Reviewed sourceDeveloper Toolsv1.0.0

doublecheck Agent Plugin

Apply a three-layer verification pipeline to AI output by extracting claims, finding supporting or contradicting sources, and flagging hallucination patterns for human review.

0 repository stars MIT Updated Aug 6, 2026
Reviewed seed

Doublecheck

with reviewed context.

The catalog adds a fixed-commit inventory, operating summary, prerequisites, and task-fit guidance for Doublecheck.

Inspect, compare, verify

Installation

Install Doublecheck

Install from github/awesome-copilot in a compatible Agent Plugins client. Verified means a supporting source was found, not that a claim is definitively true. Search coverage and model judgment are limited, so experts remain responsible.

Terminal · Git sparse checkout
git clone --filter=blob:none --sparse https://github.com/github/awesome-copilot.git
cd awesome-copilot
git sparse-checkout set plugins/doublecheck
Verified means a supporting source was found, not that a claim is definitively true. Search coverage and model judgment are limited, so experts remain responsible.
Review the fixed-source README and manifest before enabling the workflow.

Explainable standards check

Latest official standard could not be confirmed

Official latest version: 1.0.0 (Working Draft). The value is read from the official specification and cached for one day.

Read the official specification

This is a static package-format check, not a security audit, quality score, malware scan, or guarantee of client compatibility.

Source package available for inspection

The package could not be checked: plugin.json returned 403.

Static source inspection

Capabilities

What can you do with doublecheck?

Apply a three-layer verification pipeline to AI output by extracting claims, finding supporting or contradicting sources, and flagging hallucination patterns for human review.

The reviewed package declares 1 skill and 1 agent resource for its documented workflow.

  • Extract verifiable claims and internal contradictions
  • Search for supporting or contradicting sources
  • Apply extra scrutiny to citations and statistics
  • Run adversarial checks for hallucination patterns
  • Rate claims as verified, plausible, unverified, disputed, or fabrication risk
  • Produce linked reports for independent human review

Audit claims and sources

Extract verifiable claims and internal contradictions; Search for supporting or contradicting sources; Apply extra scrutiny to citations and statistics.

Flag uncertainty and fabrication risk

Run adversarial checks for hallucination patterns; Rate claims as verified, plausible, unverified, disputed, or fabrication risk; Produce linked reports for independent human review.

Practical workflow

A reviewed Doublecheck workflow

Pass 01 / Start

Audit claims and sources

Self-audit the target text, enumerate factual claims, and categorize them for verification.

Pass 02 / Verify

Flag uncertainty and fabrication risk

Search for evidence, run an adversarial review, assign confidence ratings, and return links for human judgment.

Package contents

What is included in doublecheck?

doublecheck declares 1 Skill, 0 MCP configurations, and 1 additional resource. The included-file links below point to the reviewed source repository.

Agent Skills

1

doublecheck

MCP servers

0

No runtime service

Package format

Agent Plugins

Official latest 1.0.0

Synced source content

Repository README

View original README

This README snapshot is stored by Agent Plugins Hub and refreshed by the daily GitHub synchronization pipeline. Remote images and embedded content are not loaded.

Source
https://github.com/github/awesome-copilot#readme

This repository does not currently provide a README snapshot. The plugin instructions below remain available.

Source documentation

Doublecheck source documentation

Rendered from the linked GitHub source. Raw HTML is disabled, scripts cannot execute, remote images are omitted, and external links open separately.

What this catalog entry adds

This entry summarizes the fixed reviewed manifest and README without extending the upstream package's claims.

Package scope

Apply a three-layer verification pipeline to AI output by extracting claims, finding supporting or contradicting sources, and flagging hallucination patterns for human review.

Declared package inventory

Skills: doublecheck

Agent resources: doublecheck

Agents are listed as resources because the extension declares them separately from skills. Only the real upstream plugin.json and README.md are listed as package files.

Documented capabilities

  • Extract verifiable claims and internal contradictions
  • Search for supporting or contradicting sources
  • Apply extra scrutiny to citations and statistics
  • Run adversarial checks for hallucination patterns
  • Rate claims as verified, plausible, unverified, disputed, or fabrication risk
  • Produce linked reports for independent human review

Workflow

  1. Self-audit the target text, enumerate factual claims, and categorize them for verification.
  2. Search for evidence, run an adversarial review, assign confidence ratings, and return links for human judgment.

Requirements and limitations

Verified means a supporting source was found, not that a claim is definitively true. Search coverage and model judgment are limited, so experts remain responsible.

Review generated output and consequential actions with the relevant maintainer or subject-matter expert.

License

The upstream manifest and README identify the plugin as MIT licensed.