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

Annotations declare openWorldHint and idempotent, and the description adds useful context: it performs a live page fetch, discloses the auth requirement (API key, Free keys accepted), and explains how the determination is made. Given readOnlyHint=false, it would help to clarify that this is not a mutation, but the description adds real behavioral value beyond annotations.

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?

Two compact sentences that front-load the action and follow with the auth prerequisite. No filler, though the parenthesis structure is slightly cramped.

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 single-parameter read-only check with no output schema, the definition covers mechanism and auth prerequisites adequately. It doesn't explain what a 'not installed' result indicates or error behavior on fetch failure, which a richer definition would include.

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% and the siteId description already says it comes from list_sites. The description adds no parameter detail beyond the schema, so baseline 3 applies.

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: re-check whether the Consentio snippet is installed on a site, with the mechanism (fetches the page, matches the site key). This is clearly distinguishable from siblings like get_install_snippet (returns the snippet) and scan_cookies.

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 word 're-checks' implies this is for verifying after install rather than first-time retrieval, hinting at when to use it, but alternatives such as get_site_health are never mentioned. Usage context is implied rather than explicit.

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