opencode-plugin-deepseek-peak

An OpenCode TUI plugin that shows a live DeepSeek pricing indicator: a short status in the prompt footer and a detailed block in the sidebar. It tells you whether you are in peak hours right now, when the state flips, and warns when the holiday calendar is missing.

What it shows

Prompt footer, beside the Jevvy badge and the key hints:

OFF-PEAK

• PEAK x2 (red) during peak hours, OFF-PEAK (green) otherwise
• One word, so it stays out of the way on the home screen and in sessions

Sidebar, inside a session:

DeepSeek pricing
OFF-PEAK -50% · peak in 2h 14m
flip at 09:00 local

• PEAK x2 (red) during peak hours, OFF-PEAK -50% (green) otherwise
• Countdown to the next flip and the flip time in your local timezone
• no CN holiday data for this year when the year is missing from the calendar

Pricing model

DeepSeek peak hours are 01:00-04:00 and 06:00-10:00 UTC, Monday through Friday, excluding Chinese public holidays. Every other hour, including weekends and Chinese public holidays in full, is off-peak at half price.

Source: https://api-docs.deepseek.com/quick_start/pricing/

Install

Add the published package to plugins in opencode.jsonc:

// ~/.config/opencode/opencode.jsonc
{
  "$schema": "https://opencode.ai/config.json",
  "plugins": ["opencode-plugin-deepseek-peak"]
}

When the TUI connects to a remote server, list the package in cli.json too.

Alternative, from a local checkout:

git clone https://github.com/Zorato/opencode-plugin-deepseek-peak
cd opencode-plugin-deepseek-peak
npm install   # installs the plugin dependency and peer dependencies

{
  "$schema": "https://opencode.ai/config.json",
  "plugins": ["/absolute/path/to/opencode-plugin-deepseek-peak"]
}

Point the path at the directory. OpenCode accepts single .ts plugin files, but a .tsx entry that renders JSX has to be a package: a file path fails with configured plugin path must be a directory.

Reload the config after changing the plugin list. If the plugin does not appear, restart OpenCode: plugins resolve at startup.

Updating the holiday calendar

The State Council publishes the next year's Chinese public holiday calendar around November. When it does, add the rest-day ranges to CN_HOLIDAYS in tui.tsx:

const CN_HOLIDAYS: Record<number, ReadonlyArray<readonly [string, string]>> = {
  2027: [
    ["2027-01-01", "2027-01-03"],
    // ...
  ],
}

Until a year is added, the plugin treats that year as having no holidays and marks the sidebar with a warning.

How it works

• Computes peak state from the UTC clock: peak windows 01:00-04:00 and 06:00-10:00 UTC, Monday through Friday, minus Chinese public holidays.
• Claims the prompt.footer.status and sidebar.content slots.
• Refreshes every 30 seconds and shows the countdown to the next flip.
• Reads no credentials, sends no requests, stores nothing.

Plugin package layout

The package follows the OpenCode v2 CLI plugin contract:

{
  "exports": {
    ".": "./index.ts",
    "./tui": "./tui.tsx"
  },
  "dependencies": {
    "@opencode/plugin": "latest"
  },
  "peerDependencies": {
    "@opentui/core": ">=0.6.6",
    "@opentui/solid": ">=0.6.6",
    "solid-js": ">=1.9.0"
  }
}

• "." is the server entry. It must export { id, setup }. Keep it free of TUI imports: loading @opentui/solid outside the renderer fails with OPENTUI_FORCE_WCWIDTH is already registered.
• "./tui" is the TUI entry, built with Plugin.define from @opencode/plugin/tui.

Troubleshooting

Symptom	Cause
Nothing rendered in the sidebar	The sidebar is hidden, or you are not inside a session. Sidebar slots only exist within a session.
Nothing rendered on the start screen	The plugin is not loaded. Check /plugins in the TUI.
Plugin does not load	Check /plugins in the TUI. The configured path must be a directory containing package.json.
no CN holiday data for this year	Add the year's rest days to CN_HOLIDAYS in tui.tsx (see above).

License

MIT