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

Annotations already declare readOnlyHint, idempotentHint, and non-destructive, so the safety profile is covered. The description adds genuinely useful behavioral context beyond annotations: that widgets reference a preset catalog_id while custom metrics/charts carry inline config, and the replacement semantics of the downstream set_dashboard_widgets. It does not cover output shape, but no output schema exists so this is a modest gap.

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?

Three sentences, front-loaded with what is fetched, then content structure, then the when-to-use rule. Every sentence earns its place with no filler.

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 single-param read tool with full annotation coverage and no output schema, the description supplies the key context: what the layout contains, how references are shaped, and the ordering constraint relative to set_dashboard_widgets. It is complete enough for correct invocation; the only minor gap is return-shape detail, which is acceptable without an output schema.

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 dashboard_id parameter is already documented as 'a shared dashboard id from list_dashboards'. The description reinforces the scoping ('one org-shared dashboard') which clarifies that list_dashboards is the source of valid ids, but adds no syntax the schema lacks. A 4 reflects the marginal reinforcement without introducing new parameter detail.

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?

States a specific verb and resource ('Fetch one org-shared dashboard's full layout') and enumerates what the layout contains — placed widgets, custom metrics, custom charts, grid positions. This clearly distinguishes it from list_dashboards (enumeration) and from list_dashboard_widget_catalog (the preset catalog).

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?

Gives explicit when-to-use guidance: call before set_dashboard_widgets if you want to preserve existing widgets, because that tool always replaces the whole set. It also points to list_dashboard_widget_catalog for resolving catalog_id references, routing the agent to the right sibling.

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