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Colour Memory

by app.railway.up.colour-memory-api-production
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Assess Cultural Risk of a Colour or Palette

colour_cultural_risk
Read-only

Cultural risk assessment for a hex value or palette (symbolic weight, regional taboos, religious associations, market flags). This is one component of colour_passport for single colours. Use colour_passport for a general profile; call this directly for palette-level risk checks or when cultural risk is the only thing being asked about.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
hexNoSingle hex value to assess e.g. '#FF9900'
marketsNoOptional market focus e.g. ['China', 'Middle East', 'India']
paletteNoOptional list of hex values to assess as a palette

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changed
    • changedOutput schema / (root)
      Previous value: -nullNew value: +{
+  "additionalProperties": true,
+  "description": "Structured JSON response. Shape varies by tool; most return an 'ok' boolean plus a 'result' or 'results' field with the tool's data payload.",
+  "type": "object"
+}
  2. Changed1 schema field changed
    • changedOutput schema / (root)
      Previous value: -{
-  "properties": {
-    "error": {
-      "type": "string"
-    },
-    "ok": {
-      "type": "boolean"
-    },
-    "result": {
-      "type": [
-        "object",
-        "array",
-        "string",
-        "null"
-      ]
-    }
-  },
-  "type": "object"
-}New value: +null
  3. Added

TDQS

A4.5/5.0
Behavior4/5

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

Annotations already declare readOnlyHint=true. The description adds context beyond annotations by explaining the tool handles both hex and palette inputs and that it serves as a component of colour_passport. No contradictions, and it clarifies scope without needing to restate safety since annotations cover that.

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 sentences, front-loaded with purpose, then a concise usage comparison. Every sentence carries meaning with zero filler.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the readOnly annotation, output schema, and full parameter coverage, the description sufficiently addresses what the tool does, when to use it, and how it relates to colour_passport. It is complete for an agent to select this tool among many colour-related siblings.

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 descriptions cover all 3 parameters at 100%, so the baseline is 3. The description connects 'hex value or palette' to the hex/palette parameters but does not add per-parameter syntax or nuance beyond what the schema already provides.

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 clearly states the tool assesses cultural risk for a hex value or palette, enumerating specific dimensions (symbolic weight, taboos, religious associations, market flags). It explicitly distinguishes itself from colour_passport by positioning as a component and direct-call for palette-level risk checks.

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

Usage Guidelines5/5

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

Provides explicit guidance: 'Use colour_passport for a general profile; call this directly for palette-level risk checks or when cultural risk is the only thing being asked about.' This names an alternative and gives concrete decision criteria.

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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