Set map array element

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

With no annotations, the description should detail behavioral traits. It only says 'Write', implying mutation, but omits side effects, error handling, permission requirements, or any consequences. The behavior is minimally disclosed.

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 a single 13-word sentence, making it very concise. However, it sacrifices essential information, so the conciseness is not optimally balanced with completeness.

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 has 4 parameters, no output schema, and no annotations, the description is grossly incomplete. It fails to cover all parameters, lacks behavioral context, and does not explain the return value or side effects.

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 0%; the description mentions only 'name' and 'index' but ignores 'value' and 'instance'. It adds no meaning to the schema, leaving the agent to guess the role of each parameter.

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 action ('Write') and the resource ('element of a map-scope ACS array') with the key parameters (name and index). It implicitly distinguishes from sibling tools like get_map_array, but lacks explicit differentiation.

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?

No guidance on when to use this tool versus alternatives (e.g., get_map_array, set_map_var) or any context about prerequisites or constraints. The description simply states what it does without usage recommendations.

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