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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so the safety profile is covered. The description adds genuinely useful scoping by limiting results to the public schema and by naming the categories of metadata returned. It says nothing about permissions required, result size or pagination, so it stops short of rich behavioral context.

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 terse fragments, front-loaded with the verb and the returned fields, with no filler. The telegraphic style and the trailing raw endpoint spelling are slightly ragged but do not impede selection.

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?

With no output schema, the description carries the burden of describing return content, and it does so at a summary level (columns, access rules, security notes). For a simple three-identifier read tool with full annotation coverage, that is nearly complete; only the sibling differentiation 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?

Schema description coverage is 100%, so all three required identifiers are documented in the schema itself. The description adds no meaning about how organization_id, project_id and environment_id scope the introspection, which is acceptable at full coverage but is a missed opportunity.

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 clear resource (public tables) and enumerates the payload an agent gets back: columns, access rules, security notes. That is more than a tautology. However, it never distinguishes itself from the closely overlapping siblings tables.list, tables.describe and database.query, so an agent cannot pick this one on purpose alone.

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?

There is no when-to-use guidance and no exclusion of alternatives, despite three sibling tools that plausibly do the same thing. The only hint is the implicit notion that this is a metadata-introspection call, which the agent has to infer.

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