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

Annotations already declare readOnlyHint=false, idempotentHint=false, destructiveHint=false, openWorldHint=false, so the agent knows this is a non-idempotent, non-destructive, local operation. The description adds the genuinely useful chaining contract (site_ref returned and reused), but says nothing about what is actually persisted or created by a non-read-only call, or that repeated invocations may produce distinct briefs.

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 sentences, both front-loaded and purposeful: purpose first, then the chaining contract. No filler, though the chaining sentence is dense with a comma-list of carried fields that could be trimmed.

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 and the description correctly notes site_ref is returned, so return values need not be explained. But for a tool with a heavily nested site_ref object and two unexplained identifier parameters, plus non-read-only behavior, more disclosure of side effects and parameter roles is warranted.

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 only 33%, so the description needs to carry weight, yet it only touches site_ref and largely restates the schema's own site_ref description ("Pass it unchanged to chain"). project_id and conversation_id — including how conversation context is scoped — receive no explanation anywhere in the description.

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?

"Generate a structured site brief from Atlasly project memory and conversation context" gives a specific verb (generate), a specific artifact (structured site brief), and names the data sources, so the agent knows what comes out. It does not, however, distinguish this from adjacent siblings such as draft_site_description, present_site_research, or run_site_package, which plausibly produce related outputs.

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 chaining sentence implies when the tool is applicable: the agent already has a site_ref from a prior Atlasly call and wants a brief built on it. There is no explicit when-not guidance and no routing between this and the many sibling tools that also operate on a resolved site, so selection still requires inference.

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