oc-usage-limits-plugin

OpenCode TUI plugin that shows Codex, OpenCode GO, ZAI, Synthetic, MiniMax Token Plan, and Qwen usage limits in the sidebar and prompt footer.

Features

• Adds a Usage Limits block under the sidebar Context section.
• Shows current Codex usage windows from OpenAI/Codex auth.
• Shows current ZAI quota windows from ZAI Coding Plan auth.
• Shows current Synthetic rolling 5-hour and weekly windows.
• Shows current MiniMax Token Plan rolling 5-hour and weekly windows.
• Shows current Qwen Token Plan windows from the local qwencloud CLI.
• Shows current OpenCode GO rolling, weekly, and monthly windows.
• Adds compact prompt-footer usage when the current session uses an OpenAI, OpenCode GO, ZAI Coding Plan, Synthetic, or MiniMax Token Plan model.
• Providers are toggled from ~/.config/opencode/usage-limits.jsonc.
• Reads OpenCode-connected credentials first, then falls back to explicit config/env credentials.

Install

Standard OpenCode uses the stable package from npm's latest dist-tag. Install it globally with:

opencode plugin oc-usage-limits-plugin -g

• -g / --global installs to ~/.config/opencode/tui.json.
• Without -g, installs locally to <project>/.opencode/tui.json (requires a git worktree).
• --force replaces an existing pinned version.

The CLI installs the latest package and updates the TUI plugin config for you. The package entrypoint is oc-usage-limits-plugin/tui.

OpenCode v2 uses the preview package from npm's next dist-tag. Install it globally with OpenCode v2 only:

opencode plugin oc-usage-limits-plugin@next -g

The v2 package is built and released from the opencode-v2 branch. It is preview/beta software until validation against the v2 host is complete. Do not use @next with standard OpenCode, and do not use the stable package with OpenCode v2.

To configure it manually instead, add the plugin to ~/.config/opencode/tui.json:

{
  "$schema": "https://opencode.ai/tui.json",
  "plugin": ["oc-usage-limits-plugin"],
}

OpenCode TUI plugins are configured in tui.json, not opencode.jsonc.

Restart OpenCode after changing TUI plugin config.

Troubleshooting

Reinstall or refresh the cached plugin

If the plugin is stale, broken, or needs a clean reinstall, quit OpenCode and remove the cache for the lane you installed. OpenCode caches immutable package versions, so clearing the cache is required when a tui.json entry still resolves to an older version.

For standard OpenCode (@latest):

PowerShell:

Remove-Item -LiteralPath "$HOME\.cache\opencode\packages\oc-usage-limits-plugin@latest" -Recurse -Force

macOS/Linux:

rm -rf ~/.cache/opencode/packages/oc-usage-limits-plugin@latest

For OpenCode v2 (@next):

PowerShell:

Remove-Item -LiteralPath "$HOME\.cache\opencode\packages\oc-usage-limits-plugin@next" -Recurse -Force

macOS/Linux:

rm -rf ~/.cache/opencode/packages/oc-usage-limits-plugin@next

Start OpenCode again and it will reinstall the plugin from the existing tui.json entry. If the plugin is no longer configured, run the install command again:

opencode plugin oc-usage-limits-plugin -g

• Dependency conflicts involving @opencode-ai/plugin usually mean OpenCode's package cache contains an older plugin API package. Update OpenCode, clear the cached plugin as above, then retry the install. This package does not publish OpenCode runtime packages as peer dependencies.
• No versions available right after a release means a supply-chain cooldown policy (e.g. min-release-age) is blocking the fresh version. Wait for the cooldown window to pass, or install a previously vetted version instead.

Release Lanes

• Stable releases come from main, use the latest npm dist-tag, and are intended for standard OpenCode.
• OpenCode v2 previews come from opencode-v2, use the next npm dist-tag, and are intended only for OpenCode v2.
• Both lanes use the same package name and oc-usage-limits-plugin/tui entrypoint.
• Releases are staged on npm for manual approval before publication. Stable releases create normal GitHub releases; v2 previews create GitHub prerelease tags/releases.
• The v2 lane remains preview/beta until the package has been validated against the v2 host.

Usage Config

Create ~/.config/opencode/usage-limits.jsonc. The same file lives at examples/usage-limits.jsonc and can be copied verbatim:

{
  "$schema": "https://raw.githubusercontent.com/mynameistito/oc-usage-limits-plugin/main/usage-limits.schema.json",
  "enabled": true,
  "refreshIntervalSeconds": 60,
  "requestTimeoutMs": 10000,
  "showErrors": true,
  "providers": {
    "codex": {
      "enabled": true,
      "label": "Codex",
      "showSidebarBar": true,
      "showFooterBar": true,
      "sidebarWindow": "all",
      "footerWindow": "auto",
    },
    "zai": {
      "enabled": true,
      "label": "ZAI",
      "apiKey": "{env:OC_ZAI_API_KEY}", // Optional fallback when OpenCode auth has no ZAI key
      "authorizationScheme": "raw",
    },
    "synthetic": {
      "enabled": true,
      "label": "Synthetic",
      "apiKey": "{env:OC_SYNTHETIC_API_KEY}", // Optional fallback when OpenCode auth has no Synthetic key
    },
    "minimax": {
      "enabled": true,
      "label": "MiniMax",
      "apiKey": "{env:OC_MINIMAX_TOKEN_PLAN_KEY}", // Optional fallback when OpenCode auth has no MiniMax key
    },
  },
}

Minimal config

If you only need Codex and ZAI with auto-discovered credentials:

{
  "$schema": "https://raw.githubusercontent.com/mynameistito/oc-usage-limits-plugin/main/usage-limits.schema.json",
  "providers": {
    "codex": { "enabled": true },
    "zai": { "enabled": true, "authorizationScheme": "raw" },
  },
}

Disabled providers are hidden:

"providers": {
  "codex": { "enabled": true },
  "zai": { "enabled": false }
}

enabled is the plugin master switch, while each provider's enabled field controls fetching. Provider showSidebarBar and showFooterBar independently control that provider's displays without stopping refreshes. sidebarWindow filters that provider's sidebar windows (all, rolling, daily, weekly, monthly, credits, or other), and footerWindow selects its footer window (auto or one of those kinds). Both display flags default to true; sidebarWindow defaults to all and footerWindow to auto.

Providers

Provider ID	Service	Env var	Auth header	Default base URL
codex	ChatGPT Codex usage	—	Bearer	https://chatgpt.com/backend-api
zai	Z.AI Coding Plan quota	OC_ZAI_API_KEY	raw / Bearer	https://api.z.ai
synthetic	Synthetic quotas	OC_SYNTHETIC_API_KEY	Bearer	https://api.synthetic.new
minimax	MiniMax Token Plan	OC_MINIMAX_TOKEN_PLAN_KEY	Bearer	https://www.minimax.io
qwen	Qwen Token Plan	qwencloud CLI	CLI	—
opencode-go	OpenCode GO usage	OPENCODE_API_KEY	Bearer	https://opencode.ai/zen/go/v1

Synthetic always uses Bearer auth and ignores authorizationScheme.

Set baseUrl on minimax to https://api.minimaxi.com when using the mainland-China region. MiniMax always uses Bearer auth and ignores authorizationScheme.

Credential Lookup

authPath and apiKey are optional overrides. Typical OpenCode users only need enabled: true; label is an optional display override. Credentials are discovered automatically from OpenCode auth and provider defaults. Set apiKey (or authPath to a standalone key file) only when auto-discovery is not enough.

Codex lookup order:

1. OpenCode auth at ~/.local/share/opencode/auth.json, provider openai.
2. Codex auth file from authPath, default ~/.codex/auth.json.

ZAI lookup order:

1. Config authPath, which can point at OpenCode auth JSON or a simple { "key": "..." } / { "apiKey": "..." } JSON file.
2. OpenCode auth at ~/.local/share/opencode/auth.json, provider zai-coding-plan.
3. OpenCode auth provider zai.
4. Config apiKey, including {env:OC_ZAI_API_KEY} references.

Synthetic lookup order:

1. Config authPath JSON file ({ "key": "..." } / { "apiKey": "..." } / { "synthetic": { "key": "..." } }).
2. OpenCode auth at ~/.local/share/opencode/auth.json, provider synthetic.
3. Config apiKey, including {env:OC_SYNTHETIC_API_KEY} references.

MiniMax Token Plan lookup order:

1. Config authPath JSON file ({ "key": "..." } / { "apiKey": "..." } / { "minimax-coding-plan": { "key": "..." } }).
2. OpenCode auth at ~/.local/share/opencode/auth.json, provider minimax-coding-plan, minimax, or minimax-token-plan.
3. Config apiKey, including {env:OC_MINIMAX_TOKEN_PLAN_KEY} references.

Display

Sidebar rows look like:

Usage Limits
codex
  5h: 42% used resets 1h 2m
  weekly: 12% used resets 3d 4h
ZAI
  tokens: 18% used resets 2h
  MCP: 6% used
Synthetic
  5h: 0% used resets 11m
  weekly: 11% used resets 7m
MiniMax
  5h: 10% used resets 2h 56m

Prompt footer shows compact usage when the current session model belongs to a supported provider:

5h: 42% used resets 1h 2m

Provider mapping:

• OpenCode provider openai -> Codex usage.
• OpenCode provider zai-coding-plan -> ZAI token usage.
• OpenCode provider synthetic -> Synthetic usage.
• OpenCode provider minimax-coding-plan -> MiniMax Token Plan usage (prompt footer); minimax is also accepted as an alias.
• OpenCode provider qwen -> Qwen Token Plan usage.
• OpenCode provider opencode-go -> OpenCode GO usage.

Development

bun install
bun run typecheck
bun run test
bun run check
bun run build

The package exposes a TUI entrypoint at oc-usage-limits-plugin/tui for OpenCode's package plugin loader.

Notes

• The refresh interval defaults to 60 seconds.
• The effective minimum refresh interval is 15 seconds.
• Provider work starts in a scoped coordinator after both TUI slots are registered. Disposal interrupts the coordinator and its active provider work.
• Errors are intentionally short and do not include auth tokens or response bodies.
• MiniMax Token Plan returns { model_remains, base_resp }; the per-model current_interval_status and current_weekly_status are treated as 1 = in plan and 3 = not in plan, and a window is hidden when its status is 3 (the API otherwise reports a meaningless 100% remaining for a non-existent bucket).