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jhchong0405
jhchong0405COMMUNITY
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x402 Protocol Troubleshooting

Diagnose x402 payment and settlement protocol issues with diagnostic steps.

1|1|Updated Feb 8, 2026
Search Tags:#troubleshooting#smart contracts#settlement#x402#api errors#payment issues
One-click install
npx skills add https://github.com/jhchong0405/x402_marketplace --skill x402-protocol-troubleshooting
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: x402 Protocol Troubleshooting
Source: https://github.com/jhchong0405/x402_marketplace/tree/main/skills/x402_troubleshooting
Command: npx skills add https://github.com/jhchong0405/x402_marketplace --skill x402-protocol-troubleshooting

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill helps diagnose and fix common problems encountered with the x402 payment and settlement protocol, ensuring smooth transactions and data access.

Core Features & Use Cases

  • Payment Issues: Addresses scenarios where payments are confirmed but claimable balances are zero.
  • Signature Verification: Provides solutions for "Signature verification failed" errors.
  • Provider Access: Helps resolve "402 Payment Required" errors when accessing provider services.
  • Use Case: If a user reports that their payment for a premium report was successful, but they still cannot access the data, this Skill guides them through checking relayer logs and service registration to identify and fix the root cause.

Quick Start

Use the x402 Protocol Troubleshooting skill to resolve an issue where a payment was successful but the claimable balance is zero.

Frequently Asked Questions about x402 Protocol Troubleshooting

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
Why does my x402 payment show zero claimable balance after a successful transaction?▼

A zero claimable balance after an x402 payment typically indicates a failure in the on-chain settlement process, requiring you to check relayer logs and verify Escrow contract interactions to find the root cause.

How do I fix signature verification failures in x402 protocol smart contracts?▼

Fixing x402 signature verification failures requires validating the API communication between the gateway and provider services to ensure signature payloads correctly match the smart contract parameters.

What causes a 402 Payment Required error when accessing x402 provider services?▼

A 402 Payment Required error during x402 provider access means the gateway cannot confirm the payment, requiring you to diagnose API communication and verify the on-chain transaction status with the provider.

How do I troubleshoot x402 settlement issues with smart contracts?▼

Troubleshooting x402 settlement requires analyzing on-chain transactions and smart contract interactions within the Escrow and ServiceRegistry to ensure correct communication between gateway and provider services.

Do I need to understand on-chain transactions to resolve x402 payment issues?▼

Yes, resolving x402 payment and settlement issues requires an understanding of on-chain transactions, smart contract interactions, and API communication to effectively diagnose gateway and provider errors.

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