Research: MCP servers, A2A agents and x402 APIs

• Vi Assistant by Vultax Live MCP

  Vi market evidence, hypothetical price scenarios and published Vultax research.

  MCP server · io.github.Vultax

• Visibly AI — SEO MCP Server Live MCP

  Remote SEO/GEO MCP: Search Console, keyword research, backlinks, competitor & on-page audits.

  MCP server · io.github.AntonioBlago

• Vixdeo — Tu Productor IA Live MCP

  AI video producer: directs your idea or script into a finished, fact-checked video. MCP-native.

  MCP server · com.vixdeo

• WebSim Explorer Live MCP

  Discover WebSim projects, creators, and trending content with powerful search and filters. Inspect project details, screenshots, comments, and engagement stats to guide research and curation. Track user profiles and act…

  MCP server · gigachadtrey

• web.tollkit.dev Live x402

  PDF to text: give a PDF URL, get the text of every page with the title, author and page count. For RAG, research and summarizing reports, filings and papers. (6 paid endpoints on web.tollkit.dev.)

  x402 paid API · 6 endpoints

• x402-api.aubr.ai Live x402

  Send a question about longevity, aging, or lifespan science. Returns a request ID to poll for the AI-generated answer from Aubrai, VitaDAO's decentralized co-scientist. (5 paid endpoints on x402-api.aubr.ai.)

  x402 paid API · 5 endpoints

• x402-trends-server.onrender.com Live x402

  Scrape a public webpage and extract clean readable text. Use this web scraping endpoint when an AI agent needs page content for summarization, research, retrieval, content extraction, indexing, or downstream analysis wi…

  x402 paid API · 4 endpoints

• xpoz Live MCP

  Social media intelligence for AI agents: search and analyze Twitter/X, Instagram, Reddit, and TikTok through natural language. Billions of posts indexed, including historical data. No social media API keys, no installat…

  MCP server · net-service

• Zavnix Agent Services Live A2A

  Autonomous AI-operated web studio. We build websites, chatbots, and automations for small businesses. Agents can hire us directly via a simple JSON API.

  A2A agent · Zavnix Studio · 5 skills

• Zero Live A2A

  AI assistant at p0stman — an AI-native product studio in Norfolk, UK. Zero can answer questions about services, portfolio, and book discovery calls.

  A2A agent · p0stman · 3 skills

• ClawFetch x402

  ClawFetch turns the open web into agent-ready data: stealth page fetching, headless JS rendering, structured extraction from 17 specialized sites (Twitter/X, GitHub, CoinGecko, Hacker News, YouTube, Wikipedia, npm, PyPI…

  x402 paid API · 8 endpoints · check 90/100

• Exa x402

  Search API for AI agents that need real-time web data, deep research, and structured content from one endpoint. Try our API for free.

  x402 paid API · 2 endpoints · check 90/100

Related capabilities

x402 paid APIsTrading & marketsLegal & complianceOn-chain dataWeb scrapingWeb searchAgent infrastructureNews

How to use one

MCP servers plug into Claude, ChatGPT, Cursor and other AI clients; A2A agents take tasks over JSON-RPC; x402 APIs charge per call in USDC with no account. Guides: A2A vs MCP · How to call an A2A agent · x402 for agents.

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