Matryoshka MCP Server
by yogthosMCP server for token-efficient large document analysis via the use of REPL state
Matryoshka is an open-source mcp server by yogthos, written mainly in TypeScript, with 149 GitHub stars and the Apache-2.0 license. Its code was last updated May 17, 2026. The latest npm release is matryoshka-rlm 0.2.40, published May 17, 2026, with 105 downloads last week.
Scan summary: scanned Nov 5, 2026 at commit ccf3ca0. Seen able to run dynamic code. Scan policy
What Matryoshka can touch
- Our checks did not find this. The tool may still do it.Run shell commandsNot seen in this scan
- Seen in this scan, either in the code or while it ran.Run dynamic codeFound in the code by our scan
- Our checks did not find this. The tool may still do it.Read or write filesNot seen in this scan
- Our checks did not find this. The tool may still do it.Read environment and secretsNot seen in this scan
- Our checks did not find this. The tool may still do it.Control a web browserNot seen in this scan
- Our checks did not find this. The tool may still do it.Connect to databasesNot seen in this scan
- Our checks did not find this. The tool may still do it.Read or send messagesNot seen in this scan
- Our checks did not find this. The tool may still do it.Touch money or tradingNot seen in this scan
- Our checks did not find this. The tool may still do it.Connect to the internetNot run in this scan
"Not seen" means our checks did not find it, and the tool may still do it. Covers commit ccf3ca0, Nov 5, 2026. See the scan policy.
Before you install Matryoshka
AgenticMart scanned Matryoshka on Nov 5, 2026 with automated checks for hidden code, known-malicious packages, leaked secrets and vulnerable dependencies. The result covers one commit under our scan policy, so review what access you give it and check any advisories shown here.
What it can access
- An MCP server is a program your AI app starts and talks to. A local one runs with your user's permissions: it can see the files, environment variables and network your account can.
Before you install
- Pin the version you reviewed instead of always installing the latest release.
- Read the tool list or scripts before the first run, and keep approval prompts on for actions that write, send or delete.
- Maintained by yogthos on GitHub, 149 stars and 19 forks. Popularity is not proof of safety.
- Last code change: May 17, 2026.
- Open-source license: Apache-2.0.
Matryoshka is an open-source mcp server by yogthos, written mainly in TypeScript. MCP server for token-efficient large document analysis via the use of REPL state
At a glance
- Stars
- 149
- Forks
- 19
- Language
- TypeScript
- License
- Apache-2.0
- Created
- Jan 2026
- Last update
- May 17, 2026
- Type
- MCP Server
- Price
- Free
Topics
Questions about Matryoshka
What is Matryoshka?
MCP server for token-efficient large document analysis via the use of REPL state
Who maintains Matryoshka?
Matryoshka is maintained by yogthos on GitHub (yogthos/Matryoshka). AgenticMart lists it from public repository data.
Is Matryoshka safe to use?
AgenticMart scanned Matryoshka on Nov 5, 2026 with automated checks for hidden code, known-malicious packages, leaked secrets and vulnerable dependencies. The result covers one commit under our scan policy, so review what access you give it and check any advisories shown here.
What license does Matryoshka use?
It is published under the Apache-2.0 license.
Matryoshka alternatives
View more →Similar mcp servers in Research & Analysis, ranked by GitHub stars. Compare licence, recent activity and scan status before you choose.
| Name | Stars | Licence | Last updated | Scan |
|---|---|---|---|---|
| Matryoshka (this page) yogthos | 149 | Apache-2.0 | May 17, 2026 | Scanned, no flagged issues |
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