TimeChimp MCP Server

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

With no annotations, the description carries full burden but provides limited behavioral insight. It mentions 'external approval/invoicing status' which hints at business workflow context, but doesn't disclose permission requirements, whether this is a destructive operation, rate limits, or what happens when updating multiple entries. The mutation nature ('Update') is clear but lacks operational details.

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 that front-loads the core purpose. Every word earns its place - 'Update', 'client status', 'mileage entries', and the parenthetical clarification about external approval/invoicing status all contribute essential information without 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 mutation tool with 3 parameters, no annotations, and no output schema, the description is insufficient. It doesn't explain what the tool returns, error conditions, permission requirements, or how it differs from similar update tools. The 100% schema coverage helps, but the description itself lacks completeness for safe and effective tool invocation.

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 parameters are well-documented in the schema. The description adds marginal value by emphasizing the client portal context for clientStatus and implying bulk updates ('mileage entries'), but doesn't provide additional semantics beyond what the schema already specifies about parameter purposes and constraints.

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 ('Update') and target ('client status of mileage entries'), with specific context about external approval/invoicing status. It distinguishes from sibling 'update_mileage_status' by focusing on client-specific status rather than general mileage status, though it doesn't explicitly name this 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 minimal guidance - it mentions client portal context but doesn't specify when to use this tool versus alternatives like 'update_mileage_status' or 'update_mileage'. No prerequisites, exclusions, or explicit comparison to sibling tools are provided.

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