update_item_field

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

No annotations are provided, and the description only mentions the action. It does not disclose side effects (e.g., whether overwrites existing value, whether it triggers notifications), permissions required, or idempotency. The behavioral burden falls entirely on the description, which is insufficient.

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, clear sentence with no extraneous information. It is concise and front-loaded, but could integrate more context without becoming verbose.

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 there is no output schema and no annotations, the description should compensate with richer behavioral context. However, it only provides a minimal statement. For a mutation tool, details like idempotency, confirmation steps, or error handling are missing.

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 100%, meaning all 4 parameters are documented in the input schema. The description does not add additional semantic meaning beyond what the schema already provides, so baseline score of 3 is appropriate.

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 tool name 'update_item_field' and description 'Update a field value on an item in a GitHub Project V2' clearly specify the action (update), target (field value on an item), and platform (GitHub Project V2). It is distinct from sibling tools like 'create_field' and 'update_field'.

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 description states what the tool does but does not explicitly guide when to use it versus alternatives (e.g., 'update_field' updates a project field definition, not an item's field value). No exclusion criteria or prerequisite context are provided.

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