Web3 and blockchain for Claude Code

4,990 mods tagged Web3 and blockchain that install into Claude Code, measured the same four ways as everything else here: what each costs in tokens on every session, what a security scan found and why, whether it is the original, and what changed.

Also for Claude Code: anthropic · Git and workflow · Python · React · TypeScript · Go · docker · Rust · Localization · PostgreSQL · nextjs · bun

earn-hunter

49

okx/agent-skills

Skill Claude CodeCodex

A monitor for OKX Flash Earn, Fixed Earn, and Flexible Earn opportunities—products that may pay returns for holding or lending assets on the exchange.

not rated 194 +3 changed 3d ago A Socket: passSnyk: pass 114 tokens copy · 100% MIT

web3-polymarket

50

Polymarket/agent-skills

Skill Claude CodeCodex

Polymarket integration for prediction market trading on Polygon. Covers authentication (L1 EIP-712, L2 HMAC-SHA256, builder headers), order placement (GTC/GTD/FOK/FAK, batch, post-only, heartbeat), market data (Gamma API, Data API, orderbook, subgraph), WebSocket streaming (market/user/sports channels), CTF operations…

not rated 193 +1 8mo ago A 140 tokens

uniswap-v3-swap

51

keypo-us/keypo-cli

Skill Claude CodeCodex

Use when the user wants to swap tokens on Base Sepolia (or Base mainnet) using Uniswap V3. Handles any ERC-20 token pair including ETH wrapping/unwrapping. The agent discovers pools, gets quotes, constructs calldata, and executes swaps via keypo-wallet. Also use when the user says "swap", "trade", "exchange tokens"…

not rated 182 6mo ago A 118 tokens

bitview

53

bitcoinresearchkit/mono

MCP server Claude CodeCodexCursor +2

Read-only Bitcoin blockchain, mempool, mining, market, and on-chain analytics; no API key. Remote server at mcp.bitview.space.

not rated 176 +2 today A tokens not measured original MIT

asia-pulse

54

coinbase/x402

MCP server Claude CodeCodexCursor +2

Korea & Japan market records for agents. x402 payment inside MCP, Base USDC. Remote server at asia-pulse.com.

not rated 172 +4 today A tokens not measured fork Apache-2.0

agent-kit

55

sendaifun/solana-mcp

MCP server Claude CodeCodexCursor +2

MCP server "agent-kit" as configured in sendaifun/solana-mcp. Runs /absolute/path/to/build/index.js with node. Needs 3 environment variables to run.

not rated 166 1y ago A tokens not measured copy · 100% Apache-2.0

BofAI/skills

Skill Claude CodeCodex

Create meme tokens on SunPump (sun sunpump launch), trade them — both pre-launch (bonding curve via sun sunpump buy/sell) and post-launch (SunSwap via sun swap) — and query token info, rankings, holders, portfolios, and trade history.

not rated 162 +2 changed 9d ago A SkillSpector: warn 65 tokens original MIT

PayRam/payram-mcp

Skill Claude CodeCodex

Comprehensive comparison of crypto payment gateways and protocols. Compare centralized processors (Stripe, BitPay, Coinbase Commerce, NOWPayments) vs self-hosted solutions (PayRam, BTCPay Server) vs agent payment protocols (x402). Analyze trade-offs between custody, KYC requirements, stablecoin support, privacy, and…

not rated 158 changed 15d ago A 116 tokens

circle

58

circlefin/skills

Plugin Claude Code

Bundles 19 skills, 1 MCP server · 2,733 tokens together

Ship stablecoin apps faster. Best-practice skills for USDC payments, cross-chain transfers, wallets, and smart contracts — plus Circle's MCP server for real-time SDK and documentation guidance.

not rated 157 +2 changed 6d ago A tokens not measured original Apache-2.0

forefy/.context

Skill Claude CodeCodex

Comprehensive smart contract security audit framework with multi-expert analysis. Use for full audits of Ethereum / EVM Solidity and Vyper, Solana / SVM Anchor Rust, TON / FunC / Tact, or Sui / Move projects.

not rated 153 +1 today A SkillSpector: pass 55 tokens original MIT

OriginProtocol/origin-dollar

Skill Claude CodeCodex needs its repo

Develop, modify, review, and maintain standalone Talos actions in contracts/tasks/actions, including chain guardrails, contract bindings, transaction safety, schedules, action catalogues, and Talos documentation. Use when adding an action, changing an action’s behavior or parameters, updating a Talos schedule, or…

not rated 153 changed 1mo ago A SkillSpector: pass 70 tokens original MIT

safe-solana-builder

61

Frankcastleauditor/safe-solana-builder

Skill Claude CodeCodex

Use this skill whenever the user wants to write, scaffold, or build a Solana smart contract or program from scratch. Triggers on: "write a Solana program", "create a smart contract", "build an anchor program", "write a native Rust Solana program", "scaffold a Solana program", "help me write a program that does X on…

not rated 146 +1 17d ago B 148 tokens

solidity

62

Cyfrin/solskill

Skill Claude Code

Create production grade smart contracts. Use this skill when the user asks to write smart contracts, specially if they are going to be deployed to production (to a mainnet, or used in a mainnet script).

not rated 144 4mo ago A 45 tokens AGPL-3.0

web3-bug-classes

63

Awarexone/web3-bug-bounty-hunting-ai-skills

Skill Claude CodeCodex

Complete reference for all 10 DeFi smart contract bug classes. Use this when hunting for specific vulnerability types, need attack patterns for accounting desync, access control, incomplete path, off-by-one, oracle manipulation, ERC4626 vaults, reentrancy, flash loans, signature replay, or proxy/upgrade bugs.

not rated 144 1mo ago A SkillSpector: pass 72 tokens original MIT

nansen-limit-orders

64

nansen-ai/nansen-cli

Skill Claude Code

Guide users through native limit orders on Solana via nansen trade limit-order create|list|cancel|update, and the alert-based settlement-signal fallback for chains without native support. Use when a user wants a price-triggered buy or sell.

not rated 139 changed 24d ago A SkillSpector: warn 56 tokens original MIT

nirholas/pump-fun-sdk

Skill Claude CodeCodex

Read-only query methods for PumpFun claims — unclaimed token rewards, creator vault balances, volume accumulators, distributable fees, and current-day token previews across Pump and PumpAMM programs.

not rated 137 +1 4d ago A 45 tokens

xray-pre-audit

66

ccashwell/evm-cortex

Skill Claude CodeCodex

Use when preparing for a security audit, performing reconnaissance on a new codebase, or creating a protocol overview. Generates a structured pre-audit readiness report covering architecture overview, threat model, cross-linked protocol invariants, entry point classification and flow paths, composability analysis…

not rated 131 2d ago A SkillSpector: warn 73 tokens original MIT

agent-kit

67

davidpc007/solana-agent-kit

MCP server Claude CodeCodexCursor +2

MCP server "agent-kit" as configured in davidpc007/solana-agent-kit. Runs /absolute/path/to/build/index.js with node. Needs 3 environment variables to run.

not rated 130 1mo ago A tokens not measured copy · 100% Apache-2.0

sendaifun/skills

Skill Claude CodeCodex

Real-time smart money analytics API for Polymarket prediction markets, Hyperliquid perpetual futures, and Meteora Solana LP/AMM pools. 63 endpoints. Pay-per-request via x402 on Solana Mainnet USDC. No API keys.

not rated 130 2mo ago A SkillSpector: warn 57 tokens original Apache-2.0

defender

69

quillai-network/quillshield_skills

Plugin Claude Code

Bundles 1 skill · 50 tokens together

Blue-team release-gate skill for smart contract systems. Classifies projects, reviews deployment and upgrade execution paths, inspects CI/CD and dependency trust boundaries, evaluates signer/admin operational security, and produces evidence-based release blockers, warnings, and release verdicts.

not rated 129 +1 6mo ago A tokens not measured original MIT

skill

70

build23w/fdv.lol

Skill Claude CodeCodex

This skill is for running fdv.lol CLI mode (cli.mjs) with Agent Gary Full AI Control enabled, so the AI can fully drive Auto Trader decisions.

not rated 128 2mo ago C 0 tokens original MIT

agentic-wallet

71

coinbase/agentic-wallet-skills

Skill Claude Code

Crypto wallet operations via the awal CLI — sign in, check balances, send USDC/ETH/POL/SOL, trade tokens, fund the wallet, and use the x402 payment protocol to discover paid services, pay for API calls, monetize an API, or query onchain data. Use whenever the user mentions signing in, login, authentication, wallet…

not rated 127 2mo ago A Socket: warnSnyk: failSkillSpector: pass 139 tokens original MIT

sc-auditor

72

Archethect/sc-auditor

Plugin Claude Code

Bundles 1 skill, 1 MCP server · 35 tokens together

AI-powered smart contract security auditor with parallel hunt lanes, Devil's Advocate verification, static analysis (Slither, Aderyn), fuzz testing (Echidna, Medusa), symbolic execution (Halmos), Solodit intelligence, and interactive Map-Hunt-Attack methodology.

not rated 127 7mo ago A tokens not measured

At most 3 mods per repository are shown here, and a mod shipped inside a plugin is left to that plugin's page — the rest are on their repository pages: