add_mass_config_trait

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

No annotations provided, so description carries full load. It accurately describes append-only behavior, no replacement, and error-on-duplicate. Could mention lack of side effects on other traits or permission requirements, but addresses key behavioral traits for safe usage.

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?

Description is concise (under 150 words) and well-structured with a title, a safety note, an error condition, and a clear Args section. No superfluous content, though the safety line could be integrated into usage guidance without loss.

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 tool's moderate complexity (add trait to config) and presence of output schema (not detailed but reduces need to explain return), the description covers all essential aspects: operation, parameters, safety, and error scenario. Could mention what happens on success (e.g., returns updated config), but not required.

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?

With 0% schema description coverage, the description explains parameter meaning beyond schema: asset_path as path to config, trait_class as full class path with examples, and properties as optional dict with supported types and example. This compensates fully for schema gaps.

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 verb 'Add a SINGLE trait to a Mass Entity Config' and specifies it operates on a config without replacing existing traits. It distinguishes from siblings like 'set_mass_config_trait_property' (which modifies existing traits) and 'remove_mass_config_trait' (which removes).

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?

Provides explicit when-not-to-use: 'Returns error if the trait already exists' and safety reassurance: 'Safe for configs with complex replicator settings — only appends, never replaces.' Implicitly advises against using if trait already exists, directing users to alternative or checks.

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