dedup-analyst

dedup-analyst is an agent for Claude Code from bx33661/oh-my-vul. It costs 83 tokens per session (431 once invoked), scanned A, original, MIT.

A security-reporting helper that checks whether a software vulnerability has already been reported. It searches the NVD, GitHub Security Advisories, and databases for specific programming ecosystems.

In plain words
What is it for?
Checking a package, vulnerability type, affected component, and version range before submitting a security report. It records matching advisories and explains possible duplicates.
Why use it?
It helps prevent duplicate vulnerability reports and avoids made-up CVE identifiers. It also shows when a source could not be searched.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md). Also seen: model in frontmatter.

Good fit Checking a package, vulnerability type, affected component, and version range before submitting a security report. It records matching advisories and explains possible duplicates.

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Install with agentmods
npx agentmods add agents/bx33661/oh-my-vul/dedup-analyst
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/bx33661/oh-my-vul

Made for: Claude Code.

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 dedup-analyst

README.md
[![agentmods](https://agentmods.dev/badge/agents/bx33661/oh-my-vul/dedup-analyst/github.svg)](https://agentmods.dev/agents/bx33661/oh-my-vul/dedup-analyst)
Your own site
<a href="https://agentmods.dev/agents/bx33661/oh-my-vul/dedup-analyst"><img src="https://agentmods.dev/badge/agents/bx33661/oh-my-vul/dedup-analyst/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 dedup-analyst

Your own site · 80×15
<a href="https://agentmods.dev/agents/bx33661/oh-my-vul/dedup-analyst"><img src="https://agentmods.dev/badge/agents/bx33661/oh-my-vul/dedup-analyst.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 83 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 431 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 $0.00083 $0.00431
Opus 5 $0.00042 $0.00216
Sonnet 5 $0.00017 $0.00086
Haiku 4.5 $0.00008 $0.00043

Measured 9d ago against content hash 1041a5ce03ee, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

dedup-analyst 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.

agents/dedup-analyst.md · 34 lines

What it actually says

Agent: dedup-analyst

Delegated by: omv-report, omv-dedup, omv-critic

Searches for existing CVEs, GHSAs, and ecosystem advisories to detect duplicate submissions before a report is written.

Inputs

  • Package identity (ecosystem, registry name, repository URL)
  • Vulnerability class and affected component
  • Affected version range

Outputs

The dedup section of Evidence.v1:

  • nvd_searched, ghsa_searched, ecosystem_db_searched booleans
  • existing_cve: CVE ID if found, "none" if clean search, "unknown" if not searched
  • notes: summary of search results and any near-matches

Constraints

  • Search NVD, GitHub Security Advisories, and the ecosystem-specific advisory database (OSV, npm audit, PyPI safety DB, etc.). Use WebSearch for discovery and WebFetch for landing pages.
  • If a likely duplicate is found, block submission-ready output and explain the duplicate with version-range comparison.
  • If searching is impossible (network unavailable, rate-limited), set the corresponding *_searched: false and warn the user to search manually. Never invent CVE IDs.
  • Never assume a search result is a non-duplicate without verifying that the affected version range actually matches.
  • A near-match on package name alone is not a duplicate — confirm same vulnerability class, same sink, same version range.
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 · 34 lines · 83 tokens per session scan A 1041a5ce03ee

Subscribe to this mod's changes

dedup-analyst is an agent published in the GitHub repository bx33661/oh-my-vul (4 stars, last pushed 20d ago), licensed MIT. It adds 83 tokens to every session and 431 once invoked, about $0.0004 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 2026-08-31.