Bugfender MCP Server

@bugfender/mcp

Bugfender MCP server for local stdio clients such as Cursor, Claude Code, Codex, and Gemini CLI.

What It Provides

• user-scoped Bugfender read access through MCP
• automatic access-token refresh when a refresh token is configured
• logs, devices, app metadata, crash aggregation, and issue aggregation tools
• SDK snippet retrieval for app onboarding
• resource templates for snippets, logs, and issue groups
• companion Bugfender skills distributed from bugfender/bugfender-skills

Maintainers

• development workflow: DEVELOPMENT.md
• release and publish flow: RELEASING.md

Install

npx -y @bugfender/mcp

After adding or updating the MCP server in your IDE or agent, restart that client so it reloads the new MCP configuration cleanly.

If you are running from inside this repository checkout, do not use npx @bugfender/mcp or npx -p @bugfender/mcp bugfender-mcp. npm can resolve the current package instead of the published tarball and fail with bugfender-mcp: not found.

For local development, build and run the generated entrypoint directly:

pnpm build
pnpm start

Configuration

• BUGFENDER_API_TOKEN: required access token
• BUGFENDER_REFRESH_TOKEN: recommended for automatic token refresh
• BUGFENDER_API_URL: optional override, defaults to https://dashboard.bugfender.com/api
• ~/.bugfender/mcp.json: optional config file and local token store for rotated credentials

{
  "default": {
    "apiToken": "YOUR_ACCESS_TOKEN",
    "refreshToken": "YOUR_REFRESH_TOKEN",
    "apiUrl": "https://dashboard.bugfender.com/api"
  }
}

When a refresh token is provided, the MCP stores rotated credentials in ~/.bugfender/mcp.json so automatic refresh survives restarts. Updating the IDE config with a newly generated refresh token resets that local state.

If you are using local or self-hosted Bugfender credentials, BUGFENDER_API_URL must point to the matching backend. For example, local credentials generated from https://dashboard:3000 will not work against https://dashboard.bugfender.com/api.

Cursor / Claude Code

{
  "mcpServers": {
    "bugfender": {
      "command": "npx",
      "args": ["-y", "@bugfender/mcp"],
      "env": {
        "BUGFENDER_API_TOKEN": "YOUR_ACCESS_TOKEN",
        "BUGFENDER_REFRESH_TOKEN": "YOUR_REFRESH_TOKEN",
        "BUGFENDER_API_URL": "https://dashboard.bugfender.com/api"
      }
    }
  }
}

Codex CLI

codex mcp add bugfender \
  --env BUGFENDER_API_TOKEN='YOUR_ACCESS_TOKEN' \
  --env BUGFENDER_REFRESH_TOKEN='YOUR_REFRESH_TOKEN' \
  --env BUGFENDER_API_URL='https://dashboard.bugfender.com/api' \
  -- npx -y @bugfender/mcp

After running codex mcp add, restart the Codex session before testing who_am_i or list_apps.

Gemini CLI

gemini mcp add bugfender npx -y @bugfender/mcp \
  --env BUGFENDER_API_TOKEN='YOUR_ACCESS_TOKEN' \
  --env BUGFENDER_REFRESH_TOKEN='YOUR_REFRESH_TOKEN' \
  --env BUGFENDER_API_URL='https://dashboard.bugfender.com/api'

After running gemini mcp add, start a new Gemini CLI session or reload MCP servers before testing who_am_i or list_apps.

Codex App

In the custom MCP server form:

• Name: bugfender
• Command to launch: npx
• Argument 1: -y
• Argument 2: @bugfender/mcp
• BUGFENDER_API_TOKEN: YOUR_ACCESS_TOKEN
• BUGFENDER_REFRESH_TOKEN: YOUR_REFRESH_TOKEN
• BUGFENDER_API_URL: https://dashboard.bugfender.com/api

Add the arguments as separate rows, not as one combined string.

After saving the server, restart the app before testing who_am_i or list_apps.

Tools

• who_am_i
• list_teams
• list_apps
• get_app
• list_app_versions
• get_sdk_snippet
• get_crashes
• get_crash_stats
• get_crash_device_stats
• get_crash_details
• search_logs
• count_logs
• count_devices_with_logs
• search_devices
• count_devices
• list_issues
• get_issue
• get_issue_stats
• get_issue_device_stats
• get_issue_devices
• get_feedback
• get_app_summary

Resources

• bugfender://snippet/{app_id}/{platform}
• bugfender://app/{app_id}/logs?...
• bugfender://issue/{issue_id}?app_id={app_id}

Companion Skills

The companion skills now live in the separate bugfender/bugfender-skills repository. They encode opinionated workflows on top of the MCP tools:

• use aggregation before logs
• narrow time ranges early
• size impact before deep-diving
• end with a short triage summary

The MCP package gives the agent raw Bugfender capabilities. The skill adds an opinionated investigation workflow on top of those capabilities.

Use the skill when you want Cursor, Codex, or Claude Code to do things like:

• help set up the Bugfender SDK in an app with the minimum required steps
• fetch the SDK snippet for a platform and explain exactly where it goes
• investigate the top crashes in an app
• summarize issue or feedback trends over a time range
• compare impact before and after an app version
• identify likely cause, scope, and next checks

The investigation skill source lives in:

• https://github.com/bugfender/bugfender-skills/tree/main/skills/bugfender

SDK Setup Skill

The dedicated onboarding skill also lives in bugfender/bugfender-skills.

Use it when you want Cursor, Codex, or Claude Code to:

• detect the project platform automatically
• fetch the correct Bugfender SDK snippet
• map the setup to the real repository files
• ask one short feature question when optional capabilities like crash reporting or Android logcat matter
• apply the minimum integration changes
• reduce the developer’s work to one final verification step

It also includes platform-specific references for:

• iOS
• Android
• Flutter
• Unity
• .NET MAUI
• Cordova
• Ionic
• Angular
• React
• Vue
• JavaScript
• jQuery
• Titanium
• Web
• React Native

The skill source lives in:

• https://github.com/bugfender/bugfender-skills/tree/main/skills/bugfender-sdk-setup

Install Skills In Cursor, Codex, Or Claude Code

Cursor, Codex, and Claude Code can install the skills directly from GitHub without cloning the repo manually.

In the agent chat inside your IDE, run this prompt with the built-in installer skill:

Use $skill-installer to install these skills from https://github.com/bugfender/bugfender-skills:
- skills/bugfender
- skills/bugfender-sdk-setup

After installation, restart the client and use:

Use $bugfender-sdk-setup to set up Bugfender in this app with the minimum required changes.