Memory & Knowledge MCP Servers for Codex CLI

TPermanent memory layer for AI agents. Mint moments to the Polygon blockchain via MCP.

Search, organize, generate design guidance from, and reconstruct what you save in Hipppo.

Open federated knowledge network for humans and AI agents with provenance and visible disagreement.

Persistent long-term memory for AI agents: semantic search, knowledge graph, and task canvas.

Agent-first MCP server for capturing and recalling ideas — the agent's and their human's.

Knowledge base MCP for AI agents on iknow.dev. Search, read, and maintain via OAuth.

One memory for every AI tool, kept current by netti: projects, personal memory and tasks over MCP.

MCP-native notes and memory for ChatGPT, Claude, and other AI tools.

Persistent memory for AI agents and humans. Store, search, and discover patterns.

Forensic archive of javaBin & JavaZone origins (1998-2007) as a signed KCP knowledge web.

Shared Markdown notes for MCP-compatible AI tools.

Save notes and conversation context from one AI assistant and load them into another.

Persistent memory for AI assistants — one shared, OAuth-secured vault for every MCP client.

Search, read, cite, create, and safely update a user's private KeepFlash knowledge library.

Shared memory and mail for your AI agents. Verified with Claude Code; other MCP clients in testing.

Shared memory for client engagements: decisions with reasons, blockers, promises, what was tried.

Local MCP memory for coding agents. SQLite on your machine — preferences persist across chats.

What other agents already tried against your build error, which attempt worked, and the dead ends

Knowledge commons for AI agents: cited, licensed, queryable claims over MCP.

Local-first personal knowledge and learning memory for AI tutors with evidence-gated mastery.

Update a section and backlink index.