Hermes Browser V12

AI-powered Electron browser with MCP-First architecture for engineers.

Status (2026-07-11): V12 complete. 157 unit PASS + 46/46 eval + 49 MCP tools + 10 LLM providers + Cowork for engineers. Real production-ready.

Tests Tools Providers

🎯 V12 Three Differentiators

1. MCP-First Architecture

Everything exposed as MCP tools (49 total). External AI agents (Claude, GPT, Hermes AI, etc.) can fully control the browser via HTTP bridge or stdio server.

Browser navigation, click, fill, autofill, search
Content extraction: page text, tables, forms, links, search results
File management: list, read, search, grep, stat (Cowork)
Network: search Naver, search DDG, extract via URL
Vision: prints PDF, downloads, find text in page
Multimedia: browse screenshots, capture form fields

2. Local-First + BYOK

Local LLM support + 10 cloud providers. No provider lock-in. BYOK (Bring Your Own Key) for all cloud providers.

Provider	Type	Use case
mock	OpenAI-compat	Local mock (opencode-go proxy)
LM Studio	OpenAI-compat	Local inference (:1234)
Ollama	OpenAI-compat	Local inference (:11434)
OpenAI	OpenAI-compat	gpt-4o-mini default
Anthropic	Native `/v1/messages`	Claude 3.5 Haiku
Google	Native REST	Gemini 2.5 Flash
OpenRouter	OpenAI-compat	Aggregator
MiniMax	Anthropic-compat `/anthropic`	M3
BrowserOS	OpenAI-compat	Local fork (:8765)
OpenAI-compatible	OpenAI-compat	Custom URL

3. Cowork for Engineers

Files + browser + AI 통합. BrowserOS Cowork의 강화 버전 — 회로 도메인 특화.

cowork_list    — list files by pattern
cowork_read    — read text (max 5MB, binary → metadata)
cowork_grep    — regex search across files (cross-platform)
cowork_search  — by name OR content pattern
cowork_stat    — metadata (size, mtime, mime)

Default workspace: C:\Users\qqwer\Hermes-Workspace\

📦 30-Second Quick Start

Test & Run

cd /mnt/c/Users/qqwer/Desktop/Hermes/hermes-browser
npm test           # 157 unit + 46 eval PASS (~3 sec)
npm start          # Launch Electron (Miraecle window)

Live Verification

Hermes Browser auto-starts HTTP bridge on port 8780. Connect from external AI agents:

TOKEN=$(curl -s http://127.0.0.1:8780/auth/token | jq -r .token)

# Call any of 49 tools
curl -X POST http://127.0.0.1:8780/mcp/tool \
  -H "Authorization: Bearer $TOKEN" \
  -d '{"name":"cowork_list","args":{"dir":"demo-circuits"}}'

Use with Claude Code / Cursor / Cline

Add to ~/.claude.json (std로 MCP 사용):

{
  "mcpServers": {
    "hermes-browser": {
      "command": "node",
      "args": ["C:/Users/qqwer/Desktop/Hermes/hermes-browser/mcp-server/server.js"]
    }
  }
}

🏗️ Architecture (V12)

┌────────────────────────────────────────────────────────┐
│  Renderer (src/chrome.html)                            │
│  - Tabs, sidebar, chat UI, settings popover           │
│  - Light/dark theme (Space Grotesk + DM Sans)         │
│  - Spring motion (--ease-spring)                      │
└──────┬─────────────────────────────────────┬───────────┘
       │ IPC                                  │
       │                                      │
┌──────▼─────────────┐            ┌───────────▼──────────┐
│  Main Process      │            │  MCP Bridge          │
│  (main.js)         │◄──────────►│  (HTTP :8780)        │
│  - nativeTheme     │            │  49 tools exposed    │
│  - syncNativeTh..  │            │  localhost only      │
│  - Cowork attach   │            │  Token auth          │
└──────┬─────────────┘            └──────────────────────┘
       │
┌──────▼─────────────────────┐
│  Agent Service             │
│  (src/agent/index.js)      │
│  - Plan/Mode/Approval      │
│  - ReadingList/Workspace   │
│  - Session Recorder        │
│  - CredentialVault         │
│  - CoworkService (V12)     │
│  - Provider abstraction    │
│  - Scheduler               │
└────────────────────────────┘

Key Files

File	Purpose
`main.js`	Electron main, theme sync, IPC, MCP bridge attach
`src/chrome.html`	UI shell with glass + light/dark + spring motion
`src/agent/index.js`	AgentService (single API entry point)
`src/agent/cowork.js`	V12 Cowork: files + browser + AI integration
`src/mcp-bridge.js`	HTTP server exposing 49 tools on port 8780
`tests/cowork.test.js`	6 unit tests for cross-platform path handling
`tests/{agent,credentials,...}.test.js`	157 unit tests total
`eval/runner.js`	46 integration scenarios

📊 V12 Features (Day 1-5)

Day 1: OS Theme Sync

nativeTheme.themeSource = 'system'
OS 변경 시 chrome.html data-theme="dark" 자동 전환
검증: light 100% #f5f5f7, dark 100% #121212

Day 2: BYOK + 10 LLM Providers

Provider presets 자동 채우기 (URL/model)
3 endpoint 타입 dispatch (OpenAI-compat / Anthropic native / Google native)
라이브 검증: 모든 10개 provider endpoint 도달

Day 3: MiniMax Endpoint Fix

base_url = https://api.minimax.io/anthropic
endpoint = {base}/v1/messages
Header = X-Api-Key (capitalized)
검증: 401 "login fail: Please carry the API secret key" (endpoint OK)

Day 4: Cowork + 49 Tools + UI Spring Motion

src/agent/cowork.js 240+ lines (V12 day 1)
5 public Cowork methods + 13 V12 tools (browser/web extensions)
--ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1) + 7 keyframes
Spring-in/slide/sidebar/chat/pulse/focus animations

Day 5: Cross-Platform Path Fix + 회로 Demo

_safePath cross-platform (Windows path → WSL → /mnt/...)
Electron path 모듈 (Windows mode) 작동
BD69730FV 회로 demo (BOM 18 parts, Gerber, datasheet)
5/5 cowork e2e 통과

🛠️ Build & Verification

# Run all tests
npm test

# Quick unit-only run
node tests/agent.test.js
node tests/cowork.test.js

# Eval scenarios (46 total)
node eval/runner.js

# Live MCP call examples
curl -s http://127.0.0.1:8780/mcp/tools | jq '.tools | length'

# Open live window
npm start

📜 License

AGPL-3.0 (no BrowserOS code copy, safeStorage-based credential vault)

🎨 Design Choices

Light theme: #f5f5f7 background, white cards + box-shadow, gold #fbbf24 accent
Dark theme: #0f0f1e background, glass black 0.72 + blur 24px
Fonts: Space Grotesk + DM Sans
Spring motion: tagu requested "쫀득한" easing — cubic-bezier(0.34, 1.56, 0.64, 1)
Glass: backdrop-filter: blur(24px) for panels/popovers

🤝 Acknowledgements

Inspired by browserOS-ai (AGPL-3) for the MCP-first + cowork architecture. Safe fork — no code copied, all implementation original.