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

Annotations already establish the safe-read profile (readOnly, idempotent, non-destructive), so the bar is lower. The description still adds real context beyond them: newest-first ordering, that every entry is labelled and linked to its source (important for trusting or citing results), and an 'unofficial, not affiliated with Rockstar Games or Take-Two' disclaimer that matters for how an agent presents the 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?

The core purpose is front-loaded in the first clause, followed by enumeration, the optional filter, and the disclaimer. It is a single dense but well-ordered passage with little waste, though the look-up sentence is somewhat run-on.

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 read-only listing tool with no output schema and fully documented inputs, the description covers what the tool returns (dated, labelled, source-linked entries), ordering, and filtering, plus the provenance disclaimer. Remaining gaps such as result-size behavior are adequately handled by the schema's limit bounds.

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% and both parameters carry descriptions, bounds (1-30) and a date pattern, so the schema does the heavy lifting. The description adds only the ordering note ('newest first') and that the date filter is optional, which is marginal over the schema.

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 a concrete resource (the Leonida Lab changelog of dated entries about GTA 6, newest first) and enumerates what those entries cover (Rockstar/Take-Two/store announcements, press reports, site changes), which goes well beyond the vague name 'recent_changes'. It does not, however, explicitly contrast itself with release_info or check_claim, so an agent must infer the boundary.

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 by 'Optionally only entries since a date', which tells the agent when to supply the filter, and by the changelog framing. There is no explicit when-to-use-this-vs-alternatives guidance against siblings like release_info or check_claim, and no stated exclusions.

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