diff --git a/packages/coding-agent/docs/providers.md b/packages/coding-agent/docs/providers.md
index 876d2993..ae9edd64 100644
--- a/packages/coding-agent/docs/providers.md
+++ b/packages/coding-agent/docs/providers.md
@@ -42,6 +42,8 @@ Use `/logout` to clear credentials. Tokens are stored in `~/.pi/agent/auth.json`
 
 ## API Keys
 
+### Environment Variables or Auth File
+
 Set via environment variable:
 
 ```bash
@@ -49,25 +51,28 @@ export ANTHROPIC_API_KEY=sk-ant-...
 pi
 ```
 
-| Provider | Environment Variable |
-|----------|---------------------|
-| Anthropic | `ANTHROPIC_API_KEY` |
-| OpenAI | `OPENAI_API_KEY` |
-| Google Gemini | `GEMINI_API_KEY` |
-| Mistral | `MISTRAL_API_KEY` |
-| Groq | `GROQ_API_KEY` |
-| Cerebras | `CEREBRAS_API_KEY` |
-| xAI | `XAI_API_KEY` |
-| OpenRouter | `OPENROUTER_API_KEY` |
-| Vercel AI Gateway | `AI_GATEWAY_API_KEY` |
-| ZAI | `ZAI_API_KEY` |
-| OpenCode Zen | `OPENCODE_API_KEY` |
-| Hugging Face | `HF_TOKEN` |
-| Kimi For Coding | `KIMI_API_KEY` |
-| MiniMax | `MINIMAX_API_KEY` |
-| MiniMax (China) | `MINIMAX_CN_API_KEY` |
+| Provider | Environment Variable | `auth.json` key |
+|----------|----------------------|------------------|
+| Anthropic | `ANTHROPIC_API_KEY` | `anthropic` |
+| Azure OpenAI Responses | `AZURE_OPENAI_API_KEY` | `azure-openai-responses` |
+| OpenAI | `OPENAI_API_KEY` | `openai` |
+| Google Gemini | `GEMINI_API_KEY` | `google` |
+| Mistral | `MISTRAL_API_KEY` | `mistral` |
+| Groq | `GROQ_API_KEY` | `groq` |
+| Cerebras | `CEREBRAS_API_KEY` | `cerebras` |
+| xAI | `XAI_API_KEY` | `xai` |
+| OpenRouter | `OPENROUTER_API_KEY` | `openrouter` |
+| Vercel AI Gateway | `AI_GATEWAY_API_KEY` | `vercel-ai-gateway` |
+| ZAI | `ZAI_API_KEY` | `zai` |
+| OpenCode Zen | `OPENCODE_API_KEY` | `opencode` |
+| Hugging Face | `HF_TOKEN` | `huggingface` |
+| Kimi For Coding | `KIMI_API_KEY` | `kimi-coding` |
+| MiniMax | `MINIMAX_API_KEY` | `minimax` |
+| MiniMax (China) | `MINIMAX_CN_API_KEY` | `minimax-cn` |
 
-## Auth File
+Reference for environment variables and `auth.json` keys: [`const envMap`](https://github.com/badlogic/pi-mono/blob/main/packages/ai/src/env-api-keys.ts) in [`packages/ai/src/env-api-keys.ts`](https://github.com/badlogic/pi-mono/blob/main/packages/ai/src/env-api-keys.ts).
+
+#### Auth File
 
 Store credentials in `~/.pi/agent/auth.json`: