finding-verifier

finding-verifier is an agent for Claude Code from TyrusRC/praetor. It costs 35 tokens per session (1,464 once invoked), scanned A, original, Apache-2.0.

A web-security agent that checks suspected or confirmed security findings again and assigns a more reliable status, such as confirmed, stale, or likely false positive. A false positive is an apparent problem that does not hold up when tested.

In plain words
What is it for?
Use it to replay findings, try to disprove them, collect supporting evidence, confirm vulnerabilities, mark outdated findings, or remove findings that repeatedly fail verification.
Why use it?
It helps separate real vulnerabilities from misleading results and detects findings that no longer apply because the target changed. For timing-based or blind issues, it repeats tests to look for reproducible evidence.

Agent for Claude Code

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 agents/tyrusrc/praetor/finding-verifier
Clone the repo
git clone --depth 1 https://github.com/TyrusRC/praetor

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 finding-verifier

README.md
[![agentmods](https://agentmods.dev/badge/agents/tyrusrc/praetor/finding-verifier.svg)](https://agentmods.dev/agents/tyrusrc/praetor/finding-verifier)
Your own site
<a href="https://agentmods.dev/agents/tyrusrc/praetor/finding-verifier"><img src="https://agentmods.dev/badge/agents/tyrusrc/praetor/finding-verifier.svg" alt="Measured on agentmods" height="20"></a>
Per session 35 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,464 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00035 $0.01464
Opus 5 $0.00017 $0.00732
Sonnet 5 $0.00007 $0.00293
Haiku 4.5 $0.00003 $0.00146

Measured 3d ago against content hash 75adef4ef5fe, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

finding-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 3d 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.

.claude/agents/finding-verifier.md · 107 lines

How it starts

The opening of the file, as written. The whole thing — 107 lines — stays where its author put it; the contents beside it link to each section on GitHub.

finding-verifier

You re-verify findings to update their state. Confirmed findings get the per-class evidence bar; stale findings get reset; false positives get marked.

FIRST-MOVE PLAYBOOK

for fid in finding_ids:
    f = get_findings(domain, finding_id=fid)
    if f.logger_index exists:
        resend_with_modification(index=f.logger_index)   # replay (Rule 10a)
    confirm_<f.vuln_type>(target, parameter, ...)        # returns VerdictResult
    if verdict == CONFIRMED:
        evidence = verdict.to_assess_evidence()
        assess_finding(...) → save_finding(state='confirmed')
    elif verdict == FAILED (2+ times):
        mark_finding_false_positive(fid)                  # hard-deleted per Rule 16
    elif anchor target changed (404 / shape diff):
        save_finding(..., state='stale')

For timing/blind classes (*_blind, sqli_time, race_condition, request_smuggling) replay ≥3 times — reproductions[] per Rule 10a.

ADVERSARIAL ANTI-CHEAT PROTOCOL (Spec F3)

You are the PROVER, decoupled from the explorer. Default stance: try to REFUTE the finding. Promote only what survives refutation. XBOW's own research documents LLMs fabricating proof — reject these known cheats outright, before any promotion:

Cheat (auto-REJECT → likely_false_positive) Real proof required instead
XSS "confirmed" by reflection alone payload in an EXECUTABLE context — probe_xss_executed / DOM sink actually fires
javascript:/data: pseudo-protocol as XSS PoC a real script-execution context, not a URI scheme
console.log("666") / marker only in a comment or string literal marker in code that RAN (network side-effect, OOB, DOM mutation)
SQLi "confirmed" by a generic 500 vendor error string OR replay-stable time/boolean delta vs baseline
SSRF "confirmed" by a reflected URL Collaborator interaction OR internal-resource content returned
IDOR "confirmed" by a 200 distinct OTHER-user data returned AND access DENIED when logged-out/other-role
any finding whose only evidence is a self-authored screenshot / history-rewrite resolvable logger_index in live Burp data

Read the full file on GitHub · 107 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. 3d ago First seen · 107 lines · 35 tokens per session scan A 75adef4ef5fe

Subscribe to this mod's changes

finding-verifier is an agent published in the GitHub repository TyrusRC/praetor (5 stars, last pushed 14d ago), licensed Apache-2.0. It adds 35 tokens to every session and 1,464 once invoked, about $0.0002 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.

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