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

Annotations already declare readOnlyHint=false and destructiveHint=false, so the 'WRITE:' prefix and the POST endpoint are largely reinforcing structured data. The description does add a useful behavioral fact (the section is not attached to any proposal) but says nothing about permissions, whether the name must be unique, or whether category/description are optional.

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?

A single compact sentence with the write indicator front-loaded and the critical scope caveat inline. No wasted words.

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?

For a mutation with no output schema and low schema description coverage, the definition covers intent and scope but leaves the parameter semantics and required-vs-optional structure entirely to the schema. Adequate but with clear gaps.

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 only 25%, so the description carries most of the burden, yet it mentions none of the four parameters. It doesn't explain what 'sectiontype' (opening/closing) means in practice nor that only name and sectiontype are required while category and description are optional.

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 ('save a reusable content section on the account') and immediately disambiguates scope with '(it is not added to any proposal)', which cleanly separates it from bidsketch_add_proposal_section. An agent can distinguish create_section from add_proposal_section without opening either 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?

The parenthetical clarifies the condition under which this tool is the wrong choice, implying add_proposal_section is the alternative for proposal-attached sections. It does not spell out that alternative by name or state prerequisites, 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.