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famtong8-dev

W3 MCP FalkorDB Server

by famtong8-dev

falkordb_get_nodes

Read-onlyIdempotent

Retrieve node information from a FalkorDB graph. Optionally filter by label and get node IDs, labels, and properties.

Instructions

Get node information from a graph.

Retrieves nodes from the specified graph, optionally filtered by label. Returns node IDs, labels, and properties.

Args: params (GetNodesInput): Validated parameters: - graph (str): Graph name (required) - label (str): Optional node label filter - limit (int): Max nodes to return (1-1000, default: 10) - response_format (str): 'json' or 'markdown'

Returns: str: Formatted list of nodes with metadata

Errors: - Graph not found: "Graph 'xyz' does not exist" - Connection error: "Cannot connect to FalkorDB"

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
paramsYes

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior4/5

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

Annotations indicate readOnlyHint=true, destructiveHint=false, idempotentHint=true, and openWorldHint=true. The description confirms a read operation and adds error scenarios (graph not found, connection error), providing transparency beyond annotations.

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 well-structured with Args, Returns, and Errors sections. It conveys the necessary information without excessive length, though it could be slightly more concise.

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

Completeness4/5

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

The description covers the tool's purpose, parameters, return format, and potential errors. Given the annotations and output schema, it is sufficiently complete for a read-only tool.

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 description coverage is effectively high due to descriptions inside GetNodesInput. The description repeats these details but adds error message examples, offering some extra value.

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 tool retrieves node information from a graph with optional label filtering. The sibling tools list graphs and run queries, so this tool is well-differentiated.

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

Usage Guidelines4/5

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

The description explains when to use the tool (to get nodes from a graph) and provides parameter details like graph name and optional filters. It does not explicitly say when not to use, but the context suggests alternatives.

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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