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

With no annotations provided, the description carries the full behavioral burden. It discloses the return payload (metadata, a 'type' field, a content preview) and calls out the special bundle branch (returns the full persona-slug list needed for purchase_persona), which is genuinely beyond-schema behavioral context. It does not cover error behavior or explicitly disclaim side effects, but the 'Get/Returns' framing clearly signals a read-only operation.

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?

Four sentences, each earning its place: purpose, workflow placement, return summary, and slug types plus bundle behavior. The most decision-critical information (purpose and when to use) is front-loaded. It is dense rather than verbose.

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?

No output schema exists, so the description rightly summarizes return values and the bundle-specific behavior. For a one-parameter read tool, it covers purpose, usage timing, parameter values, and output shape. Only minor gaps remain (e.g., behavior on invalid/unknown slugs), which are low-severity for this tool.

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%, so the baseline is 3. The description largely restates what the schema already documents (slug types with examples) and adds only the bundle-specific output context. A minor term mismatch exists — the schema calls the middle category a 'skill slug' while the description calls it a 'Tool slug' — which slightly reduces the value the description adds.

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 uses a specific verb-resource pair ('Get the full details for a specific product on authority.md'), concretely enumerates the three product types (persona framework, functional Tool, curated Bundle), and differentiates from siblings by positioning itself relative to search_personas and purchase_persona. An agent can tell exactly what this tool does and how it differs from its siblings.

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 explicitly states when to use the tool ('Use after search_personas to show complete information before purchase') and connects to purchase_persona by noting bundles return the persona slugs needed for that call. It gives clear workflow placement, though it never explicitly says when NOT to use it in favor of an alternative.

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