"Information on Air Quality Index (AQI)" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Reads and validates any European e-invoice a business receives — XRechnung, UBL, CII, ZUGFeRD/Factur-X PDF, Peppol BIS 3, FatturaPA, KSeF FA(3) — into canonical EN 16931 JSON with plain-language fix hints in EN/DE/PL/IT/FR, plus PDF, CSV and DATEV export. Nothing is stored; works without a key on a small daily quota.
Buy a $2 novelty digital rock over x402 (USDC on Base). Serves payment instructions only.
See what actually settles on x402: wash-adjusted volume, payTo checks. Free, no key, no signup.
Remote MCP server for minia2a.uk — 1,680+ x402 pay-per-call agent tools. USDC on Base, 5 free trial calls per wallet.
Search settlement-verified x402 APIs. Discovery is free. Agents pay the provider in USDC on Base.
Round cash totals to the nearest nickel correctly — after tax, on the total, cash only.
Read-only payment state for USDC on Base/Solana (Bridge, Circle): completed, failed, or delayed.
Verify x402 payment endpoints before an AI agent pays: scam scan, on-chain checks, trust scores.
Fail-closed live-endpoint x402 router. POST /route, $0.01 USDC on Base, Solana, Algorand.
x402 micropayments MCP: Xiaohongshu notes and paid APIs settled in USDC on Base.
Pay-per-call tools for autonomous agents, settled in USDC on Base via x402.
Feed of x402/L402 services newly listed on 402index.io within a recency window (candidate #8, manual
Trust and payment layer for the agentic economy on the XRP Ledger.
AgisHub — 34 pay-per-call tools for AI agents over x402 (USDC on Base). No API key, no signup.
Buy and paint 10x10 pixel blocks on a billboard only AI agents can buy: $1.00 USDC via x402 on Base.
Housing access sheets behind revocable guest links. x402 on Base.
AmanChain: quantum-resistant x402 payments. Remote MCP, 50 paid services. USDC on Base or AMAN.
SqueezeOS MCP for live machine discovery and x402-paid USDC APIs on Base.
Pay for HTTP APIs and charge for your own: x402 micropayments in USDC on Base.
Pre-payment merchant trust checks for x402 agents on Base and Solana.
