S
SENTRIUM
Sign In Deploy Gateway
DETERMINISTIC RUNTIME CONTROL PLANE

Security & Access Control for Autonomous AI Agents

Sentrium is an inline security gateway that intercepts, evaluates, and constrains autonomous agent actions before execution. Halt unauthorized tool calls, enforce token and financial circuit breakers, redact sensitive PII before egress, and generate cryptographic, tamper-proof audit trails for every decision.

Deploy Enterprise Gateway Review Technical Architecture
Spend Intercepted
$847,320
Unauthorized API disbursements blocked in Q3 2026 across enterprise clusters.
P99 Intercept Overhead
41.8ms
Inline sidecar evaluation latency across 14,289 policy evaluations per second.
Zero-Day Injections Blocked
312
Critical prompt-injection exfiltration payloads dropped prior to socket dispatch.
Runtime Uptime SLA
99.995%
Contractually backed fail-closed high-availability consensus sidecars.
ENFORCING ACCESS POLICIES ACROSS MISSION-CRITICAL AGENT FLEETS
FINTECH CORE BANKING AUTONOMOUS LOGISTICS HEALTHCARE EHR INFRASTRUCTURE GLOBAL CLOUD BROKERS
FUNDAMENTAL PROBLEM

Why System Prompt Hardening Cannot Secure Autonomous Agents

Language models are probabilistic token predictors. When autonomous agents operate in multi-turn loops with tool-calling capabilities, prompt instructions are advisory, not enforceable boundaries.

VULNERABILITY VECTOR

Prompt-Level "Guardrails" (Advisory)

Instructing an LLM via system prompts not to drop database tables, exfiltrate credentials, or exceed \$100 API charges provides zero cryptographic assurance. Adversarial indirect prompt injections inside web pages, emails, or API responses reliably override system instructions.

  • Vulnerable to indirect prompt injection and semantic jailbreaks
  • No enforcement mechanism once the LLM issues a malformed JSON tool call
  • Zero telemetry regarding what payload was dispatched to third-party endpoints
  • Non-deterministic: fails under edge-case context compaction
SENTRIUM SOLUTION

Deterministic Runtime Interception (Enforced)

Sentrium operates as a low-latency network sidecar and proxy between the agent runtime and external resources. Every tool call payload is parsed, checked against declarative Rego/YAML policies, sanitized for PII, and evaluated against financial velocity caps before network delivery.

  • Mathematical determinism: unauthorized calls are dropped at the network layer
  • AST-level SQL query inspection and parameter bounds checking
  • Cryptographically signed audit records chained via SHA-256 ledgers
  • Real-time circuit breakers halt runaway recursive agent execution loops
LIVE INTERCEPTION STREAM

Real-Time Autonomous Agent Execution Feed

Inspect real-time policy evaluations across distributed agent clusters. Click any row to view full AST payloads, policy violations, and millisecond enforcement overhead.

LIVE INTERCEPTION FEED (GATEWAY CLUSTER: US-EAST-SEC-01)
FILTER:
TIMESTAMP AGENT ID INVOKED TOOL / TARGET ENFORCEMENT TRIGGERED POLICY LATENCY ACTION
PACKET INSPECTOR: EVT-000000
Originating Agent
-
Invoked Endpoint / Tool
-
Runtime Decision
-
Enforced Rule ID
-
Gateway Latency
-
Remediation Rationale
-
Intercepted Payload AST

            

          


          

            
INTERCEPTING: TCP/443 EGRESS & INGRESS • PROTOCOLS: HTTPS, GRPC, WEBSOCKETS

            
STATUS: ZERO BUFFER DROPS • FAIL-CLOSED ENFORCEMENT ACTIVE

          

        

      

    


    
    

      

        

          
CAPABILITIES

          
Complete Control Over Autonomous Agent Tool Execution

          

            Sentrium decouples agent reasoning from execution authority, providing deterministic policy enforcement across your entire autonomous pipeline.
          

        


        

          
          

            
PILLAR 01

            
Tool & API Execution Firewall

            

              Deep packet inspection for tool calls. Inspect JSON structures, validate parameter schemas, and block destructive verbs (e.g. DELETE, DROP, sudo) before sockets are opened.
            

            

              AST SCHEMA VALIDATION
              SUB-3MS EVAL
            

          


          
          

            
PILLAR 02

            
Spend & Rate Circuit Breakers

            

              Halt runaway multi-agent loops before unexpected billing spikes occur. Define sliding-window velocity caps, per-call financial limits, and global cost quotas across third-party APIs.
            

            

              VELOCITY MONITORING
              AUTO-HALT
            

          


          
          

            
PILLAR 03

            
Data Boundary & PII Redaction

            

              Perform inline regex and Named Entity Recognition (NER) to detect and redact SSNs, credit card numbers, auth tokens, and PHI before payloads leave your secure perimeter.
            

            

              ZERO-LEAK EGRESS
              HIPAA / SOC2
            

          


          
          

            
PILLAR 04

            
Cryptographic Audit Ledger

            

              Generate an immutable, SHA-256 chained event log for every tool invocation, model response, and policy decision. Export directly to Splunk, Datadog, or S3 for forensic verification.
            

            

              SHA-256 HASH CHAIN
              CEF / SYSLOG
            

          


          
          

            
PILLAR 05

            
Policy as Code (YAML & Rego)

            

              Manage governance rules in Git repositories. Version control your agent access boundaries using declarative Open Policy Agent (OPA) Rego rules and high-level YAML definitions.
            

            

              OPA REGO COMPATIBLE
              GIT-SYNCED
            

          


          
          

            
PILLAR 06

            
Human-in-the-Loop Escalation

            

              Route sensitive actions—such as privilege elevation or wire transfers—to Slack, Microsoft Teams, or Webhooks for multi-factor human approval before execution proceeds.
            

            

              2FA APPROVAL GATES
              15-MIN TTL
            

          

        

      

    


    
    

      

        

          
SYSTEM ARCHITECTURE

          
How Sentrium Intercepts Agent Execution

          

            Deploy as an eBPF network sidecar, a Kubernetes daemonset, or a transparent HTTPS reverse proxy with zero changes to your agent framework code.
          

        


        

          

            
01

            
Transparent Interception

            

              When your agent framework (LangChain, CrewAI, AutoGen, or custom runtime) issues an outbound tool invocation, Sentrium intercepts the network packet at the socket layer.
            

          


          

            
02

            
Deterministic Policy Eval

            

              The payload is parsed into an Abstract Syntax Tree. The local sidecar evaluates the target endpoint, parameter boundaries, spend quotas, and PII content against compiled policies in <5ms.
            

          


          

            
03

            
Enforce & Cryptographic Sign

            

              Compliant requests pass to destination APIs. Non-compliant actions are blocked immediately, returning a structured policy error to the agent while appending an immutable entry to your audit ledger.
            

          

        

      

    


    
    

      

        

          
COMPATIBILITY

          
Works with Any Agent Framework & LLM Provider

          

            Because Sentrium operates at the network and transport layer, you can govern agents built on any modern library without rewriting business logic.
          

        


        

          

            
CrewAI

            
Autonomous Multi-Agent Systems

          

          

            
LangChain / LangGraph

            
Stateful Agent Orchestration

          

          

            
Microsoft AutoGen

            
Conversational Multi-Agent Workflows

          

          

            
OpenAI Assistants API

            
Hosted Function Calling & Code Interpreter

          

          

            
Semantic Kernel

            
Enterprise AI Agent Runtime

          

          

            
LlamaIndex Workflows

            
Data Agent & Retrieval Networks

          

          

            
Claude Tool Use

            
Anthropic Client & Computer Use

          

          

            
Custom REST & gRPC

            
Native HTTP/2 & Transport Layer Proxy

          

        

      

    


    
    

      

        

          
FIELD VERIFICATION

          
Deployed by Enterprise Security & AI Platform Teams

          

            How security engineering organizations use Sentrium to grant production access to autonomous agents without compromising compliance.
          

        


        

          

            

              "We had autonomous agents indexing production PostgreSQL databases for customer reporting. Within 72 hours of deploying Sentrium, the firewall blocked an indirect prompt injection attempting to execute a destructive schema drop. It paid for itself in a single afternoon."
            

            

              VP of Information Security Architecture
              Global FinTech & Payments Infrastructure
            

          


          

            

              "When you give multi-agent clusters access to external data enrichment APIs, recursive hallucination loops can burn through tens of thousands of dollars in minutes. Sentrium's financial circuit breakers are the only reliable barrier keeping our API spend deterministic."
            

            

              Principal AI Platform Architect
              Enterprise Supply Chain Automation
            

          


          

            

              "For HIPAA compliance, we could never allow an LLM agent to freely dispatch clinical notes without verifiable PII redaction. Sentrium's inline DLP sidecar processes payloads in under 4ms and provides a SHA-256 signed audit log our compliance auditors accepted on first review."
            

            

              Chief Information Security Officer
              HealthTech Diagnostic Platform
            

          

        

      

    


    
    

      

        

          
INVESTMENT

          
Transparent, Predictable Governance Pricing

          

            Production-grade security infrastructure. No free tiers, no ad-supported limits. Transparent monthly commitments backed by enterprise SLAs.
          

        


        

          
          

            

              
Team Gateway

              
For high-growth engineering teams deploying autonomous agents to production.

            

            

              $
              490
              / month
            

            
    
              
  • ✓ Up to 25 autonomous agent instances
    • 
              
  • ✓ 1,500,000 tool evaluations / month
    • 
              
  • ✓ Sub-10ms policy enforcement latency
    • 
              
  • ✓ AST SQL & Destructive Verb Firewall
    • 
              
  • ✓ 14-day cryptographic audit log retention
    • 
              
  • ✓ Standard email SLA (8 business hours)
    • 
            

            Deploy Team Gateway
          


          
          

            

              
Scale Cluster

              
For enterprise workloads requiring automated DLP, financial limits, and compliance.

            

            

              $
              1,850
              / month
            

            
    
              
  • ✓ Up to 150 autonomous agent instances
    • 
              
  • ✓ 12,000,000 tool evaluations / month
    • 
              
  • ✓ Sub-5ms policy enforcement latency
    • 
              
  • ✓ Real-time PII & Secret Egress Redaction
    • 
              
  • ✓ Financial & Token Velocity Circuit Breakers
    • 
              
  • ✓ 90-day SHA-256 audit ledger retention
    • 
              
  • ✓ Human-in-the-Loop Slack / Teams Escalations
    • 
              
  • ✓ 99.95% Availability SLA commitment
    • 
            

            Deploy Scale Cluster
          


          
          

            

              
Enterprise On-Prem

              
Self-hosted sidecar clusters for regulated finance, defense, and healthcare.

            

            

              $
              6,500
              / month
            

            
    
              
  • ✓ Unlimited agent instances & clusters
    • 
              
  • ✓ 100,000,000+ tool evaluations / month
    • 
              
  • ✓ Sub-2ms local eBPF sidecar execution
    • 
              
  • ✓ Self-hosted in VPC / On-Prem Kubernetes
    • 
              
  • ✓ 7-year immutable audit retention export
    • 
              
  • ✓ Custom Rego rule development support
    • 
              
  • ✓ 99.995% Uptime SLA with financial credits
    • 
              
  • ✓ 1-hour 24/7/365 Sev-1 SecOps response
    • 
            

            Consult Enterprise SecOps
          

        


        

          
            View Full Technical Matrix & SLA Terms →
          
        

      

    


    
    

      

        

          
ENGINEERING FAQ

          
Frequently Asked Questions

          

            Technical answers regarding deployment modes, latency impact, fail-closed mechanics, and regulatory compliance.
          

        


        

          

            
            

              When deployed as a local eBPF sidecar or daemonset in the same Kubernetes pod as your agent, Sentrium policy evaluations average 1.8ms to 4.2ms. When deployed as a regional reverse proxy over TLS 1.3, the evaluation overhead is typically under 41.8ms p99. Because the evaluation happens in memory before socket connection, the overhead is negligible compared to standard LLM inference latencies (which range from 800ms to 4,000ms).
            

          


          

            
            

              Sentrium operates on a strictly configurable fail-closed or fail-open architecture. For production environments handling sensitive financial or clinical data, Sentrium defaults to fail-closed: if the governance engine cannot verify the validity of an action or connection is severed, the tool call is blocked with a deterministic error code (ERR_GOVERNANCE_UNREACHABLE). High-availability clusters run redundant multi-region consensus nodes to guarantee 99.995% uptime.
            

          


          

            
            

              Never. Sentrium is an access control and security proxy, not a model provider. We maintain an absolute zero-model-training guarantee across all tiers, contractually backed in our Data Processing Agreement. Intercepted payloads are parsed ephemerally in volatile memory. If audit logging is enabled, payloads are encrypted at rest using AES-256-GCM with customer-controlled KMS keys.
            

          


          

            
            

              Prompt injection exploits the semantic boundary between instructions and untrusted data inside an LLM's context. Sentrium moves the security boundary outside the LLM entirely. Even if an agent's reasoning is completely subverted by an adversarial payload instructing it to "delete all customers" or "POST credentials to attacker.com", Sentrium evaluates the resulting tool call against deterministic parameter constraints, white-listed domain tables, and schema ASTs, dropping the malicious call regardless of the model's intent.
            

          


          

            
            

              Article 14 of the EU AI Act mandates that high-risk autonomous AI systems must be designed to enable human oversight, including the ability to stop the system and understand its operational boundaries. Sentrium provides the exact technical controls required: deterministic kill-switches, real-time Human-in-the-Loop approval gates for sensitive actions, and continuous, tamper-proof SHA-256 event logs that document every agent action for regulatory audit.
            

          


          

            
            

              Yes. While Sentrium includes a comprehensive library of pre-built policy rules for common tools (Stripe, GitHub, AWS, Salesforce, SQL engines), you can write custom policies in declarative YAML or Rego. Policies can be version-controlled in your Git repository and automatically synced to Sentrium clusters via our CI/CD webhook integration.
            

          

        

      

    


    
    

      

        
READY FOR PRODUCTION

        
Secure Your Autonomous Agent Fleet Today

        

          Deploy the Sentrium control plane in under fifteen minutes. Zero agent code rewrites. Immediate runtime protection against prompt injection, runaway spending, and data exfiltration.
        

        

          Provision Enterprise Cluster
          Schedule Security Consultation