chrome-mcp-scalemaker-doctor

chrome-mcp-scalemaker-doctor is a skill for Claude Code, Codex from scalemaker-ship-it/mcp-chrome-scalemaker. It costs 446 tokens per session (3,606 once invoked), scanned B, original, MIT.

A troubleshooting guide for the chrome-mcp-scalemaker MCP server, its browser extension, bridge process, and connection settings. MCP is a way for an agent to call tools provided by another program.

In plain words
What is it for?
Use it whenever chrome-mcp-scalemaker tools or the server fail, including diagnosis, automatic fixes, issue-report export, multi-profile port configuration, and extension focus or reconnection problems.
Why use it?
It helps locate and repair connection problems between the coding agent, Chrome, the extension, and the bridge. It also explains how to route different Chrome profiles to separate ports.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions Claude Code.

Good fit Use it whenever chrome-mcp-scalemaker tools or the server fail, including diagnosis, automatic fixes, issue-report export, multi-profile port configuration, and extension focus or reconnection problems.

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Install with agentmods
npx agentmods add skills/scalemaker-ship-it/mcp-chrome-scalemaker/skill
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add scalemaker-ship-it/mcp-chrome-scalemaker --skill skill
Clone the repo
git clone --depth 1 https://github.com/scalemaker-ship-it/mcp-chrome-scalemaker

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for chrome-mcp-scalemaker-doctor

README.md
[![agentmods](https://agentmods.dev/badge/skills/scalemaker-ship-it/mcp-chrome-scalemaker/skill/github.svg)](https://agentmods.dev/skills/scalemaker-ship-it/mcp-chrome-scalemaker/skill)
Your own site
<a href="https://agentmods.dev/skills/scalemaker-ship-it/mcp-chrome-scalemaker/skill"><img src="https://agentmods.dev/badge/skills/scalemaker-ship-it/mcp-chrome-scalemaker/skill/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for chrome-mcp-scalemaker-doctor

Your own site · 80×15
<a href="https://agentmods.dev/skills/scalemaker-ship-it/mcp-chrome-scalemaker/skill"><img src="https://agentmods.dev/badge/skills/scalemaker-ship-it/mcp-chrome-scalemaker/skill.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 446 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,606 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00446 $0.03606
Opus 5 $0.00223 $0.01803
Sonnet 5 $0.00089 $0.00721
Haiku 4.5 $0.00045 $0.00361

Measured 8d ago against content hash 3d8184de2ab3, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade B, and why

chrome-mcp-scalemaker-doctor scanned grade B with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

| **Installation** | 패키지가 PATH 에 없음 | `npm install -g mcp-chrome-scalemaker-bridge` 실행 권유 (사용자가 sudo 필요할 수 있어 Claude 가 직접 실행 X) |
app/native-server/skill/SKILL.md · 222 lines

How it starts

The opening of the file, as written. The whole thing — 222 lines — stays where its author put it; the contents beside it link to each section on GitHub.

chrome-mcp-scalemaker doctor

이 스킬은 사용자가 chrome-mcp-scalemaker (scalemaker fork) 의 MCP 서버, 확장, bridge, 또는 도구 호출과 관련된 문제를 보고할 때 자동으로 진단·복구합니다.

모든 명령은 Bash tool 로 직접 실행하고 stdout/stderr 를 캡처해서 해석한 뒤 사용자에게 자연어로 답변하세요. "이 명령어를 직접 쳐주세요" 라고 사용자에게 넘기지 마세요.

먼저 mcp-chrome-scalemaker-bridge -V 로 scalemaker fork 인지 확인하세요. 명령이 없거나 다른 패키지 (mcp-chrome-bridge 등) 면 이 스킬은 종료하고 사용자에게 fork 안내만 합니다.


(A) Architecture in 1 minute

사용자 증상 듣고 어느 layer 가 깨졌는지 분류용 mental model:

Claude Code session                              ← 사용자가 작업하는 곳
   ↓ (stdio, .mcp.json 의 env 가 여기서 적용)
mcp-server-stdio.js                              ← bridge npm 패키지의 일부
   ↓ (HTTP fetch, URL = CHROME_PORT env override)
http://127.0.0.1:<port>/mcp                      ← bridge HTTP listener (chrome profile 별 분리)
   ↓ (in-process)
bridge (Native Messaging Host process)           ← Chrome 이 connectNative 로 spawn
   ↑ (chrome.runtime.connectNative)
extension service worker                         ← profile-scoped (각 chrome profile 마다 1개)
   ↑ (popup ↔ service worker, chrome.runtime.sendMessage)
popup UI                                         ← port 입력, 강제포커스 토글, 강제 재연결

핵심 invariant:

  • stdio-config.json 의 url 은 hardcoded 이고, mcp-server-stdio.jsprocess.env.CHROME_PORT 가 있으면 그 port 로 override (v1.0.27+)
  • chrome profile 별로 bridge process 가 분리 spawn 됨 (각자 다른 port listen)
  • popup 의 port 입력 → service worker → connectNative → bridge 가 그 port 로 listen
  • 강제포커스 토글 (chrome.storage.localforceFocusOnToolCall, default false) = chrome.windows.update({focused:true}) 게이트

(B) Diagnostic playbook — 증상 → 명령 (Claude 가 직접 실행)

중요: 모든 명령은 Bash tool 로 Claude 가 직접 실행. 사용자에게 "이거 한 번 쳐보세요" 하지 마세요. stdout/stderr 캡처해서 해석한 뒤 자연어로 답합니다.

분기 알고리즘

  1. 증상 listening → 아래 trigger 표에서 최초 매칭 1개 골라 1st command 실행.
  2. stdout 캡처doctor 결과면 (B-doctor-output) 표 따라 ❌ 항목별 후속 결정.
  3. 후속 명령 실행 후 사용자에게 결과 요약 ('doctor 결과 권한 항목 빨간불. --fix 실행해서 chmod 755 적용함. 이제 popup 다시 열어봐줄래?' 같이).
  4. 3회 시도 후 미해결 → (E) escalate → report --copy + GH Issue URL 안내.

Read the full file on GitHub · 222 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 8d ago First seen · 222 lines · 446 tokens per session scan B 3d8184de2ab3

Subscribe to this mod's changes

chrome-mcp-scalemaker-doctor is a skill published in the GitHub repository scalemaker-ship-it/mcp-chrome-scalemaker (0 stars, last pushed 1mo ago), licensed MIT. It adds 446 tokens to every session and 3,606 once invoked, about $0.0022 per session on Opus 5. A static security scan graded it B with 1 finding (asks for root). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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