com.letta/memory-mcp
memory-mcp
MCP server for AI memory management using Letta - Standard MCP format
alive probed 2026-10-14
5tools
800tokens in Claude Opus 5.5
855tokens in Claude Code
0.4 %of a 200k context window
462o200k_base estimate
1.2 sto initialize
10 msto list tools
- Run it
- npx -y @letta-ai/memory-mcp@2.0.2 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- memory-mcp 1.0.0
- Capabilities
- tools
- Instructions
- none
- Claude count
- Claude Opus 5.5, measured 2026-10-14. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/letta-ai/memory-mcp
- Registry
- active, updated 2025-09-09 · registry entry
- Reachable
- 1 of the last 1 probe
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| add_vector_memory | 110 | 24 % |
| memory_replace | 98 | 21 % |
| search_vector_memory | 93 | 20 % |
| memory_append | 82 | 18 % |
| get_memory | 79 | 17 % |
Badge and feed
[](https://mcpcost.ulehla.dev/s/com.letta/memory-mcp)
An entry for every probe that changed the result, the tool count or the token cost: Atom feed. Add it to a feed reader or a Slack RSS app to hear when the server stops answering or its tool set grows.