diff --git a/bugbug/tools/code_review/prompts.py b/bugbug/tools/code_review/prompts.py
index 7bffd5c442..8ee20da13a 100644
--- a/bugbug/tools/code_review/prompts.py
+++ b/bugbug/tools/code_review/prompts.py
@@ -28,7 +28,7 @@
 **Step 3: Verify and Assess Confidence**
 - Use available tools when you need to verify concerns or gather additional context
 - Only include comments where you are at least 80% confident the issue is valid
-- When uncertain about an issue, use tools like `find_function_definition` or `expand_context` to verify before commenting
+- When uncertain about an issue, use available tools to verify before commenting
 - Do not suggest issues you cannot verify with available context
 
 **Step 4: Sort and Order Comments**
diff --git a/services/mcp/src/bugbug_mcp/server.py b/services/mcp/src/bugbug_mcp/server.py
index a10b6eb251..f3629aff2d 100644
--- a/services/mcp/src/bugbug_mcp/server.py
+++ b/services/mcp/src/bugbug_mcp/server.py
@@ -12,8 +12,6 @@
 from fastmcp.resources import FileResource
 from pydantic import Field
 
-from bugbug import utils
-from bugbug.code_search.searchfox_api import FunctionSearchSearchfoxAPI
 from bugbug.tools.code_review.prompts import SYSTEM_PROMPT_TEMPLATE
 from bugbug.tools.core.platforms.bugzilla import SanitizedBug
 from bugbug.tools.core.platforms.phabricator import (
@@ -57,40 +55,6 @@ async def patch_review(
     return system_prompt + "\n\n" + initial_prompt
 
 
-def get_file(commit_hash, path):
-    if commit_hash == "main":
-        commit_hash = "refs/heads/main"
-
-    r = utils.get_session("githubusercontent").get(
-        f"https://raw.githubusercontent.com/mozilla-firefox/firefox/{commit_hash}/{path}",
-        headers={
-            "User-Agent": utils.get_user_agent(),
-        },
-    )
-    r.raise_for_status()
-    return r.text
-
-
-function_search = FunctionSearchSearchfoxAPI(get_file)
-
-
-@mcp.tool()
-def find_function_definition(
-    function_name: Annotated[str, "The name of the function to find its definition."],
-) -> str:
-    """Find the definition of a function in the Firefox codebase using Searchfox."""
-    functions = function_search.get_function_by_name(
-        "main",
-        "n/a",  # The file path is not used
-        function_name,
-    )
-
-    if not functions:
-        return "Function definition not found."
-
-    return functions[0].source
-
-
 @mcp.resource(
     uri="bugzilla://bug/{bug_id}",
     name="Bugzilla Bug Content",