MCP Catalog
Browse 172 Model Context Protocol servers · Knowledge & Memory · Apache License 2.0Clear
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MCP-native Trust Infrastructure for AI Agents. Persistent encrypted memory with Trust Quotient.
Zero-Knowledge Context™ & Neural Handover™ for AI Agents. The Trust Layer for AI Memory.
Long-term and multimodal memory for AI agents - character-aware, mem0-compatible, fully-local option
Vault-native, accountable memory for Claude Code and MCP clients. Markdown is ground truth.
Content-addressed, ed25519-signed memory of every place on Earth. Apache-2.0, no keys for reads.
Knowledge graph & long-term memory for AI agents: recall, relations, store, stats, health.
Local-first AI PKM memory for coding conversations.
Save AI-agent handoff checkpoints, WorkStash notes, and WorkThreads in a local A2CR workspace.
Persistent memory infrastructure for AI agents. Identity, knowledge graph, and search.
Local symbol ground truth MCP server for Unicode lookup and code-symbol linting.
Persistent memory for any AI — zero token cost until recall
Persistent episodic memory for AI coding: capture, retrieve, brief, dream cycle, cross-project.
Filesystem-first MCP for Obsidian — an LLM-maintained wiki inspired by Karpathy's LLM Wiki.
The Tenth Man Protocol — structured contrarian analysis for decision-makers via MCP
Deterministic decision engine with receipts. Define rules in YAML, query a graph, get proof.
Offline observational astronomy: positions, rise/set, moon phases, eclipses, and seasons.
Fleet discovery for the cyanheads MCP ecosystem — semantic search + install snippets.
Search EU legislation, CJEU case law, and treaties; traverse CELLAR graph; browse EuroVoc concepts.
Search and trace US federal rules across the Federal Register, eCFR, and Regulations.gov.
Search GBIF species taxonomy, occurrence records, datasets, and publishers.
MCP server for Project Gutenberg — 75,000+ public-domain ebooks with full plain-text retrieval.
Search the Wayback Machine and IA library (40M+ items), fetch snapshots, item metadata, and text.
Search LOC digital collections, Chronicling America newspapers (full OCR), and LC Subject Headings.
MET Museum collection via MCP — 500K+ artworks, metadata, provenance, open-access images.