CLI · bmc

From terminal to live feed in one command

One command. Chrome traffic lands in the same live feed — no certificates to install.

A terminal window running "bmc start" that reports Chrome attached and capture live; the prompt line extends as a dashed stream into a mini dashboard card with green status codes. Two Chrome browser devices sit behind the terminal, and a BusyBro chat exchange with a confirm check fills its lower half. $ bmc start ✓ chrome attached · capture live live 200 201
Install & capture · macOS / Linux
bash
# macOS / Linux (self-updates from the dashboard):
curl -fsSL https://cdp.busymate.net/install.sh | bash

# Sign in once, create a browser, and capture it → your Busymate feed:
bmc login
bmc create dev --browser chrome --start
Install & capture · Windows
powershell
# Windows (PowerShell) — same, self-updating:
irm https://cdp.busymate.net/install.ps1 | iex

bmc login
bmc create dev --browser chrome --start

Why bmc

The simplest capture source

The fastest path from open Chrome to inspect every request — and it can shape that traffic too.

Zero trust setup — literally none

Because bmc taps the DevTools Protocol, the traffic is already decrypted. Nothing goes in a keychain, nothing throws a warning; capture starts the moment Chrome does.

Named browser devices

A background daemon manages independent Chrome profiles as named devices — start, stop and script each one from the terminal, the dashboard, or an MCP call. Your browsers become fleet members.

Mock and mutate, locally

The same sandboxed JS engine that powers the proxy runs against your real Chrome session: rewrite requests, synthesize responses, and watch every change land visibly in the feed.

BusyBro in your terminal

A native-scrollback REPL chat that knows this machine's devices. Ask it to create a browser, open a URL, run a check — actions are confirm-gated, and answers are grounded in your actual capture.

Never touch it again

The daemon self-updates when idle, reports its live build, and restarts on request from the dashboard or MCP. It's infrastructure that maintains itself.

How it works

Reads Chrome traffic after TLS

bmc attaches to Chrome over the DevTools Protocol — the same wire DevTools itself uses — so it sees requests exactly as the browser does: already decrypted.

Data path: TLS terminates inside Chrome; bmc reads decrypted DevTools Protocol events and streams entries to the Busymate ingest API, landing in the dashboard, MCP and HAR export. chrome --remote-debugging TLS terminated here GET api.example.com 200 POST auth.example.com 201 GET cdn.example.com 304 ws:// Network.* already decrypted bmc entries + bodies source: cdp POST /ingest dash.busymate.dev · live feed mcp.busymate.dev · browser_* export_har · same entries
  1. 01

    Its own Chrome, per folder

    bmc start launches a dedicated Chrome with its own profile and its own debug port for the current directory. Each folder is an independent device — run it in two folders and you get two fully separate browsers.

  2. 02

    Attach over the DevTools Protocol

    It connects to Chrome's debug port over a WebSocket, auto-attaches to every tab, and enables the Network domain — the same wire Chrome DevTools itself uses. No extension, no proxy in the path, nothing injected into pages.

  3. 03

    Events become entries

    Request, response and timing events are correlated into the same entry shape every Busymate source uses, with headers and bodies (up to 1 MB per body) pulled straight from the browser — after Chrome already decrypted them.

  4. 04

    Batched into one feed

    Entries are batched and posted to the ingest API about once a second. The folder pairs as a real Busymate device, so its traffic lands in the same dashboard, the same filters, the same MCP tools and the same HAR export as every phone.

No certificates

Capture without a root CA

TLS terminates inside Chrome, and bmc reads on the browser's side of it. There is no man-in-the-middle to trust — so there is nothing to install, and nothing for pinning to detect.

A proxy debugger decrypts HTTPS by re-signing it with its own certificate authority — which means installing that CA, trusting it in a keychain, and losing the apps that pin their certificates. bmc skips the whole problem: the DevTools Protocol hands over each request after Chrome has already decrypted it.

Capture paths compared: CDP, MITM proxy, on-device VPN
What it takesbmc (CDP)Proxy (MITM)iOS / Android app
Root CA to installNoneYes — trust the proxy CAYes — on-device CA, decrypting only domains you opt in
Network setupNonePoint each client at the proxyNone — an on-device VPN tunnel
Pinned certificatesUnaffected — nothing sits in the TLS pathPinned apps refuse the proxy CAPinned apps stay encrypted (metadata still visible)
What it seesThe Chrome it launches — every tabAny app or script you point at itEvery app on the phone
Best forWeb apps, SPAs, agent-driven browsingBackends, scripts, browsers on other machinesMobile apps, in the field

Each path is first-class: the proxy and the phone apps exist precisely for the traffic CDP can't see. Use bmc for browsers, the proxy for anything you can point at it, and the apps for whole-phone capture.

Browser automation

Drive the browser. See every request.

Every bmc browser is remote-controllable over MCP — an AI agent or a script can open pages, read them and act, while capture records every request the session makes. That combination is the point.

Drive and read the page

browser_open
Navigate the browser to a URL.
browser_targets
List the open tabs and pick the one to drive.
browser_snapshot
A compact accessibility-tree snapshot — the page as structured text, built for agents.
browser_screenshot
A PNG of the active page.
browser_eval
Run JavaScript in the page. Placeholder variables are resolved server-side from the device's env, so an agent can fill a login form without ever seeing the password.
browser_cdp
Raw DevTools Protocol access for everything else — owner-gated.

Browser profiles

Built-in Chrome, Brave and Edge profiles plus custom ones authored once in the dashboard — per-OS binaries, default flags and a flag catalog every machine's bmc resolves the same way.

  • list_browser_profiles
  • get_browser_profile
  • upsert_browser_profile
  • delete_browser_profile

The daemon, remotely

Live build, uptime and logs without SSH; list every named browser on a machine; restart or hot-update the daemon while running captures keep capturing. One switch arms or disarms it all, per device.

  • get_cdp_daemon_status
  • get_cdp_logs
  • list_cdp_instances
  • restart_cdp_daemon
  • update_cdp_daemon
  • set_device_cdp_control

Remote control is opt-in per device and permission-gated; capture keeps flowing either way.

GodBrowser

A coherent device identity, every request captured

GodBrowser is an anti-fingerprint Chromium that gives a browser a coherent, real-looking device identity. It is a built-in bmc browser profile — so an agent can run a persona and capture its traffic in the same live feed as your phones.

Select GodBrowser with one flag and bmc drives it over the same DevTools Protocol as any other browser device: it inspects every request the persona makes — already decrypted, no root CA, no proxy — and streams them into your Busymate feed. GodBrowser markets bmc as its request-inspection companion for exactly this pairing.

One identity, all of a piece

User-agent, screen, WebGL, canvas and audio, locale and timezone all agree with the persona — and TLS/JA4, UA-CH and codecs align to the claimed device before a line of JavaScript runs. GodBrowser's own framing: a real device, not a disguised one.

Deterministic seeds

The --bot-profile flag derives a whole device identity from a seed string. Change the seed, change the device — repeatable and reproducible, so a persona replays exactly.

Personas across platform and browser

Windows, macOS, Linux, iOS and Android crossed with Chrome, Safari, Firefox, Samsung Internet and Edge, selected with --bot-os and --bot-browser. It is a patched Chromium 151 base.

Cluster, API and MCP

GodBrowser runs across your own node cluster, driven from code, its API or an AI client — and ships its own remote MCP server. Proxies are assigned per profile deterministically; sessions sync across machines over Redis.

Run a persona, capture its traffic
bash
# GodBrowser is a built-in bmc browser profile — pick it per device:
bmc create ios-persona --browser godbrowser -- \
  --bot-os=ios --bot-browser=safari --bot-profile=seed-42 --start

GodBrowser is one of bmc's built-in profiles, alongside Chrome, Brave and Edge — selecting it with --browser godbrowser is the whole setup. bmc resolves the binary, exposes its persona flags, pairs the device as a distinct “God Browser”, and tags its captured traffic gdp so it stands apart in the feed. Nothing is injected into GodBrowser: bmc drives it over the DevTools Protocol, and its anti-fingerprint layer lives in the browser core, so it stays intact under automation. Both tools are MCP-native — GodBrowser's remote MCP server and Busymate's mean one agent can drive personas and read their traffic in a single session, each behind its own consent-based token.

What people build

One tool, four jobs

Agent-driven QA

An assistant opens your staging site, walks the flow and screenshots what it sees — while the network feed shows exactly what broke, with full request and response bodies.

Debug a SPA

Watch XHR and fetch calls stream live with headers, bodies and timings while you click through the app. The history survives a reload — no DevTools-tab archaeology.

Capture an OAuth flow

Redirect chains, tokens and callbacks recorded end to end — including on providers whose pinned certificates a proxy can't open.

Work a signed-in page

The folder's Chrome profile keeps its session between runs; snapshot and eval read the page while capture documents every request behind it.

FAQ

The sceptical questions

Does bmc need a certificate or a proxy?

No. It attaches to Chrome over the DevTools Protocol and reads traffic after Chrome has decrypted it. There is no root CA to install, no keychain trust prompt, and no proxy settings to change.

Does it work with certificate pinning and HSTS?

Yes. Pinning defends the TLS connection between Chrome and the server — bmc never touches that connection; it reads inside the browser. HSTS, corporate device policy and managed keychains are equally unaffected.

Does it modify pages or the sites I visit?

Capture injects nothing — bmc listens to Chrome's own network events. It also launches its own Chrome with its own profile, so your everyday browser is never touched.

Can it run headless or in CI?

Yes. Anything after -- goes straight to Chrome (for example --headless=new), and CDP_USER_JWT or CDP_PAIR_EMAIL and CDP_PAIR_PASSWORD sign in without opening a browser.

Which browsers does it support?

Chromium-family browsers: built-in Chrome, Brave, Edge and Chromium profiles, plus custom profiles you author in the dashboard. Anything that speaks the DevTools Protocol.

What about traffic outside the browser?

bmc only sees the Chrome it is attached to. For backends and scripts use the Busymate proxy; for whole-phone capture use the iOS or Android app — everything lands in the same feed.

Start capturing Chrome

Install bmc, sign in once, and Chrome traffic lands in the same live feed.

Ask your mate