Connect your app to Alchemy, paying per call.
Guides application integrations with Alchemy using wallet authentication and per-request payments instead of an API key.
When to use it
Use when building application code outside the agent session and no API key is available, an autonomous agent must pay for itself, the user explicitly wants x402 or MPP, or they intentionally choose the gateway because no other runtime path exists.
Give it an application integration request; it asks you to choose a payment protocol before guiding the implementation in your project.
What you provide
Requires Node.js with npx available.
Uses a SIWE or SIWS authentication token in the gateway's Authorization header, according to the chosen protocol.
This skill
Alchemy
Pays for Alchemy requests (irreversible)
npx @alchemy/x402 pay
The x402 payment helper