page_builder_chat

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 describes that the tool generates HTML/CSS/JS and is chat-based, but it does not disclose any potential side effects (e.g., overwriting previous design), rate limits, or authentication requirements. The information is adequate but not detailed.

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 description is concise: three sentences plus an Args section. The first sentence states the purpose, the second adds context, and the third advises iterative use. No unnecessary words; every sentence earns its place.

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?

Given the tool has an output schema and simple parameters (2 required strings), the description covers the essentials: purpose, how to obtain session_id, and example message. It could mention error handling or limitations, but overall it is sufficiently complete for this straightforward 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?

The schema has 0% description coverage, but the description adds value: for session_id, it states 'The session ID from page_builder_create' (clarifying source), and for message, it gives an example ('Add a pricing section with 3 tiers'). This goes beyond the bare schema titles and provides practical guidance.

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 clearly states the tool's purpose: 'Send a message to a page builder session to design or modify pages.' It specifies the resource (page builder session) and the action (design/modify). It distinguishes from sibling tools like page_builder_create and page_builder_deploy.

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 description advises 'Use iterative messages to refine the design,' implying when to use (after session creation, for iterative refinement). It mentions the session_id comes from page_builder_create. However, it does not explicitly state when not to use this tool or mention alternative tools.

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