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Machine payments enable AI agents and developers to pay for blockchain data per request using USDC — no API key, no subscription, no human in the loop. Allium supports two machine payment protocols:

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Protocols

Tempo MPP

The simplest path — one function call handles the entire payment flow

x402

Full manual control over 402 negotiation, EIP-712 signing, and payment

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Agent Skills

Don’t want to manage payment code? Install pre-built agent skills and let your AI agent query blockchain data with automatic payment.

Agent Skills

Set up machine payments with AI agents in one command

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Endpoints & Pricing

Endpoints & Pricing

All payment-enabled endpoints, pricing, rate limits, and error codes