pr-adversary

pr-adversary is an agent for Claude Code from datum-cloud/claude-code-plugins. It costs 76 tokens per session (1,931 once invoked), scanned A, original, no licence file.

A read-only reviewer that challenges the claims in an open pull request by reproducing the reported failure and checking its queries, rendered output, and stated safeguards.

In plain words
What is it for?
It tests the failure a change claims to fix and checks the evidence and conditions described in the pull request.
Why use it?
It helps find cases where a proposed fix does not actually solve the problem or where the pull-request description overstates what changed.

Agent for Claude Code

Written for Claude Code: background in frontmatter. Also seen: model in frontmatter.

Part of the datum-platform plugin — 34 skills, 8 commands, 16 agents, 2 hooks shipped together

Good fit It tests the failure a change claims to fix and checks the evidence and conditions described in the pull request.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/datum-cloud/claude-code-plugins/pr-adversary
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/datum-cloud/claude-code-plugins

Made for: Claude Code.

Or install datum-platform, the plugin that ships this one along with the rest of its 34 skills, 8 commands, 16 agents, 2 hooks.

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 pr-adversary

README.md
[![agentmods](https://agentmods.dev/badge/agents/datum-cloud/claude-code-plugins/pr-adversary/github.svg)](https://agentmods.dev/agents/datum-cloud/claude-code-plugins/pr-adversary)
Your own site
<a href="https://agentmods.dev/agents/datum-cloud/claude-code-plugins/pr-adversary"><img src="https://agentmods.dev/badge/agents/datum-cloud/claude-code-plugins/pr-adversary/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 pr-adversary

Your own site · 80×15
<a href="https://agentmods.dev/agents/datum-cloud/claude-code-plugins/pr-adversary"><img src="https://agentmods.dev/badge/agents/datum-cloud/claude-code-plugins/pr-adversary.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 76 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,931 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown 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 $0.00076 $0.01931
Opus 5.5 $0.00030 $0.00772
Sonnet 5.5 $0.00015 $0.00386
Haiku 4.5 $0.00008 $0.00193

Measured 1mo ago against content hash 8f18f9afd244, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

pr-adversary 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 1mo 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.

Makes network callslowCapability

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

- You are read-only. You never write a file, never check out a branch, never fetch, and never post to GitHub. Your tool list grants Bash whole and restricts nothing. The plugin's `deny-gh-api-write` hook refuses GitHub w
plugins/datum-platform/agents/pr-adversary.md · 78 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 1mo ago Changed · +1 lines 8f18f9afd244
  2. 1mo ago Changed 7c19809143f4
  3. 1mo ago First seen · 77 lines · 76 tokens per session scan A cf3cd05704f2

Subscribe to this mod's changes

pr-adversary is an agent published in the GitHub repository datum-cloud/claude-code-plugins (2 stars, last pushed 5d ago), with no licence file. It adds 76 tokens to every session and 1,931 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-07.

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