From e19a627e5dd152a4cd8d7e15e975ee410ed99528 Mon Sep 17 00:00:00 2001
From: Max Isbey <224885523+maxisbey@users.noreply.github.com>
Date: Thu, 6 Nov 2025 15:38:06 +0000
Subject: [PATCH] Add --frozen flag to uv run commands in Claude config

When generating Claude Desktop configuration files, the uv run commands
now include the --frozen flag. This prevents uv from updating lock files
when Claude Desktop launches MCP servers.

Without this flag, running MCP servers could inadvertently update uv.lock,
potentially causing issues in development environments and CI pipelines.
The --frozen flag ensures dependency resolution uses the existing lock
file without modifications.

This also fixes test_command_execution which was executing uv run without
--frozen, causing spurious lock file updates during test runs.
---
 src/mcp/cli/claude.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/mcp/cli/claude.py b/src/mcp/cli/claude.py
index 6a2effa3be..14eb8795f3 100644
--- a/src/mcp/cli/claude.py
+++ b/src/mcp/cli/claude.py
@@ -99,7 +99,7 @@ def update_claude_config(
                 env_vars = existing_env
 
         # Build uv run command
-        args = ["run"]
+        args = ["run", "--frozen"]
 
         # Collect all packages in a set to deduplicate
         packages = {MCP_PACKAGE}