Cross-Contract Communication Contract

[Mkalbani]

Location: contracts/cross_contract
Language: Rust (Soroban)
Estimated Time: 6 hours
Difficulty: Medium

Description

Implement secure cross-contract communication with callback support and message routing.

Tasks

• Design message structure
• Implement contract invocation
• Add callback handling
• Create message routing
• Implement error propagation
• Add transaction atomicity
• Create message queue
• Write comprehensive tests
• Implement rate limiting
• Add audit trail

Acceptance Criteria

• Contracts communicate safely
• Callbacks execute correctly
• Messages route properly
• Errors propagate
• Atomicity maintained
• All tests pass

[Ebenezer199914]

can i work on this issue

[Henrichy]

@Henrichy has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

My name is Henry Nzekwe, a fullstack software developer. I will implement the Cross-Contract Communication Contract in contracts/cross_contract using Rust and Soroban to enable secure communication between contracts. I will design a structured message format for contract-to-contract requests, implement safe invocation handling, and add callback support for asynchronous response flows. I will create message routing logic, queue management, and ensure errors are properly propagated between contracts without losing execution context. Transaction atomicity will be maintained by ensuring failed operations roll back safely. I will also implement rate limiting controls and an audit trail for tracking contract messages and callbacks. Comprehensive tests will be added to validate message delivery, callback execution, routing correctness, failure handling, atomic operations, and security constraints. The final implementation will ensure reliable cross-contract interactions while keeping all existing contract tests passing

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Henrichy to this issue.

[Trovic1]

@Trovic1 has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

Hello can i work on this issue?

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Trovic1 to this issue.

[drips-wave]

Congratulations, @Trovic1! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on June 30, 2026.

🧑‍💻 @Trovic1: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

Warning

When opening a PR, please link it to this issue to ensure it gets tracked accurately. Points are awarded when this issue is marked as completed by the maintainer.

🤠 Repo maintainers: Please keep an eye on the contributor's progress and review their work before the due date. You can manage this issue, including adjusting its complexity and points, here.

🌊 Happy Wave 🌊

[grantfox-oss]

🦊 GrantFox — @Trovic1 has been assigned to this issue!

Next steps:

1. Open a Pull Request referencing this issue (e.g., Closes #260)
2. Your PR will be reviewed by the MindFlowInteractive maintainers

Good luck! Track your progress on GrantFox.