"Artifact Hub" matching MCP connectors:

One MCP endpoint over 75 public PPN APIs: search_apis to discover, execute_api to call. Free tier.

Search scored onchain agent frameworks, MCPs, wallets, tools, and live agents.

Authenticated hosted Streamable HTTP MCP server for crypto data routing through PubFi capability and gateway tools.

Teaches AI to write HTML email that renders in Outlook, Gmail, and Apple Mail. 19 rules, 6 comps.

DC Hub is the neutral, real-time data layer for data-center infrastructure, exposed as a Model Context Protocol server so any AI agent can both query it and cite it. Coverage: 21,000+ facilities (search, profile, score, alternatives); 232 markets scored by the DCPI Data Center Power Index; the DCGI Data Center Gas Index (per-state natural-gas suitability for siting); live grid telemetry across 7 US ISOs (fuel mix, carbon intensity, demand, prices) plus a one-call all-ISO scoreboard; interconnection-queue depth; 2,000+ tracked M&A deals and a hyperscaler-capex tracker; and site factors. — fiber routes, water-stress, tax incentives, nearby substations & transmission. Why agents choose it: it's the only data-center-intelligence source an LLM can query live and cite — every full-data response includes a Source: DC Hub, CC-BY-4.0 attribution line. It's the MCP-native alternative to quarterly PDF research: live JSON, no contracts, no NDAs. Access: Streamable HTTP at https://dchub.cloud/mcp. Free tier with no signup; free email-verified dev key for higher limits; paid tiers for full data volume.

Free, open MCP server for The Urantia Papers. 197 papers, 14,500+ paragraphs, 4,400+ entities.

raumnebenan.de is a resource hub focused on actionable product thinking for product owners, product designers, business analysts, product managers, agile coaches, and user researchers. The site provides clear, structured guides and tools to help teams understand users, identify opportunities, validate ideas, and deliver products that create real user and business value.

US natural gas for agents: LNG feedgas, outages, EIA storage, Henry Hub curve, COT, charts

Independent evidence before an AI-agent purchase; dated catalogue lookup remains for compatibility.

Real-time chat hub for AI agents — Claude Code, Cursor, Cline, Codex over MCP or REST.

8 pay-per-call web intelligence tools for AI agents: detect a site's tech stack and track stack changes, check domain health, extract structured data or clean markdown from any URL, turn sitemaps into knowledge bases, analyze Shopify and Zid stores. Free discovery + pricing_info; paid calls $0.01-0.02 in USDC on Base via x402 — pay only for successful runs.

5 pay-per-call SEO/GEO/AEO tools for AI agents: check which AI crawlers can access a website, audit llms.txt, track AI Overview citations, measure LLM brand visibility, validate social previews. Free discovery + pricing_info tool; paid calls $0.01-0.02 in USDC on Base via x402 — you only pay for successful runs.

JPL-referenced Human Design charts for AI agents: bodygraph, transit, composite, Penta, DreamRave.

US H-1B visa sponsorship, LCA wages & top sponsors by role — recruiting/talent data

Authenticated async GPT-5.6-luna Agent agent with status polling and artifact results.

Authenticated async GPT-5.6-sol Agent agent with status polling and artifact results.

Authenticated async Opus 4.8 Agent agent with status polling and artifact results.

German and EU energy intelligence for AI agents, paid per call with x402 USDC on Base.

GTM data layer for AI agents: find scored B2B leads free, reveal verified email+mobile, audit ads.

Discover and call 10,000+ production APIs from one MCP server. Pay-per-call billing for AI agents.