wallabag_health_check

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

With no annotations, the description carries the burden and does state the important behavioral traits itself: 'read-only' (no mutation, side-effect free) and 'tiny' (cheap, low-cost). It could be richer about failure behavior (e.g. whether it errors vs returns a status), but that is partly covered by the output schema.

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 sentence with the action front-loaded and zero filler. Every word (connectivity, authentication, read-only, tiny) earns its place by conveying distinct information.

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 zero-parameter, read-only health check with an output schema present, nothing an agent needs to invoke it correctly is missing. The description covers purpose, safety profile, and cost profile, leaving return details to the output schema.

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?

The tool takes zero parameters, so there is no parameter semantics to document; per the baseline for 0-param tools this is a 4. The description correctly implies no inputs are required.

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 (verify) plus the exact resources being checked (wallabag API connectivity and authentication). This is unmistakably distinct from every sibling, which are all entry/tag/annotation CRUD operations, so an agent can select it on name+description alone.

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 stated purpose implies the usage context clearly — call it to validate connectivity/auth, typically before or when other calls fail. It does not spell out explicit when-not conditions or warn against calling it per-request, so it falls short of a full 5.

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