langfuse-mcp-java

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

The description presents this as a read-only retrieval ('Returns...'), but annotations indicate destructiveHint=true and readOnlyHint=false, suggesting the tool modifies or deletes state. This is a direct contradiction. The description fails to explain what gets destroyed, why it is not idempotent, or the implications of openWorldHint=true.

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 three sentences with a logical flow: purpose, return fields, parameter requirement. However, the third sentence ('commentId is required') is redundant with the schema's required field designation, wasting space that could have explained the destructive behavior.

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?

It lists return fields (id, objectType, etc.), which is helpful since no output schema exists. However, given the destructive annotations and mutation hints, the description is dangerously incomplete—it does not explain the side effects, success/failure states, or what actually happens to the comment resource when invoked.

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?

With 100% schema coverage, the baseline is 3. The description repeats that commentId is required, which adds no semantic value beyond the schema. It does not provide format examples, validation rules, or explain how the ID is obtained.

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 states it 'Returns a single comment by its ID,' providing a clear verb and resource. However, this clarity is undermined by the destructiveHint=true and readOnlyHint=false annotations, which suggest mutation/deletion rather than simple retrieval, creating confusion about the actual purpose.

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 notes that commentId is required, but this merely duplicates the schema requirements. It provides no guidance on when to use get_comment versus the sibling get_comments (plural), nor does it explain why this specific 'get' operation has destructive properties while others do not.

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