Update note

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

The annotations already declare readOnly=false, idempotent=true, destructive=false, and openWorld=true, so the safety profile is covered. The description usefully implies partial semantics by listing only the fields being changed, but it does not say what happens to unspecified fields, whether null clears a value or leaves it alone, or how a missing note_id is handled. With annotations present, this is adequate but thin.

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?

The first sentence is front-loaded with the actionable content and wastes no words. The second line, a raw HTTP endpoint, adds little for an agent choosing a tool and is arguably filler, which keeps this from a 5.

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 five-parameter mutation tool with no output schema, the definition covers which fields can change and requires note_id, which is enough to invoke it. It omits the response shape and the failure mode when the note does not exist, so it is complete enough to call but not fully specified.

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 description coverage is 0%, so the description carries the burden of documenting the five parameters. It maps four of them to plain-language fields, which is real added value over bare names, but every parameter defaults to null and the description never explains whether null means 'leave unchanged' or 'clear the field' — the single most important ambiguity for a patch-style update.

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 names a specific verb (change) and resource (one note) and enumerates the mutable fields: title, content, category, favorite flag. This clearly separates it from create_note, get_note, and delete_note. It stops short of explicitly naming a sibling, so it lands at 4 rather than 5.

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?

There is no when-to-use guidance, no prerequisites, and no mention of alternatives such as create_note for a new note or update_card for other resource types. The PUT path hints at a partial-update semantics, but the agent must infer both that and the requirement that the note already exist. 'One note's' is the only scoping cue.

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