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

Annotations already disclose readOnlyHint, idempotentHint, and destructiveHint, so the safety profile is clear. The description adds that it 'Returns instructions and provides examples', which is consistent with a non-destructive read-only tool. It does not go deeper into behavior (e.g., output format or pagination), but given annotations and output schema, this is sufficient.

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?

The description is three sentences, front-loaded with the primary purpose, and every sentence earns its place. It efficiently covers purpose, examples, and prerequisites without 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 reference tool with an output schema and enum-driven parameters, the description covers the core purpose and prerequisite. It does not explain the return value format, but the output schema handles that. It could mention that guidance selects a specific example, but the enum values in the schema make this inferable.

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%, so the description must compensate. It mentions the framework argument and the 'Other' option, and lists example categories (users, organizations, SSO, API keys, MFA) that map to the guidance enum. However, it does not explicitly describe the guidance parameter's role or that both parameters are optional, leaving some semantics to be inferred from the schema enums.

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 clearly states 'Returns instructions and provides examples for using PropelAuth's backend APIs', specifying the verb and resource. It also distinguishes from sibling tools like integrate_propelauth_backend by clarifying it is a documentation/reference tool rather than an integration tool.

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 provides explicit guidance: 'Before using this tool, make sure you have installed PropelAuth's backend SDK for your framework (use the 'integrate_propelauth_backend' tool).' This names an alternative tool and gives a prerequisite. However, it does not explicitly state when NOT to use this tool (e.g., for frontend tasks), so it lacks full exclusions.

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