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Claude Code Marketplaces

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Built for the Claude Code community with Claude Code by mertbuilds.com

Independent project, not affiliated with Anthropic
cognitedata avatar

Security

cognitedata/builder-skills
1.9k installs5 stars
Summary

This is a proper hardening workflow for Flows apps that actually fixes vulnerabilities instead of just listing them. It walks through six steps in order: mapping attack surfaces, migrating raw CDF calls to the official SDK, eliminating hardcoded secrets, sanitizing dangerous DOM APIs with DOMPurify, checking auth guards and OIDC setup, and validating external input with Zod. The grep commands are specific and the fix instructions are concrete, like wrapping dangerouslySetInnerHTML with DOMPurify.sanitize() or replacing eval() with JSON.parse(). Run this before shipping anything that touches credentials, user input, or external data. It assumes a React/Vite/TypeScript stack and catches the most common ways developers accidentally introduce XSS or injection holes.

Install to Claude Code

npx -y skills add cognitedata/builder-skills --skill security --agent claude-code

Installs into .claude/skills of the current project.

CodeRabbit
CodeRabbit
AI writes the code. CodeRabbit catches the slop.
Try For Free →
inference shell
inference shell
create and run specialised agents in minutes
build now →
MCP-ready Email SendingMCP-ready Email Sending
MCP-ready Email Sending
Plug Mailtrap into your AI workflow and let it handle the email.
Connect Mailtrap MCP →
Make your agent a DeFi expert
Make your agent a DeFi expert
Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →
Capacitor - Shared memory for your team’s coding agents.
Capacitor - Shared memory for your team’s coding agents.
Make coding agent sessions - Searchable, Shareable, Vendor-neutral & Scored.
Try For Free →
CodeScene MCP ServerCodeScene MCP Server
CodeScene MCP Server
Your agent targets a perfect 10 Code Health score. Deterministic. Every commit.
Try For Free →
Give your AI the whole web as clean markdownGive your AI the whole web as clean markdown
Give your AI the whole web as clean markdown
Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →
belt - the only tool your agent needs
belt - the only tool your agent needs
belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
one prompt install →
CodeRabbit
CodeRabbit
AI writes the code. CodeRabbit catches the slop.
Try For Free →
inference shell
inference shell
create and run specialised agents in minutes
build now →
MCP-ready Email SendingMCP-ready Email Sending
MCP-ready Email Sending
Plug Mailtrap into your AI workflow and let it handle the email.
Connect Mailtrap MCP →
Make your agent a DeFi expert
Make your agent a DeFi expert
Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →
Capacitor - Shared memory for your team’s coding agents.
Capacitor - Shared memory for your team’s coding agents.
Make coding agent sessions - Searchable, Shareable, Vendor-neutral & Scored.
Try For Free →
CodeScene MCP ServerCodeScene MCP Server
CodeScene MCP Server
Your agent targets a perfect 10 Code Health score. Deterministic. Every commit.
Try For Free →
Give your AI the whole web as clean markdownGive your AI the whole web as clean markdown
Give your AI the whole web as clean markdown
Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →
belt - the only tool your agent needs
belt - the only tool your agent needs
belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
one prompt install →
Files
SKILL.md

Select a file.

Featured
CodeRabbit
CodeRabbit
AI writes the code. CodeRabbit catches the slop.
Try For Free →
inference shell
inference shell
create and run specialised agents in minutes
build now →
MCP-ready Email SendingMCP-ready Email Sending
MCP-ready Email Sending
Plug Mailtrap into your AI workflow and let it handle the email.
Connect Mailtrap MCP →
Make your agent a DeFi expert
Make your agent a DeFi expert
Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →
Capacitor - Shared memory for your team’s coding agents.
Capacitor - Shared memory for your team’s coding agents.
Make coding agent sessions - Searchable, Shareable, Vendor-neutral & Scored.
Try For Free →
CodeScene MCP ServerCodeScene MCP Server
CodeScene MCP Server
Your agent targets a perfect 10 Code Health score. Deterministic. Every commit.
Try For Free →
Give your AI the whole web as clean markdownGive your AI the whole web as clean markdown
Give your AI the whole web as clean markdown
Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →
belt - the only tool your agent needs
belt - the only tool your agent needs
belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
one prompt install →
Categories
Backend & APIsSecurityDebugging
First SeenJun 3, 2026
View on GitHub

More from cognitedata/builder-skills

All 26 skills →
  • Graph Viewer1.9k
  • Setup Flows Auth1.9k
  • Setup Python Tools1.9k
  • Create Client Tool1.9k
  • Performance1.9k
  • Pull Changes Resolve Conflicts1.9k
  • Use Topbar1.9k
  • Migrate App To Flows1.7k
  • Integrate Fusion Agent1.6k
  • Flows Code Review1.6k
  • Flows Design Review1.1k
  • Flows App Brief1.1k
  • Flows External App Submit1.1k
  • Flows App Review298
  • Skill Creator2.5k
  • Code Quality1.9k
  • Dependencies Audit1.9k
  • Test Coverage1.9k
  • Design1.9k
  • Reveal 3d1.9k
  • Integrate Todo List1.9k
  • Correctness And Error Handling1.9k
  • Dm Limits And Best Practices1.9k
  • Integrate Atlas Chat1.9k

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