e2b
e2b provides secure, ephemeral sandboxes (Firecracker microVMs) for AI agent code execution. Each sandbox spins up in <200ms with full Linux environment, Python/Node/etc preinstalled. Substrate for code-agent products including Anthropic Claude Code (artifacts run on e2b), Perplexity, You.com Search, Cognition Devin (partially), and Hugging Face Spaces. Apache 2.0 OSS + managed cloud. $13M Seed + Series A 2024 (Sunflower Capital + a16z).
At a glance
- Type
- Code-execution sandbox infrastructure for AI agents (firecracker microVMs)
- Tier
- T1
- Created
- 2023 (founded)
- Latest release
- not applicable — sandbox/runtime, not memory product
- License
- Apache 2.0 (SDK + CLI)
- Pricing
- Free + Pro ($150/mo) + Enterprise (quote); pay-per-second sandbox billing
- Funding
- $13M+ total raised (seed 2023 + Series A Sept-2024; Sunflower Capital + a16z + Lightspeed; Decibel + Y Combinator)
Taxonomy
- storage
- none-trivial
- retrieval
- none
- persistence
- ephemeral
- update
- read-only
- unit
- file
- governance
- opaque
- conflict
- out-of-scope
When to use
Optimised for: ephemeral secure code execution for AI agents (artifacts / tools)
Anti-fit: not applicable — sandbox/runtime, not memory product
Pros & cons
Pros
Standard substrate for code-execution-as-tool in major AI products (Anthropic Claude Code uses e2b); <200ms cold start; Firecracker microVM isolation; Apache 2.0 OSS SDK; major customers (Anthropic + Perplexity + Hugging Face).
Cons
Specialized to code-execution sandbox use case; less general-purpose than Modal / Daytona; managed pricing premium relative to self-hosted Firecracker.
Claims & capabilities
$13M+ raised (seed 2023 + Series A Sept-2024; Sunflower Capital + a16z); Firecracker microVM-based; <200ms cold start; used by Anthropic, Perplexity, Hugging Face; Apache 2.0 OSS SDK
Technical surface
- API surface
- REST + SDK (Python / TS / JS); CLI
- Backend storage
- not applicable — sandbox/runtime, not memory product
- Deployment
- Managed cloud (e2b.dev) + Apache 2.0 OSS SDK for self-hostable runtime
- Embedding model
- not applicable — not a memory product
- Multi-tenancy
- not applicable — sandbox/runtime, not memory product
- MCP
- native (MCP server for sandbox tools)
- A2A
- not applicable — sandbox/runtime, not memory product
- OpenTelemetry
- not applicable — sandbox/runtime, not memory product
Compare e2b with…
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Related systems
References (1)
- Anthropic Claude (foundation models) depends on at runtime — adjacent-infrastructure cell: Firecracker (substrate); Anthropic Claude Code; Perplexity; Hugging Face Spaces; competes with Modal Sandboxes / Daytona