Buy KALE tokens with a custom USDC amount via x402 payment on Base
What it does
This x402-enabled endpoint at kale.x420.dev allows callers to purchase KALE tokens (contract 0x933C483A5d0Ac4234F4FA26b9950864Ca57afb07) by specifying a custom USDC amount. KALE is a token created via Clanker on the Base network. The action is referred to as a "Puff" — you enter a USDC amount and the endpoint handles the token swap.
The endpoint is part of the x420.dev platform, which hosts x402-compatible token purchase endpoints. According to the landing page, the service has processed 11 total transactions across 3 unique users with a 100% success rate and an average latency of 2.69 seconds. The trust score is listed at 85%. No formal API documentation, OpenAPI schema, or pricing page exists; the /docs, /api, /pricing, and /README paths all return placeholder pages. The x402 probe returned a 405 status rather than the expected 402 challenge, so the payment negotiation flow could not be verified at probe time.
Because there is no published schema or documentation beyond the landing page UI, the exact request format, accepted parameters, and response structure are unknown. Agents intending to use this endpoint will need to rely on x402 protocol conventions and may need to discover parameters experimentally.
Capabilities
Use cases
- —Programmatically purchasing KALE tokens with USDC via an x402 payment flow
- —Agents acquiring meme/community tokens on Base without manual wallet interaction
- —Automated portfolio diversification into Clanker-launched tokens
Fit
Best for
- —AI agents that need to swap USDC for KALE tokens on Base
- —Developers experimenting with x402 payment-gated token purchases
- —Users who want a simple HTTP-based token buy without direct DEX interaction
Not for
- —High-volume or institutional trading requiring deep liquidity and order books
- —Users needing detailed API documentation or SLA guarantees
- —Non-crypto use cases or fiat-only workflows
Quick start
# x402 endpoints require payment headers; exact schema is undocumented.
# Conceptual call:
curl -X POST https://kale.x420.dev/api/puff-custom \
-H "Content-Type: application/json" \
-d '{"amount": "1.00"}'Example
Request
{
"amount": "1.00"
}Endpoint
Quality
No API documentation, no OpenAPI schema, no x402 challenge returned during probing (405 instead of 402), and /docs returns a placeholder. The only information comes from the landing page UI. Request/response formats are entirely inferred.
Warnings
- —x402 probe returned 405 instead of expected 402 — payment flow could not be verified
- —No API documentation exists; /docs, /api, /pricing, /README all return placeholder pages
- —Request and response schemas are completely unknown and inferred
- —Very low transaction volume (11 total, 3 unique users) — liquidity and reliability unverified
- —Token is a Clanker-launched meme token — high financial risk
Citations
- —KALE token contract is 0x933C483A5d0Ac4234F4FA26b9950864Ca57afb07, created via Clankerhttps://kale.x420.dev
- —11 total transactions, 3 unique users, 100% success rate, 2.69s avg latency, 85% trust scorehttps://kale.x420.dev
- —x402 probe returned 405 status instead of 402https://kale.x420.dev/api/puff-custom
- —/docs, /api, /pricing, /README all return placeholder 'doesn't exist' pageshttps://kale.x420.dev/docs