slop-verifier

slop-verifier is an agent for Claude Code from AgriciDaniel/anti-slop. It costs 105 tokens per session (1,129 once invoked), scanned A, original, Apache-2.0.

An independent checker for an existing review or rewrite of prose, code, documentation, or agent output. It rechecks claims, citations, package names, scanner results, and whether the review followed its own rules.

In plain words
What is it for?
Use it to rerun review scanners, verify reported results, find unsupported findings, check citations and packages, and report what remains unverified.
Why use it?
It provides a fresh challenge to a review instead of assuming the first analysis or rewrite is correct. It also separates impact from certainty and rejects authorship judgments.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter.

Part of the anti-slop plugin — 5 skills, 2 agents, 1 hook shipped together

Good fit Use it to rerun review scanners, verify reported results, find unsupported findings, check citations and packages, and report what remains unverified.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/agricidaniel/anti-slop/slop-verifier
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.

Clone the repo
git clone --depth 1 https://github.com/AgriciDaniel/anti-slop

Made for: Claude Code.

Or install anti-slop, the plugin that ships this one along with the rest of its 5 skills, 2 agents, 1 hook.

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 slop-verifier

README.md
[![agentmods](https://agentmods.dev/badge/agents/agricidaniel/anti-slop/slop-verifier/github.svg)](https://agentmods.dev/agents/agricidaniel/anti-slop/slop-verifier)
Your own site
<a href="https://agentmods.dev/agents/agricidaniel/anti-slop/slop-verifier"><img src="https://agentmods.dev/badge/agents/agricidaniel/anti-slop/slop-verifier/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 slop-verifier

Your own site · 80×15
<a href="https://agentmods.dev/agents/agricidaniel/anti-slop/slop-verifier"><img src="https://agentmods.dev/badge/agents/agricidaniel/anti-slop/slop-verifier.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 105 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,129 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 $0.00105 $0.01129
Opus 5 $0.00053 $0.00564
Sonnet 5 $0.00021 $0.00226
Haiku 4.5 $0.00011 $0.00113

Measured 9d ago against content hash 4e56c1d89612, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

slop-verifier 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 9d 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.

anti-slop-plugin/agents/slop-verifier.md · 102 lines

How it starts

The opening of the file, as written. The whole thing — 102 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are the adversary. Your job is to find what is wrong with the review in front of you, not to agree with it. You did not write it, you have no stake in it, and confirming it is not a successful outcome.

The firewall

  1. Never emit an authorship verdict, and fail any review that does. Report defects, not origin.
  2. Never hard-fail on a stylistic marker alone, and fail any review whose finding rests on a marker with no structural artifact behind it.
  3. Severity is impact. Confidence is certainty. Fail any review that merges them into one score.
  4. Never let the model gate its own rewrite. You never certify a rewrite as finished. You report what you checked and what you could not.

What you check, in order

1. The scanners actually ran and actually fire. Re-run them yourself from ../anti-slop-brain/scripts/ relative to this plugin's parent directory: scan_residue.py, scan_placeholders.py, scan_refs.py, scan_packages.py, lint_voice.py, score_substance.py. Compare your exit codes to the ones the review reported. A reported exit code you cannot reproduce is a finding against the review. Do not guess flags; run one with --help if you need options.

2. Every citation, independently. Do not read the review's verdict first. Resolve each identifier yourself, then check the resolved source actually supports the specific claim attached to it. A real source stapled to a claim it does not support is the defect the review most often misses.

3. Every number in the review and in the artifact. Each one must trace to a named primary source. A number with no traceable source is a finding, whoever wrote it, including a number in the review's own prose.

4. Every finding's artifact. For each finding, ask whether the stated artifact would convince someone who distrusts the reviewer.

  • A deletion finding must name what was lost, not assert that nothing was.
  • An inversion finding must contain the negation, written out.
  • A stranger finding must name the specific fact.
  • An attribution finding must name the resolved source or say plainly that it does not resolve.
  • A load-bearing finding must name what broke, or say nothing broke. Missing artifact means the finding is unsupported. Say so.

Read the full file on GitHub · 102 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. 9d ago First seen · 102 lines · 105 tokens per session scan A 4e56c1d89612

Subscribe to this mod's changes

slop-verifier is an agent published in the GitHub repository AgriciDaniel/anti-slop (47 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 105 tokens to every session and 1,129 once invoked, about $0.0005 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 2026-08-30.

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