verify

verify is a skill for Claude Code, Codex from tony/skills. It costs 30 tokens per session (759 once invoked), scanned A, a copy of scholar-verify, MIT.

A study-checking tool that rechecks every citation and measurement against the current version of the source material.

In plain words
What is it for?
It helps audit cited repositories or documents and identify evidence that must be updated.
Why use it?
It finds broken links, missing files, changed quotations, and outdated numbers before they make a study misleading.

Skill for Claude CodeCodex

Part of the scholar plugin — 11 skills shipped together

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.

agentmods
npx agentmods add skills/tony/skills/verify
Any agent
npx skills add tony/skills --skill verify
Clone the repo
git clone --depth 1 https://github.com/tony/skills

Made for: Claude Code, Codex.

Or install scholar, the plugin that ships this one along with the rest of its 11 skills.

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 verify

README.md
[![agentmods](https://agentmods.dev/badge/skills/tony/skills/verify.svg)](https://agentmods.dev/skills/tony/skills/verify)
Your own site
<a href="https://agentmods.dev/skills/tony/skills/verify"><img src="https://agentmods.dev/badge/skills/tony/skills/verify.svg" alt="Measured on agentmods" height="20"></a>
Per session 30 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 759 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. Scan, not verified.
Origin 88% copy Near-identical to another mod 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 $0.00030 $0.00759
Opus 5 $0.00015 $0.00380
Sonnet 5 $0.00006 $0.00152
Haiku 4.5 $0.00003 $0.00076

Measured yesterday against content hash bcc32178c5bb, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

verify scanned grade A with 1 finding 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 yesterday.

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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

$ curl -s -o /dev/null -w '%{http_code}\n' -L '<url>'
Origin

This is a copy

88% identical to scholar-verify — 29 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

plugins/scholar/skills/verify/SKILL.md · 82 lines

How it starts

The opening of the file, as written. The whole thing — 82 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/scholar:verify

A study is a set of claims about a corpus that keeps moving. Without this, it rots into confident falsehood: every link still resolves, every number still reads as measured, and none of it is true any more.

Read ../../references/citation.md for what a citation was required to carry.

User arguments: $ARGUMENTS

Procedure

1. Walk every citation

For each cites entry in terms.jsonl, confirm three things separately, because they fail differently:

The ref still exists. A tag can be moved or deleted, and a deleted tag makes every URL built on it a 404 rather than a wrong answer.

The file still exists at that path on that ref.

$ curl -s -o /dev/null -w '%{http_code}\n' -L '<url>'

The quoted text still appears at the recorded locator. This is the one that fails silently: a file that grew by ten lines leaves a line-anchor citation resolving to unrelated code while still returning 200.

2. Re-run the measurements

With --refresh-metrics, run every command recorded in evidence/metrics.md and diff the output against what was recorded. A number that changed is not automatically wrong — the corpus moved — but it is no longer evidence for the claim it was cited under.

3. Report by failure mode

Four categories, because the remedy differs:

  • Moved — the ref advanced or the tag was retargeted. Re-pin.
  • Vanished — the file or ref is gone. The claim needs a new source or it needs retracting.
  • Misquoted — the locator resolves but the text there is not what was quoted. This is the dangerous one, and it is why quotations are recorded rather than just links.
  • Changed — a measurement produced a different number.

Rules

  • Do not edit a claim in place. Anything that overturns a standing claim goes to /scholar:revise, which records what was believed and why it failed.
  • Report a broken citation; do not repair it by finding a new source that happens to support the same claim. That is fitting evidence to a conclusion.
  • A citation that cannot be checked — a source now behind a paywall, a deleted repository — is reported as uncheckable, not as passing.

Read the full file on GitHub · 82 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. yesterday First seen · 82 lines · 30 tokens per session scan A bcc32178c5bb

Subscribe to this mod's changes

verify is a skill published in the GitHub repository tony/skills (2 stars, last pushed 6d ago), licensed MIT. It adds 30 tokens to every session and 759 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). It is 88% identical to scholar-verify, differing in 29 lines, and is treated as a copy.

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