Intercept. Govern.
Protect every AI request.
OS-level proxy that intercepts all AI traffic, enforces policy rules at the process level, and prevents data leaks before they happen. Fully encrypted. Always verified.
Themisto Agent
Policy Enforcement
Gateway
Encrypted Relay
Themisto Agent
Policy Enforcement
Gateway
Encrypted Relay
From install to enforcement
in four steps
Install Agent
Lightweight agent installs on Windows or macOS. Configures itself as the system proxy, installs root CA certificate, and establishes mTLS connection to the gateway.
Traffic Interception
Every HTTP/HTTPS request is intercepted at the OS level. The agent resolves which process made the request — browser, IDE, CLI tool — with full path and code signature verification.
Policy Evaluation
Rules engine evaluates each request against your organization’s policies. Match on host, path, method, process name, code signatures. Decide: Forward, Bypass, or Block.
Secure Relay
Approved traffic flows through the mTLS gateway to AI services. Every request is logged with full telemetry. Blocked requests are stopped before data leaves the device.
See everything. Control everything.
See every AI request your organization makes
Every HTTP/HTTPS request passes through the Themisto agent. Know which applications are calling which AI services, resolved at the process level. Not just the domain — the actual executable.
- Process-level attribution (know which app, not just which domain)
- Real-time traffic interception on Windows and macOS
- Host, path, and code signature identification
- Complete audit trail of every request
Enforce rules without slowing teams down
Define policies that match on host, path, HTTP method, process name, path, and code signatures. Apply operators from exact match to regex and glob. Every rule results in a clear decision: Forward, Bypass, or Block.
- Rich matching operators (eq, prefix, suffix, contains, regex, glob)
- Process-aware rules (match by executable, path, or code signature)
- Three decision modes: Forward, Bypass, Block
- Automatic policy sync from control plane to every agent
Three tiers. Fully encrypted.
Every request is evaluated against your policies before it leaves the device.
Why Themisto
Yesterday's rules can't stop
today's AI risks.
Legacy security tools weren't designed for a world where every employee has access to powerful AI. Themisto was built for exactly this world.
Encrypted by Default
Every connection between agent, gateway, and backend is encrypted with mutual certificates. Device enrollment is automatic with cryptographic identity.
OS-Level Interception
Not a browser plugin. Not an API wrapper. A system proxy that captures every HTTP/HTTPS request at the OS level, with process-level attribution.
Process-Level Resolution
Know exactly which application made each request. Match policies against process name, path, and code signatures. See if it was Chrome, VS Code, or a rogue script.
Tamper-Proof Enforcement
Integrity monitoring detects tampering. Circuit breakers protect against failures. Policies are cached locally and synced automatically.
Built from the ground up.
Not bolted on.
Windows
- WinINET system proxy via registry
- Certificate store (Local Machine Root)
- Windows Service Manager integration
- GetExtendedTcpTable process resolution
- PowerShell network interface detection
macOS
- System preferences proxy configuration
- Keychain certificate management
- launchd service integration
- lsof-based process resolution
- Network interface and VPN detection
Built for scale.
Policy evaluation
Concurrent connections
Traffic encrypted
Continuous monitoring
Enterprise-grade by design.
Verify Everything
No implicit trust. Every single request is intercepted and verified against your policies.
End-to-End Encrypted
All traffic between agent, gateway, and backend is encrypted with mutual TLS certificates.
Process Attribution
Know exactly which application made each request. Not just the domain, the actual process.
Tamper Resistant
Integrity monitoring detects tampering and auto-recovers. Policies work even when offline.
Ready to govern
your AI ecosystem?
Get in touch with our team. We'll walk you through how Themisto fits into your security and compliance workflows.