yyb16yyb-hub/dsh-deepseek-usage

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A DeepSeek Harness plugin that shows real-time DeepSeek API usage.

• 💰 Account balance — polls the DeepSeek /user/balance endpoint (default every 30s): total / granted / topped-up balance and availability, with multi-key aggregation (apiKeys)
• 📊 Usage stats — real-time request counts and tokens (input / output / cache-read / cache-write / reasoning) via the llm/stream waterfall, in three windows: total / today / last-60s, with the cache-hit rate
• 💾 Persistent history — daily usage survives restarts (~/.dsh/deepseek-usage/usage.json), powering the trend charts and CSV exports
• 💸 Estimated cost — per-model pricing (built-in deepseek-chat / deepseek-reasoner table, overridable via config), computed per window, with peak/off-peak pricing (offPeakHours / offPeakDiscount)
• 🖥️ Web UI dock — a live stats line under the composer (conversation.composer.dock), auto-refresh + manual refresh
• ⚠️ Low-balance alerts — dock turns amber below the threshold (default 20) and red below threshold/5, with one browser notification per threshold crossing; optionally block LLM requests while below the threshold (blockOnLowBalance)
• 📋 Settings usage panel — settings.section seat: balance card + per-key accounts, three-window usage, in-panel config editor (writes back through the host), history heatmap & 30-day bars, per-model pricing table, per-session usage table, and CSV exports
• 🛠️ Model tool — deepseek_usage, so the agent can query balance and usage on demand
• ✅ Tests & CI — vitest unit tests and a GitHub Actions pipeline (typecheck + test + build)

Install

From GitHub (recommended)

dsh plugin --profile web add github:yyb16yyb-hub/dsh-deepseek-usage

⚠️ First install requires build authorization: pnpm ≥ 10 refuses to run prepare scripts of git-hosted dependencies (the plugin builds lib/ from source at install time). The first add fails with a hint — copy the exact package key pnpm prints into that profile's pnpm-workspace.yaml, then re-run:

allowBuilds:
  dsh-deepseek-usage: true

Pin a commit for reproducible installs: dsh plugin --profile web add github:yyb16yyb-hub/dsh-deepseek-usage#<sha>.

Local directory / tarball

dsh plugin --profile web add /path/to/dsh-deepseek-usage     # local dir (pre-built lib/)
dsh plugin --profile web add ./dsh-deepseek-usage-0.1.0.tgz  # pnpm pack output

Restart dsh web after installing — the client module table is scanned at boot.

Uninstall:

dsh plugin --profile web remove dsh-deepseek-usage

Configuration

The API key is resolved in this order (re-resolved on every poll, so changes take effect immediately):

1. Plugin config apiKey
2. The dsh credentials seam (ctx.credentials): process env → ~/.dsh/.credentials.yaml → project .env → user .env. A DeepSeek key entered on the Web Settings → Models page lands in ~/.dsh/.credentials.yaml, which this plugin picks up automatically — no extra config needed
3. A stored apiKey in the registered llm-deepseek settings section (if any)

Override the plugin row in the profile's cordis.patch.yml to configure:

- id: deepseek-usage
  config:
    apiKeyEnv: DEEPSEEK_API_KEY
    apiKeys: []                # extra API keys whose balances are aggregated
    pollIntervalMs: 60000      # balance poll interval (ms, min 5000)
    balanceTimeoutMs: 10000    # balance fetch timeout (ms)
    showBalance: true
    showTokens: true
    showCost: true
    alertThreshold: 20         # low-balance alert threshold (account currency; 0 = off)
    blockOnLowBalance: false   # block LLM requests while balance < alertThreshold
    maxSessions: 200           # max sessions kept in the per-session drill-down
    offPeakHours: [0,1,2,3,4,5,6,7]   # local hours priced as off-peak
    offPeakDiscount: 0.5       # cache-miss price multiplier in off-peak hours
    pricing:
      deepseek-chat:
        input: 2               # ¥ / 1M tokens
        output: 3
        cacheRead: 0.5
      deepseek-reasoner:
        input: 4
        output: 16
        cacheRead: 1

Cost is an estimate: the built-in pricing table reflects common public pricing — always check the latest official DeepSeek prices, and override via pricing or the settings-panel editor. Off-peak pricing applies the discount to cache-miss input/output prices only (matching DeepSeek's policy), priced at the current hour.

Settings-panel edits (threshold, poll interval, display toggles, block toggle, off-peak window, pricing) are validated host-side and persisted — they override matching cordis.yml values until reset. Secrets (apiKey/apiKeys) are never accepted through the editor or persisted.

Web UI

• Composer dock — balance · today's requests · tokens (with cache-hit %) · estimated cost (today) · last-updated time, auto-refresh every 30s (follows the host pollIntervalMs), with a manual refresh button.
• Low-balance alert — below alertThreshold the dock turns amber with a ⚠ mark, below threshold/5 it turns red; crossing the threshold fires one browser notification (only when Notification.permission === 'granted' — the plugin never prompts for permission). With blockOnLowBalance enabled, LLM requests fail with a clear message while the balance is below the threshold.
• Settings → "DeepSeek usage" panel (open the settings panel from the sidebar): balance card with per-key accounts (multi-key), three-window usage, history heatmap + 30-day bars, an in-panel config editor, per-model pricing & usage table, a per-session usage table, and CSV exports for history and sessions.

Data comes from the same-origin endpoints GET /dsh-deepseek-usage (?refresh=1 forces a balance re-poll) and POST /dsh-deepseek-usage/config (editor writes). API keys stay on the host side and never reach the browser. Daily history is persisted to ~/.dsh/deepseek-usage/usage.json.

Model tool

The agent can call deepseek_usage:

• no arguments: balance + usage summary for all windows
• scope: total / today / rolling to pick a window

Development

pnpm install
pnpm typecheck   # tsc --noEmit
pnpm test        # vitest unit tests (stats + cost)
pnpm build       # esbuild → lib/index.js (host half) + lib/client.js (browser half)

Structure

src/
├── index.ts        # host half: apply(), llm/stream hook, block gate, tool, HTTP routes
├── balance.ts      # DeepSeek /user/balance client + multi-key poller
├── stats.ts        # usage tracking (total/today/rolling windows, per-model, per-session, restore/export)
├── cost.ts         # pure pricing/cost logic (peak/off-peak) — unit tested
├── persist.ts      # JSON persistence (atomic writes, $DSH_HOME/deepseek-usage/usage.json)
├── config.ts       # schemastery config schema
└── client/
    ├── index.ts    # browser half: locale + composer.dock / settings.section registration
    ├── api.ts      # shared: payload types, fetch, config save, CSV export, formatters
    ├── UsageDock.tsx            # composer dock (with low-balance alert)
    ├── UsageSettingsSection.tsx # settings panel (balance/accounts/usage/history/editor/sessions)
    └── locales.ts  # zh/en dictionaries

Build notes

• The host half keeps @deepseek-ai/* external so they resolve from the profile's node_modules (single cordis runtime identity)
• The browser half externals match the platform module table in packages/client/web/src/platform.ts (react, cordis, slots, …); everything else is inlined, and the artifact is wrapped in window.__ModuleLoader__.load({ id, factory }) for the web shell's module loader

Scope notes

• Theming — the UI uses inline styles that inherit the app's text colors and adapt to dark/light themes; per-theme CSS variables are not consumed (the harness does not expose a public theme-token API to plugins today).
• Screenshots — the README has no in-UI screenshots yet; grab a few after installing if you'd like to add them.
• Multi-provider — intentionally out of scope: this plugin tracks DeepSeek usage only; OpenCode Go / Moonshot / Kimi monitoring would live in a separate plugin.

Security

Balance polling uses the same API key as LLM requests; keys are never sent to the browser and never persisted by the plugin (only non-secret config overrides are). As with any third-party plugin, review the source before installing.