NethermindEth

Use this skill when working with Aztec account implementations and lifecycle flows, including Schnorr/ECDSA account flavors, account abstraction entrypoints, transaction routing, key-store integration, deployment, and wallet reconstruction.

Use this skill when creating, editing, testing, debugging, or upgrading Aztec smart contracts in Noir/Aztec.nr, including storage modeling, private/public/utility functions, note delivery, authwit authorization, TestEnvironment tests, and artifact/codegen workflows.

Use this skill when deploying Aztec smart contracts (not authoring them), including local-network and devnet deployment via aztec-wallet/Aztec.js, fee-payment setup, deterministic addresses, deployment verification, and contract registration workflows.

Use this skill when building TypeScript applications with Aztec.js, including node/PXE connectivity, account lifecycle, contract deployment and interaction, transaction/fee handling, authwit authorization, event reads, and test automation.

Use this skill when implementing or debugging direct PXE workflows in TypeScript, including private execution lifecycle, note discovery/synchronization, sender/recipient tagging, private events, scopes, and oracle/debug checks.

Use this skill when testing Aztec smart contracts, including Noir tests with TestEnvironment and TypeScript integration tests with Aztec.js on local-network/devnet-like setups.

Use this skill when integrating Aztec wallet connectivity with @aztec/wallet-sdk, including discovery/session flows, secure-channel key exchange, extension handlers, encrypted messaging, and BaseWallet implementations.

General Rust conventions for Pluto. Use it once for understanding the codebase better.

Use when porting Charon components to understand Go codebase architecture, workflow, design patterns, or component responsibilities

Pluto-specific code review guidelines. Use as a general guideline when asked to conduct a code review.

Guides Go→Rust porting for Pluto. Invoke when asked to port, implement parity for, or translate a Go component.

Full multi-agent code review for a Pluto PR. Spawns parallel agents covering functional correctness, security, Rust style, and code quality, then posts all findings as isolated GitHub review comments and submits a final approve/request-changes verdict. Invoke as `/review-pr <PR-number>` or `/review-pr <GitHub-PR-URL>`.

Iteratively review and fix a Pluto PR until it is "ideal" — drives the /review-pr multi-agent pipeline inside /ralph-loop, applying fixes between iterations and never posting inline comments. After the loop terminates, posts a single summary comment to the GitHub PR with everything that was resolved. Invoke as `/loop-review-pr <PR-number|PR-URL> [--max-iterations N]`.

Use when implementing, reviewing, debugging, or explaining Pluto Rust libp2p code: Node/P2PContext ownership, PlutoBehaviour composition, NetworkBehaviour and ConnectionHandler protocols, relay/force-direct/quic-upgrade behaviours, peerinfo/parsigex protocol handlers, DKG protocol handlers, and P2P tests.

Debug and fix failing Ethereum Foundation tests run with Nethermind.Test.Runner. Accepts test file paths as arguments. Runs the test, analyzes traces, identifies root causes in the EVM/spec/test harness, and proposes fixes.

Build a diag Docker image, run gas-benchmarks repricing workflow, and analyze results including dotTrace XML reports. Use when asked to "run benchmarks", "trigger gas benchmarks", "benchmark this branch", "profile block processing", or "analyze benchmark run". Supports analyze-only mode for CI integration.

Audit C#/.NET code for resource leaks, IDisposable misuse, CTS lifecycle bugs, unbounded growth, handle exhaustion, and dispose race conditions. Use when asked to "audit for leaks", "check for resource leaks", "find dispose issues", "review for memory leaks", or when reviewing a PR that touches resource management, disposal, CancellationTokenSource, ArrayPool, event subscriptions, or async coordination patterns.

Deep code review for an Ethereum execution client. Checks consensus correctness, security, robustness, performance, DI patterns, breaking changes, and observability. Use when asked to "review", "check this PR", "look for bugs", "audit", or "review my changes".

Build unsigned DeFi transactions from natural language across multiple chains. Use when the user wants to send, transfer, swap, stake, unstake, wrap, unwrap, supply, withdraw, borrow, repay, deposit, delegate, add liquidity, remove liquidity, or trade yield tokens on-chain. Supports Ethereum, Arbitrum, Base, Optimism, Polygon, and Sepolia. Covers ETH, ERC-20, ERC-721, Aave, Lido, Uniswap, Curve, Compound, MakerDAO, Rocket Pool, EigenLayer, Balancer, Pendle, Fibrous, and WETH.

Build unsigned DeFi transactions from natural language across multiple chains. Use when the user wants to send, transfer, swap, stake, unstake, wrap, unwrap, supply, withdraw, borrow, repay, deposit, delegate, add liquidity, remove liquidity, or trade yield tokens on-chain. Supports Ethereum, Arbitrum, Base, Optimism, Polygon, and Sepolia. Covers ETH, ERC-20, ERC-721, Aave, Lido, Uniswap, Curve, Compound, MakerDAO, Rocket Pool, EigenLayer, Balancer, Pendle, Fibrous, and WETH.

Use this skill when the user wants to measure the runtime cost of constrained vs unconstrained note delivery in the MarketplaceC2D contract, when comparing C2D marketplace performance across Aztec versions, or when reproducing the C2D POC's end-to-end benchmark numbers. Covers the full build pipeline (Noir compile, prefix strip, Docker AVM postprocess, codegen), how to run the e2e Jest test, how to switch between constrained and unconstrained delivery, and includes the May 2026 baseline measurements on a Surface ARM with Aztec v4.1.0-rc.2.

Guides using helm-unittest for Helm charts. Use when writing unit tests for Helm templates or implementing new complex features in a chart.