SENTINELPROXY
Info · What it is
The AI Firewall for LLMs and agents

Sentinel sits between your app and its model, inspecting every prompt before it becomes an instruction.

LLMs and agents treat everything they read as a potential instruction: web content, retrieved documents, tool results, not just what a user types in a chat box. Sentinel scrubs that content on the way in, and scans tool results on the way back to the agent, so the model only ever acts on what it should.

Source
Your app or agent
user input · RAG · tool result
Sentinel
Inspect, score, decide
decodenormalizefast-pathsemanticPII / secrets (Teams+)
Destination
Anthropic · OpenAI
Grok · Gemini
receives the safe result
CLEAN FLAGGED NEUTRALIZED BLOCKED

What, who, when, and where

What it is

An AI Firewall, inline

Sentinel scrubs untrusted content, prompt injection, jailbreaks, and data-exfiltration attempts, before your model sees it, and scans tool results before they return to an agent.

  • HTML and hidden-content extraction, then encoding decode, normalization, fast-path regex, and semantic similarity
  • PII and secret redaction, run independently of the threat score
  • Package-hallucination checks that flag it when a model recommends a package name that isn't in the registry
  • Every request resolves to one of four outcomes: clean, flagged, neutralized, or blocked
Who it's for

Four audiences, one enforcement point

Same product. Each group leans on a different part of it.

  • Developers — one base URL swap, or one REST call
  • Security / InfoSec teams — a single audit trail for AI usage org-wide
  • Insurers / risk assessors — every request scored, categorized, and logged
  • Compliance-driven orgs — PII and secret redaction before content reaches a cloud model
When to use it

Any time the model reads content it didn't write

That includes, but isn't limited to:

  • Web fetches and crawled content
  • Retrieved chunks from a RAG knowledge base
  • End-user input in a chat or support flow
  • Tool outputs and MCP server responses, and third-party agent skills

It matters most for agentic sessions that take real actions, and for any regulated data heading toward a cloud model.

Where it deploys

Inline, self-hosted or SaaS

Nothing reaches the model unscored.

  • Self-hosted — a Docker Compose stack you run on your own infrastructure. Content never leaves your network.
  • SaaS — hosted at sentinelaifirewall.com, nothing to run yourself
  • Integration is a REST call to /v1/scrub, an SDK base-URL swap, or the Clawhub sentinel-proxy skill

Built for how each team already works

Developers
One base_url swap. 10–80ms.
Security / InfoSec
One enforcement point, one audit trail.
Insurers / risk
Every threat scored and categorized.
Compliance
PII and secrets redacted before they leave.

Start free, no card required.

100 requests a month on Starter, forever free. Add a key, swap a base URL, and Sentinel is inline.