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

With no annotations provided, the description carries the full behavioral burden and does so thoroughly. It explicitly states 'Free, no side effects,' explains the registered:false/unregistered output behavior, describes the live wire-surface diff, and clarifies that tool_id remains stable across renames. This is unusually transparent.

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 core purpose and well-paragraphed, but it repeats the deploy-drift/unregistered-reporting rationale in two places (#174 and #175) and spends a full paragraph on rename philosophy. It could be tightened without losing essential information.

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 zero-parameter tool with an output schema, the description is highly complete: it explains why the identity mapping matters, what the unregistered array means, how drift is surfaced, and that there are no side effects. Nothing an agent needs to call or interpret this tool is missing.

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?

The tool has zero parameters and an empty input schema, so there is no parameter-level semantic gap. The baseline of 4 applies because the description correctly focuses on output and behavior instead of pretending parameters need explanation.

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 opens with a specific verb and resource: 'Return canonical (tool_id, mcp_name, …) for every tool the wheel exposes.' It also clearly positions itself as the authoritative identity source, distinguishing it from all other list_* siblings by focusing on canonical UUID mapping rather than domain objects.

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 gives clear context for when to use the tool: any client that needs to know how the MCP identifies its tools, and specifically Reconcile for UUID-joining against the pricing model. It does not name explicit alternatives or exclusions, but no sibling tool addresses canonical identity mapping, so the guidance is sufficient.

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