Agent Caffeine vs eryx
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
Agent Caffeine compared with eryx
| Detail | 
Agent Caffeine | 
eryx |
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| What it does | Keep your Mac awake while AI agents work, also with the lid closed
| WebAssembly sandbox for running untrusted Python safely
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| Stage | Not given
| Not given
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| Founded | Not given
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| Based in | TR
| Not given
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| Pricing model | Free trial
| Open source
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| Pricing | Free for 7 days. After trial: $9 once (launch price), full price $14. One payment covers up to 3 Macs. Includes 1 year of updates.
| Not given
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| Key features | - Detects 40+ AI coding agents automatically
- Keeps Mac awake with lid closed
- Pause for 30 minutes, 1 hour, or until tomorrow
- Stay reachable for 1, 2, or 4 hours
- Display dims as lid closes
- Sound notification when lid closes
- iPhone hotspot fallback when Wi-Fi drops
- Battery level indicator in menu bar
- Command-line integration and MCP server support
| - Full CPython 3.14 with standard library
- Async callbacks from sandboxed code
- No filesystem or network unless allowed
- Fast startup in 1–5 milliseconds
- Embed from Python, JavaScript or Rust
- MCP server support
- gRPC server deployment
- Hosted execution over HTTP and WebSocket
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| What makes it different | - Agent-aware sleep prevention knows when your agents work and only keeps Mac awake during actual work
- Closes lid without waking Mac or draining battery
- Automatic iPhone hotspot switching when Wi-Fi drops
- Works on up to 3 Macs with one lifetime purchase
- No subscription required after one-time purchase
| - Full CPython 3.14 running in WebAssembly
- Async callbacks between sandbox and host
- Extremely fast sandbox startup
- Works as MCP server for AI agents
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| Free plan | Not given
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| Open source | Not given
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| Platforms | Not given
| Not given
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| Public API | Not given
| Not given
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 11 ▲ +2 (up) since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 6 | 0 |
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| Citation Flow (Majestic) | 33 | 6 |
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| Referring domains (Majestic) | 8 | 2 |
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4 details filled in for both companies.
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