"OpenAI's Web Retrieval Infrastructure" matching MCP connectors:

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.

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.

Give your agent web search and authoritative datasets: S&P Global, FRED, OECD, SimilarWeb & more.

CIA World Factbook country indicators: infrastructure, energy, demographics, economy, 2002-2026.

Brand health & trend footprint across PSFK expert graphs with citable sources, not web summaries.

Per-call data for agents: graded behavioural science, dark-pattern detection, web fetch, geocode.

Query the HokAI catalogue of AI tools, agents, models, companies and infrastructure services.

Forensic archive of javaBin & JavaZone origins (1998-2007) as a signed KCP knowledge web.

China's apparel supply chain data for AI: 1,000+ suppliers, 350+ fabrics, 170+ clusters.

Paid MCP web research for agents: search, extraction, citations, and x402 payment discovery.

1000+ AI tools in one MCP server from web scraping, lead gen, finance, media, research, and dev tools from 80+ providers. Pay as little as $0.01/call

MCP server for SEO and web analysis data including keyword rankings, backlink profiles, site audits, and traffic analytics for AI agents.

Multi-engine scholarly research server for search, traversal, full text, and reading lists.

Lifestyle medicine health intelligence via x402 micropayments. 637+ peer-reviewed references.

An API for forecasting and multi-agent research. FutureSearch provides endpoints that use web research agents at scale, for higher accuracy than web search or single agent approaches alone can achieve. forecast runs a team of forecasters to predict future dates, numbers, and probabilities. multi_agent orchestrates multiple researchers to answer one question. agent_map runs one research agent over every row of a dataset, scaling to thousands of rows and agents.

Pharma intelligence endpoint offering structured search, semantic vector search, and entity retrieval across clinical trials, drugs, targets, diseases, patents, papers, deals, FDA labels, epidemiology, HEOR, financial reports, news, and translational medicine.

Claim-level provenance preflight for sanitized nonfiction passages; automated triage only.

Citable retrieval across papers, books, patents, Wikipedia, and live social sources.

The everything Zotero MCP server — Web API v3 + local API, safe writes, citations, search.

STIL lab at ETS Montreal — knowledge base and paper search via ArXiv and Semantic Scholar.