get_chromium_latest_commit

Retrieve the most recent commit details for a specific file in the Chromium repository, including hash, author, message, and changes.

Instructions

MCP handler to get the latest commit information for a specified file in Chromium repository

Args:
    file_path (str): Relative path of the file in Chromium repository (e.g., "components/sync/service/data_type_manager.cc")

Returns:
    str: Formatted commit information including hash, author, message, modified files list, and diff details

Input Schema

TableJSON Schema

Name	Required	Description	Default
`file_path`	Yes

Implementation Reference

src/server.py:70-82 (handler)

The MCP tool handler function, registered via @mcp.tool decorator, which executes the tool logic by instantiating ChromiumCommitFetcher and calling its get_file_commit_info method with detailed and diff options.

@mcp.tool("get_chromium_latest_commit")
async def get_chromium_latest_commit(file_path: str):
    """
    MCP handler to get the latest commit information for a specified file in Chromium repository

    Args:
        file_path (str): Relative path of the file in Chromium repository (e.g., "components/sync/service/data_type_manager.cc")

    Returns:
        str: Formatted commit information including hash, author, message, modified files list, and diff details
    """
    fetcher = ChromiumCommitFetcher()
    return fetcher.get_file_commit_info(file_path, detailed=True, show_diff=True)

src/get_chromium_commits.py:249-281 (helper)

Core helper method in ChromiumCommitFetcher class that orchestrates fetching the latest commit info for a file, retrieves commit details and diff if requested, and formats the output. This is the primary implementation delegated to by the tool handler.

def get_file_commit_info(
    self, file_path: str, detailed: bool = True, show_diff: bool = False
) -> Optional[str]:
    """
    Get complete commit information for a file

    Args:
        file_path: File path
        detailed: Whether to get detailed information (including all modified files)
        show_diff: Whether to show diff code comparison

    Returns:
        Formatted commit information string
    """
    # Get the latest commit for the file
    commit_info = self.get_file_latest_commit(file_path)
    if not commit_info:
        return None

    commit_details = None
    commit_diff = None

    commit_hash = commit_info.get("commit")
    if commit_hash:
        if detailed:
            commit_details = self.get_commit_details(commit_hash)
        if show_diff:
            commit_diff = self.get_commit_diff(commit_hash)

    return self.format_commit_info(
        commit_info, commit_details, show_diff, commit_diff
    )

src/get_chromium_commits.py:27-73 (helper)

Helper method that queries the Chromium Gitiles API to find the latest commit hash and basic info for the specific file path.

def get_file_latest_commit(self, file_path: str) -> Optional[Dict]:
    """
    Get the latest commit information for the specified file

    Args:
        file_path: Relative path of the file, e.g. "components/sync/service/data_type_manager.cc"

    Returns:
        Dictionary containing commit information, or None if not found
    """
    # Normalize path format (use forward slashes)
    normalized_path = file_path.replace("\\", "/")
    # Build API URL to get commit history for this file
    url = f"{self.base_url}/+log/HEAD/{normalized_path}?format=JSON&n=1"

    try:
        print(f"Querying file: {normalized_path}")
        print(f"Request URL: {url}")

        response = requests.get(url, timeout=30)
        response.raise_for_status()

        # Gitiles API returns JSON with a security prefix ")]}'" that needs to be removed
        content = response.text
        if content.startswith(")]}'"):
            content = content[4:]

        data = json.loads(content)

        if "log" not in data or not data["log"]:
            print(f"Error: No commit history found for file {normalized_path}")
            return None

        # Get the latest commit
        latest_commit = data["log"][0]
        return latest_commit

    except requests.exceptions.RequestException as e:
        print(f"Network request error: {e}")
        return None
    except json.JSONDecodeError as e:
        print(f"JSON parsing error: {e}")
        return None
    except Exception as e:
        print(f"Unknown error: {e}")
        return None

Chromium Commits Query Tool