Bug Tracker MCP Server

Summary

An MCP Server that leverages notes written in Markdown to track bugs. The server was written for those developing Cisco Nexus Dashboard applications which use the REST API, but could easily be leveraged for other uses.

My use case is providing Claude Code with a resource through which it can determine the suitability of various Nexus Dashboard endpoints for a given task, and whether an endpoint exhibits any behavioral bugs and, if so, what version(s) exhibit the behavior and what version (if any) fixes the behavior. Notes might also contain workaround(s).

The actual notes are not included in this repository.

Setup

1. Install Obsidian and login

2. Setup sync with the ND Vault (vault should be in $HOME/Obsidian/ND)

3. Edit com.bug-tracker-mcp.plist such that the paths match your environment

• OBSIDIAN_VAULT_PATH should point to your ND vault (e.g. $HOME/Obsidian/ND)
• ProgramArguments should call uv server.py via their full paths e.g.
  • /Users/arobel/repos/mcp/bug-tracker-mcp/.venv/bin/uv
  • run
  • /Users/arobel/repos/mcp/bug-tracker-mcp/server.py
• WorkingDirectory should point to this repository on your host
  • /Users/arobel/repos/mcp/bug-tracker-mcp

cd $HOME/repos/mcp/bug-tracker-mcp
vi com.bug-tracker-mcp.plist
cp com.bug-tracker-mcp.plist $HOME/Library/LaunchAgents
chmod 644 $HOME/Library/LaunchAgents/com.bug-tracker-mcp.plist

4. (Re)start the LaunchAgent

launchctl bootout gui/$(id -u)/com.bug-tracker-mcp
launchctl bootstrap gui/$(id -u) $HOME/Library/LaunchAgents/com.bug-tracker-mcp.plist

5. Edit Claude Code's config on the client Mac to point to this MCP server

• edit $HOME/.claude.json
• Search for the mcpServers block
• Add the following (where mm1e is the hostname or IP address of the Mac that's hosting the MCP server)

  "mcpServers": {
    "bug-tracker-mcp": {
      "type": "http",
      "url": "http://mm1e:8001/mcp"
    }
  }

5. Restart Claude Code and check the MCP server status using the /mcp slash command

MCP Server Logic Diagram

flowchart TD
    A("Module import and setup") --> B["Read environment, constants, and create FastMCP"]
    B --> C{"Running as main script?"}
    C -->|Yes| D["Start MCP HTTP server"]
    D --> E["Await MCP tool calls"]
    C -->|No| E

    E --> F{"Which tool is called?"}
    F -->|list_bugs, search_bugs, or get_bug_by_id| I[["_all_notes()"]]
    F -->|find_bugs_for_endpoint or find_bugs_for_version| G{"Version parses?"}
    F -->|get_bug| J{"Target file exists and is relevant?"}

    G -->|No| ERR["Raise ValueError or FileNotFoundError"]
    G -->|Yes| I
    J -->|No| ERR
    J -->|Yes| L[["_load_note(path)"]]

    I --> M{"Vault directory exists?"}
    M -->|No| ERR
    M -->|Yes| R[("Vault files and note cache")]
    R --> N{"More markdown files?"}
    N -->|Yes| O{"Relevant markdown file?"}
    N -->|No| W["Drop stale cache entries and return note set"]

    O -->|No| N
    O -->|Yes| L

    L --> P{"Cached note has same mtime?"}
    P -->|Yes| Q["Reuse cached Note"]
    P -->|No| S["Parse frontmatter and build Note"]

    Q --> T{"Called from get_bug?"}
    S --> T
    T -->|Yes| Z["Return full metadata and content"]
    T -->|No| N

    W --> X["Apply tool-specific sorting, scoring, snippets, and filters"]
    X --> Z