read_file

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

With no annotations, the description carries the full burden, and it discloses the most consequential trait: nothing is actually read, fixed text is returned. It lacks detail on error handling or whether the path is validated or ignored, which keeps it short of a 5.

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?

One short sentence, front-loaded with the verb and resource, with the critical caveat in the same breath. Nothing wasted.

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?

An output schema exists, so return values need no explanation, and the description tells the agent the output is fixed text. The remaining gap is the undocumented required 'path' parameter, minor for a stub that ignores it.

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 only parameter, 'path', is never mentioned in the description. 'Reads nothing' weakly implies the path is ignored, but the required 'path' argument's role, format, or whether it must exist is left unexplained.

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 and resource ('Read a file') and immediately qualifies it with the decisive fact that this is a demo returning fixed text. An agent knows exactly what the tool produces, which matters more than differentiating it from the unrelated siblings (send_email, purchase, etc.).

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 guidance on when to use this versus other tools, and no preconditions stated. The 'demo' note hints at context, but the description never says an agent should not rely on it for real file access or when to prefer an alternative.

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