| What it does | The interoperability layer for AI-enabled websites
| SIP-to-OpenAI gateway for building real-time multilingual AI voice agents
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| Stage | Not given
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| Founded | Not given
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| Based in | Not given
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| Pricing model | Open source
| Paid
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| Pricing | Free and open source
| Annual commercial licensing: 10 concurrent calls $1,480, 20 concurrent calls $2,620, 40 concurrent calls $4,420, 80 concurrent calls $6,420, 160 concurrent calls $8,860, Unlimited concurrent calls $10,680, Unlimited services and unlimited concurrent calls $16,860 (all USD, one year, contact sales)
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| Key features | - Multi-protocol support - projects to MCP, ACP, AP2, NLWeb, REST, GraphQL, OpenAPI and feeds
- AI Readiness Validator - scores site readiness from 0 to 100 with per-capability checks
- Discovery network - agents can discover AI-ready sites by capability or type
- OAuth2 with PKCE support for secure authentication
- SDKs in 8 languages - TypeScript, JavaScript, React, Python, PHP, Go, .NET and Ruby
- WordPress plugin for auto-generating AI2Web manifests
- Chrome extension for checking any site's AI readiness instantly
- SSRF protection for all outbound requests
- Supports llms.txt and agent.json formats for backwards compatibility
| - SIP server and IP-PBX integration
- OpenAI real-time speech-to-speech models
- Multilingual voice interaction
- Real-time SIP audio processing
- Sample source code in C#, VB.NET, and Delphi
- 30-day fully functional trial
- Simplified OpenAI integration
- Commercial B2B deployment licensing
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| What makes it different | - Describe your website once in a single manifest, projects automatically to all major AI protocols
- No vendor lock-in and no per-vendor rebuilds required
- Built-in safety by construction - high-risk actions always preview before running
- Free and open source with CC-BY 4.0 spec and MIT licensed SDKs
- Works across Claude, ChatGPT and any MCP client without per-vendor work
| - Gateway handles SIP audio bridging so developers focus on voice-agent logic
- Direct real-time connection between SIP calls and OpenAI speech models
- Eliminates complex OpenAI protocol and media integration overhead
- Includes working sample projects with documentation and demo videos
- Supports natural multilingual conversations on live calls
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 12 ▲ +1 (up) since last check | 25 ▲ +1 (up) since last check |
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| Trust Flow (Majestic) | 9 | 44 |
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| Citation Flow (Majestic) | 19 | 31 |
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| Referring domains (Majestic) | 61 | 95 |
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AI2Web
VaxVoIP Agent AI SDK