crp_sdk 1.0.0

Non-custodial transaction lifecycle management SDK for BSC, Solana, and Sui. Grant-safe with foreground-only polling, explicit retries, and idempotency.

CRP SDK — Chain Relay Protocol (crp_sdk)

CRP SDK is a Dart/Flutter SDK for secure local signing and transaction lifecycle handling. It is designed to work with the CRP API (relay) for transaction preparation, broadcasting, and finality tracking.

Mainnet Proof (Sui)

• Tx Hash: Atr8ZtnVLK3AoEoASvcLB8TmYpZu5t7gzBmFdy8ckrHS
• Explorer: https://suiscan.xyz/mainnet/tx/Atr8ZtnVLK3AoEoASvcLB8TmYpZu5t7gzBmFdy8ckrHS
• Status: Success (mainnet)

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Install

dart pub add crp_sdk

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10-Minute Quickstart (Sui)

Goal: Prepare via CRP API → sign locally → broadcast → track finality.

final result = await sdk.sendTransfer(
  chain: Chain.sui,
  token: Token.usdt,
  fromPrivateKey: "<SUI_PRIVATE_KEY>",
  to: "<RECIPIENT_SUI_ADDRESS>",
  amount: "1",
  clientIdempotencyKey: DateTime.now().millisecondsSinceEpoch.toString(),
);

print("Tx Hash: ${result.txHash}");

Notes

• Use a unique clientIdempotencyKey per request
• Never hardcode private keys in production (use secure storage / wallet)
• Use HTTPS + API keys in production for CRP API

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Examples

Run the integration test:

dart run example/all_chains_usdt_test.dart

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License

MIT