Swatch Ledger
Fabric shrinkage from a swatch wash test, and how much fabric to buy before washing.
Should I use this
Quality & Safety
Findings (1)
- LOWTool 'plan_fabric_length' description lacks action verbin plan_fabric_length
Based on automated analysis of tool definitions and protocol compliance.
Context Cost
This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.
Install
One-Click Install
Add this to your `claude_desktop_config.json` file:
{
"mcpServers": {
"swatch-ledger-mcp": {
"url": "https://swatch-ledger.pages.dev/mcp"
}
}
}Remote endpoints
https://swatch-ledger.pages.dev/mcpstreamable-httpWhat it can do
Tool inventory
Tools (2)
🟢measure_fabric_shrinkage(length_before, length_after, width_before, width_after, unit)
Calculates fabric shrinkage (or growth) from a swatch measured before and after washing and drying: length change along the selvedge, width change across the fabric, and the change in area. Use the same marked distances before and after, in one unit (cm or inches). Positive percentages are shrinkage, negative are growth.
Input Schema
{
"type": "object",
"properties": {
"length_before": {
"type": "number",
"description": "Marked length before washing (along the selvedge), greater than 0.",
"exclusiveMinimum": 0
},
"length_after": {
"type": "number",
"description": "The same marked length after washing and drying.",
"exclusiveMinimum": 0
},
"width_before": {
"type": "number",
"description": "Marked width before washing (across the fabric), greater than 0.",
"exclusiveMinimum": 0
},
"width_after": {
"type": "number",
"description": "The same marked width after washing and drying.",
"exclusiveMinimum": 0
},
"unit": {
"type": "string",
"enum": [
"cm",
"in"
],
"description": "Unit of the four measurements (only used to label the answer). Default cm."
}
},
"required": [
"length_before",
"length_after",
"width_before",
"width_after"
],
"additionalProperties": false
}🟢plan_fabric_length(usable_length, shrinkage_percent, extra_length, shop_increment, unit)
Works out how much fabric to buy before washing so that the usable length needed remains afterwards: required length = (usable length + extra) ÷ (1 − lengthwise shrinkage), then rounded up to the shop’s selling increment. Works in metres or yards (any one unit). A negative shrinkage rate means growth.
Input Schema
{
"type": "object",
"properties": {
"usable_length": {
"type": "number",
"description": "Length needed after washing (check the pattern layout), greater than 0.",
"exclusiveMinimum": 0
},
"shrinkage_percent": {
"type": "number",
"minimum": -100,
"exclusiveMaximum": 100,
"description": "Measured lengthwise shrinkage in percent, e.g. 5 for 5%. Negative means growth."
},
"extra_length": {
"type": "number",
"minimum": 0,
"description": "Optional extra usable length after washing (default 0). Do not count an allowance the pattern already includes."
},
"shop_increment": {
"type": "number",
"minimum": 0,
"description": "The shop’s selling increment to round up to, e.g. 0.25 for quarter metres or 0.125 for eighth yards. 0 for no rounding (default 0)."
},
"unit": {
"type": "string",
"enum": [
"m",
"yd"
],
"description": "Unit of the lengths (only used to label the answer). Default m."
}
},
"required": [
"usable_length",
"shrinkage_percent"
],
"additionalProperties": false
}Community
Evidence