CardBuddyA year of agent purchases, with and without CardBuddy
The same shopping agent, the same cards and the same purchases. One pays with the default card every time; the other uses CardBuddy.
Rewards by category
Where the extra comes from. Where the bars match, the default card was already the best.
| Category | Spend | CardBuddy pays with | Rewards | Default | CardBuddy |
|---|---|---|---|---|---|
Three mistakes the agent made
| What happened | Amount | Without CardBuddy | With CardBuddy |
|---|
How this was worked out
Reproducible with node sim/simulate.mjs. The full method is in docs/SIMULATION.md.