feat: add decorator/HOF API for server-side payment configuration#4
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feat: add decorator/HOF API for server-side payment configuration#4
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Add simplified decorator and higher-order function APIs for configuring x402 payment requirements on server routes, reducing boilerplate while preserving full PaymentOption flexibility. TypeScript: withPayment() HOF for Express, Hono, and Next.js that wraps a PaymentOption into a wildcard RouteConfig and returns framework middleware. Python: @x402_app.pay() decorator for Flask and FastAPI that attaches payment config to route handlers, with init_app() scanning decorated routes to build the middleware automatically. Also fixes a bug where the assets field in PaymentOption was not passed through to ResourceConfig in buildPaymentRequirementsFromOptions.
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| using Python decorators, as an alternative to the routes dict approach. | ||
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| from ..types import PaymentOption, RouteConfig |
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Summary
withPayment()HOF for Express, Hono, and Next.js — wrapsPaymentOption | PaymentOption[]into framework middleware with a single function call@x402_app.pay()decorator for Flask and FastAPI — attaches payment config to route handlers,init_app()scans decorated routes and builds middleware automaticallyassetsfield fromPaymentOptionthrough toResourceConfiginbuildPaymentRequirementsFromOptions(both TS and Python)Changes
x402ResourceServer.ts,x402_http_server.pyassetstoResourceConfigexpress/withPayment.ts,hono/withPayment.ts,next/withPayment.tswithPayment()for each frameworkdecorators/flask.py,decorators/fastapi.pyx402_appclass with@pay()decoratorTest plan
pnpm lint/pnpm build/pnpm test— all green (40/40 tasks)pytest— 730 passed,ruff check/ruff format --checkclean