Smart Contracts and Blockchain skills for Claude Code and Codex
Skills for blockchain code and smart contract security: vulnerability scanners for Solana, Cosmos, Substrate, Algorand, Cairo and TON, token integration checks, Move code quality, audit preparation, and wallet, swap and DeFi agents. They help an agent review on-chain code and work with crypto APIs.
Highest-scoring smart contract and blockchain skills in the October 22, 2026 snapshot: emblem-ai-agent-wallet from EmblemCompany/Agent-skills (83/100). Scores come from the Suede Skill Check.
- 22 listed skills
- 6 repositories
- 6 with full pages
14 from official publishers. 5 bundle scripts. 0 connect to an outside service. Listed in Security (10), Business, Sales and Finance (7), Code Review and Code Quality (3), Developer Tools and Frameworks (2).
All 22 smart contract and blockchain skills
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| Skill | Repository | What it does |
|---|---|---|
| emblem-ai-agent-wallet 83/100 · B | EmblemCompany/Agent-skills | Connects to EmblemVault to run review-first, operator-controlled wallet workflows across Solana, Ethereum, Base, BSC, Polygon, Hedera, and Bitcoin, and explains Emblem's authentication model. |
| emblem-ai-prompt-examples 81/100 · B | EmblemCompany/Agent-skills | Provides example prompts for EmblemAI tasks such as research, portfolio review, quote requests, NFT discovery, and prediction-market analysis, with explicit confirmation before value-moving actions. |
| emblem-defi-yield 78/100 · C | EmblemCompany/Agent-skills | Researches DeFi yield opportunities, compares protocols, checks DeFi positions with Nansen, and enters liquid staking via token swaps through EmblemAI. |
| emblem-memecoin-scout 78/100 · C | EmblemCompany/Agent-skills | Finds trending memecoins on Solana, Base, and Hedera, tracks new token launches, and assesses risk with rug-pull detection, holder analysis, and smart money tracking. |
| emblem-portfolio-tracker 78/100 · C | EmblemCompany/Agent-skills | Tracks a crypto portfolio across seven blockchains with aggregated balances in USD, conditional trade profit and loss, and DeFi position tracking through Nansen. |
| emblem-token-swap 78/100 · C | EmblemCompany/Agent-skills | Executes token swaps across six blockchains with automatic route optimization and cross-chain bridging via ChangeNow, using EmblemAI. |
| algorand-vulnerability-scanner 84/100 · B | trailofbits/skills | Scans Algorand smart contracts for 11 common vulnerabilities including rekeying attacks, unchecked transaction fees, missing field validations, and… |
| audit-prep-assistant 88/100 · B | trailofbits/skills | Prepares codebases for security review using Trail of Bits' checklist. Helps set review goals, runs static analysis tools, increases test coverage… |
| cairo-vulnerability-scanner 84/100 · B | trailofbits/skills | Scans Cairo/StarkNet smart contracts for 6 critical vulnerabilities including felt252 arithmetic overflow, L1-L2 messaging issues, address… |
| code-maturity-assessor 84/100 · B | trailofbits/skills | Systematic code maturity assessment using Trail of Bits' 9-category framework. Analyzes codebase for arithmetic safety, auditing practices, access… |
| cosmos-vulnerability-scanner 84/100 · B | trailofbits/skills | Scans Cosmos SDK blockchain modules and CosmWasm contracts for consensus-critical vulnerabilities — chain halts, fund loss, state divergence. 25… |
| entry-point-analyzer 87/100 · B | trailofbits/skills | Analyzes smart contract codebases to identify state-changing entry points for security auditing. Detects externally callable functions that modify… |
| guidelines-advisor 84/100 · B | trailofbits/skills | Smart contract development advisor based on Trail of Bits' best practices. Analyzes codebase to generate documentation/specifications, review… |
| move-code-quality 64/100 · D | 1NickPappas/move-code-quality-skill | Analyzes Move language packages against the official Move Book Code Quality Checklist. Use this skill when reviewing Move code, checking Move 2024… |
| octav-api 70/100 · C | Octav-Labs/octav-api-skill | Integrate with Octav API for cryptocurrency portfolio tracking, transaction history, and DeFi analytics across 50+ blockchain networks. Use when… |
| secure-workflow-guide 84/100 · B | trailofbits/skills | Guides through Trail of Bits' 5-step secure development workflow. Runs Slither scans, checks special features (upgradeability/ERC conformance/token… |
| solana-vulnerability-scanner 84/100 · B | trailofbits/skills | Scans Solana programs for 6 critical vulnerabilities including arbitrary CPI, improper PDA validation, missing signer/ownership checks, and sysvar… |
| substrate-vulnerability-scanner 84/100 · B | trailofbits/skills | Scans Substrate/Polkadot pallets for 7 critical vulnerabilities including arithmetic overflow, panic DoS, incorrect weights, and bad origin checks… |
| token-integration-analyzer 84/100 · B | trailofbits/skills | Token integration and implementation analyzer based on Trail of Bits' token integration checklist. Analyzes token implementations for ERC20/ERC721… |
| ton-vulnerability-scanner 84/100 · B | trailofbits/skills | Scans TON (The Open Network) smart contracts for 3 critical vulnerabilities including integer-as-boolean misuse, fake Jetton contracts, and forward… |
| venice-crypto-rpc 70/100 · C | veniceai/skills | Use Venice as a pay-per-call JSON-RPC proxy to 27 EVM, Starknet, and Solana networks. Covers the public GET /crypto/rpc/networks, POST… |
| x402 84/100 · B | browser-use/browser-use | Set up Browser Use Cloud payments with x402 — pay per request from a crypto wallet (USDC on Base mainnet), no signup or API key. Two setups it works… |
How to choose smart contract and blockchain skills
For contract security, start with Trail of Bits' building-secure-contracts set: audit prep, code maturity, guidelines and the scanner for your chain.
Wallet, swap and portfolio skills move real assets through a provider API. Read SKILL.md for the provider and key each one needs, and test with small amounts or a testnet.
Scanner output is a starting list for a human auditor; ask the agent to show the code path for each finding.
Related topics
Security Auditing and Review 108Vulnerability Scanning 55Finance and Accounting 30Code Quality and Linting 22Personal Finance 5Payments and Stripe 13
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