### 🔐 Sanitize user-provided transaction inputs

[El-swaggerito]

Overview
All transaction inputs should be sanitized before building contract calls.

Requirements

• Validate amount values
• Reject negative, zero, NaN, or malformed inputs
• Normalize valid inputs before transaction building

Acceptance Criteria

• Unsafe inputs are rejected
• Valid inputs are processed correctly
• Tests cover edge cases

Labels: security, transactions

[Mormentz]

@Mormentz has applied to work on this issue as part of the Stellar Wave Program's 4th wave.

Hi there, I can implement robust input sanitization for all transaction flows in your SDK. I’ll validate and normalize amounts, reject invalid values (negative, zero, NaN, malformed), and ensure only safe inputs are used when building contract calls. I’ll also add comprehensive tests to cover edge cases and guarantee reliability. Secure, predictable, and production-ready. Ready to get started 🚀
Best,
Morment

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