atlas_overview

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

Annotations already declare readOnlyHint=true, so safety is covered. The description adds real behavioral value by disclosing what the 'structure: true' flag changes in the response (central concepts and link-graph communities), but says nothing about response size, cost, or what the default/omitted case returns.

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?

Two dense sentences with the returned content front-loaded and the parameter effect second; nothing is padded. The telegraphic style (colon-joined clauses) is terse but not wasteful.

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 parameterless-required read tool with no output schema, the description gives an adequate picture of the payload and the optional flag's effect. It leaves domain terms ('Maps', 'Journals', 'atlas') unexplained and does not state what the baseline (structure omitted) response looks like, so an agent still has to infer the default shape.

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 0% and the single boolean carries no schema description, so the description must compensate — and it does, explaining that structure=true augments the output with central concepts and link-graph communities. It leaves the false/omitted behavior implicit, so it is not exhaustive.

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 names a specific resource bundle — the root index.md plus Maps and Journals with concept counts — and signals an orientation purpose ('where to start reading'). It does not, however, distinguish itself from near-neighbors like index_get or graph_context, so an agent must infer which overview-flavored tool to pick.

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 trailing clause 'where to start reading' implies the use case (initial orientation, entry point discovery) but never states when to prefer this over index_get, map_list, or graph_context, nor any exclusions or prerequisites. Usage is implied rather than specified.

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