# Fragility Measurement

> Compute a fragility index from flip-point distances and degradation scores, summarizing how robust the conclusion is.

- Skill: `yogsoth-ai/fragility-measurement` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add yogsoth-ai/fragility-measurement`
- Raw SKILL.md: https://api.skillmd.com/api/skills/yogsoth-ai/fragility-measurement/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: yogsoth-ai (https://skillmd.com/u/yogsoth-ai)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/yogsoth-ai/fragility-measurement

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# Fragility Measurement

Aggregates flip-point distances and degradation scores into a single fragility index.

## Execution

Subagent — spawned via subagent-spawning/spawn-agent.

## Why Subagent

Fragility computation requires synthesizing results from multiple ablation and flip-point tests into a coherent assessment.

## Input

- **flip_points**: List of {dimension, distance, confidence}
- **degradation_scores**: List of {factor, score, classification}
- **factor_count**: Total factors examined

## Output

- **fragility_index**: Overall fragility (0.0 = robust, 1.0 = extremely fragile)
- **most_fragile_dimension**: Where the conclusion is most vulnerable
- **robustness_assessment**: Qualitative summary
- **recommendations**: What to investigate further

## Budget

One unit = one aggregation per campaign run.

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## Available SOPs

Optional, no fixed order; the final leaf is always a sop.

| SOP | When to use |
| --- | --- |
| spawn-agent | Spawn a customized CC subagent with full MCP tool access. Used by SOPs that declare execution: subagent. |

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