apply_cdl_from_file

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

With no annotations provided, the description carries the full burden of disclosing behavioral traits. It mentions the matching logic and metadata application but fails to describe side effects (e.g., overwriting existing CDL), idempotency, error handling, or required permissions. This is insufficient for a tool that modifies timeline clips.

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 relatively concise with three sentences and an Args section. It front-loads the main purpose and includes relevant matching details. Minor improvement could be removing the redundant mention of metadata application after the first sentence.

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 presence of an output schema (though not shown), the description adequately covers file parsing, matching methods, and metadata application. However, it lacks details on error conditions (e.g., file not found, no matching clips) and the exact return value, which would be needed for a fully comprehensive description.

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 only defines 'cdl_path' as a string. The description adds significant meaning by specifying the file must be .ccc or .edl and contain CDL data, which is not evident from the schema alone. However, it does not address path format (absolute/relative) or validation.

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 parses a CCC or EDL file and applies CDL values to matching timeline clips. It specifies the verb 'parse' and resource 'CDL file', and distinguishes from siblings like 'set_cdl' by focusing on file-based application.

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 explains that clips are matched by name using exact, no-extension, and fuzzy matching, and that metadata is applied if present. However, it does not provide any guidance on when to use this tool versus alternatives such as 'set_cdl' or 'apply_drx_grade', nor does it mention prerequisites or exclusions.

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