fanar_generate_image

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

With no annotations, the description carries the full burden, and it does disclose real behavior: the image is persisted to disk, the return contains a file path plus Fanar's revised prompt, and there is a ~20 requests/day rate limit. It omits other behavioral facts an agent needs, such as whether an existing file is overwritten when 'filename' is supplied, latency/cost, or any auth requirements.

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 clauses plus a rate limit, with the action and its side effect front-loaded and the return contract immediately after. Every sentence carries information; nothing is padded.

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?

The description usefully covers the return contract in the absence of an output schema and flags the rate limit, but with no annotations and 0% schema coverage it leaves the optional 'filename' behavior and overwrite semantics undocumented. Adequate but with a clear parameter-side gap.

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% across 3 parameters, so the description must compensate and largely does not. It hints at 'prompt' and at revision ('the prompt as Fanar revised it', which relates to the 'revise' flag), but the optional 'filename' parameter is never mentioned, so the agent has no idea what supplying it does.

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 ('Generate a culturally aware image with Fanar Oryx'), adds the side effect ('and save it'), and names what comes back ('the file path and the prompt as Fanar revised it'). It is the only image-generation tool among siblings that are all text/speech/QA tools, so the agent can route to it unambiguously.

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?

Usage is implied by the verb (generate an image) and no alternatives exist among the siblings, but the description never states when to prefer it, when not to use it, or any prerequisite (e.g., whether a model must be selected first). The rate-limit note ('About 20 requests a day') is useful planning context but is not usage guidance per se.

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