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DevX Agent Tools – Payment Request Generator (EIP-681/BIP21/Solana Pay)
x402
DevX Agent Tools – Payment Request Generator (EIP-681/BIP21/Solana Pay) is a paid API for AI agents from devx-x402-tools.nextill-pos.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-29).
Generates a standards-compliant crypto payment request URI (EIP-681, BIP21, or Solana Pay) with an accompanying QR code SVG for a given recipient address, token, amount, and chain.
Price / call$0.01
Success—
StatusUnknown
How this service works
Pay-per-call utilities for AI agents, no API key or signup: read any web page as clean Markdown ($0.002), link/SEO metadata ($0.001), domain DNS + SPF/DMARC email-security audit ($0.003), ERC-20 token safety pre-check ($0.005), crypto address validation, on-chain payment verification, EIP-681/BIP21/Solana Pay payment requests with QR, multichain USDC balances ($0.01). x402 v2, USDC on Base. Invalid input / upstream failure is never charged.
Output
Returns a JSON object containing: a standards-compliant payment request URI (e.g. EIP-681 ethereum: URI, BIP21 bitcoin: URI, or Solana Pay URI), an SVG QR code encoding that URI for display or printing, and a string identifying which payment standard was used.
Example use cases
Crypto invoice QR for customers
“Generate a payment request QR code for 50 USDC on Base to address 0xe30cABCD1234..., labeled 'Order #1001' so I can display it at checkout.”
Solana Pay request for a tip jar
“Create a Solana Pay payment request URI and QR code asking for 5 USDC, sending it to my Solana address ABC123..., with the message 'Thanks for your support!'”
EIP-681 deeplink for a dApp
“I need an EIP-681 payment URI for 10 USDC on Base to wallet 0xDEAD...BEEF so I can embed it as a deeplink button in my web app — can you generate that with a QR code too?”
Technical details
Endpoint
GEThttps://devx-x402-tools.nextill-pos.workers.dev/v1/payment/request?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to generate a human-scannable or machine-readable crypto payment request in a standard URI format (EIP-681, BIP21, or Solana Pay) complete with a ready-to-render SVG QR code — especially in agent workflows, invoicing, or checkout flows where no API key or pre-registration is possible and pay-per-call via x402/USDC is acceptable.
Side effects
- Invalid or malformed recipient address returns an error and is not charged
- Unsupported chain or token combination returns an error
- Missing required query parameters (to, amount) results in a 4xx error
- Upstream generation failure returns an error without charging
- Amount not parseable as a valid numeric value triggers validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"uri": "ethereum:0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913@8453/transfer?address=0xe30c...&uint256=25000000",
"qr_svg": "<svg ...>",
"standard": "EIP-681"
}
}Tags
x402
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