DeepSeek Balance for DeepSeek Harness

Shows how much DeepSeek Platform balance you have left, in the left sidebar footer just above the account row.

The badge reads ¥12.34 / $12.34 from your signed-in DeepSeek account, refreshes every 60 seconds and when the window regains focus, and opens platform.deepseek.com/usage when clicked. Bonus credit, per-currency breakdown, and the last refresh time appear on hover.

Features

• Remaining balance at a glance at the bottom of the left sidebar, beside the account and Plugins controls.
• Bonus credit separate from paid balance, listed in the tooltip instead of being silently added.
• Live enough: one TanStack Query cache entry refreshes on mount, every 60 seconds, and when the window regains focus or the network reconnects; the Host coalesces requests with a 20-second cache.
• Click through to usage: opens the Platform usage page from the account's own usageUrl.
• Honest states: Sign in when no DeepSeek account is connected, Unavailable when the query fails (click to retry), and no fake zero balance.
• English and Chinese UI, following the Harness language setting.
• No secrets in the browser: the route returns wallet amounts and links only.

Requirements

• DeepSeek Harness 0.2.1-rc.2 (the version this plugin was built against).
• A DeepSeek account signed in through Harness Settings → Account. The balance comes from the Platform account session; an API-key-only setup has no balance to read.
• Network access from the Harness Host to platform.deepseek.com.

Install

git clone https://github.com/jeremytenjo/dsh-plugin-balance-indicator.git
dsh plugin --profile desktop add ./dsh-plugin-balance-indicator

Restart the Host or reload the page, then start or open a session. The badge appears at the bottom of the left sidebar, above the account row. Replace desktop with the profile name shown by dsh --profile <name> --dump-config.

Manual installation is also possible: add the package directory to the profile's dependencies as a link:, add it to dsh.profile.bundles, and run the profile's package install. Prefer the plugin command; it owns those files.

Usage

State	Footer badge	Click
Signed in, balance loaded	¥12.34	Opens the Platform usage page
Balance with bonus credit	¥12.34 (hover for bonus lines)	Opens the Platform usage page
Not signed in	Sign in	—
Query failed	Unavailable	Retries
First load	Balance…	—

Hovering shows every wallet currency, bonus wallets with a positive balance, the last successful refresh time, and the click hint.

The badge uses the sidebar footer's own 42px action row, radius, and theme tokens, so it inherits light and dark themes without configuration. The sidebar footer is a single row shared with the shipped Plugins launcher: the balance takes only its content width and sits first, and it stays hidden while the sidebar is collapsed to the 56px rail (the cached balance reappears immediately on expand).

How it works

client.js  ── GET /__dsh/deepseek-balance ──▶  index.js
                                               │
                                               ├─ ctx.deepseekAccount.getState()
                                               └─ ctx.deepseekAccount.getBalance(client)
                                                       │
                                                       ▼
                                          platform.deepseek.com

index.js is the Host half. It registers one exact loopback route and calls the Harness account service, which already owns the Platform credential and the /api/v0/users/get_user_summary query. The plugin never reads the credential store, never logs a token, and returns only:

{
  "ok": true,
  "status": "ready",
  "wallets": [{ "currency": "CNY", "balance": "12.34" }],
  "bonusWallets": [{ "currency": "CNY", "balance": "2.00" }],
  "links": {
    "usageUrl": "https://platform.deepseek.com/usage",
    "topUpUrl": "https://platform.deepseek.com/top_up"
  },
  "fetchedAt": 1790000000000
}

The route accepts loopback requests only, rejects a foreign Origin and cross-site fetches, sends cache-control: no-store, and caps the wallet list and string lengths. Account query failures are not cached, so a retry or the next poll recovers; successful reads are cached for 20 seconds to coalesce multiple windows.

client.js is the browser half. It registers a lazy factory with the package name, adds a sidebar.footer.action entry with order -1 (before the shipped Plugins launcher), and registers its English and Chinese strings through the client locale service. The slot passes the sidebar's wide flag: the badge renders only while the sidebar is expanded, because the collapsed 56px rail already holds the Plugins launcher.

The badge's state lives in one TanStack Query entry keyed by language and timezone, with the route response as its data:

• staleTime: 20s matches the Host cache, so a focus refetch only asks again once that cache could have moved.
• refetchInterval: 60s polls while the window is visible; refetchOnWindowFocus and refetchOnReconnect cover the gaps.
• A click on the failure state calls refetch() with the route's refresh=1 flag; the query's own retry loop is disabled so a failure is reported immediately instead of after backoff.
• A response whose Host query failed (status: "failed") is cached as data, not as an error, so the failed state appears immediately and the 60-second poll recovers on its own. A network error after a successful load keeps the last known amount visible instead of replacing it.
• The QueryClient is created per enabled plugin instance, provided to the badge's subtree, and cleared in the effect cleanup when the plugin is disabled. The cached entry survives collapsing the sidebar, so expanding again shows the last amount while any stale fetch runs.

src/client.js is the editable source. scripts/build-client.mjs bundles it with esbuild into client.js, keeping React external so the page's shared module table supplies it and TanStack Query bundled in, since the table does not provide it. Do not edit client.js directly.

Configuration

None. The Platform origin belongs to the Harness account provider; this plugin follows it rather than hard-coding an API host. The usage fallback is https://platform.deepseek.com/usage and is used only if the account supplies no link.

Development

pnpm install
pnpm run build
node --check index.js
node --check client.js

pnpm install brings the build toolchain. esbuild is build-only; TanStack Query is compiled into client.js rather than loaded as a separate page module. pnpm run build bundles src/client.js into the module-loader artifact client.js. Editing the Host half or src/client.js and reloading the plugin (Settings → Plugins → disable/enable) or restarting the Host is enough after a build. The locale metadata in locale/*.json supplies the Plugin Manager title, description, and icon.

Files:

• index.js — Host route, cache, account calls, origin checks.
• src/client.js — sidebar footer badge source: query definition, formatting, tooltip, locale dictionaries.
• scripts/build-client.mjs — esbuild bundle wrapped in the __ModuleLoader__ factory.
• client.js — generated browser bundle; do not edit.
• cordis.patch.yml — inserts the deepseek-balance-indicator row.
• locale/en.json, locale/zh.json — Plugin Manager metadata.
• icon.svg — original wallet icon.

Security and privacy

The balance is read through the existing Harness account session. This plugin adds no credential storage, no cookies, no analytics, and no third-party requests; the browser talks only to its own loopback Harness origin. Amounts and currency codes leave the Host, but account identity, profile, token, and masked contact details do not.

Limitations

• The account session is required; API-key-only sessions show Sign in.
• Only the Platform wallet summary is shown. Per-model spend and request history live on the usage page.
• With multiple currencies, the badge shows the currency matching the UI language (CNY for Chinese, USD otherwise) and lists the rest in the tooltip.
• Refresh is intentionally slow to be gentle on the Platform API; use the click-through for an exact current view.
• The badge lives in the sidebar footer and is hidden while the sidebar is collapsed to the rail; it needs an expanded sidebar, not an active session.
• The footer is one row shared with the Plugins launcher, so the launcher's right-aligned run count can be clipped by the badge's width in a narrow sidebar.

License

MIT © 2026 Jeremy Tenjo