OpenCode Usage Plugin

Track AI provider rate limits and quotas in real-time.

Features

• Live rate limits – See Codex/OpenAI hourly/weekly limits at a glance
• Anthropic subscription limits – Track Claude OAuth windows (5h, 7d, Sonnet/Opus/cowork tiers)
• Proxy quota stats – Monitor Mirrowel Proxy credentials and tier usage
• Copilot usage – Track GitHub Copilot chat + completions quotas
• Z.ai usage – Track GLM Coding Plan 5-hour token quota and monthly tool quota
• OpenRouter usage – Track API credit usage and remaining balance
• Inline status – Results appear directly in your chat, no context switching
• Zero setup – Auto-detects providers from your existing config

Installation

Add to your opencode.json:

{
  "$schema": "https://opencode.ai/config.json",
  "plugin": ["@howaboua/opencode-usage-plugin"]
}

OpenCode installs dependencies automatically on next launch.

Configuration

The plugin creates a default config file on first run at:

Linux/macOS: ~/.config/opencode/usage-config.jsonc
Windows: %APPDATA%\opencode\usage-config.jsonc

{
  // REQUIRED: Proxy server endpoint (default: "http://localhost:8000")
  // Leave empty ONLY if you don't use the proxy
  "endpoint": "http://localhost:8000",

  // REQUIRED: API key for proxy auth (default: "VerysecretKey")
  // Leave empty if your proxy doesn't require authentication
  "apiKey": "VerysecretKey",

  // Optional: Request timeout in milliseconds (default: 10000)
  "timeout": 10000,

  // Optional: Z.ai API endpoint (default: "https://api.z.ai")
  "zaiEndpoint": "https://api.z.ai",

  // Optional: Show/hide providers in /usage output
  "providers": {
    "openai": true,
    "anthropic": true,
    "proxy": true,
    "copilot": true,
    "zai": true,
    "openrouter": true
  },

  // Model group display configuration (optional)
  "modelGroups": {
    // Show all model groups from proxy (default: true)
    // When true: auto-discovers all groups, uses displayNames as overrides
    // When false: only shows groups listed in displayNames (whitelist mode)
    "showAll": true,

    // Override display names for specific groups (optional)
    // Groups not listed here use their original name from the proxy
    "displayNames": {
      "g3-pro": "Gemini Pro",
      "g3-flash": "Gemini Flash",
      "claude": "Claude"
    }
  }
}

⚠️ Important: If using the Mirrowel Proxy, both endpoint and apiKey must be set. The proxy defaults to endpoint: http://localhost:8000 and apiKey: VerysecretKey. If you changed these during your proxy setup, you MUST update your config file to match.

Model Group Configuration

The modelGroups section controls how quota groups are displayed:

showAll	displayNames	Behavior
true (default)	empty/missing	Show all groups with original names
true	provided	Show all groups, apply display name overrides
false	provided	Only show groups in displayNames (whitelist mode)
false	empty/missing	Shows no groups (all filtered out)
missing section	—	Legacy behavior (hardcoded group whitelist)

If missing, the plugin creates a default template on first run.

Copilot auth

Copilot is detected from either of these locations:

• ~/.local/share/opencode/copilot-usage-token.json
• ~/.local/share/opencode/auth.json with a github-copilot entry
• ~/.config/opencode/copilot-quota-token.json (optional override)

Usage

Check all providers

/usage

Check specific provider

/usage codex
/usage anthropic
/usage claude
/usage proxy
/usage copilot
/usage zai
/usage glm
/usage openrouter
/usage or

Support the proxy

/usage support

Supported Providers

Provider	Source
Codex / OpenAI	Auth tokens + /wham/usage endpoint
Anthropic Claude	OAuth profile + /api/oauth/usage windows
Mirrowel Proxy	Local /v1/quota-stats endpoint
GitHub Copilot	GitHub internal usage APIs
Z.ai GLM Coding Plan	chat.z.ai auth + Z.ai usage APIs
OpenRouter	API key + openrouter.ai/api/v1/key

Troubleshooting

Proxy shows "not configured" error

• Ensure endpoint and apiKey are set in usage-config.jsonc
• Default values: endpoint: http://localhost:8000, apiKey: VerysecretKey
• If you changed these during proxy setup, update your config file to match
• Verify your proxy is running at the specified endpoint

Missing provider data

• Use providers: { ... } in config to disable unused providers
• For Codex: Ensure you have valid auth tokens
• For Copilot: Check token file locations in Configuration section above
• For Z.ai: Ensure your OpenCode auth includes chat.z.ai credentials
• For Anthropic: Ensure Claude OAuth credentials are available (anthropic in auth.json)
• For OpenRouter: Ensure OpenRouter API key is available (openrouter or or in auth.json)

Config file not found

• The plugin auto-creates usage-config.jsonc on first run
• Check the path in Configuration section above
• Manually create the file if needed

See AGENTS.md for internal architecture.