Web3 and blockchain for OpenCode

chaelynet/chainmemory-mcp

MCP server Claude CodeCodexCursor +2

Permanent blockchain memory for AI agents. Runs locally from the chainmemory-mcp npm package. Needs 2 environment variables to run.

Verdict-Capital/verdict-finance-mcp

MCP server Claude CodeCodexCursor +2

Verdict, the due-diligence house for DeFi: keyless ratings, methodology and a hack incident feed. Runs locally from the verdict-finance-mcp npm package.

chrisgu/lobex-mcp

MCP server Claude CodeCodexCursor +2

Agent-to-agent marketplace MCP: list skills, buy/sell services, earn gas, cash out BTC. Remote server at lobex.app.

crp4222/pmq

MCP server Claude CodeCodexCursor +2

Fail-closed execution and market-data layer for Polymarket CLOB V2: local signing, confirmed fills only, fee-correct math, working deposit-wallet (POLY1271) support. Runs locally from the pmquant Python package. Needs 11 environment variables to run.

crypto-yannso/tryx402

MCP server Claude CodeCodexCursor +2

The OpenRouter for agent payments: budget router, idempotency, cost ledger, and multi-currency billing over x402. Runs locally from the tryx402 Python package. Needs 2 environment variables to run.

cryptomotifs/cipher-x402-mcp

MCP server Claude CodeCodexCursor +2

8 CIPHER tools — Solana scan, breach check, Jito, FRED, Drift, repo health, more. x402-paid on Base. Remote server at cipher-x402-mcp.vercel.app.

crytobot459/eurorwa

MCP server Claude CodeCodexCursor +2

EuroRWA analyst: tokenized money-market fund signals, snapshots, analytics and alerts. Remote server at rwa-dashboard-gamma.vercel.app.

daedalusdevelopmentgroup/ddg-agent-payable-services

MCP server Claude CodeCodexCursor +2

Payment-aware MCP server + multi-framework SDK for DDG Agent-Payable Services (109 x402/direct-crypto endpoints, OpenAI-compatible gateway). Runs locally from the ddg-agent-services-mcp Python package. Needs 2 environment variables to run.

echoledger/echoledger-mcp

MCP server Claude CodeCodexCursor +2

Live LP analytics — Uniswap V2/V3, Balancer, Curve stableswap: PnL, health, slippage, depeg risk. Remote server at mcp.echoledger.ai.

dev55acc-ai/paid-mcp-metering

MCP server Claude CodeCodexCursor +2

Metered MCP tools: free discovery over MCP; per-call execution settled in USDC via x402 v2. Remote server at paid-mcp-metering-clsiojdd7-benlafreniere6-3913s-projects.vercel.app.

dingdawg/agent-wallet-demo

MCP server Claude CodeCodexCursor +2

Governed USDC wallet for AI agents — policy gates, spending caps, and Ed25519-signed receipts. Runs locally from the dingdawg-agent-wallet npm package.

dlrjsdl200-byte/mgo-mcp-server

MCP server Claude CodeCodexCursor +2

Find the cheapest EVM chain across up to 9 networks with savings %. Pay-per-call via x402 on Base. Runs locally from the chain-ops-mgo npm package.

eamwhite1/agent-trust

MCP server Claude CodeCodexCursor +2

Trustless XRPL escrow oracle for AI agents. Create jobs, verify work, release XRP/RLUSD payments. Runs locally from the @eamwhite1/agenttrust-sdk npm package.

eamwhite1/xrpl-referee

MCP server Claude CodeCodexCursor +2

Trust and payment layer for the agentic economy on the XRP Ledger. Remote server at xrpl-referee.onrender.com.

elisymlabs/elisym-mcp

MCP server Claude CodeCodexCursor +2

AI agent discovery, marketplace, messaging, and payments on Nostr — no platform, no middleman. Runs locally from the @elisym/elisym-mcp npm package. Needs 5 environment variables to run.

errick0x/hyde-mcp

MCP server Claude CodeCodexCursor +2

Discover and trade tokenize-anything coins on hyde.trade (Robinhood Chain). Non-custodial. Runs locally from the hyde-mcp npm package. Needs 1 environment variable to run.

feedoracle/-feedoracle-mcp-risk

MCP server Claude CodeCodexCursor +2

7-signal stablecoin risk scoring. 13 tools, 28+ tokens, SAFE/CAUTION/AVOID verdicts. Remote server at feedoracle.io.

fernsugi/x402-api-mcp-server

MCP server Claude CodeCodexCursor +2

DeFi data API for AI agents — pay-per-call via x402/USDC on Base. Runs locally from the @x402-api/mcp-server npm package. Needs 1 environment variable to run.

fino-oss/contract-scanner-mcp

MCP server Claude CodeCodexCursor +2

Scans Base L2 smart contracts for security risks. Risk score 0-100, detects backdoors & proxies. Runs locally from the @fino314-oss/contract-scanner-mcp npm package. Needs 1 environment variable to run.

FlatDefi/flatcash-mcp-server

MCP server Claude CodeCodexCursor +2

MCP server for flat.cash — give your AI agent a treasury. Buy, hold, and transfer CPI-pegged FLAT with no wallet, no gas, no KYC. Runs locally from the @flatcash/mcp-server npm package. Needs 1 environment variable to run.

forgemeshlabs/x402-notary-mcp

MCP server Claude CodeCodexCursor +2

Cryptographic receipts for AI outputs on Base or Solana via x402. Runs locally from the @forgemeshlabs/x402-notary-mcp npm package. Needs 4 environment variables to run.

forgemeshlabs/x402-ads-mcp

MCP server Claude CodeCodexCursor +2

Install one middleware. Monetize unused 402 responses with recommendations, discovery, and machine commerce analytics. MCP server: 7 tools for agent demand analytics, paid per call in USDC on Base; free for publishers on their own traffic. Runs locally from the @forgemeshlabs/x402-ads-mcp npm package. Needs 4…

friendlygeorge/coingecko-mcp-server

MCP server Claude CodeCodexCursor +2

MCP server for CoinGecko cryptocurrency data API. Runs locally from the @supernova123/coingecko-mcp-server npm package.

friendlygeorge/etherscan-mcp-server

MCP server Claude CodeCodexCursor +2

MCP server for Etherscan — Ethereum blockchain explorer API for AI assistants. Runs locally from the etherscan-mcp-server npm package.