テキスト入力欄に値を入れる

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

With no annotations, the description carries full behavioral burden. It usefully discloses the locating mechanism (label or placeholder), but says nothing about failure behavior when no field matches, whether existing values are overwritten, or whether input events are dispatched.

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 front-loaded sentence that states the mechanism first and appends examples. Efficient with no wasted wording, though it could not be shorter without losing the field-locating detail.

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 two-parameter UI automation tool with no annotations and no output schema, the description covers the core action and target fields but omits error/edge behavior and interaction side effects, leaving meaningful gaps for an agent.

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 description must compensate. It partially does: 'name' is implied to be the label/placeholder identifier and 'value' is illustrated with examples, but exact-match semantics and format expectations remain unstated.

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+resource ('find the input field by label or placeholder and enter a value') and gives concrete examples (BPM, start seconds, file name). It is distinguishable from siblings like jizura_set_checkbox and jizura_click, though it never names them explicitly.

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?

Usage is implied by the field-locating mechanism (label/placeholder), but there is no explicit when-to-use guidance, no mention of prerequisites, and no routing against alternatives such as jizura_set_checkbox or jizura_set_lyrics.

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