arch-mcp

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnlyHint=true, so the agent knows this is a safe read operation. The description adds useful context about the two specific actions available and provides concrete examples, but doesn't disclose additional behavioral traits like rate limits, authentication needs, or what 'unified' actually means operationally.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is efficiently structured with a purpose statement, action listing, and concrete examples in just three sentences. However, the bracketed '[ORGANIZATION]' placeholder adds unnecessary noise, and the description could be more front-loaded by leading with the core purpose rather than the organizational context.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a read-only tool with two simple parameters and no output schema, the description provides adequate context about available actions with examples. However, it doesn't explain what 'groups' or 'packages' mean in this context, what format the returns will have, or how this fits into the broader system management context with its many sibling tools.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

With 100% schema description coverage, the schema already fully documents both parameters (action with enum values, group_name with requirement context). The description adds minimal value by restating the action names in examples but doesn't provide additional semantic context beyond what's in the structured schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states this is a 'Unified group management tool' with specific actions (list_groups, list_packages_in_group), providing verb+resource clarity. However, it doesn't explicitly distinguish this tool from its many siblings like 'manage_orphans' or 'manage_install_reason' that also manage system entities.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides examples showing when to use each action variant, which implies usage context. However, it doesn't explicitly state when to choose this tool over alternatives like 'query_package_history' or 'get_official_package_info' for package-related queries, nor does it mention any prerequisites or exclusions.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.