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Intercept Injection Guard Laravel Package

promptphp/intercept-injection-guard

A Laravel package that intercepts and blocks prompt-injection attempts before they reach your AI integrations, with configurable detection rules and middleware-style protection for safer LLM-powered applications.

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Product Decisions This Supports

  • Security hardening and defense-in-depth for Laravel/PHP applications that process untrusted input, especially around request, form, API, webhook, or prompt/input ingestion paths.
  • Build-vs-buy evaluation: useful when the team lacks dedicated AppSec capacity and wants a focused injection-guard capability rather than building one from scratch.
  • Roadmap and compliance support: can contribute to security-risk reduction milestones, but v1.1.1 is a packaging/maintenance release only and should not be positioned as a new feature milestone.
  • Dependency governance: because this is a read-only subtree split from promptphp/intercept, PM should track upstream releases, security advisories, licensing, and maintenance cadence rather than treating this repo as the primary development home.
  • Pilot planning: suitable for a limited rollout in a non-critical Laravel service before broader adoption, with success measured by reduced injection findings, lower security-review effort, and acceptable operational overhead.

When to Consider This Package

  • Consider it when the stack is Laravel/PHP, the application accepts untrusted user or system input, and the team wants an additional injection guard alongside standard controls such as validation, parameterized queries/ORM binding, output encoding, and WAF.
  • A good fit if the organization already uses or plans to use promptphp/intercept, or wants a focused package from that ecosystem.
  • Adopt only after confirming upstream project health, license terms, security disclosure process, support expectations, and how the subtree split is maintained.
  • Look elsewhere if you need a standalone security product with independent release notes, vendor SLAs, extensive documentation, or a fully autonomous repository for issues and pull requests.
  • Do not treat this package as the sole injection-defense layer. Reassess when a functional release includes new capabilities, breaking changes, or deprecations; v1.1.1 itself shows only subtree-split metadata.

How to Pitch It (Stakeholders)

  • Executives: a targeted, low-cost security hardening option for Laravel/PHP input paths, best framed as defense-in-depth rather than a replacement for secure coding, WAF, or compliance programs.
  • Engineering: evaluate as an additional guard with version pinning, staging validation, and monitoring of upstream promptphp/intercept advisories. Since this repo is a read-only subtree split, fixes and feature requests should go upstream.
  • Product: it can support security-risk reduction and roadmap hygiene, but v1.1.1 should not be marketed as a new capability. Treat it as dependency maintenance and adopt through a measured pilot with clear security acceptance criteria.
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