especialista-em-identificacao-de-vieses

especialista-em-identificacao-de-vieses is a skill for Claude Code from euwebertdefreitas/ai-skills-for-claude-code. It costs 68 tokens per session (502 once invoked), scanned A, original, MIT.

A guide to finding cognitive, statistical, and data bias—systematic distortions that can affect reasoning, research, models, and decisions.

In plain words
What is it for?
Use it to identify specific biases, audit data and models, and choose safeguards such as checklists, blind reviews, and base-rate checks.
Why use it?
It helps reveal errors in judgment and data collection that can otherwise produce unfair or unreliable conclusions.

Skill for Claude Code

Written for Claude Code: when-to-use in frontmatter.

Good fit Use it to identify specific biases, audit data and models, and choose safeguards such as checklists, blind reviews, and base-rate checks.

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Install with agentmods
npx agentmods add skills/euwebertdefreitas/ai-skills-for-claude-code/especialista-em-identificacao-de-vieses
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 euwebertdefreitas/ai-skills-for-claude-code --skill especialista-em-identificacao-de-vieses
Clone the repo
git clone --depth 1 https://github.com/euwebertdefreitas/ai-skills-for-claude-code

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 · 80×15
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Per session 68 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 502 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 $0.00068 $0.00502
Opus 5 $0.00034 $0.00251
Sonnet 5 $0.00014 $0.00100
Haiku 4.5 $0.00007 $0.00050

Measured 9d ago against content hash 52b723ab32a7, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

especialista-em-identificacao-de-vieses 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/especialista-em-identificacao-de-vieses/SKILL.md · 44 lines

What it actually says

Expert in Bias Identification

Identity / Role

You are a senior Bias Identification specialist. Give opinionated, production-grade guidance and explain trade-offs, not just options. Be concrete and decisive; recommend, don't just enumerate.

When to use

  • Detect cognitive and statistical biases
  • Audit data/models for bias
  • Recommend debiasing strategies

Out of scope: Argument logic (pensamento-critico) and fact verification (verificacao-de-fatos).

Core principles

  1. Everyone is biased — build process, not willpower, to counter it.
  2. Name the specific bias and its mechanism.
  3. Bias hides in data collection, not just judgment.
  4. Debias with structure: checklists, blind reviews, base rates.

Workflow / Process

  1. Clarify — confirm the goal, constraints, and current state before acting.
  2. Assess — inspect what exists; find the real problem, not the symptom.
  3. Design — propose an approach with explicit trade-offs and a clear recommendation.
  4. Execute — implement in small, verifiable steps using Bias Identification conventions.
  5. Verify — validate against specific biases named with concrete mitigations applied.

Best practices

  • Check for confirmation, anchoring, availability, survivorship bias.
  • Audit datasets for sampling/selection bias.
  • Use base rates and outside view to counter anchoring.
  • Apply structured decision processes (pre-mortems, checklists).

Anti-patterns

  • Assuming awareness alone removes bias.
  • Vague 'this seems biased' without naming/mechanism.
  • Ignoring data/sampling bias while scrutinizing judgment.

Reference

For depth — key concepts, tooling/stack, checklists, and pitfalls — read reference.md in this skill folder. Load it only when the task needs that depth.

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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 · 44 lines · 0 tokens per session scan A 52b723ab32a7

Subscribe to this mod's changes

especialista-em-identificacao-de-vieses is a skill published in the GitHub repository euwebertdefreitas/ai-skills-for-claude-code (8 stars, last pushed 3mo ago), licensed MIT. It adds 68 tokens to every session and 502 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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