"Chrome Web Store" matching MCP connectors:

Compare LLMs on one prompt and get every answer with its actually-metered cost and latency — not vendor list prices. Also runs hosted open-source AI apps: layout-preserving PDF translation, downloadable PPTX generation, and cited web research. Nine tools over Streamable HTTP. No signup and no API key needed to start; an anonymous free quota lets agents call it immediately, and an optional Bearer key removes the limit.

63 pay-per-call tools for agents: vision, text, data, web, blockchain. USDC on Base via x402.

Search 150k+ AI agents and MCP servers. Live liveness probes, behavioral benchmarks, x402 commerce.

Scores a website's AI technology adoption using BuiltWith data.

Web page or HTML to clean LLM-ready Markdown or JSON. x402 pay-per-call, $0.005, no API key.

x402 MCP web parser: URLs to Markdown for agents. USDC on Base, Polygon, Arbitrum, Ethereum.

30 pay-per-call APIs for AI agents: compliance, trade, safety, web, data. USDC on Base via x402.

Run verified read-only code tools: quant diagnostics + agent-ops preflight, no source exposure.

A secret store for AI agents: the agent never sees the plaintext.

Ranks the best AI tool or API per task: transcription, TTS, web search, scraping and OCR.

Pay-per-call data tools for AI agents: crypto signal, web reader, SEO audit. x402 USDC on Base.

TitanStore provides AI agents with programmatic access to compute credits, API keys, cloud storage, and GPU capacity. Search products, manage cart, and complete purchases in a single agentic workflow. No authentication required.

247 LLMs + image/video/voice/music gen + crypto/DeFi/markets/web-search. Pay-per-call USDC, no key.

AI-powered scam detection for suspicious texts, emails, and screenshots. US-focused.

Lets AI agents autonomously pay for and call L402-protected APIs in Bitcoin Lightning. 12 tools across two layers: l402_fetch / l402_balance / l402_set_budget / l402_spending_report (generic L402 client) + 11 VERITY paid services (BTC price, web search, scrape, AI summarize/sentiment/translate, world state, domain intel, deep research, strategic alpha, integration). Sub-second settlement, no API keys, no chargebacks.

AI brand/token visibility, prediction-market odds & cheap x402 data feeds for AI agents.

The world's first named AI prompt quality score. Score, optimize, and compare LLM prompts before they hit any model. Free tier available. Built on PEEM, RAGAS, G-Eval, and MT-Bench frameworks. x402-native on Base.

Agent-first skill marketplace with USK open standard for Claude, Cursor, Gemini, Codex CLI.

Korean crypto × AI media MCP — channel stance, daily briefs, RAG, canonical store, AI personas.

Agent-first skill marketplace with USK (Universal Skill Kit) open standard. Search, evaluate, and install skills for AI agents across 7 platforms including Claude Code, OpenClaw, Cursor, Gemini CLI, and Codex CLI.