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

The annotation only provides openWorldHint: false, so the description carries most of the behavioral transparency burden. It does this well by disclosing that the tool stops scheduled fetches and retains existing chart data, which clarifies the side-effect profile. It does not mention reversibility or return behavior, but for a simple detach operation this is reasonably transparent.

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 two short sentences with no filler, and the primary behavior is front-loaded. Every word earns its place, making it easy for an agent to parse quickly.

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 tool with one parameter and no output schema, the core behavior is conveyed effectively. However, the missing id semantics and lack of explicit usage guidance mean an agent would still need to infer the input and the appropriate scenario, making this only minimally viable.

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 provides only a required string id with no description, and schema description coverage is 0%. The description never explains whether id refers to the chart, the data source, or something else, though the title implies it is the chart id. Since the description must compensate for the missing schema detail but does not, parameter semantics are under-specified.

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 title 'Detach a chart's data source' and description 'Stops scheduled fetches; the chart keeps its current data' clearly identify the action, the resource, and the expected result. It is not tautological and effectively conveys that this is a non-destructive detach rather than a delete or replacement.

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 intended use case is implied by the description: use this tool to stop scheduled fetches while preserving current data. However, there is no explicit guidance about when to use this versus sibling tools like set_data_source or replace_asset_data, and no when-not-to-use conditions.

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