Filesystem vs LLM Sandbox
A side-by-side look at the Filesystem and LLM Sandbox MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
Verdict: choose Filesystem for file systems work as a local process; choose LLM Sandbox for code execution as a local process. You can also run both side by side in one mcpServers block.
Which MCP server should you choose?
Choose Filesystem when
- You need dedicated capabilities in the File Systems domain.
- You prefer a local stdio subprocess transport.
- Its auth model fits you: No auth required.
- You want tools like
path, head, tail.
Choose LLM Sandbox when
- You need dedicated capabilities in the Code Execution domain.
- You prefer a local stdio subprocess transport.
- You want tools like
execute_code, get_supported_languages, get_language_details.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | ||
|---|---|---|
| Category | File Systems | Code Execution |
| Quality signal | 85/100 · Excellent | 60/100 · Good |
| Install command | Confirmed | Confirmed |
| Transport | Local subprocess (stdio) | Local subprocess (stdio) |
| Auth | No auth required | Not declared |
| Pricing | Free | Not declared |
| Required env vars | None listed | None listed |
| Verified owner | Verified | Community listing |
| GitHub stars | 91,512 | 1,136 |
| Directory activity | 11 views 0 installs 0 upvotes | 4 views 0 installs 0 upvotes |
| Tools | 17 | 3 |
| Full listing | View Filesystem | View LLM Sandbox |
Tools & capabilities
Filesystem tools 17
pathheadtailpathscontenteditsoldTextnewTextdryRunsortBysourcedestination- +5 more on the listing page
LLM Sandbox tools 3
execute_codeget_supported_languagesget_language_details
Ready-to-paste client configs
Paste either block (or both) into your client config, e.g. claude_desktop_config.json or ~/.cursor/mcp.json. We only show a config when the install command is confirmed.
Filesystem
{
"mcpServers": {
"filesystem": {
"command": "npx",
"args": [
"-y",
"@modelcontextprotocol/server-filesystem"
]
}
}
}
LLM Sandbox
{
"mcpServers": {
"llm-sandbox": {
"command": "uvx",
"args": [
"llm-sandbox"
]
}
}
}
Frequently asked questions
Filesystem is categorized under File Systems and uses a local stdio subprocess. LLM Sandbox belongs to Code Execution and uses a local stdio subprocess. Pick Filesystem for file systems work and LLM Sandbox for code execution.
Copy the mcpServers block from the config section on this page into your client's config (for example claude_desktop_config.json or ~/.cursor/mcp.json), then fully restart the client.
Filesystem is listed as free. Auth: no auth required. LLM Sandbox has no declared pricing — check the project's own site. If a server needs environment variables such as API keys, define them under the env key in your client's MCP config.
Yes. MCP clients support multiple servers: add filesystem and llm-sandbox as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, Filesystem has a quality signal of 85/100 (Excellent) with 11 views, 0 installs and 91,512 GitHub stars. LLM Sandbox has 60/100 (Good) with 4 views, 0 installs and 1,136 GitHub stars.