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trmnl_create_device_log

Creates a TRMNL device log by posting an array of log entries, enabling you to record diagnostics and activity from your display.

Instructions

Log with logs[] (array) TRMNL POST /api/log. Changes remote state or starts work. Run only within the user-authorized scope.

Input Schema

NameRequiredDescriptionDefault
bodyYes
profileNoConfigured profile name; defaults to default.

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.2.1

TDQS

C2.6/5.0
Behavior3/5

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

Annotations already declare readOnlyHint=false, openWorldHint=true, idempotentHint=false, and destructiveHint=false, so the description does not need to restate safety. It adds some value by noting remote state changes and the user-authorized scope, but it does not explain what state changes, how logs are consumed, or whether the call has side effects beyond logging.

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 short and contains no obvious filler, but it is structured as fragments rather than a clear sentence. The key endpoint is present, yet the opening "Log with logs[] (array)" is awkward and does not front-load the tool's actual purpose.

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 a nested required body object and no output schema, the description is incomplete. It does not explain expected log payload structure, response behavior, or how the tool relates to sibling log-reading tools, leaving significant gaps beyond what annotations provide.

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

Parameters2/5

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

The schema has 50% description coverage, with only the profile parameter documented. The body.logs array is required but its item schema is empty, and the description only repeats "logs[] (array)" without describing the expected log entry shape or required fields.

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

Purpose3/5

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

The description identifies a POST to /api/log and mentions a logs[] array, so the agent can infer it creates device log entries. However, "Log with logs[] (array)" is fragmented and does not clearly state the verb+resource, and sibling differentiation from trmnl_get_device_logs is only implicit through the POST endpoint.

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 only guidance is generic: "Changes remote state or starts work. Run only within the user-authorized scope." It does not say when to use this versus trmnl_get_device_logs or other device/debug-log tools, nor does it state 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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