token-usage-counter

Token Usage Counter for DeepSeek Harness

Persistent provider-reported token usage statistics for DeepSeek Harness. The
plugin keeps uncached input, cache read, cache write, and output usage in
separate buckets, and exposes cumulative, daily, per-session, and per-model
views.

Features

Install

Install the published DSH Bundle into the web profile:

dsh plugin --profile web add -w --config.auto-install-peers=false dsh-token-usage-counter
dsh web

The Bundle is additive: it mounts only the plugin-owned token-usage-counter
entry and leaves the built-in usage accumulator and page enabled.

Version 0.4.0 moves persistence from the shared usage-stats namespace to the
plugin-owned dsh-token-usage-counter namespace. Existing 0.3.x totals are not
silently migrated because the shared namespace belongs to the built-in plugin;
the new counter starts with an independent snapshot after the upgrade.

Local development

From this checkout:

dsh web --patch ./cordis.yml

The local overlay mounts src/index.ts without replacing built-in components.
For a manual composition, add only the plugin-owned entry:

- insert:
    - id: token-usage-counter
      name: './src/index.ts'

Compatibility

• Node.js: 22.13.0 or newer.
• DSH: 0.1.2-alpha.3 through 0.1.2-alpha.5.
• Profile: web.
• Exact per-release results and disposable-profile evidence are recorded in
  docs/VERIFICATION.md.

Build

npm install --ignore-scripts --legacy-peer-deps --no-package-lock
npm run build
npm run verify

The generated host and client bundles are committed under lib.

Counting rules

The plugin listens to the durable session event stream:

• assistant/message.usage is counted once.
• compaction/summary.usage is counted as one provider call.
• A usage-only assistant/chunk is held until its matching assistant/message.
• When a chunk and final message describe the same turn and step, the final
  value replaces the early sample.
• Failed requests, retries, and fork seed history are not counted twice.

API

The plugin provides ctx.tokenUsageCounter:

ctx.tokenUsageCounter.getSummary()
ctx.tokenUsageCounter.getSession(sessionId)
ctx.tokenUsageCounter.getModel(provider, model)
ctx.tokenUsageCounter.formatSummary()

Links

• npm: https://www.npmjs.com/package/dsh-token-usage-counter
• GitHub: https://github.com/Mu-scorpio/token-usage-counter
• DSH Bundle documentation: https://github.com/deepseek-ai/deepseek-harness/blob/master/docs/user/develop/basic/publish.md

License

MIT