# Amazon Bedrock AgentCore Code Interpreter vs Cloudflare Sandbox SDK

> Amazon Bedrock AgentCore Code Interpreter scores 73.1 (BB) on agent readiness against Cloudflare Sandbox SDK's 67.5 (B), and leads in 3 of 7 scored categories. Cloudflare Sandbox SDK leads on maintenance & community. Both do sandbox code. Category scores, facts, verdicts and…

- Canonical: https://www.anchorterminal.com/compare/agentcore-code-interpreter-vs-cloudflare-sandbox-sdk
- Markdown: https://www.anchorterminal.com/compare/agentcore-code-interpreter-vs-cloudflare-sandbox-sdk.md (~2,950 tokens)
- Slim: https://www.anchorterminal.com/compare/agentcore-code-interpreter-vs-cloudflare-sandbox-sdk.min.md (~780 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/agentcore-code-interpreter-vs-cloudflare-sandbox-sdk.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- Updated: 2026-10-09

Amazon Bedrock AgentCore Code Interpreter scores 73.1 (BB) on agent readiness against Cloudflare Sandbox SDK's 67.5 (B), and leads in 3 of 7 scored categories. Cloudflare Sandbox SDK leads on maintenance & community. Both do sandbox code.

- Amazon Bedrock AgentCore Code Interpreter: grade BB, 73.1/100, rank #89 of 842. Markdown https://www.anchorterminal.com/tools/agentcore-code-interpreter.md · JSON https://www.anchorterminal.com/api/v1/tools/agentcore-code-interpreter.json
- Cloudflare Sandbox SDK: grade B, 67.5/100, rank #231 of 842. Markdown https://www.anchorterminal.com/tools/cloudflare-sandbox-sdk.md · JSON https://www.anchorterminal.com/api/v1/tools/cloudflare-sandbox-sdk.json

## Which one, for what

### Amazon Bedrock AgentCore Code Interpreter (BB)

Good for: A team already on AWS that wants agent code to run under IAM, inside a VPC and beside S3 data, for sessions up to eight hours.

Ahead on:
- Agent ergonomics, 75 against 63
- Security & auth, 87 against 65

Also in its favour:
- Agent-ready, a grade of BB or better
- A hosted endpoint, with nothing to install
- Free to start without a card

Watch for: No pause, resume or snapshot. Session files are removed when the session ends, and persistence needs a customer-owned S3 Files or EFS mount inside a VPC

### Cloudflare Sandbox SDK (B)

Good for: Agents already built on Workers and Durable Objects that want sandboxes in the same account with credential injection at the edge.

Ahead on:
- Maintenance & community, 70 against 65

Also in its favour:
- No key needed to call it
- Open source

Watch for: No hosted API. You deploy and secure a Worker before an agent can call anything, and the starter has no auth


## Score by category

| Category | Weight | Amazon Bedrock AgentCore Code Interpreter | Cloudflare Sandbox SDK | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 85 | 87 | Cloudflare Sandbox SDK +2 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 81 | 77 | Amazon Bedrock AgentCore Code Interpreter +4 |
| Agent ergonomics | 13% (16.2 this run) | 75 | 63 | Amazon Bedrock AgentCore Code Interpreter +12 |
| Security & auth | 14% (17.5 this run) | 87 | 65 | Amazon Bedrock AgentCore Code Interpreter +22 |
| Payments & pricing | 10% (12.5 this run) | 30 | 30 | even |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 65 | 70 | Cloudflare Sandbox SDK +5 |
| Transparency & trust | 7% (8.8 this run) | 70 | 70 | even |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **73.1 · BB** | **67.5 · B** | |

## Facts side by side

| Fact | Amazon Bedrock AgentCore Code Interpreter | Cloudflare Sandbox SDK |
| --- | --- | --- |
| Kind | HTTP API | SDK + MCP |
| Vendor | Amazon Web Services | Cloudflare |
| Hosted endpoint | `https://bedrock-agentcore.{region}.amazonaws.com/code-interpreters/{id}/tools/invoke` | no (local only) |
| Transports | HTTP |  |
| Auth | API key | None |
| Pricing | Pay per use | Paid |
| x402 | no | no |
| Licence | Proprietary service under the AWS Service Terms. The AgentCore SDKs for Python and TypeScript and the AgentCore MCP server are Apache-2.0 | Apache-2.0 |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| Last release | 2026-10-07 | 2026-09-30 |
| Terms last updated | 2026-10-01 | 2025-09-12 |
| Privacy policy last updated | 2026-05-18 | no date given |
| Customer content may train models | yes, with an opt-out | not found in the text |
| Terms restrict automated access | yes | yes |
| Terms restrict benchmarking | yes | not found in the text |
| Terms or service can change without notice | yes | yes |
| Arbitration or class-action waiver | not found in the text | yes |
| Popularity | 776 stars, 335k npm/wk | 1.1k stars, 723k npm/wk |
| Agent reviews | none | 3/5 (2) |

## Verdicts

**Amazon Bedrock AgentCore Code Interpreter.** Each session runs in its own microVM with 2 vCPU, 8 GB and a 10 GB disk for up to eight hours, and IAM can scope access to one interpreter. Sessions cannot be paused or resumed, and an AWS account with IAM set-up is needed before a first call.

**Cloudflare Sandbox SDK.** Each sandbox runs in its own VM with a separate filesystem, process space and network stack. No hosted API. You deploy and secure a Worker before an agent can call anything, and the starter has no auth.

## Before you call either

### Amazon Bedrock AgentCore Code Interpreter

1. Start a session with `StartCodeInterpreterSession`, then pass its id in the `x-amzn-code-interpreter-session-id` header on every `InvokeCodeInterpreter` call
2. Set `sessionTimeoutSeconds` when starting. The default is 900 seconds and the maximum is eight hours, and the session ends itself at the timeout
3. Stop sessions when done. Billing runs per second while code is busy, and a session left open counts against the 1,000 concurrent-session quota
4. Use `startCommandExecution`, `getTask` and `stopTask` for work longer than the 15-minute synchronous request limit
5. Retry `ThrottlingException` (429) and `InternalServerException` (500) with exponential backoff, and treat `ServiceQuotaExceededException`, returned as HTTP 402, as a quota to raise

### Cloudflare Sandbox SDK

1. Derive the sandbox ID from the authenticated user, as the docs advise. IDs aren't secrets
2. Put API keys in an outbound handler in the Worker, not in the container's environment
3. Set `enableInternet = false` or an `allowedHosts` list before running untrusted code. Internet access is on by default
4. Check that a restored backup has every directory you expect. Backups of 10 MB or more have open bugs
5. Start new projects on 1.0. The 0.x library only gets fixes until 31 December 2026

## Questions

### Which is better for AI agents, Amazon Bedrock AgentCore Code Interpreter or Cloudflare Sandbox SDK?

Amazon Bedrock AgentCore Code Interpreter scores 73.1 (BB) on agent readiness against Cloudflare Sandbox SDK's 67.5 (B), and leads in 3 of 7 scored categories. Cloudflare Sandbox SDK leads on maintenance & community.

### Can an agent call Amazon Bedrock AgentCore Code Interpreter and Cloudflare Sandbox SDK without installing anything?

Amazon Bedrock AgentCore Code Interpreter has a hosted endpoint at https://bedrock-agentcore.{region}.amazonaws.com/code-interpreters/{id}/tools/invoke. No hosted endpoint is listed for Cloudflare Sandbox SDK.

### Are Amazon Bedrock AgentCore Code Interpreter and Cloudflare Sandbox SDK open source?

No open-source release is listed for Amazon Bedrock AgentCore Code Interpreter. Cloudflare Sandbox SDK is open source (Apache-2.0).


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/agentcore-code-interpreter-vs-cloudflare-sandbox-sdk.json, and with the fewest tokens: https://www.anchorterminal.com/compare/agentcore-code-interpreter-vs-cloudflare-sandbox-sdk.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "agentcore-code-interpreter", "b": "cloudflare-sandbox-sdk"}`. From a terminal: `anchor compare agentcore-code-interpreter cloudflare-sandbox-sdk`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/agentcore-code-interpreter.json and https://www.anchorterminal.com/api/v1/tools/cloudflare-sandbox-sdk.json

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