When credits get used
Buyer-side reputation lookups beyond the included quota. Receipts beyond your tier's monthly limit. Watchlist alerts on agents not on your subscription. Public-API queries from the spec verifier. Each call deducts the per-call price (typically $0.001-$0.01 depending on operation).
Per-call pricing
Receipt issuance: $0.001 per receipt. Buyer-side lookup: $0.005 per lookup. Watchlist add: free. Watchlist alert fired: $0.01 per alert. Receipt search query: $0.001 per query. Evidence pack generation: $5 per pack. Standard pay-per-call rates; credit packs amortize them.
Credit pack tiers
$10 → 10,000 issuance credits or 2,000 lookup credits or 1,000 alerts. $25 pack + $2.50 bonus = $27.50 effective. $50 pack + $10 bonus = $60 effective. $100 pack + $25 bonus = $125 effective. Larger packs amortize better.
Why pay-per-call exists
Subscription tiers are wrong for variable-volume usage. A procurement team that does 200 lookups in March (during vendor renewal) and 10 in April (off-cycle) shouldn't pay a monthly subscription. Credit packs let them pay for actual usage. Same for builders with seasonal usage patterns.
Combining subscription + credits
Pro / Enterprise subscription covers your steady-state usage; credits cover overage. Most multi-team enterprises end up on this model: subscription as the operational floor + credits as the flexibility layer.
Buying credits
/settings/billing → Credits → Top up. Stripe checkout. Credits land in your account within seconds. Standard SaaS billing UX.