Form Security
CheckedAnalyzes web forms to identify vulnerabilities like XSS and SQL injection, suggesting remediation steps.
Install on your platform
Showing Claude Code. One command installs this skill into any of the agents below.
- 1
Run this in your project
terminal$ npx skills add bbeierle12/skill-mcp-claude --skill form-security -a claude-code Uses the open-source
skillsCLI and needs Node.js. Add-gto install it for your user instead of this project.
What we know about this skill
Publisher
bbeierle12
Taken from the source listing. We haven't verified who controls this account.
Install target
Live repository
Not pinned. Installing fetches whatever the repository holds at the time you run the command.
Automated safety checks
This skill passed all 6 checks. We read its files at one commit and looked for the things that make a skill dangerous to run — not for whether it works.
Declares what it does: passed
SKILL.md parses and declares a name and a description.
SKILL.md exists, its frontmatter parses, and it declares a name and a description.
No undeclared network calls: passed
Makes no network calls.
Every host the skill dials — from its scripts, its config endpoints or the commands it tells the agent to run — is either well-known package and API infrastructure or declared in its own frontmatter. Links in documentation are not counted.
No obfuscated payloads: passed
No encoded or obfuscated payloads.
No base64, hex or compressed blob is decoded and then executed, and no encoded shell commands.
No credential access: passed
Reads no keys, tokens, keychains or credential files.
Neither the code nor the SKILL.md instructions read SSH keys, cloud credentials, keychains, token stores, browser cookie databases or dotfiles that hold secrets.
No pipe-to-shell installers: passed
No pipe-to-shell or download-and-run installers.
No `curl … | sh` pattern, in the code or in the instructions, that runs code fetched at run time.
Pinned to a commit: passed
Scanned bbeierle12/skill-mcp-claude at 00b298e07e.
The exact upstream commit SHA that was scanned is recorded, so the result refers to specific bytes.
- Commit
- 00b298e07e
- Manifest
- skills/form-security/SKILL.md
- Scanned
- 3 files, 949 lines
About this skill
What it does
This security-focused skill enables AI agents to validate and sanitize user input within web forms before processing. It protects applications from common injection attacks by enforcing strict data integrity rules during submission.
When to use it
- Deploying public-facing registration or login pages vulnerable to malicious scripts.
- Processing sensitive user data where input validation is critical for compliance.
- Integrating AI agents that interact with dynamic web interfaces requiring secure form handling.
- Hardening backend endpoints against cross-site scripting (XSS) and SQL injection attempts.
Key capabilities
- Automated detection of potentially harmful payloads in form fields.
- Real-time sanitization of user-submitted data to remove dangerous characters.
- Prevention of code execution through rigorous input filtering mechanisms.
- Enhanced defense posture for web applications handling untrusted input sources.
Example prompts
- "Scan this registration form submission for any embedded JavaScript or SQL injection attempts."
- "Validate the contact form inputs against standard security patterns before storing them in the database."
- "Apply strict sanitization rules to user comments submitted via this web interface to prevent XSS attacks."
Tips & gotchas
Ensure the skill is configured with appropriate allowlists for expected input formats to avoid false positives on legitimate data. Regularly update validation rules as new attack vectors emerge in the threat landscape.