How do I install the Zksync Era skill?

Run npx skillmds@latest add hairyf/zksync-era in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Zksync Era safe to use?

This skill has not completed SkillMD's automated safety review yet. Capability flags: docs only. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Zksync Era?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Zksync Era free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Zksync Era?

hairyf (@hairyf) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Zksync Era by hairyf — Agent Skill

Name: Zksync Era
Rating: 4.5 (4 reviews)
Author: hairyf

File contents

Skill based on zkSync Era (ZK Stack), generated from sources/zksync-era. Doc path: sources/zksync-era/docs/src/ (specs, guides).

zkSync Era is an EVM-compatible ZK rollup that settles on Ethereum. It uses a register-based zkEVM (Era VM), state-diff data availability, and the Boojum proof system. This skill focuses on protocol mechanics, L1 contracts, VM/compiler behavior, L1–L2 messaging, and pubdata for agents that implement tooling, integrate with L1/L2, or reason about execution and finality.

Core References

Topic	Description	Reference
Protocol overview	Sequencer, prover, L1 contract, blocks/batches, state diff, Boojum	core-overview
Blocks and batches	L2 blocks vs L1 batches, sealing criteria, try-and-rollback, virtual blocks	core-blocks-batches
L1 smart contracts	Diamond proxy, facets (Getters, Admin, Mailbox, Executor), bridges, governance	core-l1-contracts
Era VM	Register machine, instructions, near/far calls, fat pointers, bootloader	core-era-vm

Features

L1–L2 and communication

Topic	Description	Reference
L1–L2 communication	Priority ops, requestL2Transaction, address aliasing, L2→L1 logs/messages	features-l1-l2-communication

Prover and compiler

Topic	Description	Reference
Prover	ZK terminology, Boojum, circuits, test harness	features-prover
Compiler and system contracts	zksolc, Yul/EVMLA→EraVM, system contracts, auxiliary heap	features-compiler-system-contracts

Transactions and data

Topic	Description	Reference
Transactions	Types (Legacy, EIP-1559, 0x71, L1Tx), lifecycle, mempool, state keeper	features-transactions
Data availability	Pubdata categories, state diff, Boojum packing, L2 state reconstruction	features-data-availability

---name: zksync-eradescription: ZK Stack / zkSync Era—protocol specs, L1 contracts, Era VM, prover, compiler, L1–L2 communication, and data availability.---> Skill based on zkSync Era (ZK Stack), generated from `sources/zksync-era`. Doc path: `sources/zksync-era/docs/src/` (specs, guides).zkSync Era is an EVM-compatible ZK rollup that settles on Ethereum. It uses a register-based zkEVM (Era VM), state-diff data availability, and the Boojum proof system. This skill focuses on protocol mechanics, L1 contracts, VM/compiler behavior, L1–L2 messaging, and pubdata for agents that implement tooling, integrate with L1/L2, or reason about execution and finality.## Core References| Topic | Description | Reference ||-------|-------------|-----------|| Protocol overview | Sequencer, prover, L1 contract, blocks/batches, state diff, Boojum | [core-overview](references/core-overview.md) || Blocks and batches | L2 blocks vs L1 batches, sealing criteria, try-and-rollback, virtual blocks | [core-blocks-batches](references/core-blocks-batches.md) || L1 smart contracts | Diamond proxy, facets (Getters, Admin, Mailbox, Executor), bridges, governance | [core-l1-contracts](references/core-l1-contracts.md) || Era VM | Register machine, instructions, near/far calls, fat pointers, bootloader | [core-era-vm](references/core-era-vm.md) |## Features### L1–L2 and communication| Topic | Description | Reference ||-------|-------------|-----------|| L1–L2 communication | Priority ops, requestL2Transaction, address aliasing, L2→L1 logs/messages | [features-l1-l2-communication](references/features-l1-l2-communication.md) |### Prover and compiler| Topic | Description | Reference ||-------|-------------|-----------|| Prover | ZK terminology, Boojum, circuits, test harness | [features-prover](references/features-prover.md) || Compiler and system contracts | zksolc, Yul/EVMLA→EraVM, system contracts, auxiliary heap | [features-compiler-system-contracts](references/features-compiler-system-contracts.md) |### Transactions and data| Topic | Description | Reference ||-------|-------------|-----------|| Transactions | Types (Legacy, EIP-1559, 0x71, L1Tx), lifecycle, mempool, state keeper | [features-transactions](references/features-transactions.md) || Data availability | Pubdata categories, state diff, Boojum packing, L2 state reconstruction | [features-data-availability](references/features-data-availability.md) |

Frequently asked questions

Zksync Era