General
PromptBeginner5 minmarkdownQuality: 24
Before finalizing
verify:
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General
PromptBeginner5 minmarkdownQuality: 24
- Layer: Client-side
server-side
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General
PromptBeginner5 minmarkdownQuality: 24
Use checkboxes and stable IDs (e.g.
VAL-PLAN-1.1):
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General
PromptBeginner5 minmarkdownQuality: 24
- Validating after processing: Validation must happen before any processing
storage
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General
PromptBeginner5 minmarkdownQuality: 24
Java/Kotlin (Bean Validation
Spring)
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Creative
PromptBeginner5 minmarkdownQuality: 24
- Use Jakarta Bean Validation annotations (@NotNull
@Size
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General
PromptBeginner5 minmarkdownQuality: 24
- Use established validation libraries (Zod
Joi
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General
PromptBeginner5 minmarkdownQuality: 24
- [ ] File uploads validated for type (magic bytes)
size limits
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General
PromptBeginner5 minmarkdownQuality: 24
- Never trust any input regardless of source
including internal services
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General
PromptBeginner5 minmarkdownQuality: 24
After completing the validation implementation
verify:
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General
PromptBeginner5 minmarkdownQuality: 24
- [ ] Validation is implemented at all layers (client
server
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General
PromptBeginner5 minmarkdownQuality: 24
- No system internals
stack traces
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General
PromptBeginner5 minmarkdownQuality: 24
- Unit tests cover every validation rule with valid
invalid
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General
PromptBeginner5 minmarkdownQuality: 24
- Enum values validated against an explicit allowlist
not a blocklist
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General
PromptBeginner5 minmarkdownQuality: 24
- Implement temporal validation (expired tokens
past dates
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Creative
PromptBeginner5 minmarkdownQuality: 24
- Validate cross-field dependencies (end date after start date
shipping address matches country)
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General
PromptBeginner5 minmarkdownQuality: 24
- Check for malicious patterns: excessively nested JSON
zip bombs
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General
PromptBeginner5 minmarkdownQuality: 24
- Implement file upload validation with magic byte verification
not just MIME type or extension
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General
PromptBeginner5 minmarkdownQuality: 24
- Sanitize file names to remove path traversal sequences (../
%2e%2e/) and special characters
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General
PromptBeginner5 minmarkdownQuality: 24
- Validate complex structures (JSON
XML
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General
PromptBeginner5 minmarkdownQuality: 24
- Verify edge cases: empty strings
nulls
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General
PromptBeginner5 minmarkdownQuality: 24
- Validate and sanitize file uploads for type (magic bytes
not just extension)
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General
PromptBeginner5 minmarkdownQuality: 24
- Normalize whitespace
trim leading/trailing spaces
2
General
PromptBeginner5 minmarkdownQuality: 24
- Schema validation: JSON Schema
Zod
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