AgentSkillsCN

cairo-library-calls

当请求涉及 Starknet L1 与 L2 消息传递、l1_handler 函数，以及消息系统调用时，讲解如何在 Cairo 中实现跨层消息传递。

SKILL.md
--- frontmatter
name: cairo-library-calls
description: Explain Starknet library calls that execute code from another class using class hash; use when a request involves library dispatchers, class hashes, or library_call_syscall.

Cairo Library Calls

Overview

Explain how to execute code from another class in the caller context using library calls.

Quick Use

  • •Read references/library-calls.md before answering.
  • •Distinguish contract calls from library calls (context and storage).
  • •Use a LibraryDispatcher with a class hash when possible.

Response Checklist

  • •Use library calls when you need to reuse logic without deploying another instance.
  • •Mention that library calls run in the caller's storage context.
  • •Use Serde for calldata and return data when using low-level syscalls.

Example Requests

  • •"How do I call a class by hash from a contract?"
  • •"What is the difference between library_call and contract_call?"
  • •"How do I use library_call_syscall directly?"