsors/harry-harish (opening for launch)
The work is open-source and sustainable; sponsorship keeps it that way. See docs/SUSTAINABILITY.md for the maintenance cadence.