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trmnl_remove_fleet_master

DestructiveIdempotent

Removes the master device from a TRMNL fleet, leaving mirrors intact but preventing pushes until a new master is set. Use to decommission or replace a fleet master.

Instructions

Remove the master device The fleet keeps its mirrors but cannot push until a new master is set. TRMNL DELETE /api/apps/fleet/{installation_id}/master. Changes remote state or starts work. Run only within the user-authorized scope.

Input Schema

NameRequiredDescriptionDefault
pathYes
profileNoConfigured profile name; defaults to default.

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.2.1

TDQS

A3.7/5.0
Behavior4/5

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

Annotations already declare destructive=true, idempotent=true and openWorld=true, so the safety profile is known. The description adds real value beyond them: the fleet keeps its mirrors but stops pushing until a new master is set, which is exactly the operational consequence an agent needs to warn about.

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?

Front-loaded with the action and its consequence in two short sentences. The raw endpoint line and the boilerplate 'Changes remote state or starts work' are filler that could be trimmed.

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?

For a destructive, idempotent, no-output-schema operation, the description supplies the missing piece — the post-removal fleet behavior — and annotations cover the risk profile. Only the profile parameter's role and any permission requirements remain undetailed.

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 50%; installation_id is documented in the schema and profile carries a default note, so the description neither adds nor withholds much. It contributes nothing about the nested path object or the profile selector, so it is baseline-adequate rather than compensating.

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?

States a specific verb and resource ('Remove the master device') and immediately describes the resulting fleet state, which lets an agent distinguish it from set_fleet_master. The sibling alternative is implied ('until a new master is set') rather than named.

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 consequence sentence implies when this is appropriate (decommissioning the current master), but there is no explicit when-not guidance or named alternative tool. The closing line 'Run only within the user-authorized scope' is generic boilerplate rather than usable routing guidance.

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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