ember_serve

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

With no annotations provided, the description carries the full burden. It discloses the key behavior of rebuilding on file changes, which is critical for a dev server. However, it omits other important behaviors such as blocking the terminal until stopped, the default host/port behavior, or that it starts a long-running process. This leaves the agent somewhat uninformed about runtime effects.

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 description is a single, well-structured sentence that immediately states the core action ('Builds and serves your app') and key feature ('rebuilding on file changes'). It is concise with no redundant words, earning its place perfectly.

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?

Given the high parameter count (20) and no output schema, the description is too brief. It does not explain the development workflow, such as that the server runs continuously until stopped, the default live reload behavior, or how the tool interacts with the Ember CLI ecosystem. More context would help an agent understand when and how to use the extensive parameter set.

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 input schema has 100% coverage with descriptions for all 20 parameters, so the baseline is 3. The tool description does not add any additional meaning or context beyond what the schema already provides. It does not explain when to use specific parameters like proxy settings or suggest sensible combinations, so no extra value is added.

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 clearly states the tool's purpose: building and serving the app with automatic rebuilds on file changes. This distinguishes it from sibling tools like 'ember_build' (which only builds) and 'ember_test_server_run' (which serves tests), making its role in development obvious.

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 description implies use during development by mentioning 'rebuilding on file changes', but it does not explicitly state when to use this tool versus alternatives like ember_build for production or ember_test_server for testing. No when-not-to-use or prerequisite guidance is provided, which is a moderate gap.

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