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kskwon02

node-red-mcp

by kskwon02

Patch Flow

node-red-flows-patch

Apply JSON patch operations to modify a Node-RED flow tab. Update nodes and connections using standard JSON patch format.

Instructions

Apply JSON patch operations to a flow tab

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
idYes
operationsYes
expectedRevNo
Behavior2/5

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

Without annotations, the description must carry the burden of behavioral disclosure. It mentions 'Apply JSON patch operations' implying modification, but lacks details on authorization, side effects, error conditions, or the specific JSON Patch standard (RFC 6902). This is insufficient for safe invocation.

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

Conciseness3/5

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

The description is a single sentence, which is concise, but it is under-specified. It lacks essential details, making it less effective. It earns a mid-range score for brevity but loses points for missing content.

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

Completeness1/5

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

Given the tool's complexity (JSON patch operations, revision handling) and lack of output schema, the description fails to explain return values, error handling, or behavioral expectations. It is not sufficiently complete for an agent to use correctly.

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

Parameters1/5

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

Schema description coverage is 0%, so the description must compensate by explaining parameters. It provides no information about 'id', 'operations', or 'expectedRev', leaving the agent to guess their meanings and constraints.

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

Purpose4/5

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

The description clearly states the tool applies JSON patch operations to a flow tab, which is a specific action. It distinguishes from sibling tools like 'node-red-flows-update' by implying partial updates via patch. However, it could be more explicit about the difference between patch and update.

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

Usage Guidelines2/5

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

No guidance is provided on when to use this tool versus alternatives like 'node-red-flows-update' or 'node-red-flows-create'. The description only states what it does without contextual usage advice.

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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