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Client-Side · transilienceai | DecimalAI

securityby transilienceai

Client-Side

transilienceai/client-side

Source transilienceai/communitytools ↗License MIT

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

SkillScore91Maintained

Automatic

Security & AppSec pack

Last verified 8/19/2026

What it changes

Passed 20 of 22 test cases with the skill, and 17 of 22 without it.

Without skill77%

With skill91%

Checks it passed that the model alone missed

The response includes server-side pollution.
The response identifies multi-step clickjacking techniques.
The response specifies enumerating defenses as the third step.

and 1 more in the full report

4 fixed16 passed either way1 still failing1 broke

Pass-rate lift: +14 pp
Tokens: -10%
Agent turns: 0%
Response time: -22%

Model gemini-3.6-flashMeasured 8/19/2026v120 of 22 cases passed with skill

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/transilienceai-client-side/SKILL.md https://app.decimal.ai/s/transilienceai-client-side/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add transilienceai-client-side, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/transilienceai-client-side/ and pins it in .decimal/skills.lock

decimalai skills add transilienceai-client-side

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/transilienceai-client-side/SKILL.md https://app.decimal.ai/s/transilienceai-client-side/SKILL.md

Raw file: /s/transilienceai-client-side/SKILL.md ↗ · machine-readable summary at /s/transilienceai-client-side.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 4 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 4

Prompt

When testing a SPA that employs Content Security Policy and DOMPurify, what step should immediately follow sink context classification in the security evaluation workflow?

What was checked, without and with the skill
Checked	Without skill	With skill
The response specifies enumerating defenses as the third step.	Missed	Passed

case-10 · gemini-3.6-flash · 8/19/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md32 linessingle file

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

Identify input sources and data flows
Classify sink contexts (HTML, attribute, URL, JS, CSS)
Enumerate defenses (encoding, CSP, sanitizers, Trusted Types)
Craft context-appropriate payloads
Validate execution and demonstrate impact
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

Track record

Benchmark

20 / 22

test cases passed, vs 17 / 22 without

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/3/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

transilienceai / communitytools

skills/client-side/SKILL.md

View on GitHub ↗

License MITImported 8/3/2026Version v1

Other skills for the same job

Published skills whose descriptions closely match this one, with their headline benchmark lift.

transilienceai/server-sideServer-side vulnerability testing - SSRF, HTTP Request Smuggling, Path Traversal, File Upload, Insecure Deserialization, and Host Header injection.Close match+18 pp pass-rate lift

More skills from the same source and nearby in the registry, with their headline benchmark lift.

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See it in action

What's inside

Client-Side

Techniques

Workflow

Reference

Track record

Benchmark

Adoption

SkillSafety

Source

Other skills for the same job

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