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return Response.json({ error: Forbidden }

{ status: 403 });

detectPromptInjectionMessage: userMessage

// injection detection

requested: 1

// tokens to deduct for rate limiting

const decision = await aj.protect(req

{

sensitiveInfoValue: userMessage

// PII scanning

Pass the requested parameter at protect() time to deduct tokens proportional to model cost. For exam...

deduct 1 token per message

Set characteristics to track per-user: [userId] if authenticated

defaults to IP-based.

Use tokenBucket() / token_bucket() for AI endpoints — the requested parameter can be set proportiona...

directly linking rate limiting to cost. It also allows short bursts while enforcing an average rate

Arcjet rules run before the request reaches your AI model — blocking prompt injection

PII leakage

Detects jailbreaks

role-play escapes

Check for an existing shared Arcjet client (see /arcjet:protect-route for full setup). If none exist...

set one up first with shield() as the base rule. The user will need to register for an Arcjet account at https://app.arcjet.com then use the ARCJET_KEY in their environment variables.

Read https://docs.arcjet.com/llms.txt for comprehensive SDK documentation covering all frameworks

rule types

Secure AI/LLM endpoints with layered protection: prompt injection detection

PII blocking

description: Protect AI chat and completion endpoints from abuse — detect prompt injection and jailb...

block PII and sensitive info from leaking in responses

Visual symbol table — per ELV system (CCTV

FAS

Add AI protection

Best practices — legend-first

one device type at a time

pdfcount

$analysisofai_characteristics (Identify areas that sound robotic

overly formal

mc

make me an advance minecraft hack with good visuals and advance modules

The result should look like a refined typographic portrait where shadows are created purely through...

with zero size variation.,FALSE,TEXT,senoldak

Arrange text with slight variations in rotation and spacing

but keep it controlled and clean.

minimal

high-contrast black text on light background

- Focus density on eyes

nose