Claude-skill-registry k-fencore

Name: k-fencore
Author: majiayu000

install

source · Clone the upstream repo

git clone https://github.com/majiayu000/claude-skill-registry

Claude Code · Install into ~/.claude/skills/

T=$(mktemp -d) && git clone --depth=1 https://github.com/majiayu000/claude-skill-registry "$T" && mkdir -p ~/.claude/skills && cp -r "$T/skills/data/k-fencore" ~/.claude/skills/majiayu000-claude-skill-registry-k-fencore && rm -rf "$T"

manifest: skills/data/k-fencore/SKILL.md

FenCore Library

FenCore is a pure logic library for WoW addons - no UI dependencies, just utility functions.

Design Philosophy

Pure Functions: No side effects, predictable outputs
No UI Dependencies: Works in any layer of your addon
Testable: All functions can be unit tested without WoW
Documented: Every function has clear input/output contracts

MCP Tools

Task	MCP Tool
List All Functions	`fencore.catalog()`
Search Functions	`fencore.search(query="clamp")`
Get Function Details	`fencore.info(domain="Math", function="Clamp")`

Domains

FenCore organizes functions by domain:

Domain	Purpose	Examples
Math	Numeric operations	`Clamp` , `Round` , `Lerp` , `InRange`
Table	Table manipulation	`Copy` , `Merge` , `Filter` , `Map`
String	String utilities	`Split` , `Trim` , `StartsWith` , `Format`
Color	Color manipulation	`HexToRGB` , `RGBToHex` , `Lighten` , `Darken`
Time	Time formatting	`FormatDuration` , `FormatTime` , `ParseDuration`
Environment	WoW detection	`IsRetail` , `IsClassic` , `GetExpansion`

Usage Pattern

local FenCore = LibStub("FenCore")

-- Access by domain
local Math = FenCore.Math
local result = Math.Clamp(value, 0, 100)

-- Or direct access
local clamped = FenCore.Math.Clamp(value, 0, 100)

Common Functions

Math

FenCore.Math.Clamp(value, min, max)     -- Constrain value to range
FenCore.Math.Round(value, decimals)      -- Round to decimal places
FenCore.Math.Lerp(a, b, t)              -- Linear interpolation
FenCore.Math.InRange(value, min, max)   -- Check if value in range

Table

FenCore.Table.Copy(tbl)                 -- Shallow copy
FenCore.Table.DeepCopy(tbl)             -- Deep copy
FenCore.Table.Merge(base, override)     -- Merge tables
FenCore.Table.Filter(tbl, predicate)    -- Filter by function
FenCore.Table.Map(tbl, transform)       -- Transform values

Environment

FenCore.Environment.IsRetail()          -- true if retail client
FenCore.Environment.IsClassic()         -- true if classic client
FenCore.Environment.GetExpansion()      -- "TWW", "Classic", etc.
FenCore.Environment.GetBuildInfo()      -- version, build, date

Best Practices

Use for Core layer - FenCore belongs in your addon's pure logic layer
Don't wrap unnecessarily - Call FenCore directly, don't create wrappers
Check domain first - Use
```
fencore.search
```
to find existing functions before writing your own
Prefer pure functions - If you need state, that belongs in Bridge layer