TimeChimp MCP Server

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 but offers none. It doesn't mention that this is a mutation/write operation (implied by 'update' but not explicit), what permissions are required, whether changes are reversible, how partial updates are handled, or what the response looks like (no output schema). For a complex mutation tool with 17 parameters, this is a critical gap.

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 extremely concise at just three words ('Update an existing project'), which is front-loaded and wastes no space. For a tool where the schema provides extensive detail, this brevity is appropriate, though it may be too minimal given the lack of other guidance.

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 tool's complexity (17 parameters, nested objects, no annotations, no output schema), the description is insufficient. It doesn't address behavioral aspects like mutation effects, error handling, or response format, nor does it provide usage context. The schema covers parameters well, but the description fails to add necessary context for a mutation tool of this scale.

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% description coverage, thoroughly documenting all 17 parameters and their constraints (e.g., date formats, enum values, conditional usage). The description adds no parameter information beyond what's in the schema, so it meets the baseline of 3 where the schema does all the work, but doesn't compensate or add value.

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 project' clearly states the verb ('update') and resource ('project'), making the basic purpose understandable. However, it doesn't differentiate this tool from its sibling 'update_contact', 'update_customer', etc., beyond the resource name, and doesn't specify what aspects of a project can be updated beyond the generic term.

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 project ID), when not to use it (e.g., for creating projects, where 'create_project' exists), or how it differs from other update tools like 'update_user' or 'update_customer' beyond the resource type.

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