@valeo/amp-core

Shared types, PDA derivation, and utilities for the AMP protocol.

What's Inside

• Types -- ChannelState, PricingConfig, AmpPricingManifest, MeteringProof, error codes
• PDA Helpers -- deriveChannelPDA(), deriveVaultPDA()
• Channel Queries -- fetchChannel(), findChannelsByFunder(), findChannelsByRecipient()
• Metering -- signMeteringProof(), verifyMeteringProof()
• Constants -- program ID, USDC mint, seed buffers, protocol limits

Installation

npm install @valeo/amp-core

Usage

import {
  deriveChannelPDA,
  deriveVaultPDA,
  fetchChannel,
  USDC_MINT,
  AMP_PROGRAM_ID,
} from "@valeo/amp-core";

const [channelPDA] = deriveChannelPDA(funderPubkey, recipientPubkey, 0);
const [vaultPDA] = deriveVaultPDA(channelPDA);

const channel = await fetchChannel(channelPDA, program);
console.log(channel?.balance);

License

MIT