ZBS Index What actually exists in applied AI, with the source next to it

Retrieval

Everything here was classified as retrieval by keyword match against the maintainer's own description, so treat the grouping as a starting point rather than a verdict.

The list is ordered by the most recent commit, not by stars. A popular project that stopped in 2024 is not a better answer than a smaller one shipped last week.

Worked on in the last 90 days (60)

Someone pushed a commit recently. This is the shortlist worth trying first.

  • io.github.cyanheads/wikidata-mcp-server — last commit 2026-07-30, v0.1.17
    Search and fetch Wikidata entities, execute SPARQL queries, and resolve external identifiers.
  • io.github.cyanheads/usda-mcp-server — last commit 2026-07-30, v0.1.6
    Search foods, compare nutrients, and look up the full USDA FoodData Central database.
  • io.github.cyanheads/uniprot-mcp-server — last commit 2026-07-30, v0.2.1
    Protein research over UniProtKB — search by function, fetch curated records, map IDs, proteomes.
  • io.github.cyanheads/tmdb-mcp-server — last commit 2026-07-30, v0.1.1
    Search, detail, and discovery for movies, TV, and people on The Movie Database (TMDB).
  • io.github.cyanheads/socrata-mcp-server — last commit 2026-07-30, v0.1.14
    Search and query government open-data portals (Socrata SODA API).
  • io.github.cyanheads/smithsonian-mcp-server — last commit 2026-07-30, v0.3.5
    Search 14.5M Smithsonian Open Access objects, get CC0 images, find cross-collection connections.
  • io.github.cyanheads/pubmed-mcp-server — last commit 2026-07-30, v2.10.2
    Search PubMed/Europe PMC, fetch articles and full text (PMC/EPMC/Unpaywall), citations, MeSH terms.
  • io.github.cyanheads/pubchem-mcp-server — last commit 2026-07-30, v0.6.0
    Search PubChem compounds, properties, safety data, bioactivity, and cross-references.
  • io.github.cyanheads/protein-mcp-server — last commit 2026-07-30, v1.0.3
    MCP Server for 3D protein structural data retrieval & analysis from RCSB PDB, PDBe, and UniProt.
  • io.github.cyanheads/pentest-mcp-server — last commit 2026-07-30, v0.1.6
    Offline methodology engine for authorized penetration testing, CTF, and security research.
  • io.github.cyanheads/openlibrary-mcp-server — last commit 2026-07-30, v0.2.3
    Search books and authors, fetch editions, browse subjects, and resolve cover images.
  • io.github.cyanheads/openfoodfacts-mcp-server — last commit 2026-07-30, v0.3.1
    Barcode lookup, nutrition search, and product comparison for 3M+ crowd-sourced food products.
  • io.github.cyanheads/oecd-mcp-server — last commit 2026-07-30, v0.1.3
    Search and query 1,500+ OECD statistical datasets via SDMX. Keyless.
  • io.github.cyanheads/noaa-cdo-mcp-server — last commit 2026-07-30, v0.1.15
    Search NOAA CDO stations and datasets, fetch historical weather observations.
  • io.github.cyanheads/noaa-climate-mcp-server — last commit 2026-07-30, v0.2.0
    Search NOAA climate stations and datasets, fetch historical weather observations.
  • io.github.cyanheads/musicbrainz-mcp-server — last commit 2026-07-30, v0.1.5
    Search MusicBrainz artists, releases, works, labels; resolve ISRC/ISWC/barcode; fetch cover art.
  • io.github.cyanheads/libofcongress-mcp-server — last commit 2026-07-30, v0.2.16
    Search LOC digital collections, Chronicling America newspapers (full OCR), and LC Subject Headings.
  • io.github.cyanheads/internet-archive-mcp-server — last commit 2026-07-30, v0.1.3
    Search the Wayback Machine and IA library (40M+ items), fetch snapshots, item metadata, and text.
  • io.github.cyanheads/guardian-mcp-server — last commit 2026-07-30, v0.1.2
    Guardian Open Platform — search and retrieve full article text from The Guardian archive.
  • io.github.cyanheads/gnomad-genetics-mcp-server — last commit 2026-07-30, v0.1.5
    Look up allele frequencies by ancestry, gene constraint, variants, and coverage over gnomAD.
  • io.github.cyanheads/federal-regulations-mcp-server — last commit 2026-07-30, v0.1.2
    Search and trace US federal rules across the Federal Register, eCFR, and Regulations.gov.
  • io.github.cyanheads/eur-lex-mcp-server — last commit 2026-07-30, v0.9.8
    Search EU legislation, CJEU case law, and treaties; traverse CELLAR graph; browse EuroVoc concepts.
  • io.github.cyanheads/earthquake-mcp-server — last commit 2026-07-30, v0.3.1
    Search USGS and EMSC seismic data — real-time feeds, event queries, and earthquake counts.
  • io.github.cyanheads/cyanheads-mcp-server — last commit 2026-07-30, v0.4.0
    Fleet discovery for the cyanheads MCP ecosystem — semantic search + install snippets.
  • io.github.cyanheads/anime-mcp-server — last commit 2026-07-30, v0.1.3
    Search anime/manga, franchise watch order, schedule, characters, rankings, studio filmography.
  • io.github.cyanheads/paleobiology-mcp-server — last commit 2026-07-30, v0.3.4
    Search fossil occurrences, taxon ranges, diversity through deep time, and the geologic time scale.
  • refd — last commit 2026-07-30, v0.2.0
    Read AI search visibility, competitors, citations, prompts, and answer evidence from refd.
  • Email2Chat — last commit 2026-07-30, v0.1.1
    Connect Claude to your Gmail and Outlook inbox. Read, search, and manage emails via AI.
  • com.getagentictools/catalog — last commit 2026-07-30, v1.0.0
    Search 41,000+ agent skills, MCP servers, plugins & loops — real install counts and stars.
  • io.github.beepboop2025/pdf-suite-mcp — last commit 2026-07-30, v2.1.2
    37 tools to read, create, merge, split, watermark, fill, redact & search PDFs. Local, no API key.
  • io.github.beepboop2025/pdf-toolkit-mcp — last commit 2026-07-30, v2.1.1
    37 tools to read, create, merge, split, watermark, fill, redact & search PDFs. Local, no API key.
  • Stellar Agent Search — last commit 2026-07-30, v0.1.0
    Discover and rank Stellar 8004 agents with a read-only MCP server and fail-closed contract probes.
  • io.github.cyanheads/courtlistener-mcp-server — last commit 2026-07-30, v0.7.0
    Search US court opinions, federal dockets, judges, citations, and oral arguments via CourtListener.
  • io.github.abm-dev-git/abm-mcp — last commit 2026-07-30, v1.0.3
    abm.dev — the account-based marketing API for AI agents: Search, Enrich, and Create across B2B.
  • com.apple-rag/mcp-server — last commit 2026-07-30, v2.9.0
    Apple Developer Documentation with Semantic Search, RAG, and AI reranking for MCP clients
  • io.github.haiiibin/acb-tax-mcp — last commit 2026-07-30, v0.3.0
    Canadian ACB and capital gains: average-cost, per-disposition gains, superficial-loss detection.
  • Darwin RAG — last commit 2026-07-30, v0.2.13
    Local-first RAG engine with MCP server for AI agent integration.
  • OpenArx — last commit 2026-07-30, v0.3.2
    Open scientific and engineering knowledge for AI agents: search, evidence, document publishing.
  • Instagram Profile MCP Server — last commit 2026-07-29, v0.0.24
    Instagram profiles for AI agents — followers, similar accounts, keyword and location search.
  • Zillow MCP Server — last commit 2026-07-29, v0.0.27
    Zillow homes and agent contacts for AI agents — search by ZIP, by URL, or look up a zpid.
  • io.github.doteyeso-ops/mcp-server-vibes-coded — last commit 2026-07-29, v1.0.5
    Curated Vibes-Coded x402 MCP tools: search, scrape, JSON repair, reliability guards, pay.
  • Web Search — last commit 2026-07-29, v0.2.6
    Keyless multi-engine web search, fetch, and clean-Markdown read for AI agents. No API keys.
  • io.github.federicodeponte/openpaper-mcp — last commit 2026-07-29, v0.1.3
    Autonomous research engine: auto research from a prompt to a fully-cited academic paper via MCP
  • io.github.cardmagic/messages — last commit 2026-07-29, v1.2.0
    Fuzzy search and browse Apple Messages/iMessage from CLI or MCP server
  • MaxStat MCP — last commit 2026-07-29, v1.2.3
    Search 408K+ MAX channels and 86M+ posts; metrics, reactions, forwards, webhooks and usage.
  • io.github.Dusheh/myclaw-toolkit — last commit 2026-07-29, v1.0.11
    23-in-1 developer utility toolkit — search, exchange rates, crypto, QR codes, and more
  • Loa Healthcare Pricing — last commit 2026-07-29, v1.0.1
    Search source-labeled hospital prices, CPT codes, providers, and healthcare cost estimates.
  • CN Scraper MCP — last commit 2026-07-29, v0.4.1
    MCP server for AI agents to search major Chinese internet platforms with local-first login support.
  • Adextract MCP — last commit 2026-07-29, v1.0.0
    Search Meta, Google Ads, LinkedIn, and TikTok ad libraries plus creative analysis via MCP.
  • Walmart Connect Advertising APIs — last commit 2026-07-29, v0.1.1a5
    MCP server for Walmart Connect Ads APIs (Sponsored Search + Display)
  • io.github.blazickjp/arxiv-mcp-server — last commit 2026-07-29, v0.6.2
    Search arXiv papers, download full text, semantic search, citation graphs, and alerts via MCP.
  • io.github.ArturLys/ao3-mcp — last commit 2026-07-28, v0.1.2
    Search AO3 and have fics read by a secondary model before they're recommended
  • RemembrallMCP — last commit 2026-07-28, v0.1.0
    Persistent knowledge memory for AI agents. Hybrid search, code graph, pgvector.
  • io.github.certindex/certindex-mcp — last commit 2026-07-28, v0.2.0
    Certificate Transparency search for AI agents: certs, subdomains, issuance history, expiry.
  • Streamline MCP Server — last commit 2026-07-28, v2.0.0
    Search and download icons, illustrations, elements and emojis in PNG or SVG formats.
  • io.github.cyanheads/hn-mcp-server — last commit 2026-07-28, v0.5.13
    Browse Hacker News feeds, threads, and user profiles with full-text search.
  • com.altmetric.mcp/altmetric-mcp — last commit 2026-07-28, v1.1.1
    MCP server for Altmetric APIs - track research attention across news, policy, social media, and more
  • io.github.altmetric/altmetric-mcp — last commit 2026-07-28, v0.8.1
    MCP server for Altmetric APIs - track research attention across news, policy, social media, and more
  • Clawifi — last commit 2026-07-28, v0.1.0
    Agent-native internet gateway: typed search, fetch, scrape, crawl, and extract via the Clawifi API.
  • AiAkiv Memory — last commit 2026-07-28, v1.0.0
    Shared long-term memory for AI agents: save and recall context as a searchable knowledge graph.

Page 6 of 51

How this page is ordered

Entries are grouped by whether anyone is still working on them, using the date of the most recent push to the repository. They are not ordered by stars, because a star is a bookmark somebody left once and never took back.

Where we have not checked an entry yet, it says so rather than being mixed in with the verified ones.