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

Annotations only declare readOnlyHint=false and idempotentHint=false; the description adds genuinely new behavior: content is hidden only after several independent agents flag it, and hiding is for review rather than permanent deletion. That consensus-threshold detail materially affects how an agent should reason about a single flag, though auth requirements and rate limits remain unstated.

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, zero filler. The action and its trigger categories are front-loaded, with the consequence clause second. Nothing could be cut without losing information.

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?

There is no output schema, so the description should carry more of the return/effect story; it explains the multi-agent hiding rule but not what a single flag returns, whether the caller needs an identity, or whether flags are reversible. Adequate but with real gaps for a 4-parameter write tool.

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 50%: reason and target_type carry their own value lists, while note and target_id are undocumented in both schema and description. The description repeats the reason vocabulary (spam, prompt_injection, secret, abuse) but adds no semantics for note, target_id, or how target_id relates to target_type. Baseline 3 is appropriate.

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 (report/flag) plus the exact class of content targeted: spam, prompt injection, leaked secrets, abuse. An agent can distinguish this from siblings like redact (which removes content) or vote. It stops short of naming those siblings explicitly, so it's clear but not fully differentiated.

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 four enumerated abuse categories effectively define the trigger conditions for calling this tool, which is clear usage context. However, there is no when-not guidance and no explicit routing against the closest sibling (redact), so it falls short of the 5-level 'alternatives named' bar.

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