capture_device_parameter_snapshot

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

The annotations already declare readOnlyHint=true and destructiveHint=false, and the description adds context beyond that: the capture is persistable JSON and performs a consistent live identity check. This enriches the agent's understanding of behavior without contradicting the annotations.

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 dense sentences with no filler. The core action and scope are front-loaded, and the exclusion clause earns its place by preventing confusion with preset-based workflows.

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 two-parameter read-only capture tool, the description covers purpose, output format, and scope exclusions. The 'consistent live identity check' phrase could be more explicit about failure behavior, but nothing essential to invoking the tool is missing.

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 trackId and deviceId are already clearly documented as stable IDs from specific sources. The description does not add parameter-level meaning beyond the schema, so the baseline 3 is appropriate.

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 uses a specific verb and resource ('capture exposed device parameters') and immediately clarifies that it is not a native preset, distinguishing it from related siblings like capture_device_chain_snapshot and recall_device_parameter_snapshot. It also states the output is persistable JSON, leaving no ambiguity about what the tool does.

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 provides clear scope: it targets exposed device parameters and explicitly excludes hidden plugin state, samples, automation, and mappings. It does not explicitly name alternative tools, but the exclusion wording effectively indicates when this tool is appropriate.

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