TimePRO MCP Server

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

With no annotations provided, the description carries full burden. It discloses that the tool creates a new entry (implying mutation) and returns an ID, which is helpful. However, it doesn't mention authentication requirements, rate limits, error conditions, or what happens if duplicate entries are attempted. For a creation tool with zero annotation coverage, this leaves significant behavioral gaps.

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 two concise sentences that are front-loaded with the core purpose. Every word earns its place: first sentence defines the action and required inputs, second sentence states the return value. No wasted words or redundancy.

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?

For a creation tool with 10 parameters, no annotations, and no output schema, the description is minimally adequate. It covers the basic purpose and return value, but lacks information about error handling, side effects, or system behavior that would be important for a mutation operation. The 100% schema coverage helps, but behavioral context is 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 description coverage is 100%, so the schema already documents all 10 parameters thoroughly. The description adds minimal value beyond the schema by listing required fields in natural language, but doesn't provide additional semantic context like format examples beyond what's in the schema descriptions. Baseline 3 is appropriate when 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 clearly states the action ('Create a new timesheet entry') and specifies the resource ('timesheet'), distinguishing it from siblings like delete_timesheet, update_timesheet, and get_timesheet. It explicitly mentions required fields (client, project, category, date, time range), which helps differentiate it from read-only siblings.

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 implies usage by stating required fields, but doesn't explicitly say when to use this tool versus alternatives like update_timesheet or get_timesheet_defaults. It mentions using list_clients, list_projects, and list_categories to find IDs, which provides some contextual guidance but doesn't define clear boundaries with sibling tools.

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