# Cairo Library Calls

> 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.

- Skill: `teddyjfpender/cairo-library-calls` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add teddyjfpender/cairo-library-calls`
- Raw SKILL.md: https://api.skillmd.com/api/skills/teddyjfpender/cairo-library-calls/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: teddyjfpender (https://skillmd.com/u/teddyjfpender)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/teddyjfpender/cairo-library-calls

---


# 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?"