run_action

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

No annotations are provided, so the description carries the full behavioral burden. It says what the tool does but does not disclose that arbitrary REAPER actions may mutate project state, can be destructive, require a valid command ID, or affect undo history. Behavioral context is largely absent.

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 brief sentences with a terse Args note. It front-loads the main action and then defines the parameter without filler.

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 generic action executor with no annotations, no output schema, and 0% schema description coverage, the description is too sparse. It omits return behavior, side effects, and safe-usage context needed for invoking an arbitrary REAPER action.

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 0%, and the schema only types action_id as an integer. The description adds 'REAPER action/command ID number', clarifying meaning beyond the raw type, but it does not explain how to obtain the ID, valid ranges, or format. It provides some compensation but remains incomplete.

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 a specific verb ('Run') and resource ('REAPER action') and adds the scope 'by command ID', which distinguishes it from sibling run_action_by_name. An agent can identify the tool's function without opening the schema.

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 phrase 'by command ID' implies the alternative is run_action_by_name, but the description does not explicitly say when to use this tool versus that one or any prerequisites. Usage is implied rather than directly stated.

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