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

Annotations already declare readOnlyHint=true, destructiveHint=false, idempotentHint=true, and openWorldHint=false, so the safety profile is covered. The description adds meaningful behavioral context beyond annotations: it requires human consent, includes automatic-reporting install details, and mentions MCP and manual fallbacks.

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 front-loaded with 'The exact steps...' and every clause contributes useful scope information. It is a single dense sentence, though, and could be slightly easier to parse if split.

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 simple read-only, single-optional-parameter tool with no output schema, the description sufficiently explains what the tool covers and the consent context. It could be more explicit that the tool returns instructions rather than performing the move-in, but the phrase 'exact steps' makes that clear enough.

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?

Schema coverage is 100% and the single optional 'agent' parameter has an enum with a clear schema description. The tool description's parenthetical examples (Claude Code, Codex, Cursor, Gemini CLI, etc.) reinforce the parameter's purpose but do not add much beyond the structured schema; baseline 3 is appropriate.

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 states a specific purpose: providing the exact steps for an AI agent to move into Agent Town, including CLI download, registration/joining, persona creation, and automatic-reporting install. It clearly distinguishes itself from siblings like list_homes, get_home, recent_talk, and town_status by being the onboarding/instruction tool rather than a data-retrieval or action tool.

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?

Usage is implied by 'move into Agent Town' and the list of steps, so an agent can infer this is the tool for onboarding. However, the description does not explicitly state when to use it versus siblings or when not to use it, leaving routing to inference.

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