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.

  • Hacé Cuentas — Free Calculators — last commit 2026-08-08, v1.0.0
    Free calculators as MCP tools: finance, taxes, health, units, dates. Search, fetch & compute.
  • Unsplash MCP Server — last commit 2026-08-08, v1.0.1
    MCP server for the Unsplash API: search & fetch photos with attribution + download tracking.
  • io.github.Embassy-of-the-Free-Mind/source-library — last commit 2026-08-08, v4.3.0
    Search 22,000+ rare pre-modern texts with AI English translations, summaries, and 73K+ images.
  • Source Library — last commit 2026-08-08, v4.3.4
    Search 15K rare pre-modern texts translated to English: philosophy, religion, science, literature.
  • io.github.flytohub/flyto-indexer — last commit 2026-08-08, v2.10.2
    Code intelligence MCP server — impact analysis, semantic search, dependency graphs
  • io.github.getmcpm/cli — last commit 2026-08-08, v0.1.3
    MCP package manager with trust scoring. Search, install, and audit MCP servers.
  • Obsidian Hybrid Search — last commit 2026-08-08, v0.13.25
    Search Obsidian vaults with hybrid full-text, fuzzy, semantic, and graph retrieval.
  • Firecrawl MCP Server — last commit 2026-08-08, v3.23.4
    MCP server for Firecrawl — search, scrape, and interact with the web.
  • Everyrow MCP Server — last commit 2026-08-07, v0.5.1
    Give your AI a research team. Forecast, score, classify, or research every row of a dataset.
  • FutureSearch MCP Server — last commit 2026-08-07, v0.24.0
    AI forecasting for your AI: probabilities, dates, and numbers with a public track record.
  • Groundhog — last commit 2026-08-07, v0.10.1
    Search, read and research the web, with hidden text stripped by default and sources hashed
  • io.github.dcostenco/prism-coder — last commit 2026-08-07, v20.7.1
    Session memory, knowledge search, Brave Search, Gemini AI, and code transforms for AI agents
  • io.github.dcostenco/prism-mcp — last commit 2026-08-07, v1.5.0
    Session memory, knowledge search, Brave Search, Gemini AI, and code transforms for AI agents
  • Tripitaka MCP — last commit 2026-08-07, v1.3.0
    MCP server for the full Pāli Canon — search, cite, compare translations. Offered as Dhamma Dāna.
  • io.github.dnotitia/akb — last commit 2026-08-07, v2.0.4
    Git-backed org memory for AI agents — hybrid search, tables, files & a URI graph over MCP.
  • io.github.ggozad/haiku-rag — last commit 2026-08-07, v0.73.0
    Opinionated agentic RAG powered by LanceDB, Pydantic AI, and Docling
  • Engram — last commit 2026-08-07, v1.1.0
    Persistent memory for AI agents — verbatim conversations, searchable by meaning.
  • Elnora MCP Server — last commit 2026-08-07, v0.1.1
    AI-powered bioprotocol optimization — generate, search, and manage lab protocols via MCP
  • io.github.gowtham0992/link — last commit 2026-08-07, v2.2.1
    Local personal memory for agents as MCP tools — remember, recall, search, context, graph traversal.
  • io.github.GetMystAdmin/urdb-mcp — last commit 2026-08-07, v1.0.2
    Search URDB for product integrity scores, enshittification events, and change tracking.
  • ellmos FileCommander — last commit 2026-08-07, v1.9.3
    Filesystem MCP server: files, processes, sessions, async search, OCR, archives, safe delete.
  • DealMachine — last commit 2026-08-06, v0.3.0
    Search and enrich US property, owner, people, and company data for sales and lead generation.
  • io.github.GCTRL-TECH/gctrl — last commit 2026-08-06, v1.0.1
    Governed graph-native agent memory: knowledge extraction, fusion, hybrid RAG, scoped access tokens.
  • rag-rat — last commit 2026-08-06, v0.22.0
    Repository intelligence, code graph, history, papertrail, and cross-agent memory for coding agents.
  • io.github.cyanheads/gbif-biodiversity-mcp-server — last commit 2026-08-06, v0.5.4
    Search GBIF species taxonomy, occurrence records, datasets, and publishers.
  • io.github.cyanheads/gbif-mcp-server — last commit 2026-08-06, v0.1.7
    Search GBIF species taxonomy, occurrence records, datasets, and publishers.
  • Twitter Scraper API — last commit 2026-08-06, v1.1.0
    Scrape Twitter/X profiles, tweets, search. No API key. Structured JSON. x402 pay-per-call.
  • io.github.butterbase-ai/mcp — last commit 2026-08-06, v1.0.0
    Butterbase MCP server — manage your backend: schemas, auth, functions, storage, RAG, deploys.
  • io.github.Alessandro114/scala-score — last commit 2026-08-06, v0.1.3
    MCP server for S.C.A.L.A. Score API — let Claude, ChatGPT, and AI agents search 250M+ companies
  • Citadel — last commit 2026-08-06, v1.13.0
    Encrypted-first embedded database with vector search and agent memory, exposed as MCP tools
  • com.redpanda/docs-mcp — last commit 2026-08-06, v2026.803.133
    Get authoritative answers about Redpanda documentation and search API references.
  • Vault Cortex — last commit 2026-08-06, v0.35.0
    Standalone MCP server for Obsidian vaults — hybrid search, notes & files, memory, tasks, OAuth 2.1
  • ArcadeDB MCP Server — last commit 2026-08-06, v26.4.1-SNAPSHOT
    Built-in MCP server for ArcadeDB multi-model database (graph, document, vector, time-series)
  • VelesDB Memory — last commit 2026-08-06, v0.11.6
    Offline agentic memory: remember/recall/relate/forget/why over a fused vector+graph+columnar engine
  • StitchAPI Docs — last commit 2026-08-06, v1.1.0
    Search and read the StitchAPI docs: search_docs finds relevant sections, get_doc reads a page.
  • com.dimhour/catalog — last commit 2026-08-06, v2.2.0
    Search 18,723 verified restaurants and bars across 20 cities, each with a 0-100 quality score.
  • io.github.assafbar2/agentswitchboard — last commit 2026-08-06, v1.0.0
    Search a curated directory of 300+ verified AI agents, MCP servers, and agentic tools.
  • io.github.cdeust/hypermnesia-mcp — last commit 2026-08-06, v4.17.1
    Persistent memory for Claude — 36 cited neuroscience mechanisms, local-first, hybrid retrieval.
  • Drafto — last commit 2026-08-06, v1.1.0
    Create, read, search, and organize your Drafto notes and notebooks.
  • Geocoding — last commit 2026-08-06, v1.0.2
    Forward and reverse geocoding, place search, and distance via OpenStreetMap Nominatim. No key.
  • SEC EDGAR — last commit 2026-08-06, v1.0.2
    SEC EDGAR filings (10-K, 10-Q, 8-K), XBRL financials, and full-text filing search. No API key.
  • BuyWhere Product Catalog — last commit 2026-08-06, v1.0.0
    Search 1.5M+ products across 20+ platforms. Compare prices, find deals, browse categories.
  • com.mangofolio/investbrain — last commit 2026-08-06, v0.1.0
    Investment discipline MCP server with RAG, behavior detection, journaling, and market data.
  • io.github.csitte/mailwarden — last commit 2026-08-06, v0.5.0
    Native Gmail MCP server: search, labels, archive, trash, attachments, and snooze.
  • io.github.AkaciaNL/basicdeploy-mcp — last commit 2026-08-06, v1.0.6
    The runtime your agent deploys to — DB, storage, and a public URL in one MCP call.
  • io.github.gvasile29/qai-consultant-mcp — last commit 2026-08-06, v3.3.1
    Keyless local MCP server for QA: standards retrieval, effort estimation, doc review, test analysis.
  • CodeNib — last commit 2026-08-06, v0.2.0
    Ranked codebase search and static symbol navigation for coding agents.
  • io.github.bekirdag/docdex — last commit 2026-08-06, v0.2.95
    Fast per-repo documentation indexer and full-text search MCP server for codebases.
  • l0g.fr Risk Intelligence — last commit 2026-08-06, v1.24.3
    Read-only macro risk analysis, evidence, signals, and source-backed research from l0g.fr.
  • CPersona — last commit 2026-08-06, v2.5.3
    Persistent AI memory in one SQLite file: 3-layer hybrid search, confidence scoring, 29 tools.
  • com.neuronsearchlab/mcp — last commit 2026-08-06, v0.6.2
    Recommendations, search, catalogue, analytics, and platform admin tools for NeuronSearchLab
  • GitHits — last commit 2026-08-06, v0.7.0
    Search public open-source code, documentation, metadata, vulnerabilities, changelogs, and examples.
  • AIRAS — last commit 2026-08-06, v0.3.1
    Automated AI research toolkit: hypothesis generation, experiments, and paper writing
  • com.dmzagent/skill-builder-mcp — last commit 2026-08-06, v1.0.1
    Search the skill-builder registry and auto-install skills for Claude Code, Cursor, and Codex.
  • Search Ads 360 MCP Server — last commit 2026-08-06, v1.1.0
    Search Ads 360 — reporting via query language, insights, and offline conversion upload
  • io.github.davidmosiah/uap-pulse — last commit 2026-08-06, v0.4.0
    Search and map the Pentagon UAP/UFO releases plus curated official archives from 12 nations.
  • io.github.davidmosiah/delx-memory — last commit 2026-08-06, v0.2.3
    Local-first persistent memory MCP: shared SQLite key/value store, searchable, TTL-aware, secret-safe
  • AMZScout Skill + MCP — last commit 2026-08-06, v1.0.0
    Amazon research from AMZScout data: analyze products & niches, keywords/PPC, and brand catalogs.
  • EnConvert — last commit 2026-08-06, v0.5.0
    Unified web ingestion for AI agents: perceive, discover, search, extract, ingest, watch, convert.
  • Hotel & Vacation Rental MCP - live prices & reviews across Booking, Airbnb, Vrbo & Google Hotels — last commit 2026-08-06, v1.0.0
    Search hotels & rentals: live prices & reviews across Booking.com, Airbnb, Vrbo & Google Hotels.

Page 1 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.