MCP Kafka Schema Reg

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It states 'Update' implies a mutation, but fails to describe permissions needed, side effects, error conditions, or what the update entails (e.g., is it reversible, does it affect other data?). 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, direct sentence with no wasted words. It efficiently conveys the core action without unnecessary elaboration, making it easy to parse and understand at a glance.

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 (a mutation tool with 4 parameters, 0% schema coverage, no annotations, and no output schema), the description is insufficient. It lacks details on parameters, behavior, output, and differentiation from siblings, making it incomplete for effective tool selection and use.

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 0%, meaning none of the 4 parameters (subject, mode, context, registry) are documented in the schema. The description adds no information about what these parameters mean, their formats, allowed values, or how they interact, leaving them entirely unexplained.

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 the mode for a specific subject' clearly states the action (update) and target (mode for a subject), which is adequate. However, it doesn't distinguish this tool from similar siblings like 'update_mode' or 'get_subject_mode', leaving ambiguity about its specific role in the broader toolset.

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?

No guidance is provided on when to use this tool versus alternatives. With siblings like 'update_mode' and 'get_subject_mode' present, the description offers no context on prerequisites, differences, or appropriate scenarios for invocation, leaving the agent to infer usage.

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