Ship Faster.
Eliminate Security Debt.
Launch secure-by-design agentic AI months ahead of schedule.
The Problem
The Internet Was Not Designed for Agentics
The rush to deploy autonomous AI agents has expanded organizational security risks far beyond what traditional perimeter defenses can handle; and it is happening too fast for security teams to keep up. Because AI agents operate at machine speed, an attack or system drift occurs in milliseconds. By the time anyone even detects a problem the agent has already compromised the system.
This is a failure of architecture. Legacy security models simply weren’t built for an agentic world.
The Atsign Solution
Launch Secure-by-Design Agents at AI Velocity
Atsign Platform accelerates your deployment with zero risk of attack or agent drift. Meanwhile, Atsign AI Architect guides your LLM to embed security directly into your architecture from day one. By eliminating security debt and providing your CISO with a verifiable, secure-by-design blueprint, you can launch faster with absolute peace of mind.
The Proof
Secure-by-Design Agentics, Independently Verified
In a rigorous evaluation by renowned cybersecurity test lab, Broadband-Testing, Atsign has been awarded their Gold Award. Pair your LLM copilot with Atsign AI Architect and you build agentics which are invisible to Internet attackers and unable to drift. Atsign completely eliminates traditional network attacks, agent specific attacks like prompt injections, poisoning and exfiltration, while also protecting against rogue and unplanned behavior.
Data Privacy
Your data belongs to you and only you. Non-custodial encryption keys never leave your control, messages between peers use shared public keys, and Atsign holds no decryption keys whatsoever. There is no man-in-the-middle. No backdoor. True data sovereignty is built in.
Know Your Customer (KYC)
Every actor in your agentic system has a verified cryptographic identity. It proves who they are, controls what they are authorized to do, and enables you to create a verifiable record of all their actions.
Embedded Foundational Security
Shift security to day zero. Applications operate securely from day one by eliminating traditional perimeter defenses and the need for open inbound ports entirely.
Reduced Infrastructure Overhead
By removing the need to configure add-on WAF, IdP, CDN, reverse proxies, service mesh, guardian agents, EDR, AI-SPM, behavioral detection, bug hunter firewalls, and VPNs, or edit firewall rules, teams reduce build and long-term operations costs.
Accelerated MVPs
Cut development times from months of manual network optimization down to hours. Deploy functional, secure MVPs faster than ever.
How You Use Atsign AI Architect
From Idea to Launch in Four Steps
Prompt or Map
Create a blueprint in AI Architect that outlines the inner workings of your system.
Verify & Align
Share the blueprint to collaborate with your team and CISO, verify data flows, guard rails, and kill switch policies before generating a single line of code.
Generate the Application
AI Architect converts your blueprint into a precise prompt for a Large Language Model. That prompt guides the LLM to build your application using Atsign Platform. The finished application inherits all of Atsign’s security and privacy benefits automatically.
Launch Months Early
Your application is secure-by-design from line one. No security retrofit, no compliance review bottleneck, no waiting. Launch with confidence knowing every agent, participant, and data flow meets your governance requirements.
Secure-by-Design: Three Atsign Innovations Working in Concert
Atsigns
Atsigns are unique, cryptographic identities with quantum-safe, non-custodial encryption that are assigned to every actor. Each Atsign is assigned unique privileges and policies that govern its behavior and authority to act.
Atsign Platform
Atsign Platform is the sovereign messaging layer where identity is verified before connections occur. Approved, encrypted, peer-to-peer communications take place without requiring open inbound ports. This lack of open ports makes your entire system invisible to malicious actors.
Atsign AI Architect
Atsign AI Architect is the tool that makes it easy to build your agentic systems on the platform. It integrates into your LLM build cycle without altering your workflow. This enables you to generate secure, CISO-verifiable applications that deploy safely.
Case Studies
See What’s Possible
Here’s what customers have accomplished using Atsign AI Architect and Atsign Platform.
High-Stakes HealthTech
The Project: Engineering a cross-platform mental health and wellness application to securely process Protected Health Information, clinical data, and voice journals.
The Result: A functional MVP in three hours and a four-month acceleration of the product launch. By moving cryptographic key management and secure transport to the platform layer, the application satisfied 95% of a standard healthcare compliance checklist from day one.
Human-Gated Corporate Governance
The Project: Designing a multi-agent corporate voting and multi-state compliance platform that automates administrative workflows without risking autonomous AI signature forgery.
The Result: A domain expert mapped and deployed a fully functioning system in two days. The architecture forces physical cryptographic identity verification for all executive actions. AI agents handle the paperwork and humans retain absolute authority.
Sovereign Enterprise Communications
The Project: Rebuilding an ephemeral, zero-knowledge messaging application to eliminate the vulnerabilities of custodial encryption, centralized file storage and persistent database footprints.
The Result: A multi-device secure prototype delivered in three days. By chunking and streaming media directly between cryptographic identities at the platform layer, the application removed all dependencies on third-party cloud storage and reduced central server overhead to near zero.
Executive Resources
Go Deeper
For teams that need to align development velocity with enterprise security standards before moving forward.
Reimagining Agentic AI for Maximum Security and Agility
Explores the four distinct stages of agentic maturity and explains why legacy network perimeters fail when autonomous agents begin interacting across corporate boundaries.
Restricted Access AI Agents
A technical roadmap for enterprise architects designed to move AI initiatives out of the pilot phase and into live production — by treating autonomous agents as managed digital entities with cryptographic boundaries.
FAQs
1. Atsign vs. an AI copilot, what is the difference?
An AI copilot is an AI coding assistant that accelerates writing code within an existing architecture; AI Architect is an agentic architecture governance tool that defines what Secure by Design Architecture should be built, how components relate, and what the LLM is permitted to code.
An AI copilot usually operates inside the IDE, AI Architect operates above it, producing the structured Blueprint JSON that constrains and directs the code Cursor (or any LLM) then generates.
2. How does Atsign's secure-by-design Architecture technically prevent common attack vectors?
No open ports means no inbound listening port ever opens on a server, so port scanning, service exploitation, and DDoS find no surface to target; all data is encrypted to the recipient’s public key before transmission, so packet capture yields only ciphertext; and every session requires mutual Atsign verification before a socket is created, eliminating unauthenticated connection attempts, credential stuffing, and man-in-the-middle insertion at the transport layer.
An AI copilot usually operates inside the IDE, AI Architect operates above it, producing the structured Blueprint JSON that constrains and directs the code Cursor (or any LLM) then generates.
3. Okta says 'authenticate first, then connect.' How is Atsign's authentication different and safer?
Okta authenticates at the network perimeter using a token issued by a central server that can be stolen, replayed, or compelled; Atsign authenticates at the identity layer using a private key that never leaves the device, so there is no token to intercept, no credential store to breach, and no authentication server whose compromise affects everyone. The connection itself cannot be established without identity verification, making authentication and connectivity a single atomic operation rather than two sequential steps.
An AI copilot usually operates inside the IDE, AI Architect operates above it, producing the structured Blueprint JSON that constrains and directs the code Cursor (or any LLM) then generates.
4. Where is Atsign vulnerable? What does the platform itself expose?
The root directory is a centralised lookup point (DNS-equivalent availability risk, not a data risk; it holds only addresses, never data); device key loss or compromise is the primary user-level risk since private keys cannot be recovered without the user’s backup; and the Atsign Platform SDK itself represents a software supply-chain surface, mitigated by open-source auditability, signed releases, and the fact that a compromised SDK cannot retroactively decrypt data already encrypted to other keys.
An AI copilot usually operates inside the IDE, AI Architect operates above it, producing the structured Blueprint JSON that constrains and directs the code Cursor (or any LLM) then generates.
5. Is Atsign "Security by Obscurity"?
Atsign passes the Kerckhoffs test; every architectural element of Atsign can be fully disclosed to an attacker without compromising its security: the protocol is public, The cryptography is standard ( quantum-proof), The lookup directory is public, the Atsign servers are addressable.
The No Open Ports question, isn’t that obscurity? Atsign doesn’t hide the mechanism, it eliminates the unauthenticated reachable surface. Attackers cannot initiate a connection without holding a valid identity.
An AI copilot usually operates inside the IDE, AI Architect operates above it, producing the structured Blueprint JSON that constrains and directs the code Cursor (or any LLM) then generates.
6. How do I protect against agentic agents going rogue with guard rails, kill switch, policies?
Model each agent as a Process node with explicit permission edges (defining what data namespaces it may read/write) and a kill-switch as a dedicated Policy node connected by a control edge. AI Architect encodes these as enforceable constraints in the Blueprint, so the LLM codes agents that check namespace authorisation before every action, and the kill-switch node can revoke the agent’s atSign permissions, cryptographically revoking its ability to act without redeploying code. Atsign automatically logs ever agent action as an immutable and verifiable record for governance and compliance.
7. How do I use AI Architect and Atsign Zero Exposure to protect my MCP interfaces?
Model each MCP interface as a Process node behind an Atsign tunnel, with Atsign identity as the sole admission criterion. MCP communications are now across the Atsign fabric not the open Internet (TCP/IP), so the MCP interfaces are not exposed on the open Internet. No MCP endpoint is reachable without a verified Atsign, the Blueprint defines which identities are permitted to call which MCP tools via typed permission edges, and the LLM generates an authentication wrapper that rejects unsigned or unrecognised callers before any tool logic executes, eliminating the unauthenticated MCP attack surface entirely.
8. What happens if I lose my keys? Non-custodial key management is a huge risk, isn’t it?
You don’t lose control if you lose a physical device, provided you’ve followed the recommended setup (multi-device enrollment + encrypted backup). You lose control if you lose all of your authorized devices and your backup and your passphrase — which is roughly the same threshold at which you’d lose access to a self-custody hardware wallet, or to an encrypted drive whose key you’ve forgotten.
Bring Your Prompt. Try Atsign Now.
Visit the workspace to explore secure integration examples, map your operational data flows, and generate a tailored LLM prompt for secure-by-default code. Build security into your core logic and launch your MVP today.
If you are designing a system with complex integration requirements, data sovereignty constraints, or specific compliance frameworks, you can speak directly with our technical team to evaluate your architecture.