diff --git a/README.md b/README.md
index 7eed56c..13d36fd 100644
--- a/README.md
+++ b/README.md
@@ -4,9 +4,11 @@ Source code extracted from `@anthropic-ai/claude-code@2.1.88` npm package via so
 
 The 57MB source map (`cli.js.map`) shipped inside the npm package and pointed to a Cloudflare R2 bucket containing the full TypeScript source. No reverse engineering was performed — Anthropic published it themselves.
 
-## How to Run
+---
 
-**Requirements:** Node.js 18+ and an [Anthropic API key](https://console.anthropic.com/)
+## Quick Start
+
+**Requirements:** Node.js 18+
 
 ```bash
 git clone https://github.com/antonoly/claude-code.git
@@ -14,7 +16,42 @@ cd claude-code
 node cli.js
 ```
 
-That's it. On first launch you'll be prompted to log in or set `ANTHROPIC_API_KEY`.
+On first launch, you'll be prompted to log in with your Anthropic account. If you have a Claude Max/Pro subscription, it works immediately — no API key needed.
+
+### With an API Key
+
+```bash
+export ANTHROPIC_API_KEY=sk-ant-...
+node cli.js
+```
+
+### With AWS Bedrock
+
+```bash
+export CLAUDE_CODE_USE_BEDROCK=1
+export AWS_REGION=us-east-1
+node cli.js
+```
+
+### With Google Vertex AI
+
+```bash
+export CLAUDE_CODE_USE_VERTEX=1
+export CLOUD_ML_REGION=us-east5
+node cli.js
+```
+
+### Custom API Endpoint
+
+```bash
+export ANTHROPIC_BASE_URL=https://your-proxy.example.com
+export ANTHROPIC_API_KEY=your-key
+node cli.js
+```
+
+> **Note:** Claude Code uses the Anthropic Messages API format. It does not support OpenAI-compatible endpoints (Ollama, LM Studio, etc.) directly — you would need an API format translator proxy like [litellm](https://github.com/BerriAI/litellm) in front.
+
+---
 
 ## What's Inside
 
@@ -27,11 +64,11 @@ That's it. On first launch you'll be prompted to log in or set `ANTHROPIC_API_KE
 
 ### Key Findings
 
-- **`buddy/`** — Full Tamagotchi pet system: 18 species, rarity tiers (1% legendary, 0.01% shiny legendary), 5 stats, gacha PRNG seeded per-user, ASCII art sprites. Launch gated for May 2026.
-- **`utils/undercover.ts`** — Auto-activates on public repos. Injects system prompt: *"Do not blow your cover."* No force-OFF switch.
-- **`outputStyles/`** — Anti-distillation defenses: strips tool lists, model info, and thinking content to prevent competitors from scraping behavior.
-- **`coordinator/`** — KAIROS/Auto-Dream: autonomous multi-step planning with self-reflection loops.
-- **`context/`** — 4-layer context compression: pruning → summarization → truncation → eviction.
+- **`buddy/`** — Full Tamagotchi pet system: 18 species, rarity tiers (1% legendary, 0.01% shiny legendary), 5 stats, gacha PRNG seeded per-user, ASCII art sprites
+- **`utils/undercover.ts`** — Auto-activates on public repos. Injects system prompt: *"Do not blow your cover."* No force-OFF switch
+- **`outputStyles/`** — Anti-distillation defenses: strips tool lists, model info, and thinking content to prevent competitors from scraping behavior
+- **`coordinator/`** — KAIROS/Auto-Dream: autonomous multi-step planning with self-reflection loops
+- **`context/`** — 4-layer context compression: pruning → summarization → truncation → eviction
 
 ### Source Tree
 
@@ -56,12 +93,16 @@ That's it. On first launch you'll be prompted to log in or set `ANTHROPIC_API_KE
 └── vim/                # Vim keybindings
 ```
 
+---
+
 ## Full Analysis
 
 Independent architecture analysis with source code evidence:
 
 **[verified-skill.com/insights/claude-code](https://verified-skill.com/insights/claude-code)**
 
+---
+
 ## Disclaimer
 
 This repository contains source code that was publicly exposed via npm source maps on March 31, 2026. All code was directly readable from the published npm package `@anthropic-ai/claude-code@2.1.88`. No reverse engineering, decompilation, or circumvention of technical protection measures was performed.
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