feat: migrate to x402 v2 protocol format#9
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rawgroundbeef merged 7 commits intomainfrom Feb 1, 2026
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Normalize all 402 responses to x402 v2 format: replace maxAmountRequired with amount, add maxTimeoutSeconds, include x402Version and accepts in all error responses (verify/settle failures), and move resource/description to the response envelope. Also adds billing-arcade demo. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Cover createPaymentMiddleware (Express) and honoPaymentMiddleware (Hono) with 14 tests: 402 responses, v1→v2 normalization, verification/settlement failures, refund protection, and multi-network accepts. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
pnpm/action-setup@v4 conflicts when both the action's `version` key and package.json's `packageManager` field specify a version. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Publishes @openfacilitator/core, sdk, and server to npm when their package.json version changes on main. Compares local version against the published version and only publishes if they differ. Requires NPM_TOKEN repository secret. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Breaking change: middleware 402 responses now use x402 v2 format with `accepts` array and `amount` instead of `maxAmountRequired`. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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Summary
maxAmountRequiredwithamount, addsmaxTimeoutSeconds, and ensuresx402Version: 2+acceptsare included in all error responses (verify/settle failures), not just the initial 402acceptsarray construction before the payment header check so it's available for all 402 response paths; normalizes v1 → v2 field names in the accepts outputresource,description, andoutputSchemafields toPaymentRequirementsV2; makesextraoptionalmaxAmountRequired→amountacross facilitator, public, and stats routes; movesresource/descriptionto the response envelope levelTest plan
turbo lint)vitest run— 57 tests)/pay/:productIdincludex402Version: 2,acceptswithamountfield, andresourcein envelopex402Versionandaccepts🤖 Generated with Claude Code