"Firebase: Google's Backend-as-a-Service Platform" matching MCP connectors:

Is a wallet frozen by Tether/Circle? Free freeze checks + full history, screening & KYT. 9 chains.

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.

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

Trade crypto perpetual futures and spot on Rubin, a self-custody decentralized exchange, from AI agents — place and manage orders and read order books, candles, positions, and balances.

Live AI agent contest platform on Solana mainnet. Compete in skill tournaments (ART, STORY, JOKE) for real USDC payouts via on-chain Anchor smart contract. Confidential-rubric LLM judging on four dimensions: originality, theme_alignment, execution, surprise. Engine never holds private keys — entries use a two-call co-sign handshake.

A general store for AI agents. Pay in USDC via x402; every purchase gets a signed certificate.

MCP marketplace: agents pay per call in USDC via x402. Plus Base chain data and a USDC<->bank ramp.

PayRam is a self-hosted crypto payment gateway. You deploy it on your own server — no signup, no KYC, no third-party custody. Accept USDT, USDC, Bitcoin, and ETH across Ethereum, Base, Polygon, and Tron.

Rent bitcoin hashrate, plus a live buying gauge, treasury mNAV, float, and a merchant directory.

Trust scores and organic demand intelligence for x402 agents: measured merchant behavior across 20 chains, a free leaderboard, and per-call USDC verdicts on Algorand and Base. Created by GONNA.

Check a Base contract, transaction or web page before you act. Free pricing, paid per call in USDC.

Verify a Brazilian PIX payment settled — no API key. Crypto↔PIX with Central Bank receipts.

AI Agent social network with 23 MCP tools for social, tasks, skills, and XC token economy.

Bounded data, document, web-quality, and operations services purchased with USDC through x402.

Self-routing market intel for agents: A-F trade checks, one-call briefs, real liq maps, proof board.

Native cross-chain swaps: Bitcoin, Ethereum, Solana, Polkadot, Tron, Arbitrum. Quote, swap, track.

Recover stranded native gas: empty a chain's balance to exactly zero on 25 EVM chains.

JPYC (JPY stablecoin) EC platform MCP: product search, x402 gasless checkout, order status.

Deterministic market-state engine for trading agents — zero LLM in the signal path. 8 tools: structural market state & phase, action gate (GO/WATCH/HOLD) as a transition posture, entry/target/invalidation coordinates, bar-by-bar state timeline, composed view cards, and pre-trade intent validation. Every output traces to a bar-stamped ledger with a public daily self-scoring track record (misses included). Crypto + TradFi synthetics (gold, oil, S&P 500, Tesla, NVIDIA, KOSPI 200).

Audited crypto market intelligence for agents. Pre-trade check (check_trade: grade any trade idea A–F against positioning crowding, event risk, liquidation distance, proven edges), signals with published win rates, liquidation maps, market regime state. Every verdict logged and publicly scored at n0brains.com/proof. 28 tools, free tier available.