Zero-Trust AI Gateway
for Teams That Can't Compromise

Citadel sits between your users and AI providers, giving you complete control over every request — with virtual API keys, spend tracking, guardrails, and full audit logging.

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Built For

Your World, Your Requirements

Secure AI for Government Environments

  • Zero-trust architecture — every request authenticated, every response logged
  • FIPS 140-2 compliant security headers and encryption standards
  • AWS GovCloud ready — deploy within your authorization boundary
  • Full audit logging — complete request/response capture for compliance
  • CUI-approved model routing — control which models handle sensitive data
  • Virtual API keys — provider credentials never exposed to end users

AI Guardrails Your Security Team Controls

  • Guardrails pipeline — pre/post-call content filtering on every request
  • PII filtering — detect and redact sensitive data before it reaches providers
  • Jailbreak detection — block prompt injection and adversarial inputs
  • Content moderation — enforce acceptable use policies automatically
  • Budget enforcement — per-user and per-team spend limits with alerts
  • Incident-ready logging — full payloads for security investigation

One Endpoint, Every Model

  • OpenAI-compatible API — drop-in replacement, no SDK changes
  • 200+ models via OpenRouter, Vertex AI, and Bedrock from one endpoint
  • Multi-provider routing — switch models with a config change, not a refactor
  • Streaming support — real-time token streaming across all providers
  • Usage analytics — per-model cost tracking and request metrics
  • No vendor lock-in — your code stays clean, Citadel handles the plumbing

Capabilities

Everything You Need to Control AI Access

A unified gateway that handles authentication, cost management, security, and observability.

Virtual API Keys

Issue scoped keys to users and teams. Real provider credentials stay locked in your infrastructure — never exposed.

Spend Tracking & Budgets

Real-time cost tracking per user, team, and API key. Set hard budget limits and get alerts before overruns.

Request Logging & Audit

Full request/response capture with structured metadata. Built for compliance audits and incident investigation.

Guardrails & Content Filtering

Pre- and post-call filtering pipeline. PII detection, jailbreak prevention, and content moderation — inline, not bolted on.

Multi-Provider Routing

Access 200+ models through OpenRouter, Vertex AI, and Bedrock. One endpoint, zero provider lock-in.

OpenAI-Compatible API

Drop-in replacement for any OpenAI SDK client. Streaming, function calling, and tool use — all supported.

How It Works

Three Steps to Controlled AI Access

Deploy Citadel in front of your AI providers and gain immediate visibility and control.

1

Connect

Point your AI clients at Citadel's OpenAI-compatible endpoint. Add your provider credentials once.

2

Control

Issue virtual API keys, set budgets, and configure guardrails. Define who can access which models.

3

Monitor

Track spend in real time, review audit logs, and get alerts. Full visibility into every AI interaction.

See Citadel in Action

Book a 15-minute walkthrough and see how Citadel fits your environment.

Book a Demo → Contact Us

Or email us directly at contact@radiusmethod.com