# Client Side

> Client-side vulnerability testing - XSS (reflected/stored/DOM), CSRF, CORS misconfiguration, Clickjacking, DOM-based attacks, and Prototype Pollution.

- **Type:** Skill
- **Install:** `agentstack add skill-transilienceai-communitytools-client-side`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [transilienceai](https://agentstack.voostack.com/s/transilienceai)
- **Installs:** 0
- **Category:** [Security](https://agentstack.voostack.com/c/security)
- **Latest version:** 0.1.0
- **License:** MIT
- **Upstream author:** [transilienceai](https://github.com/transilienceai)
- **Source:** https://github.com/transilienceai/communitytools/tree/main/skills/client-side
- **Website:** https://www.transilience.ai/

## Install

```sh
agentstack add skill-transilienceai-communitytools-client-side
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# Client-Side

Test for client-side vulnerabilities across modern web applications and SPAs.

## Techniques

| Type | Key Vectors |
|------|-------------|
| **XSS** | Reflected, Stored, DOM-based, framework-specific (React, Vue, Angular) |
| **CSRF** | Token bypass, SameSite cookie bypass, cross-origin requests |
| **CORS** | Misconfigured origins, null origin, wildcard credentials |
| **Clickjacking** | Frame-based, drag-and-drop, multi-step |
| **DOM-based** | DOM sinks, source/sink analysis, JavaScript URL schemes |
| **Prototype Pollution** | Client-side gadgets, server-side pollution, property injection |

## Workflow

1. Identify input sources and data flows
2. Classify sink contexts (HTML, attribute, URL, JS, CSS)
3. Enumerate defenses (encoding, CSP, sanitizers, Trusted Types)
4. Craft context-appropriate payloads
5. Validate execution and demonstrate impact
6. Document with reproduction steps and remediation

## Reference

- `reference/xss*.md` - XSS bypass techniques and exploitation
- `reference/csrf*.md` - CSRF techniques and bypasses
- `reference/cors*.md` - CORS misconfiguration testing
- `reference/clickjacking*.md` - Clickjacking techniques
- `reference/dom*.md` - DOM-based vulnerability testing
- `reference/prototype-pollution*.md` - Prototype pollution techniques

## Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [transilienceai](https://github.com/transilienceai)
- **Source:** [transilienceai/communitytools](https://github.com/transilienceai/communitytools)
- **License:** MIT
- **Homepage:** https://www.transilience.ai/

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/skill-transilienceai-communitytools-client-side
- Seller: https://agentstack.voostack.com/s/transilienceai
- Browse the marketplace: https://agentstack.voostack.com/browse

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Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.