set_value

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

Without annotations, description explains replace behavior (clear vs insert) but does not disclose error cases (e.g., non-editable element) or return value.

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?

Concise, front-loaded main purpose, uses Args section efficiently with no redundant sentences.

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?

With output schema present, return values are covered. Lacks mention of element editability checks or timeout behavior, but overall sufficient for a simple tool.

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% yet description explains all three parameters: element_id, value, and replace with boolean behavior, adding meaningful context beyond schema titles.

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?

Description clearly states 'Set text content of an editable element' with specific verb and resource. It distinguishes from siblings like 'type_text' (typing) and 'select_text' (selection).

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?

Provides details on 'replace' parameter behavior but no explicit when-to-use or when-not-to-use guidance relative to siblings like 'type_text' or 'set_numeric_value'.

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