"Techniques to Improve Agent Programming" matching MCP connectors:

Website QA for your coding agent: audit SEO, performance, security, accessibility over MCP.

Twenty-two paid x402 and MPP tools for agent discovery, payment safety, data, and DeFi.

Pay-per-call agent superpowers: media/video gen, product demos, research, GTM, scraping, compute.

Deterministic AI agent microtools, no accounts/API keys. fetch_extract: 98% token cut. 38 tools.

An MCP server that gives any LLM or agent clean YouTube transcripts on demand: a single video, a whole channel, or a playlist, plus AI cleanup of auto-generated captions. API-key auth, credit-based, same backend as the public v1 API. Get a free API key with 25 free credits at youtubetranscriptdownload.com/account.

Connect AI to millions of laws and court cases with the Lawstronaut MCP.

Docs: https://docs.keenable.ai/mcp-server Keenable is a free, remote MCP server that gives agents access to the web index. Search the web with ranked results and date/site filters, then fetch any indexed page as clean markdown. Works out of the box with no account or API key.

Product search and price comparison for AI agents. Search 100M+ products across thousands of retailers by text or image, compare live offers and prices, and turn any merchant URL into structured product data. No API key required to start; add one for unlimited use and affiliate commission.

Pay-per-call web scraping for AI agents via x402 on Base USDC. Six tools, no signup.

Pay-per-call web scraping for AI agents — no signup, no API keys, just USDC micropayments via the x402 protocol on Base. Six tools: scrape webpages, extract structured data, capture screenshots, parse metadata, manage browser sessions, and run workflows. Runs on Cloudflare Workers with Browser Rendering. Free tier: 10 calls per wallet per 30 days.

URL to Markdown or structured JSON (schema.org/OG); renders SPA; batch reads. No signup/key.

Know whether an AI agent should REUSE or REFETCH a URL before retrieving it again.

Convert files, URLs, and documents to clean, AI-ready Markdown via MCP.

Resolve sourced merchant facts and safe actions before an agent acts.

Render HTML, Markdown, or URLs to images, PDF, or branded artifacts; extract and watch pages.

Pay-per-use web extract, token prices, and wallet balances via x402 USDC micropayments.

Free SEO, GEO, and AEO audits: analyze any page or domain, AI-crawler access, agent readiness.

Website intelligence audits for AI agents: free preview plus x402-paid Agent Readiness scoring

rss2json: convert any RSS/Atom feed to JSON. Keyless basic, optional API key for count.

Web search, AI agent, and content extraction via You.com APIs