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

Adds substantial behavioral context beyond the annotations: the 6 MB size cap, the single-file-not-multi-page constraint, the permanent URL and QR code outputs, and the in-place update semantics when qr_id is provided (preserving public URL and printed QR code). This complements the annotations (readOnlyHint=false, destructiveHint=false) rather than repeating them, giving the agent a clear model of side effects.

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?

Well structured and front-loaded: primary action first, then triggering use cases, then friction-reducing facts, then constraints, then update behavior. Five sentences, each carrying distinct information with zero filler or repetition of the schema.

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?

Complete for a tool of this complexity. It covers the decision-relevant facts an agent needs: when to choose it, the 6 MB input limit, the single-page constraint, the update-vs-create distinction via qr_id, and that no external hosting account is needed. With output schema and annotations present, nothing essential is left unsaid.

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 100%, so the baseline is 3, but the description enriches the parameters with behavior: html is clarified as a complete document forming a single-page site (not multi-page), and qr_id gains meaning as an update trigger that preserves the public URL and QR code. Title and html purpose are reinforced with publisher context ('to publish at a public QRCodeKIT-hosted URL').

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 states a specific verb and resource: 'Publish a single-page static HTML site live on the web' with concrete deliverables (permanent public URL, shareable link, downloadable QR code). The enumerated use cases (landing page, one-pager, digital menu, etc.) make it clearly distinguishable from sibling tools like save_short_link or save_email_link without needing to open schemas.

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 explicit when-to-use guidance with a comprehensive trigger list ('create, publish, deploy, host, share, or put online a landing page...') and a targeting qualifier ('especially when they do not have a website or hosting provider'). It also implicitly differentiates via 'No separate hosting account, build step, or deployment token is required,' though it stops short of naming sibling alternatives or explicit when-not-to-use exclusions.

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