Soma vs MCP Run Python
A side-by-side look at the Soma and MCP Run Python MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
Verdict: choose Soma for code execution work as a local process; choose MCP Run Python for code execution. You can also run both side by side in one mcpServers block.
Which MCP server should you choose?
Choose Soma when
- You need dedicated capabilities in the Code Execution domain.
- You prefer a local stdio subprocess transport.
- You want tools like
soma_verify_code, soma_generate_verified_code.
Choose MCP Run Python when
- You need dedicated capabilities in the Code Execution domain.
- Its auth model fits you: No auth required.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | ||
|---|---|---|
| Category | Code Execution | Code Execution |
| Quality signal | 56/100 · Good | 43/100 · Fair |
| Install command | Confirmed | Not confirmed yet |
| Transport | Local subprocess (stdio) | — |
| Auth | Not declared | No auth required |
| Pricing | Not declared | Free |
| Required env vars | None listed | None listed |
| Verified owner | Community listing | Community listing |
| GitHub stars | 0 | 20,797 |
| Directory activity | 2 views 0 installs 0 upvotes | 2 views 0 installs 0 upvotes |
| Tools | 2 | Not listed |
| Full listing | View Soma | View MCP Run Python |
Tools & capabilities
Soma tools 2
soma_verify_codeRun candidate code against tests inside an isolated sandbox and return a PASS/FAIL verdict with a signed, offline-checkable certificate (Ed25519). Use this to independently confirm that code actually works before trusting it. Two test shapes: - function mode (default): tests = [{"input": [arg1, arg2], "expected": value}] and provide 'entrypoint' (the function name). - stdio mode: set mode='stdio' and tests = [{"stdin": "...", "expected_stdout": "..."}]; no entrypoint needed. Supported languages include python, javascript, typescript, go, c, cpp, java, rust, ruby, php, bash and more.soma_generate_verified_codeAsk Soma to write code for a task. When the task is verifiable, the returned code has been executed against derived tests in an isolated sandbox before it is returned, and a certificate (verdict + tests passed) is attached. Include concrete examples in the prompt (e.g. doctest-style '>>> f(2) == 4') to make the result verifiable rather than best-effort.
MCP Run Python 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.
Soma
{
"mcpServers": {
"soma-2": {
"command": "npx",
"args": [
"-y",
"soma-verify-mcp"
]
}
}
}
MCP Run Python
No confirmed install command for MCP Run Python yet — follow the setup steps linked from its listing page rather than a guessed package name.
Frequently asked questions
Soma is categorized under Code Execution and uses a local stdio subprocess. MCP Run Python belongs to Code Execution and uses an install path we have not confirmed yet. Pick Soma for code execution work and MCP Run Python 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. MCP Run Python has no confirmed install command yet — follow its own setup instructions.
Soma has no declared pricing — check the project's own site. MCP Run Python is listed as free. Auth: no auth required. 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 soma-2 and pydantic-pydantic-ai-mcp-run-python as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, Soma has a quality signal of 56/100 (Good) with 2 views, 0 installs and 0 GitHub stars. MCP Run Python has 43/100 (Fair) with 2 views, 0 installs and 20,797 GitHub stars.