s4h-probability-confidence-calibration

s4h-probability-confidence-calibration is a skill for Claude Code from human-avatar/skills-for-humanity. It costs 64 tokens per session (1,077 once invoked), scanned A, original, MIT.

A method for checking whether a stated confidence percentage matches the strength of the available evidence. It helps identify both overconfidence and excessive doubt.

In plain words
What is it for?
Use it to examine a specific claim, compare your confidence with the evidence, and adjust your certainty.
Why use it?
It removes the guesswork from deciding how certain to be. This helps prevent acting on weak evidence or delaying action when the evidence is strong enough.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: names the AskUserQuestion tool.

Part of the skills-for-humanity plugin — 197 skills, 1 hook shipped together

Good fit Use it to examine a specific claim, compare your confidence with the evidence, and adjust your certainty.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/human-avatar/skills-for-humanity/s4h-probability-confidence-calibration
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add human-avatar/skills-for-humanity --skill s4h-probability-confidence-calibration
Clone the repo
git clone --depth 1 https://github.com/human-avatar/skills-for-humanity

Made for: Claude Code.

Or install skills-for-humanity, the plugin that ships this one along with the rest of its 197 skills, 1 hook.

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.

agentmods badge for s4h-probability-confidence-calibration

README.md
[![agentmods](https://agentmods.dev/badge/skills/human-avatar/skills-for-humanity/s4h-probability-confidence-calibration/github.svg)](https://agentmods.dev/skills/human-avatar/skills-for-humanity/s4h-probability-confidence-calibration)
Your own site
<a href="https://agentmods.dev/skills/human-avatar/skills-for-humanity/s4h-probability-confidence-calibration"><img src="https://agentmods.dev/badge/skills/human-avatar/skills-for-humanity/s4h-probability-confidence-calibration/github.svg" alt="Measured on agentmods" height="20"></a>

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.

agentmods 80×15 button for s4h-probability-confidence-calibration

Your own site · 80×15
<a href="https://agentmods.dev/skills/human-avatar/skills-for-humanity/s4h-probability-confidence-calibration"><img src="https://agentmods.dev/badge/skills/human-avatar/skills-for-humanity/s4h-probability-confidence-calibration.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 64 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,077 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. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Excessive Agency · line 30
    Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.
    Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
How audits are shown
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 $0.00064 $0.01077
Opus 5 $0.00032 $0.00539
Sonnet 5 $0.00013 $0.00215
Haiku 4.5 $0.00006 $0.00108

Measured 9d ago against content hash 9ef2425ee003, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

s4h-probability-confidence-calibration 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.

skills/s4h-probability-confidence-calibration/SKILL.md · 97 lines

How it starts

The opening of the file, as written. The whole thing — 97 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Probability Confidence Calibration

Overconfidence is the most documented and costly bias in judgment. People who say they are 90% confident are right far less than 90% of the time. But underconfidence is also costly — excessive hedging prevents commitment and action when evidence is actually sufficient. Calibration is not about being less confident; it is about having confidence levels that match the available evidence.


Your Process

Step 1: State the Claim and Current Confidence Name the specific claim — not a vague domain but a specific, falsifiable statement — and state the current confidence level as a percentage.

Framing check: Confirm the specific claim and confidence level before continuing. State what you've identified — the actual claim being evaluated and its stated confidence percentage — in one sentence, then use AskUserQuestion:

  • Question: "I'm reading this as: [your one-sentence framing of the specific claim and confidence level, e.g. 'You believe X with 85% confidence and want to know if that's calibrated to the evidence']. Is that right?"
  • Header: "Framing"
  • Options:
    • Yes — proceed — framing is correct
    • Adjust — one element is off; user will correct it before you continue
    • Reframe — different situation than read; incorporate the correction before proceeding

Step 2: Audit Supporting Evidence List the evidence supporting the claim. For each piece: classify its strength:

  • Direct observation: you or a trusted source directly witnessed this
  • Inference: logical or empirical inference from other data
  • Anecdote: one or a few cases, not systematic
  • Assumption: believed without verification

Step 3: List Counter-Evidence and Gaps What evidence exists against the claim? What would you expect to see if the claim were true that you do not see? What have you not checked that bears on the claim?

Step 4: Identify the Most Likely Failure Mode If this claim is wrong, what is the most probable reason? Is that failure mode being appropriately weighted in the current confidence assessment, or is it being minimized?

Read the full file on GitHub · 97 lines

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 · 97 lines · 64 tokens per session scan A 9ef2425ee003

Subscribe to this mod's changes

s4h-probability-confidence-calibration is a skill published in the GitHub repository human-avatar/skills-for-humanity (223 stars, last pushed 1mo ago), licensed MIT. It adds 64 tokens to every session and 1,077 once invoked, about $0.0003 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 2026-09-03.

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