OpenMemory MCP Server

OpenMemory MCP server from Mem0 providing a self-hosted, privacy-preserving persistent memory system for AI agents — storing and retrieving agent memories locally using Mem0's memory framework, enabling agents to maintain context across sessions without sending personal data to external services.

Evaluated Mar 06, 2026 (0d ago) vcurrent
Homepage ↗ Repo ↗ AI & Machine Learning memory agent-memory mem0 mcp-server vector-store persistent-memory official
⚙ Agent Friendliness
78
/ 100
Can an agent use this?
🔒 Security
81
/ 100
Is it safe for agents?
⚡ Reliability
70
/ 100
Does it work consistently?

Score Breakdown

⚙ Agent Friendliness

MCP Quality
72
Documentation
75
Error Messages
70
Auth Simplicity
92
Rate Limits
90

🔒 Security

TLS Enforcement
88
Auth Strength
80
Scope Granularity
72
Dep. Hygiene
75
Secret Handling
88

Local storage. Optional external embedding. From mem0ai. Data sovereignty maintained.

⚡ Reliability

Uptime/SLA
72
Version Stability
68
Breaking Changes
68
Error Recovery
70
AF Security Reliability

Best When

An agent needs persistent memory but data privacy prevents using cloud services — OpenMemory stores everything locally while using Mem0's smart memory algorithms.

Avoid When

You're fine with cloud-based memory services — Mem0 cloud offers more scalability and managed infrastructure.

Use Cases

  • Persistent agent memory across sessions without external API from privacy-first agents
  • Local memory storage for personal assistant agents handling sensitive information
  • Self-hosted alternative to Mem0 cloud memory from enterprise agents
  • Building agents that remember user preferences and history from personalization agents
  • Cross-session context preservation from long-running project agents
  • GDPR-compliant agent memory from European enterprise agents

Not For

  • Teams needing managed cloud memory (use Mem0 cloud instead)
  • High-throughput memory operations (local storage has I/O limits)
  • Teams without local compute for memory operations

Interface

REST API
No
GraphQL
No
gRPC
No
MCP Server
Yes
SDK
Yes
Webhooks
No

Authentication

Methods: none
OAuth: No Scopes: No

No external authentication — runs fully locally. Embedding model API key may be needed if using external embeddings (OpenAI). Local vector store.

Pricing

Model: free
Free tier: Yes
Requires CC: No

From Mem0 (mem0ai org) — official self-hosted version of their memory system. Free and open source.

Agent Metadata

Pagination
none
Idempotent
Partial
Retry Guidance
Not documented

Known Gotchas

  • Embedding model required for semantic memory — may need OpenAI API key
  • Memory deduplication and consolidation may lose nuance
  • From mem0ai org — well-maintained with active development
  • Local vector store performance degrades with very large memory collections
  • Memory relevance scoring may miss context in complex queries
  • First-time setup requires configuring embedding model and storage backend

Alternatives

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Scores are editorial opinions as of 2026-03-06.

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