When you let an agent write and execute code, you have two choices: run it on your own infrastructure or send it to a sandbox service. The first option is a security nightmare. The second option is a procurement nightmare if you’re in the EU and your vendor is in the US.
E2B popularized the agent sandbox pattern: hardware-isolated microVMs, REST APIs, and SDKs that let agents spin up ephemeral execution environments. The technical design is solid. The legal design is a problem for European teams that need data processing agreements, GDPR compliance, and compute that never crosses the Atlantic.
Orkestr is positioning itself as the EU alternative. Same primitives, different jurisdiction. This is about where the VMs boot, where the snapshots live, and who can be compelled to hand over execution logs.
The Jurisdictional Problem
GDPR Article 44 says you cannot transfer personal data outside the EU unless the destination country offers adequate protection. The US does not, at least not in a way that survives court challenges. Schrems II killed Privacy Shield. The new Data Privacy Framework is under legal scrutiny. Enterprise procurement teams know this and block US-hosted services until legal signs off.
Agent sandboxes process personal data constantly. User inputs, API keys, file contents, execution logs, and error traces all flow through the sandbox. If the sandbox runs in a US data center, or if the company operating it is subject to US legal jurisdiction, you have a data transfer problem.
The solution is not encryption or contractual clauses. The solution is keeping the compute, the storage, and the legal entity inside the EU.
What Changes When You Stay in the EU
The technical shape of an EU-resident sandbox service looks identical to a US one. The differences are in placement, egress, and audit trails.
Compute Placement
Every VM must boot in an EU region. Orkestr uses Hetzner and OVH data centers in Germany and France. E2B runs on AWS us-east-1 and us-west-2 by default. You can request EU regions on E2B’s enterprise plan, but the company itself is US-based, which means FISA 702 and CLOUD Act requests still apply.
For orkestr, the legal entity, the infrastructure, and the data all sit inside EU jurisdiction. That makes the data processing agreement straightforward.
MCP Server Integration
Both services expose an MCP (Model Context Protocol) server that you can drop into Claude Code, Cursor, or any MCP client. This is not a differentiator between the two services. It is table stakes for agent sandbox infrastructure. The MCP server lets the LLM create, execute, and terminate sandboxes without custom API integration.
The compliance difference is where the MCP server runs. Orkestr’s MCP server runs in the same EU data centers as the sandboxes. E2B’s MCP server runs in US regions by default. If your orchestrator is in the EU and your MCP server is in the US, every sandbox lifecycle event crosses the Atlantic.
Network Egress
Sandboxes need internet access. Agents install packages, call APIs, and fetch data. If the sandbox is in the EU but the package mirror or API endpoint is in the US, you have a data leak.
Orkestr’s default network policy allows outbound HTTPS but logs every connection. You can lock it down to an allowlist of EU-hosted endpoints. This is not a feature you see advertised, but it is the kind of detail that matters when legal reviews your architecture diagram.
Secret Management
Agents need credentials. API keys, database passwords, and OAuth tokens flow into the sandbox as environment variables or files. If those secrets are stored in a US-based secret manager (AWS Secrets Manager, GCP Secret Manager), you have another transfer problem.
Orkestr integrates with EU-hosted Vault instances or lets you inject secrets at runtime without persisting them. The SDK supports ephemeral credential injection. The pattern looks like this (illustrative pseudocode):
from orkestr import Sandbox
with Sandbox.create(template="python-3.12") as sbx:
sbx.env.set("API_KEY", get_ephemeral_token())
result = sbx.exec("python /workspace/script.py")
# API_KEY is cleared from memory after execThis is not airtight, but it limits the window for credential leakage. The runtime zeroes the environment variable after the process exits.
Audit Trails and Log Retention
GDPR Article 30 requires you to document processing activities. That means logging every sandbox execution: who created it, what code ran, what data it touched, and when it was destroyed.
Orkestr logs every API call and stores the logs in EU-resident object storage (Hetzner Object Storage or OVH Object Storage). Log retention defaults to 90 days, but you can configure it down to 7 days if you want to minimize data retention risk.
E2B logs to AWS CloudWatch, which is fine if you are in the US. If you are in the EU, you need to export those logs to an EU bucket and configure retention policies that satisfy your DPA.
Architecture Comparison
Here is how the two services line up on the dimensions that matter for EU compliance:
| Dimension | E2B | Orkestr |
|---|---|---|
| Legal Entity | US (Delaware) | EU (Romania) |
| Default Compute Region | US (AWS us-east-1) | EU (Hetzner DE, OVH FR) |
| EU Region Availability | Enterprise plan only | All plans |
| Data Processing Agreement | Requires legal review | Standard EU DPA |
| Log Storage | AWS CloudWatch (US) | Hetzner/OVH Object Storage (EU) |
| Secret Management | Bring your own | Ephemeral injection + Vault integration |
| Network Egress Logging | Not documented | Logged by default |
| Snapshot Storage | AWS S3 (US default) | Hetzner/OVH (EU only) |
| MCP Server Location | US regions by default | EU regions only |
The One Thing That Never Stays in the EU
The LLM. If you are using OpenAI, Anthropic, or Cohere, your prompts and completions are leaving the EU. OpenAI’s API runs on Azure, which has EU regions, but the legal entity is US-based. Anthropic is US-only. Cohere has EU endpoints but the same jurisdictional problem.
If your LLM provider is US-based, you cannot claim full GDPR compliance regardless of sandbox jurisdiction. This requires a parallel decision on model hosting. You need a self-hosted model or a European provider like Mistral or Aleph Alpha.
Operational Trade-Offs
Cold Start Latency
MicroVMs boot fast, but not instantly. E2B advertises sub-second cold starts. Orkestr is in the same range, but cross-region latency adds 20-50ms if your orchestrator is in the US and your sandbox is in the EU. If you are running a synchronous agent loop, that adds up.
Snapshot Portability
Both services let you snapshot a running sandbox and restore it later. E2B snapshots live in S3. Orkestr snapshots live in Hetzner or OVH object storage. If you want to migrate from one service to the other, you need to rebuild your snapshots. There is no standard format.
Vendor Lock-In
The SDK shapes are similar, but not identical. If you build on E2B and later switch to orkestr, you will rewrite some code. The bigger lock-in is operational: monitoring, alerting, and cost tracking are all vendor-specific.
Compliance Drift
GDPR is not static. The Data Privacy Framework could be invalidated tomorrow. If that happens, your US-based sandbox service becomes non-compliant overnight. An EU-based service insulates you from that risk, but only if the legal entity and the infrastructure both stay in the EU.
When to Use an EU-Resident Sandbox
You need an EU-resident sandbox if:
- Your company is EU-based and your DPO will not sign off on US data transfers.
- Your customers are EU enterprises with strict data residency requirements.
- You are building a regulated product (healthcare, finance, government) that requires audit trails and jurisdictional guarantees.
- You want to avoid the legal overhead of Standard Contractual Clauses and Transfer Impact Assessments.
You do not need an EU-resident sandbox if:
- Your company and your customers are US-based.
- You are prototyping and compliance is not yet a concern.
- You already have an enterprise agreement with E2B that includes EU regions and a DPA you trust.
Technical Verdict
Orkestr and E2B solve the same problem: isolating agent-generated code in hardware-backed VMs. The technical primitives are nearly identical. The difference is jurisdiction.
If you are a US company or a non-EU company with no GDPR obligations, E2B is the safer bet. It has more users, more integrations, and better documentation.
If you are an EU company that needs a DPA, audit trails, and compute that never leaves the EU, orkestr is the cleaner path. You avoid the legal review cycle, the data transfer risk, and the compliance drift that comes with US-based infrastructure.
The one thing neither service solves is the LLM problem. If you need end-to-end EU residency, you need a European LLM provider or a self-hosted model. That is the architectural constraint that determines whether you can claim full GDPR compliance.
Source Links
- Original Dev.to Article (Stefan Iancu, June 2024)