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

Annotations already flag destructiveHint=true and idempotentHint=true; the description corroborates this by describing replacement of the existing board and adds per-field limits (400/200/2000 chars, 10 items, 6 pairs) plus emoji removal semantics. It does not clarify what happens to open/done/faq when they are omitted (null default), which is the key behavioral question for a destructive replace.

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?

Front-loaded with the core action, then structured as compact per-field constraints with no filler sentences. Every clause carries information an agent needs to fill the payload correctly.

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, so the brief 'Returns ok and humans_present' is a harmless redundancy rather than a necessity. The description covers constraints and emoji behaviour well; the remaining gap is whether omitted open/done/faq clear or preserve existing board content on a destructive replace.

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 adds the whole-board 2000-character budget and the 'empty string removes it, left out keeps it' rule for emoji, neither of which is fully stated in the schema. The omitted-field behaviour for the other parameters remains unaddressed.

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 ('Replace the agent's status board on the call page with this one') and immediately scopes it against the sibling verbs by noting it is 'never spoken', unlike say. An agent can distinguish this from say/show/send_data without opening any schema.

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?

Explains the operating context clearly: this writes the board that the voicebot answers the person's progress questions from, which implies when it should be used instead of speaking. It does not explicitly name alternatives or state when not to use it, so it falls short of a 5.

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