| What it does | Free C4 modeling tool with an MCP server for software teams to share architecture context with AI development tools
| Security runtime for autonomous AI agents and multi-agent workflows
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| Stage | Not given
| MVP
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| Founded | Not given
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| Based in | LT
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| Pricing model | Freemium
| Free trial
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| Pricing | Browser: Free with account. Desktop: €10 a month after 7-day free trial, one licence covers 3 machines. Enterprise: custom pricing.
| Starter: $29/mo with 7-day free trial, 250,000 requests/mo, 1,500 mins sandbox compute, 5 custom Wasm rules. Pro: $79/mo, 1,000,000 requests/mo, 5,000 mins sandbox compute, unlimited custom Wasm policies. Enterprise: Custom pricing. Pay-as-you-go overages: $8 per 100k extra requests and $0.005 per m
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| Key features | - System context, container, component, and code diagrams
- Live collaboration on models
- MCP server for AI coding agents
- Change sets for scoped agent work
- Organization SSO
- JSON import and export
- OpenAPI contract export
- Desktop app for macOS, Windows, Linux
- AI assistant for model descriptions
- Installable PWA
| - L4/L7 Proxy Interceptor for inline A2A and MCP protocol interception
- Sub-millisecond Wasm guardrails and PII redaction under 1.2ms
- Financial circuit breakers and spend locks with multi-node Redlock consensus
- Firecracker MicroVM sandboxing for untrusted code execution
- Human-in-the-Loop asynchronous state hydration for approval workflows
- Slack integration for approval requests and notifications
- Zero agent refactoring with drop-in integration
- Support for LangGraph, CrewAI, AutoGen, and Claude frameworks
- 99.99% uptime SLA for data plane proxy on Pro and Enterprise tiers
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| What makes it different | - Model elements exist once and appear on every level they belong to
- Endpoints are real OpenAPI documents, not diagram labels
- Desktop app keeps all data local and offline-capable
- Free browser version with no paywall or feature limits
- AI agents read and write architecture through MCP
| - Infrastructure-level security enforcement outside agent context prevents prompt injection bypasses
- Sub-5ms p99 latency overhead with fail-closed guarantees
- Memory-safe Rust implementation with WebAssembly policy execution
- Zero payload retention and data sovereignty with SAML/OIDC support
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 3 ▲ +1 (up) since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 10 | 0 |
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| Citation Flow (Majestic) | 28 | 0 |
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| Referring domains (Majestic) | 74 | 0 |
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