Automate Payment Authorization with the X402 Workflow
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Streamline your payment authorization process with the X402 n8n workflow. This automated solution leverages webhook triggers and the 1Shot API to securely validate and process payment credentials, ensuring efficient and reliable transactions.
About This Workflow
The X402 n8n workflow is designed to automate the critical step of payment authorization. It begins by listening for incoming webhooks, specifically checking for the presence of an X-PAYMENT header. If detected, the workflow decodes this header, which is expected to be Base64 encoded and contain a JSON payload detailing payment authorization information. It then validates the structure of this payload, ensuring all necessary signature and authorization details are present. Following validation, a simulated payment is performed via the 1Shot API to pre-check the transaction's validity. Upon successful simulation, the workflow proceeds to submit the payment details to the 1Shot API for final processing. Error handling is integrated throughout, providing specific responses for missing or invalid headers and unsuccessful payment verifications, ensuring robust and transparent payment operations.
Key Features
- Automated Webhook Triggering: Initiates workflows based on incoming payment requests.
- Secure Header Validation: Checks for and validates the
X-PAYMENTheader, ensuring data integrity. - Base64 Decoding & JSON Parsing: Safely decodes and parses payment credentials from the header.
- Payment Simulation: Pre-validates transactions using the 1Shot API before final submission.
- Robust Error Handling: Provides clear responses for invalid headers or failed payment verifications.
How To Use
- Configure the Webhook Node: Set up the initial 'Webhook' node to receive incoming payment requests. Note the unique webhook URL generated for this workflow.
- Define the X-PAYMENT Header Check: In the 'Check for presence of X-HEADER' node, configure the condition to specifically look for the
X-PAYMENTheader using the={{ $json.headers['x-payment'] }}expression and the 'exists' operator. - Implement Decoding and Validation: Configure the 'Decode & Validate X-Payment' node with the provided JavaScript code to decode the Base64 header and parse the JSON payload. Ensure error handling is set up to return an
invalid token formaterror. - Set up Payment Simulation: In the 'Simulate Payment' node, connect your 1Shot API credentials and map the
from,to,value,validAfter,validBefore,nonce, andsignaturefields using expressions like={{ $json.decodedXPayment.payload.authorization.from }}. - Branch on Simulation Success: Use the 'On Successful Payment Simulation' node to create a conditional branch. The condition should check if the simulation was successful (e.g.,
={{ $json.success.toString() }}equalstrue). - Submit Final Payment: For successful simulations, configure the '1Shot API Submit & Wait' node to make the final API call to process the payment, ensuring to reference the decoded payment payload correctly.
- Configure Response Nodes: Set up the 'Response: Missing or Invalid Payment Headers', 'Response: Payment Invalid', and 'Response: 200 - Payment Successful' nodes to provide appropriate HTTP responses based on the workflow's execution path and outcomes.
Apps Used
Workflow JSON
{
"id": "ef59db8c-f116-44d1-a375-1ce978e01e5c",
"name": "Automate Payment Authorization with the X402 Workflow",
"nodes": 7,
"category": "Operations",
"status": "active",
"version": "1.0.0"
}Note: This is a sample preview. The full workflow JSON contains node configurations, credentials placeholders, and execution logic.
Get This Workflow
ID: ef59db8c-f116...
About the Author
DevOps_Master_X
Infrastructure Expert
Specializing in CI/CD pipelines, Docker, and Kubernetes automations.
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