Agent memory MCP servers

Which agent memory MCP servers actually answer?

Of 1,030 servers in the official MCP registry that mention Agent memory, we checked 342 remote endpoints on 2026-10-04: 93 answered the MCP handshake, 198 answered but asked for sign-in or payment first, and 51 did not complete it. 657 run on your own machine and cannot be checked from outside.

What this does not tell you: whether a server is safe, or whether its tools do what they say. An answer to the handshake proves the endpoint is up, nothing more.

Ranked by our checks and repository activity, not by votes. How we check.

Nautilus Compass Memory
io.github.chunxiaoxx/nautilus-compass
Local-first long-term memory for AI agents, with byte-recomputable signed verification receipts.
Answers, but requires sign-in before the handshake★ 877
Synap Memory
ai.maximem/synap
Persistent memory for AI agents — log and recall conversation context over MCP.
Answers the MCP handshake and lists its tools★ 76
emem, the verifiable memory protocol for the physical world
io.github.Vortx-AI/emem
Shared memory for AI agents. One address per fact, one signature you check. No key to read.
Answers the MCP handshake and lists its tools★ 64
tradememory-protocol
io.github.mnemox-ai/tradememory-protocol
Tamper-evident decision audit trail and outcome-weighted memory for AI trading agents.
runs locally★ 1,423
mcp-neo4j-memory
io.github.neo4j-contrib/mcp-neo4j-memory
MCP Neo4j Knowledge Graph Memory Server
runs locally★ 986
Cairn.ink Memory
ink.cairn/memory
Cross-session memory for AI agents with a Source Receipt for every memory, over MCP.
Answers, but requires sign-in before the handshake★ 20
ori-memory
io.github.aayoawoyemi/ori-memory
Persistent memory infrastructure for AI agents. Identity, knowledge graph, and search.
runs locally★ 328
shodh-memory
io.github.varun29ankuS/shodh-memory
Cognitive memory for AI agents — semantic search, Hebbian learning, knowledge graphs.
runs locally★ 300
Kagura Memory Cloud
io.github.kagura-ai/memory-cloud
Persistent memory for AI assistants: store, search, and connect knowledge across conversations.
Answers, but requires sign-in before the handshake★ 12
YourMemory
io.github.sachitrafa/yourmemory
Persistent memory for AI agents. Memories decay with time and strengthen on recall.
runs locally★ 268
cognitive-ai-memory
io.github.sachitrafa/cognitive-ai-memory
Ebbinghaus-based persistent memory for Claude. Memories decay with time, strengthen on recall.
runs locally★ 268
neural-memory
io.github.nhadaututtheky/neural-memory
Persistent memory for AI agents — 55 MCP tools, spreading activation recall.
runs locally★ 240
Engram: AI memory you can edit in Obsidian
io.github.engram-app/engram
Shared memory for Claude, ChatGPT and any MCP client. Read and edit it in Obsidian or the web app.
Answers, but requires sign-in before the handshake★ 10
Cathedral — Persistent Memory for AI Agents
io.github.AILIFE1/cathedral-mcp
Persistent memory and drift detection for AI agents across session restarts.
Answers, but requires sign-in before the handshake★ 10
superlocalmemory
io.github.varun369/superlocalmemory
Local-first AI memory with knowledge graphs and hybrid search. 17+ AI tools via MCP. Free.
runs locally★ 227
PyMemoryEditor
io.github.JeanExtreme002/PyMemoryEditor
Read, write and scan process memory, Cheat Engine style, on Windows, Linux and macOS.
runs locally★ 221
OMEGA Memory
io.github.omega-memory/omega-memory
Persistent memory, coordination, and learning for AI agents. Local-first, 25 MCP tools.
runs locally★ 219
core
io.github.omega-memory/core
Persistent memory for AI coding agents. #1 on LongMemEval. Local-first.
runs locally★ 219
GoAI Moat Brand Intel Memory
com.goaimoat/brand-intel-memory
Persistent business-intelligence memory for AI agents.
Answers the MCP handshake and lists its tools★ 1
netcafe-memory
com.ainetcafe/netcafe-memory
Cross-session, cross-device memory for your agent: remember and recall notes. No key to start.
Answers the MCP handshake; tool list not available without sign-in★ 1
Penfield Memory
io.github.penfieldlabs/penfield-mcp
Persistent memory and knowledge graphs for AI agents. Hybrid search, context checkpoints, and more.
Answers, but requires sign-in before the handshake★ 6
Mneme Memory
io.github.modusensus/mneme-memory
Cross-session memory for AI coding agents via six tools; local-first SQLite store.
runs locally★ 138
agtrepo-memory
io.github.agtrepo/agtrepo-memory
Encrypted, pay-per-use persistent memory storage for AI agents, gated by x402 payments on Base.
Answers the MCP handshake and lists its tools
WhiteMagic — governed local memory for agent continuity
io.github.lbailey94/whitemagic-mcp
Governed local-first memory and continuity for AI agents — signed receipts, optional hosted lane.
Answers the MCP handshake and lists its tools
basic-memory
io.github.basicmachines-co/basic-memory
Local-first knowledge management with bi-directional LLM sync via Markdown files.
runs locally★ 4,083
agent-memory
dev.veritap/agent-memory
Agent memory: free durable storage (any keypair, no signup) that survives sessions and machines.
Answers the MCP handshake and lists its tools
Calera FINSEC — Certified SEC Memory
io.github.CaseyYahbara/finsec
Certified SEC EDGAR fact memory for AI agents with zero hallucination and filing provenance.
Answers the MCP handshake and lists its tools
MemorySync Documentation
io.memorysync/docs
Search and read the current MemorySync documentation while writing integration code.
Answers the MCP handshake and lists its tools
MemoryRouter
ai.memoryrouter/memoryrouter
Persistent AI memory shared across Claude, ChatGPT, coding agents, and compatible MCP clients.
Answers the MCP handshake and lists its tools
SNHP — free negotiation math + agent memory
io.github.ryuxik/snhp
Free game-theory negotiation advisor for agents, plus paid receipted sessions and agent memory.
Answers the MCP handshake and lists its tools

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