approve_file_changes

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

With no annotations, the description carries the full burden and does well: it discloses side effects (journal entry and backup cleared, modifications remain permanently on disk) and implies irreversibility by discarding the backup. It stops short of stating outright that the action cannot be undone or naming any permission/auth requirements, which keeps it from a 5.

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 labeled sections (What it does / When to use / When NOT to use / Side effects / Parameters / Returns) are front-loaded and scannable, and each carries real information. The Returns section is mildly redundant given an output schema exists, costing it the top score.

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 mutation tool with no annotations and a fully opaque schema, the description covers the essentials: effect, prerequisites, side effects, irreversibility implication, and parameter format. Only minor gaps remain (explicit non-reversibility, any auth requirements), and the return-value question is already handled by the output 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 0% for the single file_path parameter, so the description must compensate. It does: it specifies the path is relative to the project root and gives two concrete examples ('QuickActionsWidget.kt', 'ui/theme/AppStrings.kt'), which is exactly the format guidance the bare string schema lacks.

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 (approves), resource (pending changes), and scope (a SPECIFIC file), plus the mechanical effect of removing the journal entry. It also explicitly contrasts with the sibling approve_all_files, so an agent can distinguish the two without inspecting either schema.

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?

Provides explicit when-to-use ('when changes to a specific file have been inspected via get_file_diff and verified correct') and when-NOT-to-use guidance, including the prerequisite that the file must be modified and the alternative tool for the all-files case. Nothing is left to inference.

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