# Amazon Bedrock AgentCore Code Interpreter vs Microsoft Execution Containers

> Microsoft Execution Containers scores 76.3 (BB) on agent readiness against Amazon Bedrock AgentCore Code Interpreter's 73.1 (BB), and leads in 3 of 7 scored categories. Amazon Bedrock AgentCore Code Interpreter leads on security & auth. Both do sandbox code. Category scores…

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- Updated: 2026-10-09

Microsoft Execution Containers scores 76.3 (BB) on agent readiness against Amazon Bedrock AgentCore Code Interpreter's 73.1 (BB), and leads in 3 of 7 scored categories. Amazon Bedrock AgentCore Code Interpreter leads on security & auth. 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
- Microsoft Execution Containers: grade BB, 76.3/100, rank #35 of 842. Markdown https://www.anchorterminal.com/tools/microsoft-execution-containers.md · JSON https://www.anchorterminal.com/api/v1/tools/microsoft-execution-containers.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:
- Security & auth, 87 against 69

Also in its favour:
- A hosted endpoint, with nothing to install

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

### Microsoft Execution Containers (BB)

Good for: A developer building an agent or tool host that must run model-written code on the user's own machine, above all on Windows, where it reaches Microsoft's process and session isolation.

Ahead on:
- Payments & pricing, 60 against 30
- Maintenance & community, 92 against 65
- Transparency & trust, 83 against 70

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

Watch for: 1.0.0 shipped on 6 October 2026, and the Node changelog still lists the V1 changes under Unreleased


## Score by category

| Category | Weight | Amazon Bedrock AgentCore Code Interpreter | Microsoft Execution Containers | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 85 | 81 | Amazon Bedrock AgentCore Code Interpreter +4 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 81 | 81 | even |
| Agent ergonomics | 13% (16.2 this run) | 75 | 74 | Amazon Bedrock AgentCore Code Interpreter +1 |
| Security & auth | 14% (17.5 this run) | 87 | 69 | Amazon Bedrock AgentCore Code Interpreter +18 |
| Payments & pricing | 10% (12.5 this run) | 30 | 60 | Microsoft Execution Containers +30 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 65 | 92 | Microsoft Execution Containers +27 |
| Transparency & trust | 7% (8.8 this run) | 70 | 83 | Microsoft Execution Containers +13 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **73.1 · BB** | **76.3 · BB** | |

## Facts side by side

| Fact | Amazon Bedrock AgentCore Code Interpreter | Microsoft Execution Containers |
| --- | --- | --- |
| Kind | HTTP API | SDK + MCP |
| Vendor | Amazon Web Services | Microsoft |
| 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 | Free |
| 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 | MIT |
| Read-only variant documented | no | yes |
| llms.txt | yes | no |
| Last release | 2026-10-07 | 2026-10-06 |
| Terms last updated | 2026-10-01 | no document linked |
| Privacy policy last updated | 2026-05-18 | couldn't be read |
| Customer content may train models | yes, with an opt-out |  |
| Terms restrict automated access | yes |  |
| Terms restrict benchmarking | yes |  |
| Terms or service can change without notice | yes |  |
| Arbitration or class-action waiver | not found in the text |  |
| Popularity | 776 stars, 335k npm/wk | 1.5k stars, 472k npm/wk |

## 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.

**Microsoft Execution Containers.** MXC puts nine operating-system sandbox backends behind one typed request, with network access denied by default and a JSON Schema for the stable 1.0.0 contract. Version 1.0.0 is two days old as of 8 October 2026. Enforcement varies by backend, and `isolation_session` cannot restrict networking at all.

## 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

### Microsoft Execution Containers

1. Import from `@microsoft/mxc-sdk/v1`. The package root exports nothing.
2. Call `getPlatformSupport()` first and stop if `isSupported` is false. `getAvailableBackends()` is advisory and launch-time validation still applies.
3. Set `network.egress.default` to `allow` only when the task needs it. Omitted network policy resolves to deny in every direction.
4. Never pass `--audit` to an executor for untrusted code. It turns off all sandbox security for the workload.
5. Read `ExecutionResult.warnings` after each run. Security warnings arrive there and are not written to stdout or stderr.

## Questions

### Which is better for AI agents, Amazon Bedrock AgentCore Code Interpreter or Microsoft Execution Containers?

Microsoft Execution Containers scores 76.3 (BB) on agent readiness against Amazon Bedrock AgentCore Code Interpreter's 73.1 (BB), and leads in 3 of 7 scored categories. Amazon Bedrock AgentCore Code Interpreter leads on security & auth.

### Can an agent call Amazon Bedrock AgentCore Code Interpreter and Microsoft Execution Containers 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 Microsoft Execution Containers.

### Are Amazon Bedrock AgentCore Code Interpreter and Microsoft Execution Containers open source?

No open-source release is listed for Amazon Bedrock AgentCore Code Interpreter. Microsoft Execution Containers is open source (MIT).


## For agents

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

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