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stop_auto_send

Stops a repeating serial send on a specified port so you can halt ongoing command loops and regain control of the device.

Instructions

Stop the repeating send.

Input Schema

NameRequiredDescriptionDefault
portYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observed

TDQS

C2.4/5.0
Behavior2/5

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

No annotations are provided, so the description must carry the full behavioral burden. It says 'Stop' but does not disclose whether the stop is immediate, whether it affects one port or all ports, whether the operation is idempotent, or what happens if no repeating send is active.

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, front-loaded sentence with no wasted words. However, it is so terse that it omits nearly all operational context, making it minimally viable rather than well-structured for a mutation tool.

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?

With no annotations, no output schema, and 0% parameter description coverage, the description is far too thin for a tool requiring a port argument. An agent cannot determine the required port semantics, side effects, failure modes, or relationship to start_auto_send from this definition alone.

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%, and the sole parameter 'port' is documented only as a string with no explanation. The description does not mention the port parameter or explain whether it identifies the serial port whose auto-send should be stopped.

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 states a specific verb, 'Stop,' and names the resource as 'the repeating send,' which is clear enough to identify the tool's action. It does not explicitly distinguish itself from the sibling start_auto_send or clarify that 'repeating send' is the same as auto-send, but the core purpose is understandable.

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 gives no indication of when to use this tool versus alternatives such as send_serial_data or start_auto_send. It does not mention prerequisites like an active auto-send session or conditions under which stopping is appropriate.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.