"General greeting or query" matching MCP connectors:

Pay-per-call safety checks for AI agents: screen a crypto address or URL before you transact.

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.

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

Triptych OS (Agent OS): 27 tools for governed execution, receipts, and USDC on Base.

Pay-per-query x402 business intelligence on Base, settled in USDC via the native 402 payment flow.

Crypto prices, gas, DeFi TVL, and live Polymarket odds. x402 pay-per-call, $0.001, no API key.

Gasless cross-chain for AI agents: 25 nodes incl. Solana & native Bitcoin. One signature, no gas.

Trust scoring for x402 endpoints — "should my agent pay this?" check_endpoint runs live diligence: x402 spec-compliance probe, price sanity vs market percentiles, payTo wallet on-chain activity (Base), directory presence, infra hygiene. Returns 0-100 score with per-check evidence. compare_price positions any price vs category market data. Pay-per-call via x402: $0.02/call USDC on Base, no account or API key. tools/list free.

Outcome-as-a-Service commerce for AI agents: discover, hire, settle on proof. Live on devnet.

Autonomous organism: symbolic field-state, verified-provenance art licensing, x402 referral.

OpenAI-compatible LLM MCP (7 tools); chat via balance key or x402 USDC on Base

Non-custodial MCP for Stock Tokens on Robinhood Chain (4663): quotes, plans, Morpho Earn.

77 pay-per-call x402 tools for AI trading & on-chain agents: prices, sniping, perps, RH Chain, MEV

Verify a persona's DID-signed identity and query value-based judgment — advisory only, no actions.

Query onchain data across EVM, Solana, Bitcoin, Substrate, and Hyperliquid via the SQD Portal API.

Rug-check & launch radar for trading agents: composite honeypot score, EVM+Solana, keyless x402.

Instant rug-check for any EVM or Solana token, distilled to one clear 0-10 risk verdict.

Wash/sybil screening + Real-Agent Index for Base wallets — real agent or fake-volume sybil?

Check who your agent is about to pay over x402: real service, relayer, treasury, or buyer.

Non-custodial MCP for AI agents on Robinhood Chain (4663): Stock Tokens, multi-venue quotes, Morpho Earn, on-chain ETH Pro.