Create custom field

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

The description adds no behavioral context beyond the annotations. It does not mention side effects, required permissions, idempotency implications, or what happens on success. The endpoint detail is minor and does not clarify behavioral traits. Annotations already indicate readOnlyHint=false, but the description fails to elaborate on the write nature.

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 wastes words by repeating the same idea: 'Create custom field. Creates a custom field.' This redundancy makes it less concise. A single sentence with the endpoint would be sufficient.

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?

Despite having annotations and complete parameter descriptions, the description is too thin. For a create operation with no output schema, it should at least hint at the response (e.g., returns the created field) or mention any side effects. The missing return value information and lack of behavioral context make it incomplete.

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 100% with both parameters ('name' and 'admin_only') having descriptions. The tool description adds no parameter-specific information, so the baseline of 3 applies. No extra meaning is provided beyond the structured 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 verb 'create' and resource 'custom field', which distinguishes it from sibling tools like updateCustomField, listCustomFields, and deleteCustomField. The endpoint reference adds specificity, but the repetition of 'Create custom field' and 'Creates a custom field' is redundant.

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 is provided on when to use this tool versus alternatives such as updateCustomField or deleteCustomField. The description only states the action without any context about prerequisites, use cases, or exclusions.

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