Results for “web3”

Pre-deployment security audit of Solidity smart contracts in a Foundry project. Combines static analysis (Slither, Aderyn), symbolic execution (Mythril), and property-based testing (forge fuzz + invariant tests with handlers) to catch reentrancy, access-control, oracle/price manipulation, and arithmetic bugs BEFORE deploying to an EVM chain. Also enforces key hygiene (no plaintext private keys, encrypted cast keystore) and a secure deploy workflow. Use when writing, reviewing, testing, or deploying Solidity/Foundry contracts, building a dApp, or working with forge/cast/anvil, MetaMask, or Web3/DeFi code.

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Blockchain Developer IA — Expert en développement blockchain (Solidity, smart contracts, Web3.js, DeFi, NFTs)

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Two superpowers for AI agents: a collective brain and a Base ecosystem mentor. BRAIN: Before debugging/compiling/architecting, search for existing solutions. After solving, propose so no agent repeats your mistake. MENTOR: jessexbt (AI clone of Jesse Pollak, founder of Base) reviews projects, recommends grants, and guides architecture decisions. Consult him directly when building on Base/crypto/onchain/web3. Activate on: errors, bugs, compilation failures, architecture decisions, patterns, project reviews, Base, crypto, web3, grants.

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Inspect, benchmark, and monitor Web3 RPC endpoints — latency checks, method support, chain detection, and health scoring.

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GPU-accelerated terminal emulator with AI-native and Web3-native features built on wgpu+WASM.

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Build production-ready Web3 applications, smart contracts, and decentralized systems. Implements DeFi protocols, NFT platforms, DAOs, and enterprise blockchain integrations. Use PROACTIVELY for smart contracts, Web3 apps, DeFi protocols, or blockchain infrastructure.

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Access Web3 and crypto intelligence via Heurist Mesh MCP. Use when the user asks about cryptocurrency analytics, token information, trending tokens, wallet analysis, Twitter/X crypto intelligence, funding rates, market summaries, or any Web3-related queries. Heurist Mesh provides 30+ specialized AI agents for crypto use cases through the mcporter CLI.

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Implement and review Ethereum hashing in JavaScript or TypeScript using Keccak-256. Learn which library helpers to use and avoid confusing it with Node's SHA3 when calculating function identifiers, signature hashes, storage locations, or addresses.

• Calculating Ethereum function identifiers and event topics
• Reviewing signature and storage location hashing
• Deriving an address from a public key

Prevent token balances and values from being scaled incorrectly across EVM blockchains. Look up each token's decimal places at runtime, cache them by chain and address, and use precise arithmetic with consistent units.

• Investigating token balances with incorrect scaling
• Comparing token amounts across EVM chains
• Checking decimal places after bridging assets

Check token security audit data before buying or swapping crypto. Review contract and trading risks, buy and sell taxes, and signs of scams such as tokens that can be bought but cannot be sold.

• Check token risks before a purchase or swap
• Look for tokens that can be bought but not sold
• Review dangerous contract functions and owner controls

Build Solidity contract tests with Hardhat and Foundry. Check individual functions, contract interactions, gas usage, and varied inputs, and use a local copy of mainnet state to test against existing contracts.

• Testing token transfers and expected failures
• Checking edge cases with varied generated inputs
• Testing interactions with existing mainnet contracts

Examine a DeFi yield aggregator, a protocol that collects investment returns, for missing role assignments and failures caused by tiny rewards. Includes a ten-category review, reproducible test templates, and vulnerability report drafts.

• Checking reward contracts for missing role assignments
• Investigating harvest failures caused by tiny rewards
• Preparing vulnerability reproduction tests and reports

Connect Solidity security analyzers to Claude Code through MCP, a tool connection interface. Combine findings into a report sorted by severity, review contract changes, and generate tests for conditions that should always hold.

• Combining findings from multiple Solidity analyzers
• Reviewing security issues in contract upgrades
• Generating Foundry invariant tests

Build runnable Foundry tests that demonstrate smart contract vulnerabilities with before-and-after logs and assertions. Use fork tests, which copy blockchain state, and test helpers to reproduce known DeFi incidents or prepare evidence for a report.

• Writing runnable proofs of concept for vulnerability reports
• Reproducing issues from a fixed blockchain block
• Controlling callers, time, and balances in tests

Uses a completed ZKsync Era investigation with no reportable findings as a defense study. It explains 25 tested attack vectors, the safeguards that blocked them, and criteria for deciding whether to continue reviewing a large bridge protocol.

• Learning defensive design from a completed ZKsync Era investigation
• Reviewing why 25 tested attack vectors failed
• Assessing whether to continue investigating a large bridge

Provides a reference for reviewing DeFi smart contracts, programs that manage blockchain transactions. It organizes vulnerability types with causes, code examples, search patterns, and fixes to help investigate accounting, permissions, boundary conditions, and pricing logic.

• Checking for accounting inconsistencies and missing permission checks
• Comparing normal and alternative code paths
• Reviewing deadline and array boundary conditions

Use when user asks to "build a Solana dapp", "write an Anchor program", "create a token", "debug Solana errors", "set up wallet connection", "test my Solana program", "deploy to devnet", or "explain Solana concepts" (rent, accounts, PDAs, CPIs, etc.). Also use for quick on-chain lookups via public RPC + curl — "what's the balance of <wallet>", "look up transaction <sig>", "token balance for <account>", "check this address on mainnet/devnet". End-to-end Solana development playbook covering wallet connection, Anchor/Pinocchio programs, Codama client generation, Surfpool/LiteSVM/Mollusk testing, security checklists, and JSON-RPC curl lookups against public clusters. Prefers @solana/kit v7 plugin clients (createClient + .use()), wallet connection via @solana/kit-plugin-wallet + @solana/react, web3.js v3 (Kit internals, RC) as the migration target for legacy codebases, and Surfpool for local networks and integration testing.

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Smart contract security audit — 10 DeFi bug classes (accounting desync, access control, incomplete path, off-by-one, oracle, ERC4626, reentrancy, flash loan, signature replay, proxy), pre-dive kill signals (TVL < $500K etc), Foundry PoC template, grep patterns for each class, and real Immunefi paid examples. Use for any Solidity/Rust contract audit or when deciding whether a DeFi target is worth hunting.

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Smart contract security audit — 10 DeFi bug classes (accounting desync, access control, incomplete path, off-by-one, oracle, ERC4626, reentrancy, flash loan, signature replay, proxy), pre-dive kill signals (TVL < $500K etc), Foundry PoC template, grep patterns for each class, and real Immunefi paid examples. Use for any Solidity/Rust contract audit or when deciding whether a DeFi target is worth hunting.

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Analyze and secure Alchemy credentials, browser access, wallet authority, webhook verification, and untrusted chain data. Use when securing an Alchemy-backed application. Trigger with "secure Alchemy", "Alchemy API key exposure", or "verify an Alchemy webhook".

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Route Alchemy work to viem, direct Data APIs, Wallet APIs v5, or Solana Web3.js without reviving the archived SDK. Use when designing shared clients and adapters. Trigger with "Alchemy SDK pattern", "replace alchemy-sdk", or "choose an Alchemy client".

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Migrate archived Alchemy JavaScript SDK integrations to current capability-specific clients with parity, canary, and rollback evidence. Use when removing alchemy-sdk or upgrading Wallet APIs. Trigger with "migrate alchemy-sdk", "replace alchemy-web3", or "upgrade Wallet APIs to v5".

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Build a minimal, reviewable Alchemy EVM read with viem and prove its network, authentication, and failure behavior. Use when starting an Alchemy integration or replacing an SDK sample. Trigger with "Alchemy hello world", "read an Ethereum block", or "test my Alchemy connection".

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Select and prove the current Alchemy client, key type, network, and authentication boundary before integration work. Use when creating or repairing Alchemy connectivity. Trigger with "set up Alchemy", "configure an Alchemy API key", or "choose viem or Wallet APIs".

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