MCP Servers

On-chain DeFi smart contract auditor, arbitrage scanner, and agent tollbooth via x402 on Base.

The x402 agent market on Base: sellers, prices, on-chain payments, operators, buyers. Dated.

Ranked search over 15k+ live x402 services by real 30-day usage; free top-5, paid depth via x402.

Single-connection meta-router indexing 500+ MCP servers & A2A tools with 85% token compression and

Domain lookup (DNS records + RDAP registrar/age/expiry), bulk, and SPF/DKIM/DMARC audit via x402.

Email verification for AI agents: syntax, MX, disposable, role, score. $0.001 USDC/call via x402.

Test any x402 paid URL without paying: 402, PAYMENT-REQUIRED, USDC, amounts, payTo, EIP-712, CORS.

200+ x402 paid data APIs for AI agents: prediction markets, verified weather, econ, SEC filings

SEC EDGAR company briefs for agents: cited synthesis, XBRL metrics. x402/USDC, no account.

Buy private git repos and agent skills with USDC over x402. Read the manifest free, then pay.

Paid x402 help: debug 402 errors, review MCP manifests, rewrite Bazaar listings. USDC on Base.

Authorize x402 payments before signing with request-bound, signed safety decisions.

Audits NEXUS's own x402 payment logs against its own delivery logs and issues a signed proof-of-deli

Programmatic web-scraping MCP server powered by x402 micro-transactions on Base.

Autonomous HTTP 402 Web Scraping Mesh on Base for $0.02 USDC.

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

34 data tools: Polymarket skill, FDA and hospitals, oil, attention, travel, SEC filings

Public demo: evaluate AI-agent payment authorization and approval policy. No signing, no settlement.

Search the public Xavio catalog and create firm checkout quotes.

95 MCP tools for iOS — build, test, simulate, automate UI, capture, and diagnose.

XDG desktop entry keys, body discarded