Ssti
PentesterFlow/agent
Server-Side Template Injection — fingerprint the engine first (Jinja2 / Twig / Velocity / Freemarker / ERB / Smarty / Mako / Handlebars / Pug), then escalate the engine-specific primitive to RCE or…
Server-side template injection detection, engine identification, and RCE
Install Ssti Testing
$ npx skills add NeoTheCapt/RedteamAgent --skill ssti-testing -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install NeoTheCapt/RedteamAgent ssti-testing --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/NeoTheCapt/RedteamAgent.git skills-src && mkdir -p .claude/skills && cp -r skills-src/agent/skills/ssti-testing .claude/skills/ssti-testing && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "ssti-testing" agent skill from https://github.com/NeoTheCapt/RedteamAgent/tree/master/agent/skills/ssti-testing into .claude/skills/ssti-testing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ssti-testing", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/NeoTheCapt/RedteamAgent/tree/master/agent/skills/ssti-testingType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add NeoTheCapt/RedteamAgent --skill ssti-testing -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install NeoTheCapt/RedteamAgent ssti-testing --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/NeoTheCapt/RedteamAgent.git skills-src && mkdir -p .agents/skills && cp -r skills-src/agent/skills/ssti-testing .agents/skills/ssti-testing && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "ssti-testing" agent skill from https://github.com/NeoTheCapt/RedteamAgent/tree/master/agent/skills/ssti-testing into .agents/skills/ssti-testing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ssti-testing", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add NeoTheCapt/RedteamAgent --skill ssti-testing -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install NeoTheCapt/RedteamAgent ssti-testing --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/NeoTheCapt/RedteamAgent.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/agent/skills/ssti-testing .cursor/skills/ssti-testing && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "ssti-testing" agent skill from https://github.com/NeoTheCapt/RedteamAgent/tree/master/agent/skills/ssti-testing into .cursor/skills/ssti-testing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ssti-testing", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/NeoTheCapt/RedteamAgent.git --path agent/skills/ssti-testing--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add NeoTheCapt/RedteamAgent --skill ssti-testing -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install NeoTheCapt/RedteamAgent ssti-testing --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/NeoTheCapt/RedteamAgent.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/agent/skills/ssti-testing .gemini/skills/ssti-testing && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "ssti-testing" agent skill from https://github.com/NeoTheCapt/RedteamAgent/tree/master/agent/skills/ssti-testing into .gemini/skills/ssti-testing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ssti-testing", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install NeoTheCapt/RedteamAgent ssti-testingInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add NeoTheCapt/RedteamAgent --skill ssti-testing -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/NeoTheCapt/RedteamAgent.git skills-src && mkdir -p .github/skills && cp -r skills-src/agent/skills/ssti-testing .github/skills/ssti-testing && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "ssti-testing" agent skill from https://github.com/NeoTheCapt/RedteamAgent/tree/master/agent/skills/ssti-testing into .github/skills/ssti-testing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ssti-testing", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add NeoTheCapt/RedteamAgent --skill ssti-testing -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install NeoTheCapt/RedteamAgent ssti-testing --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/NeoTheCapt/RedteamAgent.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/agent/skills/ssti-testing .opencode/skills/ssti-testing && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "ssti-testing" agent skill from https://github.com/NeoTheCapt/RedteamAgent/tree/master/agent/skills/ssti-testing into .opencode/skills/ssti-testing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ssti-testing", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
ssti-testing- GitHub stars
- 140
- Token cost
- ~748 tokens
- SKILL.md length
- 259 words
- Files
- 1
- Skills in repo
- 25
- Repo updated
- First seen
- Licence
- None found
At a glance
Server-side template injection detection, engine identification, and RCE
- Works in 5 steps: Detect Template Injection → Identify Template Engine → Exploitation — RCE → …
- Tasks that involve Penetration testing
- SKILL.md covers When to Activate, Tools, Methodology and What to Record
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Ssti Testing is an agent skill from NeoTheCapt/RedteamAgent. Server-side template injection detection, engine identification, and RCE
Its SKILL.md is about 750 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Security, covering Penetration testing and Backend development. It works with Java and PHP. The repository describes itself as: An AI red-team agent for authorized labs and web app pentesting workflows. Turns Claude Code / OpenCode / Codex into a structured recon → test → exploit → report workflow, with…
When your agent uses it
- Tasks that involve Penetration testing
- Tasks that involve Backend development
Example prompts
- “/ssti-testing”
Requirements
- Python 3
Workflow steps
5 steps, taken from the step headings in SKILL.md.
- Detect Template Injection
- Identify Template Engine
- Exploitation — RCE
- Sandbox Escape
- Blind SSTI
What it can do on your machine
Read from SKILL.md and the folder at commit 2e60476. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Ssti Testing loads about 748 tokens when it runs. Until then it costs about 21 tokens; SKILL.md has 259 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
Without a licence we can't republish the file, so here is its outline and opening line. It has 259 words (~748 tokens).
- name
- ssti-testing
- origin
- RedteamOpencode
Files
Just SKILL.md in agent/skills/ssti-testing of NeoTheCapt/RedteamAgent.
Open the folder on GitHubat commit 2e60476
Compare with similar skills
Ssti Testing next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Ssti Testing this skillNeoTheCapt/RedteamAgent | 140 | — | ~748 | Automated safety check: Pass | None | |
| SstiPentesterFlow/agent | 1.4k | — | ~1.2k | Automated safety check: Pass | Apache-2.0 | |
| Code Audit3stoneBrother/code-audit | 893 | 1 repos | ~2.7k | Automated safety check: Pass | None | |
| Insecure Deserialization PlaybookPentesterFlow/agent | 1.4k | — | ~1.7k | Automated safety check: Pass | Apache-2.0 | |
| Assess Migrationmendixlabs/mxcli | 128 | — | ~3.6k | Automated safety check: Notes | Apache-2.0 | |
| Php SecurityHoangNguyen0403/agent-skills-standard | 570 | — | ~604 | Automated safety check: Pass | MIT |
Similar skills
Code Audit
3stoneBrother/code-audit
Professional code security audit skill covering 55+ vulnerability types.
Insecure Deserialization Playbook
PentesterFlow/agent
Fingerprints which language or framework produced a serialized blob, then helps build a working gadget chain to test for insecure deserialization.
Assess Migration
mendixlabs/mxcli
Investigate an existing non-Mendix application (Java, .NET, Python, Node, PHP, …) and produce a structured migration assessment for Mendix.
Php Security
HoangNguyen0403/agent-skills-standard
PHP-only security standards for database access, password handling, and input validation.
Audit Skills
RuoJi6/audit-skills
当用户要求审计 Java、.NET 或 PHP 源码/部署产物/反编译产物/安全发现，并需要默认脚本输出目录、报告输出目录、Java/.NET 反编译与反混淆参考、Java 组件 YAML 正则匹配扫描、确认漏洞判定标准、安全 Payload 和 BurpSuite 原始 HTTP 请求包证据时使用。仅用于授权代码审计和防御性安全验证。
More from NeoTheCapt/RedteamAgent
All 25 skills in this repoAuth Bypass
NeoTheCapt/RedteamAgent
Test for authentication and authorization flaws including credential attacks, session issues, and access control bypasses
Business Logic Testing
NeoTheCapt/RedteamAgent
Business logic vulnerability detection — workflow bypass, price manipulation, state abuse, and application-specific flaws
Cors Testing
NeoTheCapt/RedteamAgent
CORS misconfiguration testing for data theft and access control bypass
Csrf Testing
NeoTheCapt/RedteamAgent
Cross-site request forgery testing for state-changing operations
Deserialization Testing
NeoTheCapt/RedteamAgent
Insecure deserialization detection and gadget chain exploitation
Directory Fuzzing
NeoTheCapt/RedteamAgent
Discover hidden directories, files, and endpoints on a web server
Related
Categories
Questions about Ssti Testing
What does Ssti Testing do?
Server-side template injection detection, engine identification, and RCE. Ssti Testing is an agent skill from NeoTheCapt/RedteamAgent.
When should I use Ssti Testing?
Ssti Testing fits situations like: tasks that involve Penetration testing; tasks that involve Backend development.
How do I install Ssti Testing in Claude Code?
Run `npx skills add NeoTheCapt/RedteamAgent --skill ssti-testing -a claude-code`. Or copy the skill folder (agent/skills/ssti-testing in NeoTheCapt/RedteamAgent) into .claude/skills/ssti-testing in your project. Claude Code loads it when a task matches its description.
How do I install Ssti Testing in Codex?
Run `npx skills add NeoTheCapt/RedteamAgent --skill ssti-testing -a codex`. Or copy the skill folder (agent/skills/ssti-testing in NeoTheCapt/RedteamAgent) into .agents/skills/ssti-testing in your project. Codex loads it when a task matches its description.
Can I use Ssti Testing in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add NeoTheCapt/RedteamAgent --skill ssti-testing -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/ssti-testing, .gemini/skills/ssti-testing, .github/skills/ssti-testing and .opencode/skills/ssti-testing in your project.
What does Ssti Testing need to run?
SKILL.md names no scripts, command-line tools or credentials: Ssti Testing is instructions for the agent only. Our summary lists: Python 3.
Does Ssti Testing access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Ssti Testing safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Ssti Testing use?
No licence was found for Ssti Testing or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Ssti Testing use?
About 748 tokens (SKILL.md is roughly 3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Ssti Testing?
Skills that share tags, products or a category with Ssti Testing: Ssti (PentesterFlow/agent, 1.4k stars), Code Audit (3stoneBrother/code-audit, 893 stars), Insecure Deserialization Playbook (PentesterFlow/agent, 1.4k stars) and Assess Migration (mendixlabs/mxcli, 128 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Ssti Testing?
NeoTheCapt (a GitHub user) maintains it in NeoTheCapt/RedteamAgent, which has 140 GitHub stars. The repository holds 25 skills in this directory. The repository was last updated on August 2, 2026.
Source: NeoTheCapt/RedteamAgent on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.