ai-agent-book 精选快照（<2MB 代码与文档，来自 github.com/bojieli/ai-agent-book）

chapter1/context/env.example

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+# LLM Provider Configuration (dashscope/qwen, siliconflow, doubao, kimi,
+# moonshot, deepseek, zhipu, openrouter, or ollama)
+LLM_PROVIDER=doubao
+
+# API Keys (set the appropriate one for your provider)
+SILICONFLOW_API_KEY=your_siliconflow_api_key_here
+# Alibaba Cloud Model Studio (Bailian) / Qwen
+DASHSCOPE_API_KEY=your_dashscope_api_key_here
+# Optional: use this instead for an international-region key
+# DASHSCOPE_BASE_URL=https://dashscope-intl.aliyuncs.com/compatible-mode/v1
+ARK_API_KEY=your_ark_api_key_here
+MOONSHOT_API_KEY=your_moonshot_api_key_here
+DEEPSEEK_API_KEY=your_deepseek_api_key_here
+# Optional: override DeepSeek base URL (default: https://api.deepseek.com)
+# DEEPSEEK_BASE_URL=https://api.deepseek.com
+ZHIPU_API_KEY=your_zhipu_api_key_here
+
+# Universal fallback: if the provider key above is missing/invalid but
+# OPENROUTER_API_KEY is set, requests are routed through OpenRouter and the
+# model id is mapped automatically (bare gpt-*/o1-* -> openai/*, claude-* ->
+# anthropic/*, deepseek-* -> deepseek/*, other native ids -> OPENROUTER_MODEL
+# or openai/gpt-5.6-luna).
+# You can also pass --provider openrouter to use OpenRouter directly.
+OPENROUTER_API_KEY=your-openrouter-api-key
+# OPENROUTER_MODEL=openai/gpt-5.6-luna  # model used when falling back for non-OpenRouter native ids
+
+# Optional: Model Configuration
+# MODEL_NAME=  # Leave empty to use provider default
+# For DeepSeek: deepseek-v4-flash (default) or deepseek-v4-pro
+# MODEL_TEMPERATURE=0.3
+# MODEL_MAX_TOKENS=1000
+
+# Optional: Test Configuration
+# MAX_ITERATIONS=10
+# TEST_PDF_URL=https://example.com/sample.pdf
+
+# Optional: Logging Configuration
+# LOG_LEVEL=INFO
+# LOG_FILE=agent.log