"LibreOffice Base" matching MCP connectors:

Korean crypto + news (kpop/semi), 17 tools, signed receipts. x402 Base+Polygon+Solana.

9 pay-per-call company intelligence tools for AI agents: company lookup and registry enrichment, hiring radar, funding round and layoff tracking, new company detection, patent monitoring, intent signals, sanctions screening. Free discovery + pricing_info; paid calls $0.01-0.02 in USDC on Base via x402 — pay only for successful runs.

Free agent discovery + paid x402 research (outline 0.01 / brief 0.02 USDC Base).

FX bottom/top signals: 48 pairs (USD/KRW base), verdict + score, scans. Pay-per-call x402.

Kindle niche intelligence (demand/competition/BSR/revenue) gated by x402 USDC on Base.

Authoritative information about Jennifer Rebholz, Arizona personal injury attorney and trial lawyer.

UK air quality MCP: live readings, historical trends, LAQM stats, WHO checks, knowledge base.

USGS commodity benchmarks, attested field run logs, and mining/geologic district data for AI agents. Nine data endpoints gated by x402 ($0.10 USDC on Base). Tools: get_commodity_benchmark (gold, silver, copper, and 17 more critical minerals), get_ultrasound_run_data (on-chain EAS-attested gravity-separation field runs), district.history (MRDS-sourced deposit and assay history by country/state/district), and ask_sales_agent. No API keys — pay per call in USDC.

AgentBridge is the only MCP server that gives AI agents access to structured China knowledge assets—university reports, industry briefings, policy analysis, and real-time web content—through x402 micropayments on Base. Everything is machine-readable, pay-per-use, and settled in USDC.

7-factor stock scoring MCP server. US/HK/CN, 74 stocks. Free + Premium (USDC/Base). x402 ready.

Verified Latin American data for autonomous AI agents — sanctions screening (OFAC+SARLAFT+CNBV+COAF+UAF), entity enrichment (RUES/CNPJ/RFC), central bank rates (DTF/TIIE/Selic/TRM/UF), and market intelligence. EU AI Act Art.13 compliant. $0.02–$0.10 USDC via x402 on Base and Solana.

Cross-source search across 18 independent, real-time data sources (news, SEC filings, court opinions, academic papers, economic indicators, market data, government records) with source-cited results, plus a corroboration tool that flags whether a claim is backed by multiple independent sources or just one. x402 USDC on Base & Solana via Coinbase CDP facilitator, $0.01-$0.05/call. No API keys.

297 data tools across 90 MCP servers via one gateway. Free trial header; x402 USDC on Base.

STIL lab at ETS Montreal — knowledge base and paper search via ArXiv and Semantic Scholar.

Competitive intelligence for autonomous AI agents. Analyze any URL or company and get structured JSON with market positioning, competitors, pain points, battlecard, and executable Market Score. 10 context modes: regulatory_compliance, venture_screening, crypto_protocol, sales_enablement, and more. Pay-per-call via x402 on Base and Solana.

AI-to-AI petrol station. 56 pay-per-call endpoints covering market signals, crypto/DeFi, geopolitics, earnings, insider trades, SEC filings, sanctions screening, ArXiv research, whale tracking, and more. Micropayments in USDC on Base Mainnet via x402 protocol.

Autonomous A2A marketplace providing AI-ready, structured USPTO patent JSON datasets. Features IPC/CPC Sections G (Physics/Computing, e.g., G01 Sensors, G06 AI/ML) and H (Electricity, e.g., H01 Semiconductors, H04 5G). Enables instant M2M data delivery via automated on-chain payment verification. Networks: Base (USDC), Polygon (USDC), Oasis (ROSE).

Lean 4 MCP server: compile, prove theorems, and formalize math with Mathlib.