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JaviMaligno

langfuse-mcp-extended

listDatasetRuns

Retrieve a paginated list of all runs associated with a specific dataset for review or analysis.

Instructions

List all runs for a specific dataset.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
datasetNameYesName of the dataset to list runs from
pageNoPage number (1-indexed)
limitNoItems per page
Behavior2/5

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 only states 'List all runs' without specifying pagination behavior, whether deleted runs are included, or error handling (e.g., dataset not found). This leaves significant gaps for the agent.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single short sentence that efficiently conveys the core purpose. It is front-loaded but could benefit from a brief mention of pagination or scope without becoming verbose.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given no output schema and no annotations, the description is insufficient. It does not explain pagination behavior, result structure, or error conditions, which are important for a listing tool with three parameters.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100% with descriptive names (datasetName, page, limit) and descriptions. The tool description adds no additional meaning beyond what the schema already provides, meeting the baseline expectation.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the action ('List') and resource ('runs for a specific dataset'), distinguishing it from siblings like 'listDatasets' (which lists datasets) and 'getDatasetRun' (which retrieves a single run). The phrasing is direct and unambiguous.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description implies use when you need runs for a specific dataset, but it lacks explicit guidance on when to use this tool versus alternatives (e.g., if filtering or searching is needed, other tools might be more appropriate). No exclusions or when-not-to-use scenarios are mentioned.

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

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