Directory / E2B
E2B
Verified
Firecracker microVM sandbox API for AI-generated code.
E2B provides isolated cloud sandboxes based on Firecracker microVMs for running AI-generated code. Sessions are short-lived by default, with pause and snapshot features documented. The infrastructure repository documents self-hosting; the managed service is the common deployment.
- Model support
- Multi-model
- Deployment
- Cloud, Self-hosted, BYOC
- Open source
- Yes
- License
- Apache-2.0 (SDKs/infra); managed service is commercial
- Pricing model
- Usage
- Added / updated
- 19 Aug 2026 / 19 Aug 2026
Assessment
E2B covers sandbox execution; coding-agent behavior sits in another layer. Firecracker supplies the stated isolation model, while session lifetime and deployment mode determine the operational fit. Confirm current BYOC and self-hosting support before planning an air-gapped deployment.
Strengths
- Firecracker isolation documented.
- SDK aimed at untrusted generated code.
- Self-host and BYOC paths documented.
Limitations
- Managed use sends code to E2B's cloud.
- No coding agent; the harness is yours.
- Latency depends on workload and deployment.
Compare
- vs daytona : Sandbox products for running agent-written code.
- vs modal : General GPU and container compute compared with an agent sandbox.