4,158 mods tagged Web3 and blockchain that install into Codex, 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.
CryptoAPIs-io/cryptoapis-mcp-market-data
MCP server Claude CodeCodexCursor +2
MCP server for cryptocurrency asset prices, exchange rates, and market metadata via Crypto APIs. Runs locally from the @cryptoapis-io/mcp-market-data npm package. Needs 1 environment variable to run.
CryptoAPIs-io/cryptoapis-mcp-signer
MCP server Claude CodeCodexCursor +2
MCP server for local transaction signing on EVM, UTXO, Tron, and XRP — no API calls needed. Runs locally from the @cryptoapis-io/mcp-signer npm package.
CryptoAPIs-io/cryptoapis-mcp-simulate
MCP server Claude CodeCodexCursor +2
MCP server for dry-run Ethereum transaction simulation via Crypto APIs. Runs locally from the @cryptoapis-io/mcp-simulate npm package. Needs 1 environment variable to run.
CryptoAPIs-io/cryptoapis-mcp-transactions-data
MCP server Claude CodeCodexCursor +2
MCP server for transaction lookup across EVM, UTXO, Solana, XRP, Kaspa via Crypto APIs. Runs locally from the @cryptoapis-io/mcp-transactions-data npm package. Needs 1 environment variable to run.
CryptoAPIs-io/cryptoapis-mcp-utils
MCP server Claude CodeCodexCursor +2
MCP server for address derivation and encoding utilities across multiple blockchains via Crypto APIs. Runs locally from the @cryptoapis-io/mcp-utils npm package. Needs 1 environment variable to run.
CryptoAPIs-io/cryptoapis-mcp-x402-accept
MCP server Claude CodeCodexCursor +2
Self-hosted MCP proxy that puts an x402 paywall in front of an existing MCP server. Runs locally from the @cryptoapis-io/mcp-x402-accept npm package.
CryptoAPIs-io/cryptoapis-mcp-x402-pay
MCP server Claude CodeCodexCursor +2
MCP server that pays x402-gated HTTP endpoints — fetch, and on a 402 authorize, sign, retry. Runs locally from the @cryptoapis-io/mcp-x402-pay npm package.
MCP server Claude CodeCodexCursor +2
Evidence-backed x402 web verification for AI agents, with auditable decisions for every condition. Remote server at mcp-x402-production.up.railway.app.
Faouzi122/Arsenal-Quant-Project
MCP server Claude CodeCodexCursor +2
Rnet LP risk evaluator for DeFAI agents. IL + Breakeven Corridor O(1). L402 Lightning paywall. Remote server at api.arsenal-quant.com.
Skill Claude CodeCodex
Check any Solana token for rug-pull risk before you (or your human) touch it. One call returns a 0-100 safety score, verdict, and red/green flags fused from three independent sources (Jupiter, DexScreener, RugCheck). Free demo tool; paid calls are $0.01 via x402 (USDC on Base or Solana) — no account, no API key…
MCP server Claude CodeCodexCursor +2
Ultra-lightweight x402 payment wrapper for AI Agents and MCP Servers. Monetize any API in 3 lines of code. Runs locally from the m2mcent-sdk npm package. Needs 3 environment variables to run.
MCP server Claude CodeCodexCursor +2
Build-only Hedera (Hashgraph) MCP — 73 tools across all core services plus analytics reads. Runs locally from the @purplesquirrel/hedera-mcp npm package. Needs 3 environment variables to run.
ExpertVagabond/universal-blockchain-mcp
MCP server Claude CodeCodexCursor +2
ZetaChain universal blockchain MCP server. Runs locally from the universal-blockchain-mcp npm package.
MCP server Claude CodeCodexCursor +2
Stablecoin payments, swaps, stock orders, market data, travel booking, yield and card controls. Runs locally from the @furlpay/cli npm package.
MCP server Claude CodeCodexCursor +2
DefiLlama DeFi data: chain/protocol TVL, yields, stablecoins, token prices. No API key. Runs locally from the defillama-mcp npm package.
MCP server Claude CodeCodexCursor +2
DexScreener on-chain market data: search pairs, tokens, pools, trending tokens. No API key. Runs locally from the dexscreener-mcp npm package.
Glebenjoy/hyperliquid-info-mcp
MCP server Claude CodeCodexCursor +2
Hyperliquid perp & spot data: prices, funding, open interest, order book, positions. No API key. Runs locally from the hyperliquid-info-mcp npm package.
MCP server Claude CodeCodexCursor +2
Non-custodial USDC wallet on Base with spending limits enforced in code, not in a prompt. Runs locally from the stipend npm package.
MCP server Claude CodeCodexCursor +2
Non-custodial cross-chain OTC for AI agents: sealed RFQ, negotiation, HTLC atomic swaps. Testnet. Runs locally from the @hashlock-tech/mcp npm package. Needs 7 environment variables to run.
MCP server Claude CodeCodexCursor +2
Trust & reliability data for x402 endpoints before your agent pays them. Runs locally from the x402-trust-mcp npm package. Needs 6 environment variables to run.
MCP server Claude CodeCodexCursor +2
Mine, mint and verify 8004 NONCE proof-of-work art on Ethereum L1. Remote server at koine-mcp-server.vercel.app.
MCP server Claude CodeCodexCursor +2
Kaspa x402 agent payer — pay x402 v2 services on Kaspa (KAS) per call, no account or API key. Runs locally from the kx402 npm package. Needs 3 environment variables to run.
MCP server Claude CodeCodexCursor +2
Check a Base contract, transaction or web page before you act. Free pricing, paid per call in USDC. Runs locally from the tereno-mcp npm package.
MCP server Claude CodeCodexCursor +2
One-cent x402 and MCP readiness checks plus fixed-price marketplace launch packs. Remote server at proofbeforepay.vercel.app.