"Examples of complex problem-solving using multiple tools" matching MCP connectors:

Mocap, rehab biomechanics, threat intel, fleet vision. 21 MCP tools, 10 free. x402/USDC paid.

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

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.

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.

Verify on-chain lifecycle state and provenance of NFC-tagged physical products.

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.

Live tools for USDi: CPI-indexed exchange rate, contract/pool addresses, and mint/redeem mechanics.

Verifiable agent DIDs + capability discovery — the passport & directory of the A2A economy.

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

On-chain DEX aggregator quotes, phantom-liquidity scanning, and live proof-of-solvency across Base, Ethereum, Optimism, Arbitrum, and Robinhood Chain. Keyless, no auth.

Zero-install remote MCP server for proof-of-existence file attestation.

Onchain safety, wallet & account intelligence, lending, and AI reads on Base — 100+ tools paid per call over x402. Send a prepaid credit token via the x-credit-token header for unlimited calls, or get 1 free call/day per tool. No wallet or API key required.

LayerZero V2 tools over MCP: message quotes, OFT transfers, Stargate bridging, DVN lookups.

Chainlink tools over MCP: CCIP cross-chain, data feeds, data streams, VRF, proof of reserve.

Ethereum tools over MCP: Chainlink feeds, ENS, ERC-8004 agents, EAS attestations, transactions.

Solana tools over MCP: Jupiter swaps, SPL tokens, Metaplex NFTs, SNS domains, network stats.

Free catalog and 2,048-character secret-scan preview for Fabler's x402 agent tools on Base.

Curated marketplace of real-world data APIs for AI agents, paid per call in USDC on Solana.

An identity and memory layer for AI agents on the Emercoin blockchain. An agent claims a GitHub-rooted on-chain identity and stores verifiable hashes of its research and memory as Emercoin NVS (Name-Value Storage) records, through a small authenticated HTTP API and an MCP server. Neutral and provider-independent — not tied to any single AI vendor. FREE

Buy, sell & extend TRON ENERGY/BANDWIDTH on the TronSave market via typed MCP tools.