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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false and openWorldHint=false, so the safety profile is fully covered structurally. The description adds that the result includes 'evidence and Safe-Call contract', which is useful payload context, but it discloses nothing about failure modes, auth needs, or lookup-miss behavior.

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?

A single front-loaded sentence with no filler; the verb and resource lead, and the qualifier follows. Every clause carries information, though the 'evidence and Safe-Call contract' clause could be more precise about what the agent receives.

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 one-required-param read tool with an output schema present, the description covers the core act and the return payload, so return-value documentation is correctly delegated. What is missing is sibling differentiation and any hint about identifier provenance, leaving the agent to guess where a valid capability_id comes from.

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 0%, and the schema only constrains length (1-128) without explaining what the value is. The description partially compensates by identifying it as a 'canonical action ID', which conveys that a standardized identifier format is expected, but gives no example, source, or format 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 ('Get') and resource ('every provider capability'), scoped by a canonical action ID. It is discernible from get_provider_profile and evaluate_safe_call, but the description never explicitly distinguishes itself from those siblings, so an agent must infer the boundary.

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?

No when-to-use or when-not-to-use guidance is given. The phrase 'with this canonical action ID' implies a keyed lookup, but nothing tells the agent when to reach for this tool instead of get_provider_profile or evaluate_safe_call, and no prerequisites are stated.

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