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

readOnlyHint=true already tells the agent this is a safe read, so the bar is lower. The description adds that the result is paste-ready code and that the 'fetch' variant includes timeout and fallback behavior, but says nothing about auth requirements beyond what the schema states, nor about the shape/size of the returned snippets.

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?

One front-loaded sentence stating the action, followed by a compact routing list. The second clause is dense to the point of being run-on, but no sentence is wasted.

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 no-output-schema read tool, the description should fully cover the platform enum it depends on, yet five documented enum values (ajax, curl, webflow, framer, wordpress) get no guidance, so an agent selecting those values is guessing. Otherwise adequate for a simple code-retrieval 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 67% and the platform enum has no per-value description in the schema, so the description's mapping of platform values to deployment contexts adds real meaning. It falls short by covering only 8 of the 13 enum values, leaving the no-code and ajax/curl options undefined.

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 ('Get ready-to-paste integration code for a form'), with scope narrowed to 'a given platform'. No sibling tool in the list produces integration code, so the agent can distinguish it immediately.

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?

Gives value-level routing guidance ('html' for static sites, 'react' for SPA client components, 'fetch' for Workers/Node/Next/Deno, backend frameworks when the form posts to your own backend). It never names an alternative tool or a when-not condition, and it silently omits five valid enum values (ajax, curl, webflow, framer, wordpress).

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