"Full-Stack MEAN CRUD Development" matching MCP connectors:

CLSTR reads 100,000+ articles a day from 40,000+ sources in 170+ countries and deduplicates them into single events, then links related events into ongoing situations with a maintained summary and a full timeline. An agent can answer what has happened over the last six weeks, not just what a single headline says right now.

Open AI Visibility Index for crypto and Web3. Weekly share-of-answer measurements for 24 tracked brands across ChatGPT, Perplexity and Gemini, from a frozen versioned prompt panel. Five read-only tools: full index, per-brand lookup, brand list, complete measurement history and methodology. No auth, no API key. Data is CC BY 4.0 with a permanent archive of every weekly snapshot, so any figure can be verified independently.

Open AI Visibility Index for SaaS and AI tools. Weekly share-of-answer measurements for 20 tracked brands across ChatGPT, Perplexity and Gemini, from a frozen versioned prompt panel. Five read-only tools: full index, per-brand lookup, brand list, complete measurement history and methodology. No auth, no API key. Data is CC BY 4.0 with a permanent archive of every weekly snapshot, so any figure can be verified independently.

Search scientific papers with structured experimental data from full-text studies

ILO labour statistics (ILOSTAT) with full provenance: source URL, vintage, license. Remote or stdio.

Search Stack Exchange questions, fetch Q&A threads as markdown, look up tag FAQs and user profiles.

Search PubMed/Europe PMC, fetch articles and full text (PMC/EPMC/Unpaywall), citations, MeSH terms.

Search arXiv, fetch paper metadata, and read full-text content.

7 research and study persona products plus computed research mechanics over MCP: format_citation outputs APA 7 / MLA 9 / Chicago from raw fields, stats_describe computes full descriptive statistics, sample_size and confidence_interval handle survey math honestly, and get_free_skill loads any product's complete free gateway skill.

8 teaching persona and skill products plus computed classroom tools over MCP: readability_report runs a real Flesch-Kincaid analysis with leveling suggestions, grade_curve turns score lists into full distribution statistics, lesson_timer splits class periods, and get_free_skill loads any product's complete free gateway skill.

UN Sustainable Development Goal indicators for all 17 goals, curated by country and year. Free.

World Bank World Development Indicators: curated country-year economy, health, education and more.

Auditable AGI-2027 evidence: eight graded Situational Awareness predictions with pre-registered flip conditions, a 0-100 Thesis Tracker with full score history, and a public market-call ledger where misses stay published. Free, no auth, CC BY 4.0.

UNESCO UIS statistics (education, science, culture) with full provenance and fixed releases.

Query 29,500+ World Bank development indicators for 200+ countries across 60+ years.

Moon phases, moon signs, full/new moon dates 1900-2100, moonrise/moonset for any coordinates.

Stock market trading signals: regime, ranked buy list, stock + sector reads. Free tier + x402 live.

UN Sustainable Development Goals (SDG) Indicators MCP — UN Statistics Division.

PLOS journals — Solr-backed full-text search across all PLOS OA content

Korea stock (KOSPI/KOSDAQ) bottom/top signals: verdict + score, scans. Pay-per-call x402.