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Vendor sellinnate
Package warden
Short Description Enterprise prompt sanitization & LLM guardrails for Laravel — deterministic-first, offline-by-default, EU-resident.
License MIT
Homepage https://github.com/sellinnate/warden

Keywords laravel warden pii llm Sellinnate guardrails prompt-injection ai-security owasp-llm

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Informations about the package warden

Warden for Laravel

Enterprise prompt sanitization & LLM guardrails for Laravel — deterministic-first, offline-by-default, EU-resident.

Warden sits between your application and any LLM as a bidirectional guardrail layer. On the way in it normalises and inspects prompts (prompt injection, jailbreak, PII, secrets); on the way out it validates and filters the model's response (unsafe content, data leaks, markdown exfiltration, malformed output).

It is hybrid and modular: a deterministic core (regex, deny-lists, heuristics, Unicode normalization) that runs offline at zero cost, plus optional, swappable AI drivers (moderation APIs, self-hosted classifiers, LLM-as-judge) for semantic coverage when you want it. Zero mandatory dependencies beyond illuminate/contracts.

📚 Full documentation: laravel-warden.selli.io

Why Warden

Deterministic-first. The rule layer is fast (p95 < 5 ms), free, explainable and fully testable. AI drivers are a second stage, never a prerequisite.
Normalize before every check. A single pass (NFKC, confusable folding, invisible/bidi stripping, de-leet, spacing collapse, recursive base64/hex decode) precedes every detector — so deny-lists can't be trivially bypassed.
Find vs. act are separate. Detectors return typed spans; the action (allow / redact / mask / encrypt / block / flag) is a policy decision.
EU/Italy aware. Codice Fiscale, P.IVA, IBAN with checksum validation; GDPR / EU AI Act friendly; nothing leaves your infrastructure by default.

Installation

Publish the config (optional):

Quick start

What it covers

Anchored to the OWASP Top 10 for LLM Applications (2025):

OWASP	Concern	Warden
LLM01	Prompt Injection	`InjectionScanner` (+ retrieval guard for indirect injection)
LLM02	Sensitive Information Disclosure	`PiiScanner` + `SecretScanner` (input & output)
LLM05	Improper Output Handling	`MarkdownDefangScanner` + `FormatScanner`
LLM07	System Prompt Leakage	`OutputLeakScanner` (canary + echo)

PII is EU/Italy-first with checksum-validated entities (Codice Fiscale incl. omocodia, Partita IVA, IBAN, credit cards). The reversible Vault lets you send de-identified text to the model and restore the user's real data in the answer.

Surfaces

Documentation

Full, exhaustive docs at laravel-warden.selli.io:

Quick Start · Configuration
Architecture · Normalization · Policies
Scanners: Injection · Secrets · PII · NSFW · Output
AI Drivers · Vault round-trip · RAG guard

Testing

Security

If you discover a security vulnerability, please review SECURITY.md for the responsible-disclosure process. Do not open a public issue.

Credits

Filippo Calabrese and Sellinnate S.r.l.

License

The MIT License (MIT). See LICENSE.md.

All versions of warden with dependencies

PHP Build Version

Package Version

Version v1.0.0 Release 27. Jun 2026
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Requires php Version ^8.3
ext-intl Version *
ext-mbstring Version *
illuminate/contracts Version ^11.0||^12.0||^13.0

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