Financial News and Notes MCP Server

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

No annotations are provided, so the description must fully disclose behavioral traits. However, it adds no information about what the tool does, whether it's read-only or destructive, authentication needs, rate limits, or any other behavioral aspects. This leaves the agent completely in the dark about the tool's operation.

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?

While the description is concise with only three words, it is under-specified rather than efficiently informative. It fails to front-load essential information, wasting its limited content on a tautology that provides no value to the agent.

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 tool with no annotations and no output schema, the description is completely inadequate. It does not explain what the tool does, how to use it, what behavior to expect, or what it returns, leaving significant gaps in understanding despite the simple parameter schema.

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%, with the single parameter 'message' documented as 'Message to process'. The description does not add any meaning beyond this, such as explaining what 'process' entails or providing examples. Given the high schema coverage, a baseline score of 3 is appropriate as the schema carries the burden.

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 'FileHandler tool description' is a tautology that merely restates the tool name without specifying what action it performs or what resource it handles. It provides no verb or specific purpose, making it impossible to distinguish from sibling tools like 'api-client' or 'data-processor'.

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 offers no guidance on when to use this tool versus alternatives. It does not mention any context, prerequisites, or exclusions, leaving the agent with no information to make an informed choice among the sibling tools listed.

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