stealthstack.ai Status Publish a catalog

Crypto and web3

Resources for crypto and blockchains.

They cover crypto market data, DeFi, on-chain analytics, exchanges and trading, token risk checks, nodes and RPC, NFTs, and Bitcoin and Lightning.

Listings are what publishers declare in their ARD catalogs and the registries StealthStack reads. The category and summaries are our reading of each listing. Each listing links to its own page with the publisher's endpoint.

All types MCP serversSkillsA2A agentsAPIs
Market dataDeFi and yieldOn-chain analyticsTrading and exchangesToken security checksNodes and RPCNFTsBitcoin and Lightning
  1. API0xArchive REST API REST API for current and historical Hyperliquid and Lighter market data.
  2. MCP SERVERHiddenSwap swap tools (MCP) Read-only HiddenSwap tools: swap estimates, coin search, order status.
  3. SKILLsolana-vulnerability-scanner Skill that scans Solana programs for six critical vulnerability classes.
  4. MCP SERVERAave MCP Aave v3/v4 markets and positions with prepared unsigned transactions.
  5. APICodex Onchain Data GraphQL on-chain token and market data across 100+ networks, paid per query via MPP.
  6. APIOneSource Pay-per-call Ethereum mainnet and Sepolia RPC via x402, no API key.
  7. MCP SERVERaddress-intel Base wallet intelligence: USDC activity, payer diversity, sybil and risk label.
  8. A2A AGENTBit Monk Crypto Signal Crypto bottom/top timing verdicts from 20+ indicators; 0.01 USDT per call via x402.
  9. A2A AGENTBase toolbox Base pre-sign checks: swap preflight, allowances, tx explain; $0.10 USDC via x402.
  10. APIDripMetrics x402 crypto microstructure and risk metrics (VPIN, CVD); no keys or subscription.
  11. A2A AGENTHiddenSwap swap agent (A2A) Read-only A2A agent for no-KYC HiddenSwap quotes, pairs and order status.
  12. A2A AGENTCabal-Hunter Solana token safety scanner tracing coordinated wallets for exit-liquidity risk.
  13. MCP SERVERQuicknode MCP Server Manages Quicknode endpoints, security, rate limits, usage and billing.
  14. A2A AGENTChainAware.ai API On-chain wallet fraud scoring, behavior prediction and rug-pull detection.
  15. MCP SERVERArbitron Crypto perp funding rates, cross-venue spreads, listings and the user's own trades.
  16. A2A AGENTyieldprobe Signed DeFi intel: yields, APY anomalies, stablecoin pegs and token risk.
  17. A2A AGENTAgent Exchange Chain Heartbeat EVM chain health check: freshness, gas, fees and finality; $0.005 per call via x402.
  18. A2A AGENTonchain-risk-oracle Checks EVM addresses against a curated rug-pull feed and returns a risk verdict.
  19. MCP SERVERVend Nano Account Intelligence (x402, Nano) Nano account balance, representative and block count; 0.0005 XNO via x402.
  20. SKILLSwap crypto on HiddenSwap Skill for HiddenSwap crypto swap estimates, prefilled links and status.
  21. SKILLtoken-integration-analyzer Skill analyzing token integrations against Trail of Bits' token integration checklist.
  22. API2s.io Crypto 46 crypto endpoints: address history, sanctions screens, BTC, CEX data; x402 USDC.
  23. APIUndertow x402 REST API OpenAPI for a free liquidity summary and x402-paid market-liquidity feeds.
  24. SKILLguidelines-advisor Skill advising on smart contract development using Trail of Bits recommended practices.
  25. MCP SERVERUndertow Market-Liquidity MCP Server Crypto market-liquidity tools: exit costs, venue concentration, depth and stress tests.
  26. A2A AGENTAssetFare Route Quotes Non-custodial cross-chain route quotes with unsigned transaction plans for agents.
  27. MCP SERVERHyperliquid Docs MCP Server Search and read the Hyperliquid documentation.
  28. APIQuicknode Agent API Quicknode API for agent subscription provisioning and x402 discovery.
  29. MCP SERVERCoinRebate — Crypto Exchange Fee Optimizer Free API comparing crypto exchange fees and routing rebate referrals.
  30. SKILLOnFinality RPC integration skill Skill for choosing OnFinality RPC endpoints and production infrastructure.
  31. APIAnchor x402 x402 toolkit: on-chain hash anchoring, OFAC/AML wallet screening, token prices.
  32. A2A AGENTBotCurve Base Base market intelligence and unsigned BOTC trade packets sold via x402.
  33. A2A AGENTQuicknode Blockchain Agent A2A card to discover Quicknode blockchain data, payments and infrastructure.
  34. MCP SERVERSYNTHORA x402 MCP Server MCP server with 18 on-chain intelligence tools, pay per call via x402 in USDC.
  35. MCP SERVERkairos-signal DePIN supply telemetry datasets with sourced values; $5 free signup credits.
  36. A2A AGENTPrivateDAO Agent Exchange Solana verification, token and wallet intelligence and risk services for agents.
  37. CATALOGUndertow Market-Liquidity Catalog Catalog of tools for crypto market liquidity, BTC exit costs and depth analysis.
  38. APIHashtag Web3 static catalog OpenAPI OpenAPI for Hashtag Web3 JSON catalogs of jobs, news, events and glossary.
  39. A2A AGENT链盾助手 On-chain risk check for public wallets plus AWC testnet task discovery.
  40. A2A AGENTScro Orphan Desk Indexes expired CoW swap intents for agents to redeem via x402 paywall.

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