local-tester

local-tester is an agent for Claude Code from allsmog/vuln-scout. It costs 47 tokens per session (1,299 once invoked), scanned A, original, MIT.

A security-testing specialist for the second phase of a white-box security review. White-box testing examines an application with access to its code and related analysis results.

In plain words
What is it for?
Use it to prepare dynamic tests, reproduce a reported security finding, document the evidence, and pass confirmed details to the person who develops a proof of concept.
Why use it?
It helps determine whether a suspected vulnerability can actually be exploited in a local test environment instead of relying only on code-analysis results.

Agent for Claude Code

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

Part of the vuln-scout plugin — 32 skills, 15 commands, 9 agents shipped together

Good fit Use it to prepare dynamic tests, reproduce a reported security finding, document the evidence, and pass confirmed details to the person who develops a proof of concept.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/allsmog/vuln-scout/local-tester
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/allsmog/vuln-scout

Made for: Claude Code.

Or install vuln-scout, the plugin that ships this one along with the rest of its 32 skills, 15 commands, 9 agents.

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 local-tester

README.md
[![agentmods](https://agentmods.dev/badge/agents/allsmog/vuln-scout/local-tester/github.svg)](https://agentmods.dev/agents/allsmog/vuln-scout/local-tester)
Your own site
<a href="https://agentmods.dev/agents/allsmog/vuln-scout/local-tester"><img src="https://agentmods.dev/badge/agents/allsmog/vuln-scout/local-tester/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 local-tester

Your own site · 80×15
<a href="https://agentmods.dev/agents/allsmog/vuln-scout/local-tester"><img src="https://agentmods.dev/badge/agents/allsmog/vuln-scout/local-tester.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 47 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,299 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 $0.00047 $0.01299
Opus 5 $0.00023 $0.00649
Sonnet 5 $0.00009 $0.00260
Haiku 4.5 $0.00005 $0.00130

Measured 9d ago against content hash 414f7f3c6fb2, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

local-tester 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.

vuln-scout/agents/local-tester.md · 163 lines

How it starts

The opening of the file, as written. The whole thing — 163 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a security testing specialist guiding Phase 2 of whitebox penetration testing - Local Testing.

Handoff Protocol

Receiving from code-reviewer / false-positive-verifier

When receiving a finding for dynamic testing, expect:

  • Finding ID and stable_key from .claude/findings.json
  • Vulnerability type, file, and line number
  • Any CPG/static analysis results available

Handing off to poc-developer

When testing confirms a vulnerability is exploitable, pass to poc-developer:

  • Finding ID: The id and stable_key from the findings artifact
  • Confirmed payload: The exact input that triggered the vulnerability
  • Auth requirements: What credentials/tokens are needed to reach the endpoint
  • Environment notes: Any setup steps needed (database state, config, etc.)
  • Test evidence: The observed behavior that confirms exploitability

Examples

Your Core Responsibilities:

  1. Guide setup of local test environments
  2. Provide step-by-step testing procedures
  3. Help confirm vulnerability exploitability
  4. Document testing results and evidence

Testing Process:

  1. Environment Setup
    • Verify test environment matches production
    • Ensure debugging capabilities are available
    • Set up logging to observe application behavior
    • Prepare interception proxy if needed

Read the full file on GitHub · 163 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 · 163 lines · 47 tokens per session scan A 414f7f3c6fb2

Subscribe to this mod's changes

local-tester is an agent published in the GitHub repository allsmog/vuln-scout (24 stars, last pushed 2mo ago), licensed MIT. It adds 47 tokens to every session and 1,299 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 2026-08-30.

Related

Other agents, from other repositories