snarkjs

Generate and verify zkSNARK proofs with snarkjs for circom circuits.

Updated Sep 29, 2025

Search Tags:#zk #zero-knowledge #plonk #groth16 #circom #snarkjs #zksnark

Ready to run

npx skills add https://github.com/cyotee/manamesh --skill snarkjs

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Please help me install this Agent Skill.
Skill: snarkjs
Source: https://github.com/cyotee/manamesh/tree/main/.opencode/skills/snarkjs
Command: npx skills add https://github.com/cyotee/manamesh --skill snarkjs

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

snarkjs provides a complete, JavaScript-based workflow for creating, proving, and verifying zkSNARKs, bridging circuit compilers like circom with runtime proof logic.

Core Features & Use Cases

End-to-end zkSNARK support including Groth16, PLONK, and FFLONK proving systems.
CLI and JavaScript API for generating proofs, verifying proofs, and exporting verification keys for Solidity contracts.
Works across Node.js and browser environments, enabling decentralized zk workflows and browser-based demos.

Quick Start

Run the CLI to generate and verify proofs using your circuit files.

Frequently Asked Questions about snarkjs

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I generate and verify zkSNARK proofs in JavaScript?▼

You can generate and verify zkSNARK proofs in JavaScript using the snarkjs workflow, which bridges circom-based circuits with runtime logic for end-to-end proof generation and verification in Node.js.

What proving systems are supported for zero-knowledge proofs in Node.js and browser environments?▼

The workflow supports Groth16, PLONK, and FFLONK proving systems for zero-knowledge proofs, enabling decentralized zk workflows and browser-based demos across Node.js and browser environments.

Can I export a verification key for Solidity contracts from a circom circuit?▼

Yes, you can export a verification key for Solidity contracts from a circom circuit using the snarkjs JavaScript API, ensuring alignment with standard VK formats and tooling.

Does snarkjs work with circom-based circuits for end-to-end zkSNARK workflows?▼

Yes, snarkjs works directly with circom-based circuits to provide an end-to-end JavaScript-based zkSNARK workflow, handling trusted setup, proof generation, and verification.

What is the best way to verify zero-knowledge proofs in both Node.js and the browser?▼

The best way to verify zero-knowledge proofs across both Node.js and the browser is using a JavaScript-based zkSNARK workflow that provides a compatible CLI and JavaScript API.