A macOS menu bar application for monitoring and managing local services, Docker containers, and MCP (Model Context Protocol) servers
ServiceBar exhibits severe definition quality gaps across all dimensions. Tool names lack action verbs (scan, scanDocker, scanMCP are weak; should be list_services, list_docker_containers, list_mcp_servers). Descriptions are minimal (10-30 chars) and lack context on WHEN to use each tool or what they return. Input schemas are present but sparse: most parameters lack type details beyond 'object' with vague descriptions like 'ServiceInfo object' or 'DockerContainer object', no nested field documentation. No output schemas documented. Error handling is absent. Security concerns: startService accepts arbitrary shell commands with no validation or injection guards. No pagination, no result limits, no idempotency markers. Tool composition is poor: restartService and restartContainer require passing entire objects rather than IDs, forcing the agent to maintain state. Baseline: 549 production tools average 18-char names starting with action verbs; 100% of A+ tools have param descriptions; 94% have docstrings. ServiceBar fails on all three counts.
Add an MCP server configuration to the agent config file
Install an MCP server via npm
Check if an MCP server is configured in the agent config file
Remove an MCP server configuration from the agent config file
Reset all hidden apps and services to visible
Restart a Docker container
Restart a running service
Scan for running services and Docker containers
Scan for Docker containers and their status
Tool names lack action verbs. 'scan', 'scanDocker', 'scanMCP' are weak discovery names; should be 'list_services', 'list_docker_containers', 'list_mcp_servers'. LLMs infer intent from names, weak names cause wrong tool selection.
Descriptions are 10 - 30 characters, far below the 194-char baseline for production tools. 'Scan for running services and Docker containers' lacks WHEN to use, what it returns, or how it differs from scanDocker. LLMs cannot select tools without context.
Input schemas use vague 'object' types with no nested field documentation. 'ServiceInfo object' and 'DockerContainer object' are opaque, LLMs cannot construct valid payloads without seeing field names, types, and constraints. No output schemas documented.
| Scored | Grade | Overall | Spec posture | Rubric |
|---|---|---|---|---|
| 2026-09-23 | F | 32 | 2026-07-28+ | v2 |
Scan for installed and configured MCP servers
Set a display alias for a service group
Set a tag/category for a service group
Start a Docker container
Start a service with the given command
Stop a Docker container
Stop a running service by process ID
Toggle visibility of an application in the service list
Toggle visibility of a service in the service list
Uninstall an MCP server via npm
startService accepts arbitrary shell commands with no validation, injection guards, or confirmation. A malicious agent could pass 'rm -rf /' and execute it. No dry-run, no confirmation, no audit trail.
No error handling guidance. Tools return success/failure with no recovery hints. If installMCPServer fails, the LLM has no idea whether to retry, ask the user, or try a different server. No categorization of retryable vs fatal errors.