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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false and openWorldHint=false, so the safety profile is covered. The description adds genuinely useful behavior beyond that: verification must run on the raw body and targets the Terudo-Signature header specifically, plus the framework variants per language. It does not disclose what the returned code assumes (algorithm, secret handling, error paths), so it stops short of rich behavioral context.

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 compact sentence with the target resource and header front-loaded and the language variants trailing. No filler, though it is a sentence fragment and the parenthetical framework list makes the tail dense.

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 one-parameter read-only tool with full schema coverage and no output schema, the description covers the essentials: what it produces, which header, which languages. The main residual gap is that it never says the result is a code snippet returned as text, but that is largely implied and low-risk.

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?

With a single required parameter at 100% schema description coverage, the baseline is 3. The description does add real meaning by mapping the terse enum values (node/python/php/ruby) to frameworks (Express, Flask, Rails), which the schema's one-word 'Language.' description does not convey, but it offers no further constraint or default.

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 concrete resource and action: code that verifies the Terudo-Signature header of a webhook, on the raw body, in four named languages/frameworks. An agent can tell it produces verification code rather than performing verification itself, though the phrasing 'Code verifying...' is a fragment that leaves the delivery form (snippet vs. file) implicit and does not name a sibling such as elements_snippet as the alternative.

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?

There is no explicit when-to-use or when-not-to-use guidance and no named alternative. Usage is only inferable from the title and the header name (implementing webhook signature checks); nothing tells the agent whether this is preferred over the general snippet or docs tools.

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