xrpl-wasm-stdlib Library

The XRPL Standard Library provides safe, type-safe access to XRPL host functions for WebAssembly smart contract development. This no_std library offers zero-cost abstractions over raw host function calls and handles memory management, error handling, and type conversions.

Quick Start

There is an interface available at https://ripple.github.io/xrpl-wasm-stdlib/ui/ for local or Devnet testing.

Examples Overview

• hello_world - Basic escrow with logging
• oracle - Price-based release using oracle data
• kyc - Credential-based verification
• notary - Multi-signature authorization
• nft_owner - NFT ownership verification
• ledger_sqn - Sequence-based release

Documentation

The complete developer guide includes:

• Getting Started - Installation, first contract, core concepts
• API Reference - Complete API documentation and usage patterns
• Examples - Smart escrow examples and tutorials
• Development Guide - Building, testing, and CI setup

Key Features

• Type-safe access to transaction and ledger data
• Memory-safe operations with no heap allocations
• Deterministic execution across all nodes/validators
• Zero-cost abstractions over host functions
• Comprehensive error handling with custom Result types

Safety and Constraints

Smart escrows run in a constrained WebAssembly environment:

• Read-only ledger access (except escrow data updates)
• Deterministic execution required
• Resource limits enforced
• No network/file system access

Contributing

See CONTRIBUTING.md for detailed guidelines on:

• Development setup and workflow
• Code standards and style guidelines
• Pull request process
• Testing requirements
• Release procedures

We welcome contributions of all kinds!