Web3 & Crypto
Blockchain, cryptocurrency, Web3 development
saft-review
by skala-io
"SAFT (Simple Agreement for Future Tokens) review and advisory skill for crypto founders, token issuers, and investors. Use when user (1) uploads a SAFT/token warrant for review, (2) asks questions about how SAFTs work, (3) requests to draft a SAFT, or (4) asks about token fundraising structures. Triggers on keywords like SAFT, token warrant, token side letter, future tokens, token sale, ICO, TGE, token generation event, vesting, lockup, crypto fundraising."
jurisdiction-advisor
by skala-io
"Advise startup founders on choosing the best jurisdiction and legal entity for their business. Triggers when users ask about where to incorporate, which state/country to register a company, choosing between Delaware vs other states, offshore vs US incorporation, entity types (C-Corp, LLC, PBC), or jurisdiction selection for specific industries (crypto, AI, SaaS, GameDev, solopreneurs). Also triggers for questions about startup formation, company registration, or corporate structure decisions."
megaeth-developer
by 0xBreadguy
End-to-end MegaETH development playbook (Feb 2026). Covers Foundry project setup with MegaETH-specific config, wallet operations, token swaps (Kyber Network), eth_sendRawTransactionSync (EIP-7966) for instant receipts, JSON-RPC batching, real-time mini-block subscriptions, storage-aware contract patterns (Solady RedBlackTreeLib, transient storage), MegaEVM multidimensional gas model, WebSocket keepalive, bridging from Ethereum, Privy headless signing for ultra-low latency, debugging with mega-evme, x402 Permit2 payments on MegaETH (standard flow via x402ExactPermit2Proxy/x402UptoPermit2Proxy at canonical addresses), legacy Meridian x402 payments, and Warren Protocol for on-chain website hosting. Use when building on MegaETH, using Foundry, managing wallets, sending transactions, deploying contracts, integrating Privy embedded wallets, ERC-7710 delegation framework for scoped on-chain permissions, MetaMask Smart Accounts Kit for smart account creation and delegation management, integrating x402 Permit2 payments or Meridian/x402 paid APIs or agent actions, hosting websites on-chain with Warren, or integrating MegaNames (.mega naming service) for name registration, resolution, subdomains, subdomain marketplace (selling/buying subdomains with token gating), and text records.
tempo
by tempoxyz
Use this skill when the user wants to call an API, make an HTTP request, discover available services, or access external data with automatic payments. Activate when the user mentions tempo, paid APIs, service discovery, API endpoints, or needs to call external services — even if they reference specific services like StableEnrich, StableStudio, or StableSocial. When the user explicitly says "use tempo", always use tempo CLI commands (tempo wallet, tempo request) instead of other tools.
ethereum-wingman
by austintgriffith
Ethereum development tutor and builder for Scaffold-ETH 2 projects. Triggers on "build", "create", "dApp", "smart contract", "Solidity", "DeFi", "Ethereum", "web3", or any blockchain development task. ALWAYS uses fork mode to test against real protocol state.
multiversx-flash-loan-patterns
by multiversx
Atomic lend-execute-verify pattern for MultiversX smart contracts. Use when building flash loans, atomic swaps, temporary grants, or any operation that lends assets, executes a callback, and verifies repayment within a single transaction.
mvx_dapp_audit
by multiversx
Auditing dApps and standard Frontend flows.
multiversx-defi-math
by multiversx
Financial math patterns for MultiversX smart contracts — precision management, half-up rounding, safe rescaling, and percentage calculations. Use when building any DeFi contract that handles financial calculations, fees, rates, or token math.
multiversx-crypto-verification
by multiversx
Cryptographic operations in MultiversX smart contracts. Use when hashing data (SHA256, Keccak256, RIPEMD160), verifying signatures (Ed25519, secp256k1, secp256r1, BLS), or encoding signatures in on-chain logic.
multiversx-spec-compliance
by multiversx
Verify smart contract implementations match their specifications, whitepapers, and MIP standards. Use when auditing for specification adherence, validating tokenomics implementations, or checking MIP compliance.
multiversx-payment-handling
by multiversx
Handle payments in MultiversX smart contracts. Use when receiving, validating, or routing EGLD/ESDT payments via self.call_value(), Payment types, or payable endpoints. Covers single, multi, optional, and mixed payment patterns.
mvx_sdk_js_contracts
by multiversx
Smart contract operations for MultiversX TypeScript/JavaScript SDK.
multiversx-blockchain-data
by multiversx
Read on-chain state in MultiversX smart contracts. Use when accessing caller info, account balances, block timestamps, ESDT token metadata, local roles, code metadata, or any data from self.blockchain().
multiversx-dapp-audit
by multiversx
Audit frontend dApp components for security vulnerabilities in wallet integration and transaction handling. Use when reviewing React/TypeScript dApps using sdk-dapp, or assessing client-side security.
mvx_sdk_js_wallets
by multiversx
Wallet and key management for MultiversX TypeScript/JavaScript SDK.
mvx_entry_points
by multiversx
Identify and analyze MultiversX Smart Contract entry points (#[endpoint], #[view], #[payable]).
multiversx-protocol-experts
by multiversx
Deep protocol knowledge for MultiversX architecture including sharding, consensus, ESDT standards, and cross-shard transactions. Use when reviewing protocol-level code, designing complex dApp architectures, or troubleshooting cross-shard issues.
mvx_sdk_py_contracts
by multiversx
Smart contract operations for MultiversX Python SDK.
mvx_defi_math
by multiversx
Financial math for MultiversX DeFi — precision management, half-up rounding, safe rescaling, percentage calculations.
multiversx-smart-contracts
by multiversx
Build MultiversX smart contracts with Rust. Use when app needs blockchain logic, token creation, NFT minting, staking, crowdfunding, or any on-chain functionality requiring custom smart contracts.
multiversx-constant-time
by multiversx
Verify cryptographic operations execute in constant time to prevent timing attacks. Use when auditing custom crypto implementations, secret comparisons, or security-sensitive algorithms in smart contracts.
mvx_constant_time
by multiversx
Verifying constant-time operations in crypto implementations.
mvx_sdk_go_core
by multiversx
Core network operations for MultiversX Go SDK - Proxy, VM Queries.
multiversx-dapp-frontend
by multiversx
Adapt React applications to MultiversX blockchain with wallet connection, transactions, and smart contract interactions. Use when app needs Web3, blockchain, wallet login, crypto payments, NFTs, tokens, or smart contract calls.