install_extension

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

Annotations only declare readOnlyHint=false. The description adds genuine behavioral context: the copy destination (user extensions folder) and the non-obvious prerequisite that a running Aseprite must be restarted to load it. It does not state overwrite behavior or whether the extension source is bundled.

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 tight sentences, zero waste. The core action is front-loaded and the restart caveat follows immediately as the second sentence.

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 no-param, no-output mutation, the description covers what happens and the restart requirement. It stops short of noting whether an existing installed extension is overwritten, which would matter on re-runs.

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?

The tool takes zero parameters, so per the baseline there is nothing for the description to disambiguate. The description correctly implies no inputs are required.

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 ('Copies') and a precise resource ('the bridge extension into Aseprite's user extensions folder'). An agent can tell exactly what this does. No sibling is close enough to require explicit differentiation.

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 only implied — install the extension when you need the bridge. There are no explicit when-to-use/when-not-to-use cues and no named alternatives (e.g., relaunching vs installing), leaving the agent to infer the trigger.

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