A fact-checking service that checks claims, web addresses, and content against current online sources and returns a verdict, confidence score, summary, and supporting sources.

Use it to verify statements in applications, review URLs, and check whether published content is still accurate.

It helps identify claims that are outdated, disputed, or unsupported instead of relying on information that may have changed.

public — Skill for Claude Code and Codex by Clawdio777/verity

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 Clawdio777/verity --skill public

Clone the repo

git clone --depth 1 https://github.com/Clawdio777/verity

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/clawdio777/verity/public/github.svg)](https://agentmods.dev/skills/clawdio777/verity/public)

Your own site

<a href="https://agentmods.dev/skills/clawdio777/verity/public"><img src="https://agentmods.dev/badge/skills/clawdio777/verity/public/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/clawdio777/verity/public"><img src="https://agentmods.dev/badge/skills/clawdio777/verity/public.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 651 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.

Model	Per session	Once invoked
Fable 5.1	$0.00000	$0.00651
Opus 5.5	$0.00000	$0.00260
Sonnet 5.5	$0.00000	$0.00130
Haiku 4.5	$0.00000	$0.00065

Measured 2mo ago against content hash e541fcf88d81, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

public 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 2mo 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.

public/SKILL.md · 88 lines

How it starts

The opening of the file, as written. The whole thing — 88 lines — stays where its author put it; the contents beside it link to each section on GitHub.

VERITY — Real-Time Fact-Checking Agent

VERITY verifies claims, URLs, and content against live web sources and returns structured verdicts with confidence scores.

Endpoint

POST https://verity.basechainlabs.com/api/verify
Authorization: x402 (USDC on Base)

Input

{
  "claim": "Is GPT-4 still the most capable OpenAI model?",
  "caller_id": "your-agent-id"
}

Output (VerityResult)

{
  "verdict": "OUTDATED",
  "confidence": 91,
  "summary": "GPT-4 has been superseded by GPT-4o and o3 models.",
  "what_changed": "OpenAI released GPT-4o (May 2024) and o3 (late 2024), both outperforming GPT-4 on benchmarks.",
  "sources": [
    { "url": "...", "title": "...", "published_date": "2025-01", "supports": "CONTRADICTS" }
  ],
  "checked_at": "2026-05-11T09:00:00Z",
  "recommendation": "Update any content referencing GPT-4 as the most capable model."
}

Verdicts

Verdict	Meaning
`CURRENT`	Claim is accurate and up to date
`OUTDATED`	Claim was true but has since been superseded
`DISPUTED`	Sources disagree — no clear consensus
`UNVERIFIABLE`	No usable sources found

Endpoints & Pricing

Endpoint	Description	Price
`POST /api/verify`	Standard claim verification	0.10 USDC
`POST /api/deep-check`	Multi-angle thorough verification	0.50 USDC
`POST /api/batch-verify`	Verify up to 10 claims at once	0.75 USDC
`POST /api/agent`	Natural language fact-check	0.10 USDC

When to call VERITY

Before publishing AI-generated content
When your RAG pipeline sources might be stale
To detect hallucinations in agent outputs
To audit articles for outdated facts
Before trusting a claim in an automated workflow

Persistent Memory

Pass a consistent caller_id (your agent ID, domain, or user hash) on every call. VERITY remembers topics you've checked, domains you monitor, and previous results — no re-sending context.

A2A Agent Card

GET https://verity.basechainlabs.com/api/agent?agent-card=true

Read the full file on GitHub · 88 lines

Files

What ships with it

4 files 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.

2mo ago First seen · 88 lines · 0 tokens per session scan A e541fcf88d81

Subscribe to this mod's changes

public is a skill published in the GitHub repository Clawdio777/verity (0 stars, last pushed 16d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 651 tokens. 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.

Research

public next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
publicClawdio777/verity	Skill	0	16d ago	MIT	A	0	Claude Code, Codex
imagegenopenai/codex	Skill	134k	today	Apache-2.0	A	113	Codex
local-ai-agentsmicrosoft/ai-agents-for-beginners	Skill	79k	today	MIT	A	200	Claude Code, Codex
playwright-climicrosoft/playwright	Skill	99k	today	Apache-2.0	A	19	Claude Code
systematic-debuggingobra/superpowers	Skill	314k	4d ago	MIT	A	21	Claude Code
next-cache-components-adoptionvercel/next.js	Skill	143k	today	MIT	A	95	Claude Code
chat-pet-sprite-creationmicrosoft/vscode	Skill	195k	today	MIT	A	53	Claude Code, Codex