Free, open-source, local-first GHG accounting for the desktop. Import your bills, let the AI extract the activity data, and produce an ISO 14064-1 inventory report — entirely on your own machine. No account, no cloud, no subscription.
Licensed under the MIT License. Runs fully offline; your data never leaves your device.
Grab the latest macOS / Windows build from the releases page — or visit carbonink.xyz. No activation key required.
- Inventory — emission sources, activity data, and pinned emission factors with audit-grade calculation snapshots (Scope 1 / 2 / 3).
- AI extraction — pull activity data from utility bills, fuel receipts, freight, travel, and purchase documents (bring your own LLM API key).
- Questionnaires — fill customer/rating-agency disclosure forms from your inventory (outbound), and collect supplier Scope 3 Cat 1 data (inbound).
- Reports — one-click ISO 14064-1 inventory report (PDF).
- MCP — exposes your inventory to Claude / Cursor / Pi via a built-in MCP server.
pnpm workspace; the desktop app lives in desktop/.
pnpm install
pnpm --filter carbonink dev # run the Electron app
pnpm --filter carbonink test # vitest
pnpm --filter carbonink build # production build (electron-builder)See AGENTS.md for repo conventions and docs/ for the
design specs, plans, and roadmap.
| Path | What |
|---|---|
desktop/ |
the Electron app (carbonink) |
cloud/web/ |
the marketing site (carbonink.xyz) |
docs/ |
specs, plans, research, roadmap |
(cloud/worker/ — the old license/payments API — is retired; see its README.)