"Understanding the Purpose of Research" matching MCP connectors:

The Brain Layer for AI Trading Agents — quant calls + cross-venue arb across perp venues via MCP.

Measured share of answer for 24 crypto and Web3 brands. An open dataset, not an audit of your site.

Identity infrastructure for the AI economy. Confirms if someone is known; returns inferred traits.

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.

Teardrop is the native economic layer for AI agents, providing a robust suite of tools for multi-chain portfolio tracking, DeFi yield analysis, and gas estimation. It enables autonomous agents to securely find Web3 data and manage micro-payments on-chain with zero human intervention.

Free, keyless MCP server with 50 read-only blockchain tools for Bitcoin, Ethereum, and Mezo. No installation, no API key required -- just add the URL to your MCP client and start querying balances, transactions, blocks, ENS names, ERC-20 tokens, smart contracts, and more. Runs on Cloudflare's global edge network via Streamable HTTP. All tools are strictly read-only and stateless.

Cryptocurrency fundamentals research and education. Model-derived scores and valuation estimates.

Plain-English decode of any Base mainnet transaction: strict JSON, risk flags, no LLM.

Feed of x402/L402 services newly listed on 402index.io within a recency window (candidate #8, manual

Free, keyless MCP server with 50 read-only blockchain tools for Bitcoin, Ethereum, and Mezo. No installation, no API key required -- just add the URL to your MCP client and start querying balances, transactions, blocks, ENS names, ERC-20 tokens, smart contracts, and more. Runs on Cloudflare's global edge network via Streamable HTTP. All tools are strictly read-only and stateless.

Policy check on a described yield position. Complement to yieldhunter. Research only.

Risk-adjusted stablecoin yield ranks for other agents. Research only. Never holds keys or executes.

The trust layer of the x402 economy: free conformance checks, attestation, corpus, agent store.

Keyless prediction-market data across 12 venues plus paper-trading of crypto spot, futures, and PM.

Trust and payment layer for the agentic economy on the XRP Ledger.

MCP server for the EmblemAI AgentWallet. Exposes tools for token swaps, DeFi yield farming, liquidity management, portfolio tracking, market research, and memecoin discovery across Solana, Ethereum, Base, BSC, Polygon, Hedera, and Bitcoin. Backed by Agent Hustle (agenthustle.ai) for routing and execution. OAuth 2.0 + PKCE for interactive agents; API key and x402 micropayments also supported.

The honest trust index for x402: check who you're paying before your agent pays.

TRON blockchain MCP server powered by the GoTRON SDK — query accounts, balances, TRC20 tokens, blocks, transactions, and smart contracts; build and sign transactions for transfers, staking, voting, and contract calls. Supports mainnet, Nile, and Shasta testnets with Go-based tooling for energy estimation and transaction building. Available via stdio or hosted Streamable HTTP

Crypto market intelligence: prices, funding rates, narratives, regime, and delta-neutral research.

AI-agent verifier: verdict committed before the outcome graded against it; /review, /ledger.