twprojects-update_custom_field

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

Annotations only include a title, so the description carries full burden. It indicates mutation ('update') but does not disclose whether updates are partial or full replacement, side effects of modifying options, or any behavioral characteristics beyond the schema.

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 single-sentence description is concise and front-loaded with the core action. While it could include more context, it avoids unnecessary verbiage.

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?

With 8 parameters, no output schema, and minimal annotations, the description fails to give a full picture. It does not explain return values, partial update behavior, or any constraints beyond the schema, making it incomplete for complex usage.

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 has 100% coverage with descriptions for all 8 parameters, so the schema itself provides meaning. The description adds no extra semantic value, meeting the baseline of 3.

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 'Update custom field' clearly states the action and resource, distinguishing it from sibling tools that update other entities (e.g., project, task). However, it lacks specificity about what aspects can be updated, which is partially covered by 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?

No guidance is provided on when to use this tool versus alternatives, nor are there prerequisites or exclusions. For instance, there is no mention of whether updating a custom field requires certain permissions or if there are constraints on changing field types.

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