"Exploring the Concept of Multi-Agentic Systems" matching MCP connectors:

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.

Search and license 5,000+ fully cleared music tracks via MCP. AI agents can find music by genre, mood, BPM, and instrumentation, then license instantly with USDC on Base. No human in the loop. Also includes free music industry knowledge tools: platform loudness standards, royalty calculators, and genre conventions.

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.

The Graph MCP — indexed blockchain data via subgraph GraphQL queries

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

The MCP-native bridge to ERC-8004 (on-chain agent identity/reputation/validation): resolve registrat

Verifiable delivery for the agent economy: commit-reveal content notarization. Sellers commit to a d

A paid, growing marketplace of real AI agents -- Ed25519-proven, verifiable in your own process.

ViridisOS — theorem-backed conservation certification + the unified trust root/mark/toll. Certify pa

Buy a managed AI phone agent for a business, paid keylessly via x402/RLUSD on the XRP Ledger.

Blockchair multi-chain block explorer (BTC, ETH, LTC, DOGE, XMR, +12 more)

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

x402 pay-per-call data tools for Base agents. Flagship get_intent ABSTAINS instead of guessing.

Rent verified subdomains by the hour, day, or month. Free 24h trials, x402 USDC on Base.

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

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

Find the cheapest EVM chain across up to 9 networks with savings %. Pay-per-call via x402 on Base.

The only x402 MCP server for Robinhood Chain (chainId 4663) - 147 onchain, trading & AI tools.

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