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

Annotations already declare readOnlyHint=true and destructiveHint=false, so the safety profile is covered. The description adds the fact that results are scoped to the library, but says nothing about pagination, result limits, or ordering, so it adds only modest value beyond the annotations.

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 short sentences, front-loaded with the resource and immediately followed by the filter surface. Every clause earns its place with no filler or redundancy.

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 simple all-optional list tool with a full-coverage schema and a read-only annotation, the description is adequate but thin. With no output schema, it does not indicate what a listed template contains or how results are shaped, which an agent would otherwise need to infer.

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 every parameter is already documented with its own format guidance (comma-separated tags, full-text query, status enum). The description merely restates the filter names and contributes no additional semantics, which is the baseline 3 case.

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 (List) and resource (protocol templates in the library), which is clearly distinct from get_protocol (singular fetch), create_protocol, and list_protocol_runs. However, it does not explicitly differentiate itself from near siblings such as suggest_csd_templates or list_capability_types, so it stops short of a 5.

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 enumerated filters (tags, capabilities, search, status) imply how the tool is intended to be used, but there is no explicit when-to-use statement and no mention of alternatives like get_protocol for fetching a single template. Usage is inferable rather than stated.

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