Spec

Current binding and transport documents, in suggested reading order. Historical versions remain available in the immutable release snapshots.

Status: draft alpha targeting kaspa:testnet-10. Mainnet use remains blocked by the documented readiness gates.

Document	Purpose
`kaspa-x402-v1`	Core binding: common rules for x402 v2 payments on Kaspa — networks, asset, amounts, envelopes.
`kaspa-exact-v2`	Active `exact` binding: default standard-native transfer and optional KIP-10 additive head payment.
`kaspa-batch-settlement-v2`	Active `batch-settlement` profile: singleton genesis, stable covenant identity, A/S/T/V/R, repeated partial claims, top-up, refund, and restart recovery.
`http-profile`	HTTP transport: `PAYMENT-REQUIRED`, `PAYMENT-SIGNATURE`, and `PAYMENT-RESPONSE` flow.
`mcp-profile`	MCP transport: paid tools using the standard `_meta` payment fields.
`facilitator-profile`	Optional self-hosted facilitator: `/supported`, `/verify`, `/settle` compatibility surface.
`errors`	Error reasons: public x402 error codes and mapping rules for Kaspa-local diagnostics.