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

With no annotations, the description carries the full burden and succeeds: it discloses return values, the agent's follow-up responsibility to produce an HTML page, that no authentication is needed, that skipped extras are fine, and that the process is a validation/generation step rather than a publish action.

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 content is dense and valuable with no filler, but it is delivered as one long paragraph with many embedded clauses. Structuring the briefJson specification separately would improve scannability without adding length.

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 complex 6-parameter tool with no output schema and no annotations, the description is remarkably complete: required vs optional params, full optional object shape, output contract, workflow positioning, auth status, and next sibling step are all covered.

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 description fully compensates. It explains every required field in plain language, enumerates pageJob values, gives a concrete primaryAction example, and details the nested structure of briefJson including enums, max counts, and content rules.

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: it validates the client's brief and returns systemPrompt and editRules as Step 1 of OSIR website design. It also distinguishes itself from the sibling osirSitePublish by naming it as the follow-up publish step.

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 explicit before-calling guidance: ask the user for anything you would otherwise guess, offer optional extras in one batch, and do not invent values. It also tells the agent what to do afterwards, making the intended workflow unambiguous.

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