setup_session

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

No annotations are provided, so the description carries the full burden. It discloses that tracks are created at the end of the existing list and returns a JSON summary, but does not cover edge cases like null parameters or error behavior, leaving gaps in transparency.

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 well-structured with a brief purpose sentence followed by a bulleted parameter list. It is slightly verbose but remains clear and front-loaded. Could be shortened slightly without losing information.

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 no output schema, the description mentions the return type (JSON summary). It covers all parameters and provides context like 'load via search_browser first' for instrument URIs. However, it lacks details on error handling or prerequisites, but remains fairly complete for a bootstrap 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?

The input schema has 0% description coverage, but the description provides detailed semantics for all three parameters: tempo format (BPM), time_signature array format, and tracks as a list of dicts with optional fields. This adds significant meaning beyond the bare schema.

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 bootstraps an Ableton session with tempo, time signature, and track creation in one round-trip. It distinguishes from sibling tools like set_tempo, set_time_signature, create_track, which perform individual actions.

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 emphasizes efficiency ('one round-trip') but does not explicitly state when to use this tool versus alternatives (e.g., for partial setups). It implies use for full session initialization, but lacks explicit when-not or alternative references.

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