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qrcow

qr-cow MCP server

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by qrcow

delete_qrcode

Delete a QR code, causing future scans to return 404. Use this to remove unwanted codes and manage your QR code inventory.

Instructions

Soft-delete a QR code. Scans afterwards return 404.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
idYes
Behavior4/5

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

With no annotations, the description carries the full burden. It discloses the soft-delete nature and the 404 behavior, which are key behavioral traits. It does not mention reversibility, authorization, or side effects on analytics, but it provides meaningful context beyond the name.

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?

Two short sentences, front-loaded with the action and followed by a concrete behavioral consequence. Every word adds value; no filler or redundancy.

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?

For a simple delete tool, the description covers the primary action and effect. However, it lacks details on error cases (e.g., non-existent ID), recoverability, or impact on related data like analytics, which could be important given the sibling analytics tool. The description is adequate but not complete.

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 only parameter 'id' is not explained in the description, and the schema has no description for it. The tool name implies it is the QR code ID, but the description provides no explicit clarification, leaving the parameter semantics under-specified.

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 uses a specific verb (soft-delete) and resource (QR code), and the behavioral effect (scans return 404) clarifies the scope. This clearly distinguishes it from siblings like update or render tools.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description implies when to use this tool (to remove a QR code from active use) and clearly states the consequence (404 on scans). However, it does not explicitly mention alternatives or when not to use it, leaving some room for ambiguity.

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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