Does MCP Python Interpreter work with Claude Code?

Q: Does MCP Python Interpreter work with Claude Code?

Not in our test. In our test on 2026-10-15 (Claude Code 2.1.296 (Claude Code), plan: Claude Pro), MCP Python Interpreter failed the agent task.

Not in our test. MCP Python Interpreter installed in Claude Code but failed our agent task on Oct 15, 2026. Details of what went wrong are below.

Result

ResultFailed

Date testedOct 15, 2026

Plan tested onClaude Pro

App version2.1.296 (Claude Code)

Modelhaiku

Steps

install OK
connected Failed
tools visible Not runClaude Code CLI has no non-interactive tool-list command; tool visibility is checked in the task step
agent task: run cell FailedWhy it failed: no successful call to this server's tools; no tool result containing ['42']

From our own harness run, not the maker’s claims. How we test.

What happened in this run

Install config we used

claude mcp add -s local mcp-python-interpreter -- uvx mcp-python-interpreter --dir /workspace/timmy/harness/sandbox/pyinterp

Connection check

mcp-python-interpreter: uvx mcp-python-interpreter --dir /workspace/timmy/harness/sandbox/pyinterp - ✘ Failed to connect — CONNECTION_CLOSED: Connection closed

Tools check

not_run

Raw details from our harness log for this run. Secrets redacted.

Set it up in Claude Code

Copy-paste config for every app is on the MCP Python Interpreter page. Not connecting? Claude Code MCP troubleshooting.

Other apps we tested it in: Cursor (failed).

All MCP servers tested in Claude Code