mcptix

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

With no annotations provided, the description carries the full burden of behavioral disclosure. 'Update' implies a mutation, but it doesn't disclose any behavioral traits such as required permissions, whether updates are partial or full, error handling, or side effects. This is a significant gap for a mutation tool with zero annotation coverage.

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, efficient sentence with zero waste. It's appropriately sized and front-loaded, making it easy to parse quickly. Every word earns its place without redundancy or unnecessary elaboration.

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 complexity (6 parameters including nested objects, no output schema, and no annotations), the description is incomplete. It doesn't address key aspects like what fields are updatable, how partial updates work, or what the tool returns. For a mutation tool with rich input schema but no annotations or output schema, this leaves significant gaps.

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 schema description coverage is 100%, so the schema already documents all 6 parameters thoroughly, including nested objects and enums. The description adds no additional meaning beyond what the schema provides (e.g., it doesn't explain parameter interactions or constraints). Baseline 3 is appropriate when the schema does the heavy lifting.

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 an existing ticket' clearly states the action (update) and resource (ticket), which is better than a tautology. However, it doesn't specify what aspects can be updated or differentiate this from sibling tools like 'add_comment' or 'create_ticket' beyond the basic verb. It's vague about scope and distinction.

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 provides no guidance on when to use this tool versus alternatives. It doesn't mention prerequisites (e.g., needing an existing ticket ID), when not to use it (e.g., for creating new tickets), or refer to sibling tools like 'create_ticket' or 'delete_ticket' for different operations. Usage is implied but not explicit.

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