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

Annotations already declare the full safety profile (readOnly, idempotent, non-destructive, closed-world), so the bar is low. The description adds the return contents (summary, steps, main links), which is helpful, but says nothing about auth requirements, caching, or link expiry that would go beyond structured data.

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?

Compact and front-loaded: what the tool is, then the value flow, then the return payload. No filler sentences, though the middle clause about the Telegram-assistant workflow is more marketing flavor than invocation-relevant detail.

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?

With no output schema, the description carries return-value disclosure and does so at a high level (summary, steps, main links) — enough for a zero-required-param read-only overview tool. Only the localized-link behavior of the language parameter is left to the schema.

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 description coverage is 100%: the single optional 'language' enum parameter is fully documented in the schema (ISO 639-1, default en). The description never mentions localization, so it adds no meaning beyond the schema — baseline 3 is correct.

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 names the resource (GramForge overview) and states concretely what it covers — what the product is, how it works, the describe-to-assistant workflow — plus what is returned. It is clearly not the FAQ, pricing, or use-case tool, though it never names those siblings explicitly.

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?

Usage is implied: call this to learn what GramForge is before/alongside the other informational tools. There is no explicit when-to-use, no when-not-to use, and no routing to siblings like get_faq or get_pricing when those would be the better fit.

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