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101,036 skills indexed with the new KISS metadata standard.

Showing 24 of 101,036Categories: Data, General, Coding & Debugging, Writing & Content, Creative
Coding & Debugging
PromptBeginner5 minmarkdown

- Data entry points (APIs

forms

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General
PromptBeginner5 minmarkdown

- **Layer**: Client-side

server-side

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Coding & Debugging
PromptBeginner5 minmarkdown

Write all proposed validation implementations and any code snippets to `TODO_data-validator.md` only. Do not create any other files. If specific files should be created or edited

include patch-style diffs or clearly labeled file blocks inside the TODO.

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General
PromptBeginner5 minmarkdown

- **Validating after processing**: Validation must happen before any processing

storage

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Data
PromptBeginner5 minmarkdown

In `TODO_data-validator.md`

include:

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General
PromptBeginner5 minmarkdown

### Java/Kotlin (Bean Validation

Spring)

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Writing & Content
PromptBeginner5 minmarkdown

- **Trusting Content-Type headers**: Attackers set any Content-Type they want; validate actual content

not declared type

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Creative
PromptBeginner5 minmarkdown

- Use Jakarta Bean Validation annotations (@NotNull

@Size

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Coding & Debugging
PromptBeginner5 minmarkdown

- Track validation bypass attempts (modified client-side code

direct API calls)

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Coding & Debugging
PromptBeginner5 minmarkdown

### JavaScript/TypeScript (Zod

Joi

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Coding & Debugging
PromptBeginner5 minmarkdown

### Python (Pydantic

Marshmallow

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Coding & Debugging
PromptBeginner5 minmarkdown

- Cache results of expensive validation operations (DNS lookups

external API checks)

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Coding & Debugging
PromptBeginner5 minmarkdown

- Keep validation schemas in sync with API documentation (OpenAPI

GraphQL schemas)

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General
PromptBeginner5 minmarkdown

- Use established validation libraries (Zod

Joi

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General
PromptBeginner5 minmarkdown

- Never trust any input regardless of source

including internal services

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General
PromptBeginner5 minmarkdown

- [ ] File uploads validated for type (magic bytes)

size limits

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Data
PromptBeginner5 minmarkdown

- [ ] Injection attacks (SQL

XSS

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General
PromptBeginner5 minmarkdown

- [ ] Validation is implemented at all layers (client

server

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General
PromptBeginner5 minmarkdown

After completing the validation implementation

verify:

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General
PromptBeginner5 minmarkdown

- Unit tests cover every validation rule with valid

invalid

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General
PromptBeginner5 minmarkdown

- Enum values validated against an explicit allowlist

not a blocklist

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General
PromptBeginner5 minmarkdown

- No system internals

stack traces

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General
PromptBeginner5 minmarkdown

- Implement temporal validation (expired tokens

past dates

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Data
PromptBeginner5 minmarkdown

- Check referential integrity against existing data (unique usernames

valid foreign keys)

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