langfuse-mcp-java

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

Description claims 'Read-only' but annotations explicitly declare 'readOnlyHint: false' and 'destructiveHint: true'. This is a direct contradiction that misrepresents the tool's safety profile and side effects.

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?

Extremely concise at two sentences. However, the second sentence ('Read-only.') is factually incorrect based on annotations, meaning not every sentence earns its place constructively.

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 destructive annotation contradicting the 'get' naming, the description fails to explain what side effects occur or why it is marked destructive. No output schema exists, yet the description does not characterize the return value.

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 mentions 'by name' which aligns with the schema's 'exact match' description but adds no additional semantic context about the parameter format or constraints beyond what the schema already provides.

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?

States specific action (Get) and resource (Langfuse dataset) with lookup method (by name). However, it does not explicitly differentiate from sibling 'list_datasets' or 'get_dataset_item'.

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?

Provides no guidance on when to use this specific lookup versus 'list_datasets' or how it relates to the dataset lifecycle. No prerequisites or conditions mentioned.

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