Memory & Knowledge MCP Servers for Perplexity

InfraNodus MCP server - A Model Context Protocol server for network thinking and graph analysis

Search your AI chat history from Claude, Cursor, Codex, and other MCP clients.

Governed local memory for AI agents: facts are retired, not overwritten, and every call is audited.

Cross-client AI memory hub: agents share one SQLite memory.db via file-level pointers.

One searchable history across every AI coding tool, with secret scanning and a shared task board.

Agent memory MCP server with 4-type cognitive memory, hybrid search, and TTL-based forgetting.

Recognition-first cross-agent memory federation. One shared memory across all your agents.

Graph memory that dreams: Neo4j knowledge-graph memory for AI agents with hybrid search

Self-hosted memory for LLMs in TriliumNext, structured by the server and editable by you.

An MCP server that provides persistent multimodal context storage for LLM agents.

MCP server that gives coding agents persistent project understanding via a knowledge graph

Local hybrid-search memory for AI agents over plain Markdown. Multi-tenant, offline, no LLM.

Universal memory system for AI agents - CLI + MCP server + library API

Local persistent memory and Markdown wiki for AI coding agents: 24 MCP tools, no gateway required.

Persistent project context for Claude. IANA-registered .faf format.

Licensed, rights-cleared content for AI agents — verifiable license keys, on-chain proof, and EU AI Act attestation. The MCP alternative to

Shared records for AI agents: engineering decisions, bug history, rules, and work state through MCP.

Seven-layer agent memory: episodic, semantic, procedural and core. Local SQLite, no account.

LanceDB long-term memory MCP server with SiliconFlow/OpenAI-compatible embeddings.

MCP server for reading Simplenote notes across macOS, Linux, and Windows

Intelligent agent memory with automatic extraction, consolidation, and bi-temporal recall.