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supcon-international

@supcon-international/node-red-mcp-server

update-flow

Update an existing Node-RED flow configuration by providing its ID and a new flow JSON definition.

Instructions

Updates the configuration of a specific flow by its id. Args: id (e.g.'396c237c693dc') flowJson (e.g.'{id: '91ad456e52b8', label: 'Sheet 1', nodes: [], configs: []}')

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
idYesFlow ID
flowJsonYesFlow configuration in JSON
Behavior2/5

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

No annotations are provided, so the description carries full burden. It only says 'Updates the configuration' and gives examples, but does not mention side effects, idempotency, authorization needs, or rate limits.

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 concise with two sentences and examples. It is front-loaded with the purpose. The example formatting is slightly messy but acceptable.

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

Completeness3/5

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

The tool has only 2 parameters and no output schema. The description covers the input but does not mention the return value or any error conditions. Reasonably complete for a simple update, but could be improved.

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

Parameters4/5

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

The schema descriptions are minimal ('Flow ID', 'Flow configuration in JSON'), but the description adds concrete examples that clarify the format, going beyond the schema. However, it could still provide more semantic detail.

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 it updates the configuration of a specific flow by its id, which is a specific verb+resource. This distinguishes it from sibling tools like create-flow, delete-flow, and update-flows.

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 update-flows. There is no mention of constraints, prerequisites, or exclusions.

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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