AutoACCT for OpenClaw

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An OpenClaw skill that turns a receipt image (optionally with a caption) into a structured row in a Google Sheet, with automatic HKD conversion.

Intended to be invoked manually inside OpenClaw today, and wired up to a WhatsApp webhook later.

What it does

1. Reads a receipt / invoice / payment-screenshot image via vision.
2. Extracts: date, merchant, category, amount, currency, payment method, line items, raw OCR, caption note.
3. Converts the amount to HKD at that day's ECB reference rate via frankfurter.app (free, no API key).
4. Appends one row to a configured Google Sheet (14 columns — see schema.md).
5. Replies with the row and flags any field it had to guess.

Install (end users)

The repo bundles the team's Google service-account key, encrypted with AES-256. Ask your admin for one thing: the passphrase (it's in your team's password manager).

Follow the 4 steps below. Takes ~5 minutes.

Not comfortable with the terminal? Use DEPLOY.md instead — same install, but written for non-technical users with an AI agent walking them through.

Don't want to share a service account with the rest of the team? See BYO-KEY.md for how to bring your own — more private, but ~15 minutes of extra GCP setup.

Step 1 — Clone the skill and install Python deps

git clone https://github.com/CharlesZhang2023/AutoACCT.git ~/.openclaw/workspace/skills/AutoACCT
cd ~/.openclaw/workspace/skills/AutoACCT
pip install google-api-python-client google-auth

Step 2 — Decrypt the bundled service-account key

bash scripts/decrypt-key.sh

You'll be prompted for the passphrase. On success the script writes the JSON to ~/.config/gcp/bookkeeping-sa.json (mode 600) and prints the service-account email — copy it; you'll paste it into Step 3.

Step 3 — Create your Google Sheet and share it with the service account

1. Open https://sheets.new (creates a fresh blank sheet).
2. Title it (e.g. My AutoACCT Expenses).
3. Note the tab name at the bottom-left — Sheet1 (English UI) or 工作表1 (Chinese UI). You'll paste it into config.json in Step 4.
4. Click cell A1, then paste this one line (the tabs split the headers across A–N automatically):

   Date	Merchant	Category	Amount	Currency	Amount (HKD)	FX Rate	FX Date	Payment Method	Line Items	Raw OCR	Note	Receipt	Logged At
   

5. Click Share (top right) → paste the service-account email that decrypt-key.sh printed in Step 2 → role Editor → Send (you can uncheck "Notify people").
6. Copy the full URL from your browser's address bar. Something like: https://docs.google.com/spreadsheets/d/1abc...xyz/edit#gid=0 (The script extracts the sheet ID for you — either the full URL or just the bare ID works.)

Step 4 — Write config.json

cd ~/.openclaw/workspace/skills/AutoACCT
cp config.example.json config.json

Open config.json and fill in sheet_id (paste the URL from Step 3.6) and worksheet (the tab name from Step 3.3):

{
  "sheet_id": "https://docs.google.com/spreadsheets/d/1abc...xyz/edit",
  "worksheet": "Sheet1",
  "service_account_path": "~/.config/gcp/bookkeeping-sa.json",
  "hkd_fx_provider": "frankfurter"
}

Common pitfall: if your Google Sheets UI is in Chinese, the default tab is named 工作表1 (not Sheet1). Put "worksheet": "工作表1" exactly. A mismatched tab name throws HTTP 400: Unable to parse range.

Sanity check

echo '{"date":"2026-04-20","merchant":"TEST","category":"Other","amount":1,"currency":"HKD","amount_hkd":1,"fx_rate":1,"fx_date":"2026-04-20"}' | python3 ~/.openclaw/workspace/skills/AutoACCT/scripts/append_row.py

Success looks like: OK 'Sheet1'!A2:N2 and a new row appears in your sheet. Delete the TEST row when you're done.

If you hit an error, see scripts/setup.md for troubleshooting.

Admin setup (one time, done by you before distributing)

See scripts/setup.md for the full admin guide and secrets/README.md for the encryption mechanics. Short version:

1. Create a GCP project, enable Sheets API, create a service account, download the JSON key.
2. Encrypt the JSON with a strong random passphrase and commit secrets/bookkeeping-sa.json.enc to the repo (see secrets/README.md for the openssl one-liner).
3. Store the passphrase in your team password manager. Tell users to follow the 4 install steps above.
4. Rotate the passphrase when team members leave; rotate the underlying GCP key when the passphrase or any decrypted JSON might have leaked.

Use

In an OpenClaw session, drop a receipt image in and say "log this" (or similar). The skill auto-triggers on receipt-image requests — no slash command needed.

Caption is optional; use it to add context (payment method, split, category hint, free-text note).

Files

File	Purpose
SKILL.md	Entry — OpenClaw reads this to invoke the skill
categories.md	Fixed category list (14 categories)
schema.md	Google Sheet column order (A–N)
config.example.json	Template → copy to config.json (gitignored)
scripts/fx_convert.py	Currency → HKD via frankfurter.app
scripts/append_row.py	Writes one row to Google Sheets
scripts/decrypt-key.sh	Decrypts bundled SA key to ~/.config/gcp/
scripts/setup.md	Admin setup guide + troubleshooting
secrets/bookkeeping-sa.json.enc	Team SA key, AES-256 encrypted (safe to commit)
secrets/README.md	How the encryption works + rotation procedures
DEPLOY.md	Step-by-step install guide for non-technical users
BYO-KEY.md	Optional: create your own SA instead of using the shared one

License

MIT © 2026 Knowit