capture_device_chain_snapshot

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

Annotations already declare readOnlyHint=true and destructiveHint=false, so the safety profile is covered. The description adds valuable behavioral context about what is captured and what is intentionally excluded, making the tool's behavior predictable.

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 sentences, no wasted words, purpose stated first, and exclusions listed succinctly. Every sentence adds value.

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 read-only capture tool, the description explains the output format (persistable JSON), the scope (ordinary/Return/Main tracks), and exclusions. It does not mention return schema or pagination, but none is required for this simple tool.

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 coverage is 100%, and the parameter description ('track-N from list_tracks, return-N from get_set_mixer, or master') is already complete. The description does not add extra meaning to trackId, so baseline 3 applies.

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 exactly what it does: captures an ordered list of top-level devices and exposed parameters as persistable JSON, with explicit exclusions. This distinguishes it from siblings like capture_track_state_snapshot (broader state) and capture_device_parameter_snapshot (single device).

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 clarifies scope by listing exclusions (hidden plugin state, samples, automation, nested devices, mappings), which implies when not to use it. However, it does not explicitly name alternative tools or provide a direct 'use when' vs 'use instead' comparison.

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