docs: add Anthropic provider to all documentation pages

- quickstart.md: Add Anthropic to the provider comparison table
- configuration.md: Add Anthropic to provider list table, add full
  'Anthropic (Native)' section with three auth methods (API key,
  setup-token, Claude Code auto-detect), config.yaml example,
  and provider alias tip
- environment-variables.md: Add ANTHROPIC_API_KEY, ANTHROPIC_TOKEN,
  CLAUDE_CODE_OAUTH_TOKEN to LLM Providers table; add 'anthropic'
  to HERMES_INFERENCE_PROVIDER values list

website/docs/getting-started/quickstart.md

@@ -43,6 +43,7 @@ hermes setup       # Or configure everything at once
 |----------|-----------|---------------|
 | **Nous Portal** | Subscription-based, zero-config | OAuth login via `hermes model` |
 | **OpenAI Codex** | ChatGPT OAuth, uses Codex models | Device code auth via `hermes model` |
+| **Anthropic** | Claude models directly (Pro/Max or API key) | API key or Claude Code setup-token |
 | **OpenRouter** | 200+ models, pay-per-use | Enter your API key |
 | **Custom Endpoint** | VLLM, SGLang, any OpenAI-compatible API | Set base URL + API key |
 

website/docs/reference/environment-variables.md

@@ -23,6 +23,9 @@ All variables go in `~/.hermes/.env`. You can also set them with `hermes config
 | `MINIMAX_BASE_URL` | Override MiniMax base URL (default: `https://api.minimax.io/v1`) |
 | `MINIMAX_CN_API_KEY` | MiniMax API key — China endpoint ([minimaxi.com](https://www.minimaxi.com)) |
 | `MINIMAX_CN_BASE_URL` | Override MiniMax China base URL (default: `https://api.minimaxi.com/v1`) |
+| `ANTHROPIC_API_KEY` | Anthropic API key or setup-token ([console.anthropic.com](https://console.anthropic.com/)) |
+| `ANTHROPIC_TOKEN` | Anthropic OAuth/setup token (alternative to `ANTHROPIC_API_KEY`) |
+| `CLAUDE_CODE_OAUTH_TOKEN` | Claude Code setup-token (same as `ANTHROPIC_TOKEN`) |
 | `HERMES_MODEL` | Preferred model name (checked before `LLM_MODEL`, used by gateway) |
 | `LLM_MODEL` | Default model name (fallback when not set in config.yaml) |
 | `VOICE_TOOLS_OPENAI_KEY` | OpenAI key for TTS and voice transcription (separate from custom endpoint) |
@@ -32,7 +35,7 @@ All variables go in `~/.hermes/.env`. You can also set them with `hermes config
 
 | Variable | Description |
 |----------|-------------|
-| `HERMES_INFERENCE_PROVIDER` | Override provider selection: `auto`, `openrouter`, `nous`, `zai`, `kimi-coding`, `minimax`, `minimax-cn` (default: `auto`) |
+| `HERMES_INFERENCE_PROVIDER` | Override provider selection: `auto`, `openrouter`, `nous`, `anthropic`, `zai`, `kimi-coding`, `minimax`, `minimax-cn` (default: `auto`) |
 | `HERMES_PORTAL_BASE_URL` | Override Nous Portal URL (for development/testing) |
 | `NOUS_INFERENCE_BASE_URL` | Override Nous inference API URL |
 | `HERMES_NOUS_MIN_KEY_TTL_SECONDS` | Min agent key TTL before re-mint (default: 1800 = 30min) |

website/docs/user-guide/configuration.md

@@ -63,6 +63,7 @@ You need at least one way to connect to an LLM. Use `hermes model` to switch pro
 |----------|-------|
 | **Nous Portal** | `hermes model` (OAuth, subscription-based) |
 | **OpenAI Codex** | `hermes model` (ChatGPT OAuth, uses Codex models) |
+| **Anthropic** | `hermes model` (API key, setup-token, or Claude Code auto-detect) |
 | **OpenRouter** | `OPENROUTER_API_KEY` in `~/.hermes/.env` |
 | **z.ai / GLM** | `GLM_API_KEY` in `~/.hermes/.env` (provider: `zai`) |
 | **Kimi / Moonshot** | `KIMI_API_KEY` in `~/.hermes/.env` (provider: `kimi-coding`) |
@@ -78,6 +79,34 @@ The OpenAI Codex provider authenticates via device code (open a URL, enter a cod
 Even when using Nous Portal, Codex, or a custom endpoint, some tools (vision, web summarization, MoA) use a separate "auxiliary" model — by default Gemini Flash via OpenRouter. An `OPENROUTER_API_KEY` enables these tools automatically. You can also configure which model and provider these tools use — see [Auxiliary Models](#auxiliary-models) below.
 :::
 
+### Anthropic (Native)
+
+Use Claude models directly through the Anthropic API — no OpenRouter proxy needed. Supports three auth methods:
+
+```bash
+# With an API key (pay-per-token)
+export ANTHROPIC_API_KEY=sk-ant-api03-...
+hermes chat --provider anthropic --model claude-sonnet-4-6
+
+# With a Claude Code setup-token (Pro/Max subscription)
+export ANTHROPIC_API_KEY=sk-ant-oat01-...  # from 'claude setup-token'
+hermes chat --provider anthropic
+
+# Auto-detect Claude Code credentials (if you have Claude Code installed)
+hermes chat --provider anthropic  # reads ~/.claude.json automatically
+```
+
+Or set it permanently:
+```yaml
+model:
+  provider: "anthropic"
+  default: "claude-sonnet-4-6"
+```
+
+:::tip Aliases
+`--provider claude` and `--provider claude-code` also work as shorthand for `--provider anthropic`.
+:::
+
 ### First-Class Chinese AI Providers
 
 These providers have built-in support with dedicated provider IDs. Set the API key and use `--provider` to select: