reality-checker

Validate outputs against provided evidence and produce structured JSON verdicts.

1|Updated Mar 6, 2026
One-click install
npx skills add https://github.com/kernex-dev/kernex-agent --skill reality-checker-kernex-dev
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: reality-checker
Source: https://github.com/kernex-dev/kernex-agent/tree/main/deploy/skills/reality-checker
Command: npx skills add https://github.com/kernex-dev/kernex-agent --skill reality-checker-kernex-dev

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Prevents unverified or fabricated claims from being accepted by validating outputs against provided evidence and forcing explicit gaps when proof is missing.

Core Features & Use Cases

  • Evidence-first validation: Demands concrete artifacts (logs, test results, API responses, files) for each positive claim before marking work as complete.
  • Structured verdicts: Emits a machine-readable JSON verdict containing verdict, grade, verified findings, gaps, conditions, and a concise summary for downstream automation.
  • Quality gate for agents: Serves as the final skepticism gate in headless agent workflows to reduce hallucinations and ensure traceability.
  • Use Case: Run as the last step of CI or an autonomous workflow to certify releases, PR summaries, or automated patch proposals.

Quick Start

Validate the produced output by listing verified evidence, enumerating missing gaps, and returning the required JSON verdict structure.

Frequently Asked Questions about reality-checker

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I validate automated agent outputs against evidence before shipping?

To validate automated agent outputs against evidence, you can use an evidence-first validation gate that requires concrete artifacts like test logs or API responses for each claim. It checks provided proof and refuses to guess when evidence is missing.

How does structured verdict validation work for QA gates?

Structured verdict validation for QA gates works by emitting a machine-readable JSON verdict containing the final verdict, grade, verified findings, gaps, conditions, and a summary. This structure allows downstream automation to programmatically assess certification status.

What's the best way to prevent hallucinations in headless agent workflows?

The best way to prevent hallucinations in headless agent workflows is to apply a skepticism gate that demands traceable artifacts, such as file outputs or API responses, before accepting any positive claim as complete.

Can I use evidence-based validation to certify automated patch proposals in CI?

Yes, you can use evidence-based validation to certify automated patch proposals in CI. By running it as the final step in an autonomous workflow, it validates produced outputs against provided evidence and returns a structured JSON verdict.

What happens when evidence is missing during output validation?

When evidence is missing during output validation, the system refuses to guess or accept the claim. Instead, it forces explicit gaps in the structured JSON verdict, ensuring that unverified or fabricated claims are never marked as complete.

What is evidence-first validation for autonomous workflows?

Evidence-first validation for autonomous workflows is a certification mechanism that demands concrete artifacts like test results or API responses for each positive claim before marking work as complete, reducing hallucinations and ensuring traceability.