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

Annotations already declare readOnlyHint, idempotentHint, non-destructive, and closed-world, so the safety profile is covered. The description adds useful context that this is a guide/documentation fetch rather than a data mutation, and that its content spans the whole agent lifecycle, which helps the agent understand the payload's nature.

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 sentence with the payload summary front-loaded and the imperative 'Call this first' last. The arrow-chain lifecycle listing is slightly long but is the most information-dense part of the description and earns its space.

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?

With no output schema, the description must convey what comes back, and it does by enumerating the guide's topics. It stops short of stating the return format (e.g., markdown vs. structured sections) or resolving behavior when 'section' is omitted, which is a minor remaining 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 coverage is 100%, so the baseline is 3, but the description goes further by previewing what each content area covers (lifecycle stages, required skills, key tools), which roughly maps to the section values and tells the caller why they would pass a section rather than omit it.

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 ('Get the handoff swarm participation guide') and then enumerates the exact contents the agent will receive (server overview, project→goals→tasks model, lifecycle, skills, key tools). No sibling in the list does this, so the agent can identify it as the orientation/bootstrap document without ambiguity.

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 closing directive 'Call this first' gives explicit, actionable ordering guidance for a first-contact tool. There are no named alternatives or when-not conditions, but for an entry-point guide none are really applicable.

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