nsforge-mcp: Skill for Claude Code

.claude/skills/nsforge-verification-suite/SKILL.md

nsforge-verification-suite is a skill for Claude Code from u9401066/nsforge-mcp. It costs 30 tokens per session (655 once invoked), scanned A, original, Apache-2.0.

A collection of checks for verifying mathematical expressions and their units. It can compare formulas, check derivatives, integrals, and equation solutions, and perform dimensional analysis, which tests whether physical units are compatible.

In plain words
What is it for?
Use it to verify symbolic equivalence, derivatives, integrals, and solutions, or to check dimensions in physics, pharmacokinetics, and thermodynamics formulas.
Why use it?
It catches algebra mistakes and unit mismatches that may otherwise produce plausible-looking but incorrect results.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

This is u9401066/nsforge-mcp's own configuration. It tells Claude Code how to work on nsforge-mcp itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything nsforge-mcp configures →

Reuse

Borrowing it

Nothing to install: this file belongs to u9401066/nsforge-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/u9401066/nsforge-mcp/master/.claude/skills/nsforge-verification-suite/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/u9401066/nsforge-mcp

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

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README.md
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Your own site
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Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

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Your own site · 80×15
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Per session 30 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 655 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00030 $0.00655
Opus 5 $0.00015 $0.00328
Sonnet 5 $0.00006 $0.00131
Haiku 4.5 $0.00003 $0.00065

Measured 9d ago against content hash adb7534004e2, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

nsforge-verification-suite scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude/skills/nsforge-verification-suite/SKILL.md · 60 lines

What it actually says

驗證工具 Skill

⚠️ 驗證後必須向用戶展示結果!

  • 驗證成功/失敗都要清楚告知用戶
  • 維度分析結果要用人類可讀格式展示

工具速查

驗證類型 工具 參數
符號等價 symbolic_equal(expr1, expr2) 兩表達式
導數驗證 verify_derivative(original, claimed, var) 原式、宣稱導數、變數
積分驗證 verify_integral(original, claimed, var) 被積函數、宣稱積分、變數
解驗證 verify_solution(equation, solution, var) 方程、解、變數
維度分析 check_dimensions(expr, units_map) 表達式、單位映射

調用範例

# 符號等價
symbolic_equal("(x+1)**2", "x**2 + 2*x + 1")  # → True

# 導數驗證:d/dx[ln(x²)] = 2/x ?
verify_derivative("ln(x**2)", "2/x", "x")  # → correct: True

# 積分驗證:∫sin(x)dx = -cos(x) ?
verify_integral("sin(x)", "-cos(x)", "x")  # → correct: True

# 解驗證:x=2 是 x²-4=0 的解?
verify_solution("x**2 - 4", "2", "x")  # → correct: True

# 維度分析
check_dimensions("m * a", {"m": "kg", "a": "m/s**2"})
# → dimension: [mass]*[length]/[time]**2 = Force

常用單位映射

# 力學
{"F": "N", "m": "kg", "a": "m/s**2", "v": "m/s", "t": "s"}

# 藥動學
{"C": "mg/L", "V": "L", "k": "1/h", "t": "h", "D": "mg"}

# 熱力學
{"T": "K", "E": "J", "R": "J/(mol*K)", "n": "mol"}

驗證順序建議

  1. 維度分析 - 維度錯,結果必錯
  2. 符號驗證 - 代數正確性
  3. 數值抽樣 - 特殊情況
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 9d ago First seen · 60 lines · 30 tokens per session scan A adb7534004e2

Subscribe to this mod's changes

nsforge-verification-suite is a skill published in the GitHub repository u9401066/nsforge-mcp (4 stars, last pushed 9d ago), licensed Apache-2.0. It adds 30 tokens to every session and 655 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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