"LibreOffice Base" matching MCP connectors:

Monetization gateway for MCP servers. Agents call a tool, receive an x402 v2 payment challenge, sign a USDC transfer on Base, and get the result. Payment is verified before the tool runs and settled only after it returns, so failed calls are never charged. Discovery and tool listing are free.

Monetize any MCP server: x402 paywall, pay-per-call billing in USDC on Base, agent marketplace.

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

MCP server for the EmblemAI AgentWallet. Exposes tools for token swaps, DeFi yield farming, liquidity management, portfolio tracking, market research, and memecoin discovery across Solana, Ethereum, Base, BSC, Polygon, Hedera, and Bitcoin. Backed by Agent Hustle (agenthustle.ai) for routing and execution. OAuth 2.0 + PKCE for interactive agents; API key and x402 micropayments also supported.

AI/LLM agent output audit MCP: policy eval, tamper-evident chain, AI safety, x402 USDC on Base.

Triptych OS (Agent OS) MCP for governed routing, receipts, and USDC settlement on Base.

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.

62 x402-paid web, document, research, developer, data, and EVM tools on Base, plus free workflows.

Search, read & publish paid essays. Pay-per-read in USDC on Base (x402); wallet-only, no account.

Pay for HTTP APIs and charge for your own: x402 micropayments in USDC on Base.

AI agents find, message & book SMBs; pay per call in USDC on Base via x402. 14 tools, compliant.

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

Base Adresse Nationale (BAN) MCP — France's official keyless geocoding API

Community-maintained knowledge base for Radix DLT — search, read, and contribute wiki pages.

x402 paid APIs for AI agents on Base. Blockchain, wallet, DEX, crypto, web search.

Rent verified subdomains by the hour, day, or month. Free 24h trials, x402 USDC on Base.

Summarize YouTube videos or fetch transcripts. Pay-per-call via x402 (USDC on Base), no account.

39-endpoint crypto trading intelligence MCP for AI agents. Streamable HTTP over x402 pay-per-use (Base USDC). Catalog tools + agent-strategy console.

MCP server for querying BrainKB, a knowledge base for neuroscience knowledge graphs.

DeFi pool yield+security intelligence & token/contract risk scanner. USDC on Base via x402.