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TrackLine
by TrackLine

nodes_update

Modify configuration parameters for existing VPN nodes in the Remnawave panel, including network settings, traffic limits, and monitoring preferences.

Instructions

Update an existing node

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
uuidYesNode UUID to update
nameNoNew node name
addressNoNew address
portNoNew port
countryCodeNoNew country code
isTrafficTrackingActiveNoEnable/disable traffic tracking
trafficLimitBytesNoNew traffic limit
trafficResetDayNoNew traffic reset day
notifyPercentNoNew notification threshold
consumptionMultiplierNoNew consumption multiplier

Implementation Reference

  • Registration and handler implementation for the 'nodes_update' MCP tool.
    server.tool(
        'nodes_update',
        'Update an existing node',
        {
            uuid: z.string().describe('Node UUID to update'),
            name: z.string().optional().describe('New node name'),
            address: z.string().optional().describe('New address'),
            port: z.number().optional().describe('New port'),
            countryCode: z.string().optional().describe('New country code'),
            isTrafficTrackingActive: z
                .boolean()
                .optional()
                .describe('Enable/disable traffic tracking'),
            trafficLimitBytes: z
                .number()
                .optional()
                .describe('New traffic limit'),
            trafficResetDay: z
                .number()
                .optional()
                .describe('New traffic reset day'),
            notifyPercent: z
                .number()
                .optional()
                .describe('New notification threshold'),
            consumptionMultiplier: z
                .number()
                .optional()
                .describe('New consumption multiplier'),
        },
        async (params) => {
            try {
                const result = await client.updateNode(params);
                return toolResult(result);
            } catch (e) {
                return toolError(e);
            }
        },
    );
Behavior2/5

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

With no annotations provided, the description carries full burden for behavioral disclosure. It states this is an update operation but doesn't mention whether it requires specific permissions, if changes are reversible, what happens to unspecified fields, or potential side effects. This is inadequate for a mutation tool with zero annotation coverage.

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

Conciseness5/5

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

The description is a single, efficient sentence that communicates the core purpose without any wasted words. It's appropriately sized and front-loaded, making it easy for an agent to parse quickly.

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?

For a mutation tool with 10 parameters, no annotations, and no output schema, the description is insufficient. It doesn't explain what 'update' entails operationally, what values are returned, or how errors are handled. The agent lacks critical context for safe and effective use.

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 100%, so the schema fully documents all 10 parameters. The description adds no additional parameter information beyond what's in the schema, meeting the baseline score of 3 for high schema coverage without extra value.

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 action ('Update') and resource ('an existing node'), making the purpose immediately understandable. It doesn't distinguish from sibling tools like 'nodes_create' or 'nodes_delete', but it's not misleading or tautological.

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?

The description provides no guidance on when to use this tool versus alternatives like 'nodes_create' for new nodes or 'nodes_disable' for deactivation. There's no mention of prerequisites, context, or exclusions, leaving the agent to infer usage from the tool name alone.

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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