agent-self-evaluation-patterns

agent-self-evaluation-patterns is a skill for Claude Code, Codex from mickeyyaya/refactoring-skills. It costs 68 tokens per session (4,763 once invoked), scanned A, original, MIT.

A guide to making AI agents check the quality of their own answers, including confidence estimates, critique-and-revision steps, and tests for made-up information.

In plain words
What is it for?
Use it to design or review agents that produce facts, code, analysis, or structured data where errors matter.
Why use it?
It helps catch incorrect, incomplete, or overconfident output before it reaches users or other systems.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to design or review agents that produce facts, code, analysis, or structured data where errors matter.

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Install with agentmods
npx agentmods add skills/mickeyyaya/refactoring-skills/agent-self-evaluation-patterns
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 mickeyyaya/refactoring-skills --skill agent-self-evaluation-patterns
Clone the repo
git clone --depth 1 https://github.com/mickeyyaya/refactoring-skills

Made for: Claude Code, Codex.

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 agent-self-evaluation-patterns

README.md
[![agentmods](https://agentmods.dev/badge/skills/mickeyyaya/refactoring-skills/agent-self-evaluation-patterns/github.svg)](https://agentmods.dev/skills/mickeyyaya/refactoring-skills/agent-self-evaluation-patterns)
Your own site
<a href="https://agentmods.dev/skills/mickeyyaya/refactoring-skills/agent-self-evaluation-patterns"><img src="https://agentmods.dev/badge/skills/mickeyyaya/refactoring-skills/agent-self-evaluation-patterns/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 agent-self-evaluation-patterns

Your own site · 80×15
<a href="https://agentmods.dev/skills/mickeyyaya/refactoring-skills/agent-self-evaluation-patterns"><img src="https://agentmods.dev/badge/skills/mickeyyaya/refactoring-skills/agent-self-evaluation-patterns.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 68 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,763 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 $0.04763
Opus 5 $0.00034 $0.02381
Sonnet 5 $0.00014 $0.00953
Haiku 4.5 $0.00007 $0.00476

Measured 8d ago against content hash 531a19c579a9, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

agent-self-evaluation-patterns 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 8d 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/agent-self-evaluation-patterns/SKILL.md · 427 lines

How it starts

The opening of the file, as written. The whole thing — 427 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Agent Self-Evaluation Patterns

Overview

AI agents that cannot evaluate their own output quality are unreliable in production. A model that confidently produces wrong answers, fabricates citations, or never flags uncertainty becomes a liability rather than an asset. Self-evaluation patterns give agents structured mechanisms to detect errors, express calibrated uncertainty, and improve output quality before results reach users.

When to use: Designing agents that produce factual claims, code, analysis, or structured data; reviewing agent pipelines for hallucination risk; building eval suites for AI-generated content; any system where incorrect LLM output has meaningful downstream consequences.

Quick Reference

Pattern Core Problem Key Technique Failure Mode
Confidence Scoring Agent returns wrong answers with false certainty Logprob analysis, self-consistency sampling Overconfident scoring — high score on hallucinated output
Chain-of-Thought Reflection Errors baked into first draft go unchallenged Generate → critique → revise cycle Rubber-stamp reflection — critique that validates the original uncritically
LLM-as-Judge Model cannot objectively evaluate its own output Separate judge call with scoring rubric Same model judging itself — no independence, shared biases
Hallucination Self-Detection Claims unverifiable against source material Source grounding checks, API existence verification Reflection loop amplifies fabricated details instead of catching them
Output Quality Verification Schema or structural errors in generated output Assertion-based checking, schema validation Checking format only — passes schema but semantically wrong
Eval-Driven Development No objective measure of agent improvement Define graders before implementation, regression gates Graders written after the fact, shaped to pass existing output

Confidence Scoring

Read the full file on GitHub · 427 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. 8d ago First seen · 427 lines · 68 tokens per session scan A 531a19c579a9

Subscribe to this mod's changes

agent-self-evaluation-patterns is a skill published in the GitHub repository mickeyyaya/refactoring-skills (6 stars, last pushed 5mo ago), licensed MIT. It adds 68 tokens to every session and 4,763 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 2026-08-31.

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