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

Annotations already declare readOnlyHint=true, so the safety profile is covered. The description adds genuinely useful framing by stating it explicitly includes what the network *cannot* do, which warns the agent not to over-estimate coverage. It says nothing about return format or length, so it is solid but not rich.

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 with the key scoping point (including limitations) front-loaded via the em-dash aside. No filler, though the '— explicitly —' emphasis is slightly editorial rather than informational.

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 and no parameters, the description needs to signal what content comes back, and it does indicate the topic (attack defenses and their limits). It could say more about the form of the response (policy text, list of guarantees), but for a read-only doc tool it is adequate.

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?

The tool takes zero parameters and the schema is trivially complete, so there is nothing for the description to clarify. Baseline 4 applies for a no-parameter tool.

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?

The description conveys that this is an informational read about the network's defensive posture and its limitations, but the verb is implicit ('what this network does') rather than a specific action. It does not distinguish itself from informational siblings like project100_rules, project100_limits, or project100_info, so an agent cannot tell from the text alone which doc tool holds which content.

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?

'Read before you try anything' is a clear sequencing cue that implies this should be consulted prior to acting on the network. However, no alternative or sibling is named, and there is no when-not guidance to say what this doc does not cover versus project100_rules or project100_limits.

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