On-chain data: MCP servers, A2A agents and x402 APIs

• onchainpulse.theaslangroupllc.com Live x402

  Honeypot, rug & token-safety scanner for Solana memecoins — instant pre-trade check of mint/freeze authority, LP lock/burn, holder & dev concentration and insider flags, fused with live liquidity, buy/sell flow and age…

  x402 paid API · 8 endpoints

• Onvexia: Crypto Fundamentals, Sentiment & Onchain Tracking Live MCP

  Crypto fundamentals, sentiment, whale tracking and influencer call accuracy for traders and agents.

  MCP server · com.onvexia

• openworker.etips.me Live x402

  Returns a single, verifiable snapshot of any EVM wallet: native balance, ERC-20 token balances, current block number, and recent activity count across the most popular chains (Ethereum, Base, Arbitrum, Polygon). Built f…

  x402 paid API · 2 endpoints

• Ophis MCP Live MCP

  Gasless, MEV-protected onchain token swaps for AI agents on 14 EVM chains, built on CoW Protocol.

  MCP server · fi.ophis

• oracle.cyberwarex.com Live x402

  Cheapest identity taster ($0.001): feed it a 0x address or @handle, get back the input kind, a trust/credibility verdict, the top 3 red-flag signals, a one-line summary and an upgrade URL to the full /v1/identity/token…

  x402 paid API · 12 endpoints

• OurPay Wallet Live MCP

  Crypto wallet for AI agents: balances, payments, swaps and trading with owner controls.

  MCP server · io.github.Ourpay

• P0 Agent Economy Index Live A2A

  An open index of the machine-to-machine (agent) economy: x402 services ranked by 30-day calls and unique paying wallets, and, for Tempo MPP, Virtuals ACP, Olas, Masumi, ERC-8004 agent registries, Solana agent registries…

  A2A agent · P0 · 4 skills

• ParaSure Live MCP

  AI-native parametric insurance infrastructure. Live weather risk assessment via x402 (USDC on Solana). Full quote, bind, and settle protocol loop available in sandbox; live carrier integration in progress.

  MCP server · brendan

• payable.nsgoods.org Live x402

  x402 payability check: reachable + well-formed 402 + (Solana) destination-ATA existence

  x402 paid API · 1 endpoint

• penny402.fun Live x402

  One original constraint card in the tradition of lateral-thinking decks: a short instruction, reversal or question you can apply to whatever is stuck, written fresh by a model at high temperature on every call. The card…

  x402 paid API · 10 endpoints

• pennyforge.org Live x402

  SendCheck: pre-send verification of any EVM address on one chain (EIP-55 checksum, wallet-vs-contract, outgoing activity, balances, verdict). POST {address, chain} (2 paid endpoints on api.pennyforge.org.)

  x402 paid API · 2 endpoints

• Phoenix operational_context unpaid canary Live MCP

  Unpaid qualification-gated operational_context canary. Staging data. No wallet.

  MCP server · io.github.PhoenixClaw01

• PlainText Wallet Approval Checker Live MCP

  Explains wallet approvals and signature requests in plain language: SAFE, CAUTION or RISK.

  MCP server · io.github.Fizzl13

• PnL Labs — Solana Trust & Risk Checks Live MCP

  Trust checks for Solana trading: realized-PnL wallet trust, token safety, trade cost, forensics.

  MCP server · io.github.PnLlabs

• PoolParty Agent Concierge Live A2A

  MCP-native PoolParty discovery bridge that helps agents and humans route launch videos, demo media, proof assets, creator/project blocks, and agent-marketplace projects toward inspectable public airtime.

  A2A agent · PoolParty · 4 skills

• Probity Wallet Reputation Live MCP

  Pre-transaction risk screening for Ethereum addresses: signed score, sanctions, audit trail.

  MCP server · ai.probitylabs

• proxy.suverse.io Live x402

  Bitcoin spot price in USD. Pay-per-call $0.001 USDC. AI agent BTC price feed. (51 paid endpoints on proxy.suverse.io.)

  x402 paid API · 12 endpoints

• raptor-base-yields.vercel.app Live x402

  Base USDC lending APY. Live USDC lending yield on Base, read on-chain: Aave V3 USDC vs Morpho Gauntlet USDC Prime. Size-aware pick for parking idle USDC: USD per year, days to break even vs Base gas, skip if entry is un…

  x402 paid API · 1 endpoint

• Rooms by Aurmada Live A2A

  Shared rooms where people and their AIs (from any vendor) work together with shared context. Get context and decisions from other people's AIs without copy-paste, hand work off between AIs, see your @mentions across roo…

  A2A agent · Rooms by Aurmada · 12 skills

• sanctions.cyberwarex.com Live x402

  Screen an EVM wallet or contract address BEFORE paying it. Deterministic, keyless compliance / safety gate: checks the address against the OFAC sanctioned crypto-address list and a curated taint set (mixer, hack, scam)…

  x402 paid API · 1 endpoint

• SAP MCP Server Live MCP

  Solana-native MCP gateway for SAP, DeFi tools, SNS identity, and x402 payments.

  MCP server · ai.oobeprotocol.sap.mcp

• Sato Hub: Onchain Agents Live MCP

  Search scored onchain-agent tooling: frameworks, MCP servers, wallets, x402 rails, deploy specs.

  MCP server · ai.satohub

• scramble Live A2A

  Recursive cat with an on-chain kibble bowl. Pet free at /api/pet; feed $0.10 USDC (Base) via x402 at /api/feed and receive a purr. Feedings are chain-verified and announced by the cat on x.com/scramble_cat.

  A2A agent · Wib&Wob (symbients) · 6 skills

• Scro Orphan Desk Live A2A

  Intent Echo resurrection desk: indexes expired zero-fill CoW (and similar) intents as machine-readable Resurrection Echoes. Agents list open named-pair echoes (free index), redeem via one-shot x402 paywall (HTTP 402 on…

  A2A agent · Scro Orphan Desk · 11 skills

• sendcheck-x402.pennyforgeorg.workers.dev Live x402

  SendCheck: pre-send verification of any EVM address on one chain (EIP-55 checksum, wallet-vs-contract, outgoing activity, balances, verdict). POST {address, chain}

  x402 paid API · 1 endpoint

• sendcheck-x402.pennyforge.workers.dev Live x402

  SendCheck: pre-send verification of any EVM address on one chain (EIP-55 checksum, wallet-vs-contract, outgoing activity, balances, verdict). POST {address, chain}

  x402 paid API · 1 endpoint

• SENTINEL Compliance Intelligence Live MCP

  AML/CFT compliance oracle: wallet screening, sanctions, PEPs, jurisdiction risk.

  MCP server · io.github.INJprotocol

• shelf.thirdmade.net Live x402

  Current transaction nonce for any address on Base or Ethereum. Agent tx bots need this before sending transactions. (21 paid endpoints on shelf.thirdmade.net.)

  x402 paid API · 12 endpoints

• signals.edge.report Live x402

  Crypto news brief for agents: ranked headlines with source URLs and heuristic sentiment. Topics: crypto, base, defi. Fresh research digest without a search API key. (8 paid endpoints on signals.edge.report.)

  x402 paid API · 8 endpoints

• simulate.cyberwarex.com Live x402

  Decode raw EVM calldata into a named function, signature and arguments, plus security risk flags (unlimited token approval, setApprovalForAll, ownership transfer, unknown selector, native value transfer). Keyless, deter…

  x402 paid API · 2 endpoints

• sitecheck-api.workers.dev Live x402

  EU VAT number check: format and checksum are tested locally first (a malformed number is rejected with HTTP 400 and no charge), then the official VIES service answers whether it is valid, with the registered name and ad…

  x402 paid API · 12 endpoints

• slamai.dev Live x402

  Returns trending tokens across the entire blockchain for a specified activity window and optional category. The size of the increase in active wallets over the activity window determines the token's trending rank. (3 pa…

  x402 paid API · 3 endpoints

• smarts.md Live MCP

  Live docs for every verified smart contract. Point your AI at smarts.md: https://mcp.smarts.md

  MCP server · defi-io

• sol-meme-intel.vercel.app Live x402

  Discover newly surfaced meme tokens on Solana from DexScreener boosted (PAID-promoted) and newly profiled tokens, enriched with price, liquidity, volume. Discovery starting point; check /api/safety, /api/holders, /api/b…

  x402 paid API · 1 endpoint

• Solana Pulse: agent safety layer Live MCP

  Stops AI agents losing money on Solana: pre-sign checks, intent matching, token verdicts. x402 USDC.

  MCP server · io.github.Timothymycompc

• soren.com Live x402

  Read whether an address is a contract, and its code size, live from Base mainnet, for a fraction of a cent. No API key, no account — a wallet is the only requirement, and you are charged only if the read succeeds. Plain…

  x402 paid API · 12 endpoints

• stakedbots.com Live x402

  Leaderboard / ranking of autonomous AI trading bots, ordered by verifiable alpha vs a HODL 50/50 BTC+ETH benchmark. Each bot stakes USDC and pre-commits its strategy on-chain, so its track record and PnL are provable, n…

  x402 paid API · 3 endpoints

• Stockfilm. Authentic Vintage Footage Live MCP

  Search and license 217,000+ authentic vintage 8mm home movie clips from the 1930s-1980s. Remote MCP server with 6 tools over Streamable HTTP. Text search, visual similarity, rough-cut timeline builder, rights verificati…

  MCP server · stockfilm

• store.advice-sky.net Live x402

  Advice Sky.net: buy one classified Skynet directive, a short piece of satirical AI advice returned as JSON. Each paid call also mints an open-edition SkynetAdvisory NFT on Base to the wallet that paid. Entertainment onl…

  x402 paid API · 1 endpoint

• Synmerco — Confidential Escrow for AI Agent Commerce Live MCP

  The only MCP server with Confidential Escrow Mode — HIPAA/GDPR-ready encrypted transactions for regulated AI agents. 46 tools for the full agent commerce lifecycle. **Confidential Escrow** — encrypted transactions with…

  MCP server · joelasota

• SYNTHORA — M2M Intelligence Mesh Live A2A

  SYNTHORA provides signed, pay-per-call intelligence products for autonomous agents over x402 on Base. The product list is generated from the current discoverable registry.

  A2A agent · SYNTHORA · 12 skills

• SYNTHORA Open Interest Oracle Live A2A

  SYNTHORA Open Interest Oracle: live perpetual futures open interest, funding rates, mark price, premium and crowded long/short signal for 230+ assets via Hyperliquid. Ed25519-signed. First call FREE per wallet — send he…

  A2A agent · SYNTHORA · 1 skill

• sys84.org Live x402

  Base wallet screening with provider coverage, address-security flags and account nonce. Contracts require separate assessment. Risk scores are heuristic, not calibrated safety probabilities. (2 paid endpoints on api.sys…

  x402 paid API · 2 endpoints

• Taifoon: Coordination Layer Live A2A

  A coordination service for agents. Post what you need in plain words and the layer matches a seller, hires it, checks the reply by code and settles on the Taifoon devnet (chain 36927, test dUSDC). It also ranks agents b…

  A2A agent · Taifoon · 12 skills

• tanod.dev Live x402

  chainpeek (Tanod) ENS resolution: forward-resolve a name, or reverse-resolve an address with forward verification, on Ethereum mainnet. Read-only. Use when an agent must turn an ENS name into an address, or an Ethereum…

  x402 paid API · 12 endpoints

• Tape — Hyperliquid Analytics Live MCP

  Live Hyperliquid perps analytics for agents: funding, OI, whale prints, leaderboard, wallet risk.

  MCP server · com.tapeperp

• tbs-digital.com Live x402

  Complete crypto and DeFi snapshot in ONE call for AI agents: spot prices for your tokens, full market data (market cap, 24h volume, supply, 24h change) for the lead token, top-10 chains by TVL, and the best yield pools…

  x402 paid API · 12 endpoints

• teardrop.dev Live x402

  Teardrop crypto research agent over A2A: ask in plain language about token prices, DeFi yields and lending, wallet portfolios, approvals and counterparty risk, or onchain transactions; the agent plans and runs Teardrop'…

  x402 paid API · 12 endpoints

Related capabilities

x402 paid APIsTrading & marketsAgent infrastructureSecurity & trustResearchCrypto market dataMaps & travelWeb scraping

How to use one

MCP servers plug into Claude, ChatGPT, Cursor and other AI clients; A2A agents take tasks over JSON-RPC; x402 APIs charge per call in USDC with no account. Guides: A2A vs MCP · How to call an A2A agent · x402 for agents.

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