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FREE Token Purchase - 1 USDC (x420.dev)
x402
FREE Token Purchase - 1 USDC (x420.dev) is a paid API for AI agents from free.x420.dev, paid per call via x402, $1/call, status unknown (last checked 2026-10-18).
Spends 1 USDC to buy FREE tokens (0x4A9bbC9FCB7a82b212214A2FaCc219a651B0fb07) on x420.dev via x402 payment protocol
Price / call$1
Success—
StatusUnknown
How this service works
Buy 1 USDC worth of FREE tokens 0x4A9bbC9FCB7a82b212214A2FaCc219a651B0fb07
Output
Returns a confirmation message, the amount of FREE tokens received, the USDC amount paid (1 USDC), a send transaction hash (may be null), and a swap transaction hash (may be null) confirming the on-chain token purchase.
Example use cases
Example prompt
“Buy me 1 USDC worth of FREE tokens on x420.dev — use the x402 payment protocol and let me know how many FREE tokens I received and the transaction hashes.”
Technical details
Endpoint
GEThttps://free.x420.dev/api/puff?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you want to spend exactly 1 USDC to acquire FREE tokens via the x402 micropayment protocol. Prefer this over the 5 USDC sibling endpoint when making a smaller trial purchase or when budget is constrained to 1 USDC. This is purpose-built for programmatic token acquisition on x420.dev using x402.
Side effects
- Insufficient USDC balance — payment of 1 USDC cannot be fulfilled
- x402 payment header missing or malformed — request rejected before swap executes
- On-chain swap failure — swap transaction hash is null and tokens not received
- Token contract unavailable or liquidity insufficient — swap cannot complete
- Network congestion causing transaction timeout
Output
Schema · Response
{
"message": "string",
"tokensReceived": "string",
"usdcAmountPaid": "string",
"sendTransactionHash": "string | null",
"swapTransactionHash": "string | null"
}Tags
x402
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Zero review prompt (fires after every successful call)
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