Close Out Report

Project Catalyst Close Out Report - Fund 12

Project Information

Name of Project: CardanoKit - Swift Cardano Library Upgrade and Enhancement Project URL on Catalyst: Proposal Project Number: Fund 12 Project Manager: Tokeo Development Team Date Project Started: January 2025 Date Project Completed: August 2025

Challenge KPIs and How the Project Addressed Them

Fund 12 Developer Tools Challenge KPIs:

1. Increase Developer Adoption: CardanoKit provides a modern, Swift-native SDK that significantly lowers the barrier to entry for iOS developers wanting to build on Cardano

2. Improve Developer Experience: The library offers a clean, abstracted interface that handles complex Cardano operations while maintaining full functionality

3. Ecosystem Growth: By providing production-ready tools for iOS development, the project enables mobile wallet applications and dApps on the Cardano ecosystem

How We Addressed These KPIs:

• Created a complete rebuild of the legacy SwiftCardano library with modern Swift 6.0 support

• Integrated the latest Cardano Serialization Library (v14.1.2) supporting all recent hard forks

• Delivered comprehensive documentation, example applications, and unit tests (15 tests with 100% pass rate)

• Published the library via Swift Package Manager for easy integration

Project KPIs and How the Project Addressed Them

Original Project Goals:

1. Upgrade CSL Integration: ✅ ACHIEVED - Successfully integrated CSL v14.1.2 (from v10.x)

2. Fix Compatibility Issues: ✅ ACHIEVED - Complete rebuild addressed all hard fork incompatibilities

3. Enhance Library Functionality: ✅ EXCEEDED - Added comprehensive wallet management, transaction processing, and dApp integration capabilities

4. Production Integration: ✅ ACHIEVED - Successfully integrated into Tokeo app (v2.60)

Additional KPIs Achieved:

• Unit Test Coverage: 15 comprehensive tests covering all core functionality

• Memory Efficiency: Stress tested with 500,000 iterations showing minimal memory impact (864KB increase)

• Platform Support: Updated to iOS 17.0+, macOS 15.0+ with Swift 6.0 compatibility

• Documentation Quality: Complete technical design documentation and user guides

Key Achievements

Technical Achievements

• Complete Library Rebuild: Transitioned from upgrade to full reconstruction due to fundamental Cardano changes

• CSL Mobile Bridge Integration: Successfully exposed >90% of CSL primitives via automated workflow

• Production-Ready SDK: Delivered a comprehensive toolkit including:

  • HD Wallet Support (BIP32/BIP39 compliant)

  • Transaction Processing (CBOR parsing, fee calculation, signing)

  • Advanced Address Management

  • Multi-asset Transaction Building

  • dApp Integration (CIP-30 compatibility)

Collaboration and Engagement

• Community Feedback Integration: Published technical design for community review and incorporated feedback

• Open Source Contribution: Made CardanoKit freely available on GitHub for the entire Cardano developer community

• Documentation Excellence: Created comprehensive guides, technical specifications, and example applications

• Marketing and Promotion: Active promotion via X (Twitter), blog posts, and community engagement

Milestone Completion

All 5 planned milestones were completed successfully:

• Milestone 1: Architecture and CSL integration with example app

• Milestone 2: Technical design specification and community feedback

• Milestone 3: Core functionality implementation with comprehensive testing

• Milestone 4: Beta release with application-ready features

• Milestone 5: Production integration and final testing

Key Learnings

Technical Learnings

1. Scope Evolution: The extent of Cardano's evolution since the original library required a complete rebuild rather than incremental updates

2. CSL Integration Complexity: Bridging Rust-based CSL to Swift required sophisticated FFI (Foreign Function Interface) implementation

3. Memory Management: Careful attention to Rust pointer deallocation in Swift environment was crucial for performance

Project Management Learnings

1. Flexible Planning: Being adaptable when technical requirements exceeded original scope estimates

2. Testing Importance: Comprehensive unit testing proved essential for ensuring reliability across all supported operations

3. Community Engagement: Early publication of technical designs enabled valuable community input and validation

Ecosystem Insights

1. Mobile Development Gap: Significant unmet demand for high-quality iOS development tools in the Cardano ecosystem

2. Developer Experience Priority: Clean, well-documented APIs dramatically improve developer adoption

3. Integration Challenges: Production applications require robust error handling and memory management

Next Steps for CardanoKit

Short-term (3-6 months)

1. Community Adoption: Continue supporting developers integrating CardanoKit into their applications

2. Feature Enhancements: Add additional CIP (Cardano Improvement Proposal) support based on community need

3. Blockfrost Data Provider: Add a blockfrost provider for simple initialization with Blockfrost.

Final Thoughts/Comments

The CardanoKit project successfully transformed from a library upgrade into a comprehensive, production-ready SDK that addresses a critical gap in the Cardano developer ecosystem. The project exceeded its original scope by delivering not just compatibility fixes, but a complete, modern development toolkit.

The successful integration into Tokeo's production application (v2.60) demonstrates real-world viability, while the comprehensive test suite (15 tests, 100% pass rate) ensures reliability for other developers. The project's impact extends beyond Tokeo, providing the entire Cardano community with professional-grade iOS development tools.

The experience reinforced the importance of adaptability in blockchain development, where rapid protocol evolution requires flexible, forward-thinking solutions. CardanoKit now serves as a foundation for iOS development on Cardano, enabling the next generation of mobile applications and wallets.

Links to Other Relevant Project Sources

Code Repositories

• Main Repository: https://github.com/TokeoPay/CardanoKit

• Example Application: https://github.com/TokeoPay/CardanoKit-Example

• CSL Kit Dependency: https://github.com/TokeoPay/CSLKit

Documentation

• Technical Design: https://github.com/TokeoPay/CardanoKit/blob/main/TechnicalDesign.md

• Project Documentation: https://gitbook.tokeo.io/tokeo/technical-information/cardanokit/catalyst-fund-12

Marketing and Community

• Tokeo Blog: https://tokeo.io/blog/cardanokit-by-tokeo-technical-design-and-feedback/

• X (Twitter) Updates:

  • Milestone 1: https://x.com/Tokeo_io/status/1936082787481567343

  • Milestone 2: https://x.com/Tokeo_io/status/1940827261088993577

  • Milestone 4: https://x.com/Tokeo_io/status/1950600837891498079

  • Milestone 5: https://x.com/Tokeo_io/status/1973786606260957575

Catalyst Links

• Catalyst Proposal

• Statement of Milestones

Link to Close-out Video

Close-out Video: https://x.com/Tokeo_io/status/1950600837891498079

Video will demonstrate CardanoKit functionality, including wallet creation, transaction signing, and dApp integration features, along with project achievements and future roadmap.