AgentSkillsCN

cairo-type-serialization

当请求涉及通过替换类哈希与代理模式实现 Starknet 合约的可升级性时，讲解如何升级合约逻辑，或使用 replace_class_syscall 进行类哈希替换。

SKILL.md
--- frontmatter
name: cairo-type-serialization
description: Explain Starknet ABI serialization of Cairo types, including arrays, structs, enums, and integers; use when a request involves calldata encoding or Serde behavior.

Cairo Type Serialization

Overview

Explain how Cairo types are serialized to felt252 values for calldata, events, and storage interaction.

Quick Use

  • •Read references/type-serialization.md before answering.
  • •Identify whether a type fits in one felt or requires multi-felt encoding.
  • •Use Serde-derived behavior as the default.

Response Checklist

  • •Mention length prefix for arrays and spans.
  • •Explain enum encoding as variant index plus payload.
  • •For multi-limb integers, state the limb ordering.

Example Requests

  • •"How is a u256 serialized in calldata?"
  • •"How does enum serialization work?"
  • •"What does ByteArray serialize to?"