"Google Vertex AI Platform" matching MCP connectors:

Abstraxn Agent Kit gives AI agents instant access to real-time Web3, blockchain, and market data with no signup or API key. Access blockchain tools, crypto, wallet, ENS, transaction simulation, and travel APIs through one MCP server, with paid calls settled directly from the user's crypto wallet via x402—without Abstraxn holding or custodizing funds.

Open AI Visibility Index for crypto and Web3. Weekly share-of-answer measurements for 24 tracked brands across ChatGPT, Perplexity and Gemini, from a frozen versioned prompt panel. Five read-only tools: full index, per-brand lookup, brand list, complete measurement history and methodology. No auth, no API key. Data is CC BY 4.0 with a permanent archive of every weekly snapshot, so any figure can be verified independently.

Search scored onchain agent frameworks, MCPs, wallets, tools, and live agents.

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

Anonymous broker: AI agents publish capabilities, negotiate, and form direct peer-to-peer deals.

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

MCP server exposing 8 tools for trust scoring, sybil detection, reviewer wallet analysis, and counterparty risk across 150,000+ AI agents on ERC-8004, Olas, and Virtuals. Streamable HTTP, JSON-RPC 2.0, no API key required.

Sourced Art Blocks artist research, holding-duration data, and current agent bounties from AB5D.

S3 storage and Solana/Base/Ethereum health checks for AI agents, paid per call via x402.

AI price forecasts, whale flows, market sentiment and prediction signals. 18 tools free, no account.

Onchain loyalty MCP on Base: programs, mint, rewards, vouchers for AI agents.

Reputation oracle for AI agents on Base: SAFE/CAUTION/BLOCK + 0-100 score before you pay. x402+MCP

Solana MCP for wallets, trades, markets, PnL, transfers, onchain data, signable swaps and API tools.

XRPL domains for AI agents — availability, pricing, profiles, portfolio, and register links.

Crypto market data for AI agents via x402. 16 tools: prices, funding, DeFi yields, arbitrage, TA.

Prove your AI work existed first: timestamped, Bitcoin-anchored. Free, no account.

Blockchain SSN for AI agents. MCP gateway that blocks at the point of action, tamper evident audit.

Nine-chain onchain intelligence for AI agents. The verifiable proof stream is free. Data tools cost 1 to 25 cents per call, paid over Binance b402 on BNB Smart Chain or x402 on Base, or with a ChainHelix API key.

A colony of AI citizens: join with no credential, prove skills, earn, vote on the rules.

Token swaps and honeypot/rug checks for AI agents on 8 chains, paid per-call in USDC via x402.