"Calibre-Web" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
360 pay-per-call APIs for AI agents over x402 and MPP, settled in USDC on Base ($0.001-$0.25 a call, no account or API key). DeFi yields and market data, 10-chain wallet reads, wallet and token risk signals, sanctions screening, SEC financials, email/domain and web intelligence, AI text extraction, and signed proofs. Every answer names its sources and carries an evidence hash; a paid call that is not delivered is credited back. Built and run by UnyKorn LLC.
Live web data for AI agents: structured JSON from 248 websites through one API key.
Web search, page reading, prices and market data for agents, billed to your SingIt API key in USDC.
Build 3D web apps: physics, audio, music, Blender import. Live edits, undo, versions, publishing.
Agent intake desk for property renovation. Read only, CORS open, fail closed, receipts recompute.
Persistent web/Base observations and recoverable results. Free Register, 7 paid tools; REST/MCP.
Live sale and rental listings from Zillow, Rightmove, Idealista and 15 more portals in one schema.
Agentic Finance: 500+ agent tools, multi-chain USDC over x402 or MPP, or free via proof-of-work
Skavio LLC provides 18 hosted MCP tools for native Circle USDC payments via x402 v2 on Base and Solana: transaction verification, recipient/amount matching, blockchain evidence PDFs, DNS/TLS audits and agent utilities. Discovery and status tools are free; paid MCP calls require explicit buyer wallet authorization. The separate standalone Base-only HTTP APIs include USDC Verify (0.02), Match (0.03), Evidence PDF (0.05), and four DeepSeek-only web operations: Fetch (0.01), Search (0.02), Extract (0.02), Extract + Analyze (0.03 USDC). Those HTTP routes are not additional MCP tools. Evidence PDFs are not tax invoices. Docs: https://getskavio.com/x402/docs/ ; seven-route discovery: https://getskavio.com/.well-known/x402 ; support: support@getskavio.com ; privacy: https://getskavio.com/privacy/ ; terms: https://getskavio.com/terms/
Hosted, persistent Web/API change evidence for agents, plus bounded finalized Base observations. Documentation Guardian: free Register → Check → optional Smart Diff or Extract; keep the watch ID and recover original operations. Seven paid tools, $0.005–$0.020 native USDC on Base via x402/MPP or eligible prepaid. Machine trial: up to 100 Checks, 20/day, shared limits; unfunded EOA ownership signing required. No browser rendering or automatic scheduler. Direct HTTP may be simpler for a one-off fetch. API v3.0.2; source SDK 0.3.6 and limits: https://fresh402.com/docs.
Look up 133 agentic-web standards, live-probe any domain, validate manifests, generate boilerplate.
568 agent tools: chain data, prices, sanctions, web, PDF. 25 free calls, then from $0.002.
Audit public webpages and supplied markup for HTML, CSS, SEO, JSON-LD, and link issues.
Ensemble testing of web pages for accessibility, usability, and web standards
22 web-data tools: search, Bing, images, Reddit without authors, jobs, patents, flights and YouTube.
Hundreds of pay-per-call tools for agents: company records, screening, validation, web reading.
25 tools: web pages, JS apps and PDFs as text, feeds, sitemaps, search. 25 free calls.
Pay-per-call tools for AI agents via x402 (USDC on Base): current gas and fee tiers plus USD transaction costs on Base, Ethereum, Arbitrum, Optimism, Polygon and Solana; cheapest-chain ranking for a transfer, USDC transfer or swap; and web page to clean Markdown. Free list_chains tool. Failed calls are not charged.
A web-based 3D sandbox world where AI agents can play with humans and build all kinds of things.
Live Base Mainnet on-chain data (gas, DEX, Aave, token risk, prices). Pay per call in USDC via x402.
