note

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

No annotations are provided, so the description carries the full burden. It does disclose one behavioral trait beyond the schema — notes are searchable and therefore persisted — but says nothing about whether multiple notes may be attached to one URL, whether writes are irreversible, or what happens on failure.

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 sentences, front-loaded with the action, and no filler. The trailing fact about searchability earns its place by changing how an agent writes the note text.

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 return values need no explanation, and the tool is structurally simple with two required params. The description is nearly sufficient; only the duplicate/multiplicity behavior for notes on the same URL is left unstated.

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 0%, so the schema only gives bare 'Url' and 'Text' titles. The description partially compensates by illustrating appropriate note content, but it never clarifies constraints on 'url' (absolute vs relative, must it already be saved?) leaving half the parameter meaning to inference.

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: attach a note to a URL. It does not name a sibling or explicitly distinguish itself from related tools like 'add' or 'save_group', but the resource (a note on a URL) is distinctive enough to select it confidently.

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 ("why it was saved, which claim it supports") implies what content belongs in a note, which is useful usage framing. However, there is no explicit when-to-use guidance versus siblings, nor any statement about when not to use it.

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