// ai security code reviewer
Find the vulnerabilities before attackers do.
Paste a snippet and get a defensive security review — the risky lines, why they're dangerous, and how to fix them. Powered by Claude, with a built-in heuristic scanner when AI is offline. Your code is analysed in memory only and never stored.
What it checks for
- Injection sinks — SQL/command/code execution from untrusted input (CWE-89/77/95).
- Cross-site scripting — unescaped output of user data (CWE-79).
- Secrets in code — hardcoded keys, passwords, and tokens (CWE-798).
- Weak crypto & randomness — MD5/SHA-1 for passwords, predictable tokens (CWE-327/330).
- Unsafe deserialization, SSRF, path traversal, and disabled TLS verification.
Frequently asked questions
What kinds of vulnerabilities does it find?
It flags common classes such as injection, insecure deserialization, hardcoded secrets, weak crypto, missing input validation, and unsafe configuration, with severity and remediation guidance.
Which languages are supported?
It reviews most mainstream languages by reasoning over the pasted snippet; results are strongest for self-contained functions and clearly scoped files.
Is my code stored?
No. Code is analyzed for your session and is not retained or used for training. Avoid pasting production secrets — rotate anything you share anywhere.
Does it replace a full security audit?
No. It is a fast first-pass defensive review to catch obvious issues early; pair it with dependency scanning, tests, and human review for production code.
How your input is handled
Processing
Pasted code is reviewed for this one request. NeoShield does not store your source, and no snippet is retained after the response is rendered. The material you submit is sent to the AI provider for this one analysis and is not used to train models.
What we never keep
- Offline analyzer input is not stored or logged.
- No model-authored code is executed on NeoShield servers.
- Credentials, tokens, and payloads you paste are never written to disk by these tools.
Full detail on the Trust page and in the Privacy policy.
What this tool does — and does not — check
It checks
- Injection classes: SQL, command, template, and unsafe deserialization.
- Broken authentication and authorization logic, including missing ownership checks.
- Hard-coded secrets, API keys, and credentials committed into source.
- Weak cryptography and predictable randomness (CWE-327 / CWE-330).
- SSRF, path traversal, and disabled TLS verification.
It does not check
- It does not execute your code — analysis is entirely static.
- It does not resolve imports or analyze code you did not paste.
- It does not replace a full SAST pipeline or a manual code audit.
- It cannot prove code is free of vulnerabilities; absence of findings is not assurance.
How it works
- The snippet is sent to an AI reviewer prompt scoped to defensive analysis and mapped to CWE classes.
- Findings are returned with a severity, the specific line context, and a concrete fix.
- Model output is treated as untrusted data: it is displayed for your review and never executed on NeoShield servers.
Related tools
Need higher limits?
The Free plan includes a limited number of AI analyses per day on each tool. Pro raises the daily and monthly allowances across every AI tool, unlocks the advanced modules, and is a prepaid pass — it expires on its own, with no automatic renewal.