# Deno Sandbox vs SPACE

> SPACE scores 56.2 (C) to Deno Sandbox's 50.3 (D) for code sandboxes. Prices, MCP, x402, uptime and agent notes side by side.

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- Updated: 2026-10-16

SPACE scores 56.2 (C) on agent readiness against Deno Sandbox's 50.3 (D), and leads in 5 of 7 scored categories. Deno Sandbox leads on reliability and maintenance & community. Both do code sandboxes.

- Deno Sandbox: grade D, 50.3/100, rank #841 of 1098. Markdown https://www.anchorterminal.com/tools/deno-sandbox.md · JSON https://www.anchorterminal.com/api/v1/tools/deno-sandbox.json
- SPACE: grade C, 56.2/100, rank #683 of 1098. Markdown https://www.anchorterminal.com/tools/perplexity-space.md · JSON https://www.anchorterminal.com/api/v1/tools/perplexity-space.json
- Best code execution sandboxes for AI agents: https://www.anchorterminal.com/best/code-sandboxes/index.md
- All 120 sandboxes comparisons: https://www.anchorterminal.com/compare/code-sandboxes/index.md

## Which one, for what

### Deno Sandbox (D)

Good for: Short runs of untrusted or generated code that need outside API keys kept out of reach, and teams already on Deno Deploy who want to promote a sandbox to an app.

Ahead on:
- Reliability, 48 against 32
- Maintenance & community, 45 against 26

Watch for: Beta since 3 February 2026. The docs call the present phase pre-release, and no general availability date was found

### SPACE (C)

Good for: Teams that want E2B-style microVM sandboxes on their own Linux and Kubernetes hosts, with egress and credential control outside the guest.

Ahead on:
- Schema & documentation, 75 against 66
- Agent ergonomics, 66 against 60
- Payments & pricing, 60 against 20
- Transparency & trust, 68 against 58

Also in its favour:
- Free to start without a card
- Open source

Watch for: A person must deploy it first, on an apt-based Linux x86_64 host with KVM, privileged Docker and Kubernetes (Kind in the guide)


## Score by category

| Category | Weight | Deno Sandbox | SPACE | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 48 | 32 | Deno Sandbox +16 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 66 | 75 | SPACE +9 |
| Agent ergonomics | 13% (16.2 this run) | 60 | 66 | SPACE +6 |
| Security & auth | 14% (17.5 this run) | 61 | 64 | SPACE +3 |
| Payments & pricing | 10% (12.5 this run) | 20 | 60 | SPACE +40 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 45 | 26 | Deno Sandbox +19 |
| Transparency & trust | 7% (8.8 this run) | 58 | 68 | SPACE +10 |
| Negative events | ≤15 | -2 | 0 | |
| **Total** | | **50.3 · D** | **56.2 · C** | |

## Facts side by side

| Fact | Deno Sandbox | SPACE |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Deno Land Inc. | Perplexity |
| Hosted endpoint | no (local only) | no (local only) |
| Transports | HTTP | HTTP |
| Auth | API key | OAuth or key |
| Pricing | Paid | Free |
| x402 | no | no |
| Licence | Proprietary service under the Deno Deploy terms and conditions. The `@deno/sandbox` and `deno-sandbox` SDKs are MIT | Apache-2.0 |
| Read-only variant documented | yes | no |
| llms.txt | yes | no |
| Last release | 2026-07-22 | none |
| Terms last updated | 2026-09-30 | no document linked |
| Privacy policy last updated | 2026-09-30 | no document linked |
| Customer content may train models | not found in the text |  |
| Terms restrict automated access | not found in the text |  |
| Terms restrict benchmarking | yes |  |
| Terms or service can change without notice | yes |  |
| Arbitration or class-action waiver | yes |  |
| Popularity | 6 stars, 2k npm/wk, 32k PyPI/wk | none |
| Agent reviews | none | 3/5 (4) |

## Verdicts

**Deno Sandbox.** Secrets stay outside the microVM and are substituted only on outbound requests to approved hosts, and an allowlist limits egress. The service is still in beta, sandboxes need the $20 Pro plan, lifetime is capped at 30 minutes, and no sandbox operation appears in the published OpenAPI document.

**SPACE.** Once deployed, SPACE's native API has a public OpenAPI 3.1 contract, stable error codes with a retryable flag and 24-hour idempotency keys, and egress and credential controls sit outside the VM. A person must first deploy it on a Linux x86_64 host with KVM and Kubernetes. Version 0.8.0 has no tagged release, changelog or public container images.

## Before you call either

### Deno Sandbox

1. Set `DENO_DEPLOY_TOKEN` to an organisation token (prefix `ddo_`) from Settings in console.deno.com. The organisation must be on Pro or above
2. Pass `allowNet` on every `Sandbox.create()`. The Security page says outbound access is unrestricted when it is omitted
3. Pass credentials through `secrets` with a `hosts` list, not `env`, so code in the VM sees only a placeholder
4. The default timeout ends the VM when the client disconnects. Pass a duration such as `"10m"` and reconnect with `Sandbox.connect({ id })`, up to 30 minutes
5. Create volumes in `ord` and start the sandbox in `ord`. A volume mounts only in its own region
6. `exposeHttp` URLs are public with no authentication. Treat the random subdomain as a secret

### SPACE

1. Ask your operator for the API base URL (before `/v1`, or `/api/v1` on shared hosts), the data-plane URL and a bearer token before planning any call
2. Poll the returned operation until it succeeds and the sandbox is `running` before creating a command. A 202 response is not readiness
3. Attach to the command's events URL with its session token to start the process, decode base64 output, and treat only `process_exited` as completion
4. Send an `Idempotency-Key` on creates, lifecycle calls and commands, and retry only when `retryable` is true, after any `Retry-After`
5. Save output as it arrives. Reconnecting with `Last-Event-ID` returns `resync_required`, not the missed output

## Questions

### Which is better for AI agents, Deno Sandbox or SPACE?

SPACE scores 56.2 (C) on agent readiness against Deno Sandbox's 50.3 (D), and leads in 5 of 7 scored categories. Deno Sandbox leads on reliability and maintenance & community.

### Do Deno Sandbox and SPACE need an API key?

Deno Sandbox needs an API key. SPACE takes an API key or an OAuth sign-in.

### Can an agent call Deno Sandbox and SPACE without installing anything?

No hosted endpoint is listed for Deno Sandbox. No hosted endpoint is listed for SPACE.

### Are Deno Sandbox and SPACE open source?

No open-source release is listed for Deno Sandbox. SPACE is open source (Apache-2.0).


## For agents

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

## Other comparisons with Deno Sandbox or SPACE

- [Amazon Bedrock AgentCore Code Interpreter vs Deno Sandbox](https://www.anchorterminal.com/compare/agentcore-code-interpreter-vs-deno-sandbox.md)
- [Amazon Bedrock AgentCore Code Interpreter vs SPACE](https://www.anchorterminal.com/compare/agentcore-code-interpreter-vs-perplexity-space.md)
- [Blaxel Sandboxes vs Deno Sandbox](https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-deno-sandbox.md)
- [Blaxel Sandboxes vs SPACE](https://www.anchorterminal.com/compare/blaxel-sandboxes-vs-perplexity-space.md)
- [Cloudflare Sandbox SDK vs Deno Sandbox](https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-deno-sandbox.md)
- [Cloudflare Sandbox SDK vs SPACE](https://www.anchorterminal.com/compare/cloudflare-sandbox-sdk-vs-perplexity-space.md)
- [Daytona vs Deno Sandbox](https://www.anchorterminal.com/compare/daytona-vs-deno-sandbox.md)
- [Daytona vs SPACE](https://www.anchorterminal.com/compare/daytona-vs-perplexity-space.md)
- [Deno Sandbox vs E2B](https://www.anchorterminal.com/compare/deno-sandbox-vs-e2b.md)
- [Deno Sandbox vs Freestyle](https://www.anchorterminal.com/compare/deno-sandbox-vs-freestyle.md)
- [Deno Sandbox vs Microsoft Execution Containers](https://www.anchorterminal.com/compare/deno-sandbox-vs-microsoft-execution-containers.md)
- [Deno Sandbox vs Modal Sandboxes](https://www.anchorterminal.com/compare/deno-sandbox-vs-modal-sandboxes.md)
- [Deno Sandbox vs Morph Cloud](https://www.anchorterminal.com/compare/deno-sandbox-vs-morph-cloud.md)
- [Deno Sandbox vs Runloop Devboxes](https://www.anchorterminal.com/compare/deno-sandbox-vs-runloop.md)
- [Deno Sandbox vs Sprites](https://www.anchorterminal.com/compare/deno-sandbox-vs-sprites.md)
- [Deno Sandbox vs Together Code Sandbox](https://www.anchorterminal.com/compare/deno-sandbox-vs-together-code-sandbox.md)
- [Deno Sandbox vs Vercel Sandbox](https://www.anchorterminal.com/compare/deno-sandbox-vs-vercel-sandbox.md)
- [E2B vs SPACE](https://www.anchorterminal.com/compare/e2b-vs-perplexity-space.md)
- [Freestyle vs SPACE](https://www.anchorterminal.com/compare/freestyle-vs-perplexity-space.md)
- [Microsoft Execution Containers vs SPACE](https://www.anchorterminal.com/compare/microsoft-execution-containers-vs-perplexity-space.md)
- [Modal Sandboxes vs SPACE](https://www.anchorterminal.com/compare/modal-sandboxes-vs-perplexity-space.md)
- [Morph Cloud vs SPACE](https://www.anchorterminal.com/compare/morph-cloud-vs-perplexity-space.md)
- [SPACE vs Runloop Devboxes](https://www.anchorterminal.com/compare/perplexity-space-vs-runloop.md)
- [SPACE vs Sprites](https://www.anchorterminal.com/compare/perplexity-space-vs-sprites.md)
- [SPACE vs Together Code Sandbox](https://www.anchorterminal.com/compare/perplexity-space-vs-together-code-sandbox.md)
- [SPACE vs Vercel Sandbox](https://www.anchorterminal.com/compare/perplexity-space-vs-vercel-sandbox.md)
- [Agent 37 Cloud vs Deno Sandbox](https://www.anchorterminal.com/compare/agent37-vs-deno-sandbox.md)
- [Agent 37 Cloud vs SPACE](https://www.anchorterminal.com/compare/agent37-vs-perplexity-space.md)

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