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docs: add OpenCode Anthropic OAuth plugin to README #24

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marcusquinn merged 1 commit into from
Jan 9, 2026
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docs: add OpenCode Anthropic OAuth plugin to README #24

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31 changes: 31 additions & 0 deletions README.md
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Expand Up @@ -192,6 +192,37 @@ opencode auth login

**Multi-account load balancing:** Add multiple Google accounts for automatic rate limit distribution and failover. See the [plugin documentation](https://github.com/NoeFabris/opencode-antigravity-auth) for model configuration.

### OpenCode Anthropic OAuth Plugin

The setup automatically installs the [opencode-anthropic-auth](https://github.com/anomalyco/opencode-anthropic-auth) plugin, enabling OAuth authentication for Claude Pro/Max accounts. This allows Claude subscribers to use OpenCode with zero API costs.

**After setup, authenticate:**

```bash
opencode auth login
# Select: Anthropic → Claude Pro/Max
# Follow OAuth flow in browser
```

**Benefits:**

- **Zero cost** for Claude Pro/Max subscribers (covered by subscription)
- **Automatic token refresh** - No manual re-authentication needed
- **Beta features enabled** - Extended thinking modes and latest features
- **Three authentication methods:**
- Claude Pro/Max OAuth (recommended for subscribers)
- Create API Key via OAuth
- Manual API key entry

**Available models:**

All Anthropic models available to Pro/Max subscribers, including:
- `claude-sonnet-4-20250514`
- `claude-opus-4-5`
- Extended thinking modes

See the [plugin documentation](https://github.com/anomalyco/opencode-anthropic-auth) and `.agent/tools/opencode/opencode-anthropic-auth.md` for complete setup and troubleshooting.

### Oh-My-OpenCode Plugin (Optional)

The setup offers to install [oh-my-opencode](https://github.com/code-yeongyu/oh-my-opencode) - a complementary plugin that adds **coding productivity features**:
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