PRIMS vs Sandbox as a Service
A side-by-side look at the PRIMS and Sandbox as a Service MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
Verdict: choose PRIMS for code execution work over a hosted endpoint; choose Sandbox as a Service for code execution over a hosted endpoint. You can also run both side by side in one mcpServers block.
Which MCP server should you choose?
Choose PRIMS when
- You need dedicated capabilities in the Code Execution domain.
- You prefer a remote HTTP/SSE transport.
- Its auth model fits you: No auth required.
- You want tools like
run_code, list_dir, preview_file.
Choose Sandbox as a Service when
- You need dedicated capabilities in the Code Execution domain.
- You prefer a remote HTTP/SSE transport.
- You have the keys it needs:
AAS_API_KEY, AAS_BASE_URL.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | ||
|---|---|---|
| Category | Code Execution | Code Execution |
| Quality signal | 51/100 · Good | 37/100 · Fair |
| Install command | Confirmed | Confirmed |
| Transport | Remote HTTP/SSE | Remote HTTP/SSE |
| Auth | No auth required | Not declared |
| Pricing | Free | Not declared |
| Required env vars | None listed | AAS_API_KEYAAS_BASE_URL |
| Verified owner | Community listing | Community listing |
| GitHub stars | 30 | 0 |
| Directory activity | 3 views 0 installs 0 upvotes | 1 views 0 installs 0 upvotes |
| Tools | 5 | Not listed |
| Full listing | View PRIMS | View Sandbox as a Service |
Tools & capabilities
PRIMS tools 5
run_codeExecute Python in an isolated sandbox with optional pip deps.list_dirList files/directories inside your session workspace.preview_fileReturn up to 8 KB of a text file for quick inspection.persist_artifactUpload an `output/` file to a client-provided presigned URL.mount_fileDownload a remote file once per session to `mounts/<path>`.
Sandbox as a Service tools
No tool names declared yet. Check the project README from the listing page.
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.
PRIMS
{
"mcpServers": {
"hileamlakb-prims": {
"url": "http://0.0.0.0:9000/mcp"
}
}
}
Sandbox as a Service
{
"mcpServers": {
"sandbox-as-a-service": {
"url": "https://sandbox-as-a-service.com/v1/mcp"
}
}
}
Frequently asked questions
PRIMS is categorized under Code Execution and uses a remote HTTP/SSE transport. Sandbox as a Service belongs to Code Execution and uses a remote HTTP/SSE transport. Pick PRIMS for code execution work and Sandbox as a Service 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.
PRIMS is listed as free. Auth: no auth required. Sandbox as a Service 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 hileamlakb-prims and sandbox-as-a-service as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, PRIMS has a quality signal of 51/100 (Good) with 3 views, 0 installs and 30 GitHub stars. Sandbox as a Service has 37/100 (Fair) with 1 views, 0 installs and 0 GitHub stars.