card-wallet

name: card-wallet description: Track credit card benefits (use-it-or-lose-it credits) and optimize which card to use per purchase category. Manages both household cardholders.

Card Wallet

The purchase-optimizer half merges in the card-optimizer skill by scottfo on ClawHub. Spratt's contribution: unified the data store into SQLite (replacing the JSON file), added multi-cardholder support, and integrated quarterly category management with the benefit-expiry tracker.

Two functions in one skill:

1. Benefit tracking — expiring credits, Saturday cron reminders, mark used/skipped
2. Purchase optimizer — "which card for groceries?" based on reward rates, caps, and network acceptance

Database

~/.config/spratt/cards/cards.sqlite

Tables: cards, benefits, usage, benefit_changes, reward_rates, quarterly_categories, spending_estimates

Part 1: Benefit Tracking

Check what's pending for someone

sqlite3 ~/.config/spratt/cards/cards.sqlite "
  SELECT b.name, b.amount, b.cycle, u.period_key, c.card_name
  FROM usage u
  JOIN benefits b ON u.benefit_id = b.id
  JOIN cards c ON b.card_id = c.id
  WHERE u.status = 'pending' AND c.holder = 'manan'
  ORDER BY u.period_key
"

Mark a benefit as used

When someone says "used the Uber credit" or "used Saks", match the benefit by name and mark the current period:

sqlite3 ~/.config/spratt/cards/cards.sqlite "
  UPDATE usage SET status = 'used', acknowledged_at = datetime('now')
  WHERE benefit_id = (
    SELECT b.id FROM benefits b JOIN cards c ON b.card_id = c.id
    WHERE b.name LIKE '%Uber%' AND c.holder = 'manan' AND b.active = 1
  )
  AND period_key = '2026-04'
  AND status = 'pending'
"

Confirm back: "Marked AMEX Uber Cash as used for April."

Mark a benefit as skipped

sqlite3 ~/.config/spratt/cards/cards.sqlite "
  UPDATE usage SET status = 'skipped', acknowledged_at = datetime('now')
  WHERE benefit_id = ? AND period_key = ? AND status = 'pending'
"

Deactivate a benefit

sqlite3 ~/.config/spratt/cards/cards.sqlite "
  UPDATE benefits SET active = 0, updated_at = datetime('now') WHERE id = ?
"

Matching user intent

Users will say things loosely. Match by keyword against benefit name and card name:

• "used uber" → Uber Cash benefit on AMEX Platinum
• "used the saks credit" → Saks Fifth Avenue on AMEX Platinum
• "used doordash" → could be Chase Sapphire Reserve ($5/mo) or Chase Freedom ($10/qtr) — ask which
• "activated chase freedom" → 5% Rotating Categories, mark as used for current quarter
• "skip hotel credit" → Hotel Credit (FHR/THC), mark as skipped

Always compute the correct period_key from today's date:

• Monthly: YYYY-MM (e.g., 2026-04)
• Quarterly: YYYY-Q# (e.g., 2026-Q2)
• Semi-annual: YYYY-H# (e.g., 2026-H1)
• Annual: YYYY (e.g., 2026)

Part 2: Purchase Optimizer

"Which card for X?"

When someone asks which card to use for a purchase:

1. Map to category. Match the merchant/purchase to a reward category:

   • Groceries/supermarket → groceries (not tracked yet — use Apple Pay 2% fallback)
   • Restaurant/dining/eating out → dining
   • Gas/fuel → gas
   • Amazon/Whole Foods → amazon
   • Travel/flights/hotels → travel, flights_direct, hotels_amex_travel, etc.
   • Apple Store/subscriptions → apple
   • Drug store/pharmacy → drugstores
   • Streaming services → may be a quarterly rotating category

2. Query reward rates:

   SELECT c.card_name, c.network, r.rate, r.cap_amount, r.rate_after_cap,
          c.point_valuation_cpp, c.holder
   FROM reward_rates r
   JOIN cards c ON r.card_id = c.id
   WHERE r.category = :category AND c.active = 1 AND c.holder = :holder
   ORDER BY (r.rate * COALESCE(c.point_valuation_cpp, 1.0) / 100.0) DESC
   

3. Check quarterly categories for Chase Freedom Flex:

   SELECT categories, activated FROM quarterly_categories
   WHERE card_id = 3 AND year = :year AND quarter = :quarter
   

   If the purchase category matches this quarter's rotating categories AND the user has activated, Chase Freedom earns 5%.

4. Cap awareness. If the top card has a cap (cap_amount is not null), note it. If near cap exhaustion, recommend the next best card.

5. Network acceptance. If top card is AMEX (network = 'amex'), warn about acceptance and provide the best Visa/Mastercard fallback:

   • "Use AMEX Platinum for 5x on flights. If Amex isn't accepted, fall back to Chase Sapphire Reserve for 3x."
   • Costco: Visa only — never recommend AMEX for Costco.

6. Apple Pay fallback. For any purchase where the merchant accepts Apple Pay and no card earns more than 2%, the Apple Card at 2% via Apple Pay is the best default.

Category matching

Map fuzzy user language to categories:

• "groceries", "grocery store", "supermarket", "Kroger", "QFC", "Safeway" → groceries
• "food", "restaurant", "eating out", "dinner" → dining
• "gas", "fuel", "charging", "EV" → gas
• "Amazon", "Whole Foods" → amazon
• "pharmacy", "CVS", "Walgreens", "Rite Aid" → drugstores
• "Costco" → special: Visa only, no AMEX. Check if quarterly rotating includes warehouse.
• "Apple Store", "iCloud", "Apple subscription" → apple
• "travel", "flight", "hotel", "Airbnb", "car rental" → travel (then check specific sub-categories)

Add a new card

sqlite3 ~/.config/spratt/cards/cards.sqlite "
  INSERT INTO cards (holder, card_name, issuer, network, annual_fee, reward_type, point_valuation_cpp)
  VALUES ('manan', 'New Card', 'issuer', 'visa', 0, 'cashback', NULL)
"

Then add reward_rates for each category the card earns on.

Add reward rates

sqlite3 ~/.config/spratt/cards/cards.sqlite "
  INSERT INTO reward_rates (card_id, category, rate, cap_amount, cap_period, rate_after_cap)
  VALUES (?, 'groceries', 4.0, 25000, 'yearly', 1.0)
"

Part 3: Quarterly Management

The quarterly_categories table tracks Chase Freedom Flex (and any future rotating-category cards) per quarter.

Check current quarter

SELECT categories, activated FROM quarterly_categories
WHERE card_id = 3 AND year = 2026 AND quarter = 2

Activate a quarter

When user says "activated chase freedom":

UPDATE quarterly_categories SET activated = 1, activated_at = datetime('now')
WHERE card_id = 3 AND year = 2026 AND quarter = 2

Also mark the benefit as used in the usage table (same as before).

Add next quarter's categories

The quarterly cron (1st of Jan/Apr/Jul/Oct) searches the web and inserts:

INSERT INTO quarterly_categories (card_id, year, quarter, categories)
VALUES (3, 2026, 3, '["gas", "ev_charging", "select_streaming"]')

Part 4: Annual Fee ROI (on request)

Only when user asks "is this card worth keeping?" or "card ROI":

1. Read spending_estimates for monthly spend per category.
2. For the target card, calculate annual bonus rewards vs. a 2% flat baseline:
   • For each category: (card_rate - 2%) × annual_spend × point_value_cpp / 100
   • Sum all categories = bonus value
   • Net value = bonus value - annual_fee
3. If net value < 0, suggest downgrading.

Populate spending estimates only when user provides them:

INSERT OR REPLACE INTO spending_estimates (category, monthly_amount) VALUES ('dining', 500);

Tone

You are Spratt. These are the household's finances — handle them with quiet competence and your usual dry wit. Examples:

• Marking used: "Very good, sir. The Saks credit is accounted for — $50 well spent, one hopes. 🧾"
• Marking skipped: "The hotel credit shall go unclaimed this year. A pity, but duly noted. 📝"
• Checking status: "Your current obligations, sir:" followed by a tidy list (💸 pending, ✅ used, ⏭️ skipped)
• Purchase recommendation: "For groceries, sir: Apple Card via Apple Pay at 2%. None of your cards offer a dedicated grocery rate, I'm afraid — though if the Freedom's quarterly categories include groceries, that changes the calculus considerably."
• Ambiguous match: "You have DoorDash credits on two cards — the Sapphire Reserve ($5/mo) and the Freedom ($10/qtr). Which shall I mark, sir?"

Use emojis sparingly. Never gush.

Important

• NEVER DELETE rows from usage. Only UPDATE status.
• If no pending row exists for the current period, INSERT one first, then update it.
• The auto_applied benefits (Walmart+, CLEAR) don't get usage rows from the Saturday check. If someone asks about them, they're auto-applied — just confirm.
• When adding a new card, always add both benefit rows AND reward_rate rows.
• Multi-holder: always check c.holder when querying. Manan has 5 cards, Harshita has 1.