Ebm Calculator

What it does

Example prompts

• “/ebm-calculator”

Requirements

• Python 3

Workflow steps

7 steps, taken from the first numbered list in SKILL.md.

1. 1Identify calculation mode: Determine mode from user request — diagnostic (sensitivity/specificity/PPV/NPV/LR), nnt (number needed to…
2. 2Collect required parameters
3. 3Validate inputs: Check that all counts are non-negative integers, rates are between 0 and 1, and denominators are not zero. If invalid…
4. 4Checkpoint: Display input summary to user for confirmation before computing results.
5. 5Compute results: Execute calculations per mode. Include interpretation string (e.g., "LR+ of 10 strongly rules in disease").
6. 6Output: Return structured JSON with computed metrics and interpretation.
7. 7Fallback: If a required parameter is missing, output a template showing which fields are needed with example values.

What it can do on your machine

Read from SKILL.md and the folder at commit 686e09d. It shows what the files ask for, not the result of running them.

• Tool permissions

  Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  Ships 1 file in scripts/ (Python), which the agent can run.

  Shell commands in SKILL.md call:

  • python

  From the folder's file list and the shell code blocks in SKILL.md.

• Network

  No URLs in SKILL.md.

  From URLs in SKILL.md, links to its own repository left out.

• Credentials

  Names no API keys, tokens, secrets or passwords.

  From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Ebm Calculator loads about 1.7k tokens when it runs, and up to ~1.8k if it reads all its reference files. Until then it costs about 42 tokens; SKILL.md has 738 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~42

When it runs · the whole SKILL.md, loaded when a task matches

~1.7k

With references · SKILL.md plus every file in references/, read only if the agent opens them

~1.8k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.

SKILL.md

The full file from aipoch/medical-research-skills at commit 686e09d, republished under its MIT licence (© aipoch). 738 words, ~1,697 tokens.

name

ebm-calculator

description

Evidence-Based Medicine diagnostic test calculator. Computes sensitivity, specificity, PPV, NPV, likelihood ratios, NNT, and pre/post-test probability.

license

MIT

author

AIPOCH

python -m py_compile scripts/main.py

python -m py_compile scripts/main.py
python scripts/main.py --help

{
  "sensitivity": "float",
  "specificity": "float",
  "ppv": "float",
  "npv": "float",
  "lr_positive": "float",
  "lr_negative": "float",
  "interpretation": "string"
}

© aipoch, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 4 other files (scripts, references) in scientific-skills/Other/ebm-calculator of aipoch/medical-research-skills.

• SKILL.md
• POLISH_CHANGELOG.md
• eval_report_ebm-calculator_result.json
• references/guidelines.md
• scripts/main.py

Open the folder on GitHubat commit 686e09d