Pricing, units and limits

This page is the public economics source of truth. If another page, SDK, bridge or contract disagrees with it, that component is not release-compatible.

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Canonical route models

AIFP-1 is gross-inclusive. The protocol fee is deducted from the quoted gross amount; it is never added on top. AIFP-2/x402 has a temporary 0% AiFinPay protocol fee for the current launch period. No expiry is encoded yet, so a later change requires a versioned economic decision and coordinated backend/SDK/docs release.

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AIFP-1 reference tiers

One billing unit is $0.0005.

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Exact 6-decimal vectors

Stablecoin math is integer math. The current regression vectors are: The protocol fee is floor(gross × 100 / 10,000); merchant receives the remainder and creator receives zero. An amount too small to produce a non-zero AIFP-1 protocol fee must be rejected rather than silently changing economics.

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Batches and receipts

A quote states the gross batch amount. One on-chain settlement purchases the batch; a signed bearer receipt meters billing units locally at the merchant. Receipt scope and quota do not change the economic split. The reference minimum batch is $0.10:

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Limits

Per-payment and daily operator caps are checked before signing. A model/tool argument may tighten an operator ceiling but must not increase it. Unknown asset price, invalid amount, expired quote or split mismatch is a blocking state.

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Production gate

A listed network or source implementation is not automatically payment-live. Before signing, the release must independently pin and verify:

1. route class and chain ID;
2. B2BSplitter v1.3 address and exact runtime code hash;
3. on-chain BPS profile (AIFP-1 100/0, AIFP-2 0/0);
4. merchant/provider target and asset metadata;
5. quote expiry and exact gross calldata;
6. paid end-to-end evidence for that release;
7. no unresolved Critical/High fund-loss audit issue.

Until every item passes, settlement stays disabled/fail-closed.