MemGPT MCP Server

MCP server bridging AI agents with MemGPT/Letta — the persistent memory management system for AI. Enables agents to store, retrieve, and manage long-term memory across conversations using Letta's memory architecture. Allows AI workflows to maintain state and context beyond single conversations.

Evaluated Mar 06, 2026 (0d ago) vcurrent

Homepage ↗ Repo ↗ AI & Machine Learning memgpt letta memory ai-agents persistent-memory mcp-server

⚙ Agent Friendliness

/ 100

Can an agent use this?

🔒 Security

/ 100

Is it safe for agents?

⚡ Reliability

/ 100

Does it work consistently?

Score Breakdown

⚙ Agent Friendliness

MCP Quality

Documentation

Error Messages

Auth Simplicity

Rate Limits

🔒 Security

TLS Enforcement

Auth Strength

Scope Granularity

Dep. Hygiene

Secret Handling

Sensitive memory data. API key auth. Self-hosted option keeps data local.

⚡ Reliability

Uptime/SLA

Version Stability

Breaking Changes

Error Recovery

Best When

A developer building long-running AI agents wants to give them persistent memory via Letta/MemGPT so agents can recall past interactions and accumulate knowledge over time.

Avoid When

You don't run a Letta server locally or in the cloud. Also: MemGPT/Letta is evolving rapidly — API changes are common.

Use Cases

• Giving AI agents persistent memory across conversation sessions via Letta
• Storing and retrieving agent knowledge and context from MemGPT memory stores
• Building long-running AI agents that remember past interactions and facts
• Integrating Letta's structured memory (core, archival, recall) into agent workflows

Not For

• Teams not using MemGPT/Letta for memory management
• Simple single-session AI workflows that don't need persistence
• Production memory systems without proper Letta server setup

Interface

REST API

Yes

GraphQL

gRPC

MCP Server

Yes ↗

SDK

Yes

Webhooks

Authentication

Methods: api_key

OAuth: No Scopes: No

Letta server API key required. Requires running Letta server locally or via Letta Cloud.

Pricing

Model: freemium

Free tier: Yes

Requires CC: No

MemGPT/Letta is open source. Community MCP server is free. Self-hosting requires compute resources.

Agent Metadata

Pagination

cursor

Idempotent

Partial

Retry Guidance

Not documented

Known Gotchas

⚠ MemGPT rebranded to Letta — ensure you're using compatible API version
⚠ Requires running Letta server — not plug-and-play without infrastructure setup
⚠ Letta API is evolving rapidly — check compatibility with server version
⚠ Community implementation (Vic563) — not official Letta org server

Alternatives

tiger-memory-mcp-server mcp-memory-service basic-memory-mcp

Full Evaluation Report

Detailed scoring breakdown, competitive positioning, security analysis, and improvement recommendations for MemGPT MCP Server.

$99

API endpoint ↗ Agent guide ↗ Report inaccuracy

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