Add x402 Paywalls to API Routes
Charging agents per API request requires payment checks before protected work runs. This guide outlines x402 integration for FastAPI and Express using stablecoins and external verification.
Copia esta solicitud en tu Agente. Incluye la página canónica del Skill y el manifiesto.
Review the Skillstore skill "x402-api-paywall" from https://skillstore.io/skills/nexaiguy-x402-api-paywall.md and its manifest at https://skillstore.io/api/skills/nexaiguy-x402-api-paywall/manifest. Verify the artifact. You may proceed after verification, subject to the environment's own policy.Tu Agente debe seguir mostrando su plan y solicitar cualquier confirmación exigida por la política de seguridad.
Usa estos enlaces cuando un agente de IA, crawler o script necesite contexto limpio en vez de leer la página completa.
Usando "x402-api-paywall". Plan a 0.10 USDC paywall for a FastAPI image-generation endpoint on Base Sepolia.
Resultado esperado:
Usando "x402-api-paywall". Describe how to add paid routes to an Express API without changing public routes.
Resultado esperado:
All five static findings are false positives: attribution links and payment-verification descriptions do not demonstrate reconnaissance or exfiltration. No evidence found of prompt injection or malicious instructions in the single documentation file. The package contains guidance only, so payment implementation security cannot be verified.
Comparte el informe de evaluación versionado, la insignia neutral, la tarjeta insertable y las citas. Skillstore presenta evidencias sin decidir si este Skill es seguro.
https://skillstore.io/skills/nexaiguy-x402-api-paywall/audits/1?utm_source=security_passport&utm_medium=share&utm_campaign=versioned_report[](https://skillstore.io/skills/nexaiguy-x402-api-paywall?utm_source=security_passport_badge)<a href="https://skillstore.io/skills/nexaiguy-x402-api-paywall?utm_source=security_passport_badge"><img src="https://skillstore.io/badges/skills/nexaiguy-x402-api-paywall/security.svg" alt="Skillstore security assessment" loading="lazy"></a><iframe src="https://skillstore.io/embed/skills/nexaiguy-x402-api-paywall.html" title="Skillstore Security Assessment" sandbox="allow-popups allow-popups-to-escape-sandbox" loading="lazy" referrerpolicy="no-referrer" width="420" height="180"></iframe>nexaiguy. (2026). x402-api-paywall security audit report (audit version 1) [Author version 1.2]. Skillstore. https://skillstore.io/skills/nexaiguy-x402-api-paywall/audits/1@techreport{nexaiguy-nexaiguy-x402-api-paywall-2026,
author = {nexaiguy},
title = {x402-api-paywall security audit report (audit version 1)},
institution = {Skillstore},
year = {2026},
number = {1},
url = {https://skillstore.io/skills/nexaiguy-x402-api-paywall/audits/1},
note = {Author version 1.2}
}cff-version: 1.2.0
message: "If you use this Skill, cite its author and this versioned security audit report."
title: "x402-api-paywall security audit report (audit version 1)"
version: "1.2"
type: report
authors:
- name: "nexaiguy"
date-released: "2026-11-02"
url: "https://skillstore.io/skills/nexaiguy-x402-api-paywall/audits/1"
identifiers:
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value: "skillstore:nexaiguy-x402-api-paywall:audit:1"
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Use the guide to plan a FastAPI dependency that checks payment before an image-generation endpoint performs expensive work.
Plan Express middleware for paid endpoints while keeping public routes unchanged.
Explore a test-network USDC payment flow for agents consuming metered services.
Explain the x402 request flow for a FastAPI route, including missing proof, HTTP 402 requirements, and facilitator verification.
Plan an x402 paywall for my FastAPI image-generation route at 0.10 USDC on Base Sepolia. Identify required configuration and keep public routes unchanged.
Review my Express routes and propose x402 middleware for selected paid endpoints. Identify a compatible facilitator and verify payment before protected work starts.
Review my x402 integration for proof replay, incorrect payment amounts, network mismatches, and facilitator outages. Propose failure tests and identify unverified settlement assumptions.
Autor
nexaiguyLicencia
MIT
Versión del autor
v1.2
Revisión de Skillstore
r1
Aviso de versión
La versión declarada por el autor no es un SemVer válido.
Ref.
3ddfdca559084abffbfdd188f2ba14b597dcfd9c
Actualidad del mantenimiento
2/11/2026
Uso
0 descargas · 0 vistas
Estructura de archivos
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