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

No annotations are present, so the description carries the full burden. It discloses the need for a Proof account and authentication, and notes that start_login is not sufficient. It also describes the return structure. However, it does not explicitly state that the operation is read-only, nor mention any error conditions, rate limits, or side effects.

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 concise sentences convey purpose and return format, with a separate ACCESS note for authentication. The information is front-loaded and every sentence earns its place, though the access note could arguably be integrated more smoothly.

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?

Given a simple list tool with one parameter and no output schema, the description covers the core needs: what it returns, how it organizes data, and authentication requirements. It does not clarify the meaning of 'merged with defaults' or mention pagination, but these are minor gaps for this tool type.

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% because profile_id already has a description ('Profile ID'). The description adds no further meaning, such as format, constraints, or examples, so it provides minimal value beyond the schema.

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 ('templates for a profile'), with details on organization (by channel and message type) and merging with defaults. Clearly distinguishes from siblings like list_templates and get_default_templates by indicating profile-specific scope.

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?

Provides authentication context and a caveat that start_login does not open this tool, but does not explicitly mention when to use this over alternatives such as list_templates or get_default_templates. Usage is implied by the purpose, but no explicit exclusions or sibling references.

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