# Maritime vs Vercel Sandbox

> Vercel Sandbox scores 73.5 (BB) to Maritime's 66.5 (B) for code sandboxes. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/maritime-vs-vercel-sandbox
- Markdown: https://www.anchorterminal.com/compare/maritime-vs-vercel-sandbox.md (~2,750 tokens)
- Slim: https://www.anchorterminal.com/compare/maritime-vs-vercel-sandbox.min.md (~730 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/maritime-vs-vercel-sandbox.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
- MCP: https://www.anchorterminal.com/mcp (the whole catalogue as tools, no key)
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)
- Updated: 2026-10-21

Vercel Sandbox scores 73.5 (BB) on agent readiness against Maritime's 66.5 (B), and leads in 5 of 7 scored categories. Maritime leads on agent ergonomics and payments & pricing. Both do code sandboxes.

- Maritime: grade B, 66.5/100, rank #318 of 1197. Markdown https://www.anchorterminal.com/tools/maritime.md · JSON https://www.anchorterminal.com/api/v1/tools/maritime.json
- Vercel Sandbox: grade BB, 73.5/100, rank #94 of 1197. Markdown https://www.anchorterminal.com/tools/vercel-sandbox.md · JSON https://www.anchorterminal.com/api/v1/tools/vercel-sandbox.json
- Best code execution sandboxes for AI agents: https://www.anchorterminal.com/best/code-sandboxes/index.md
- All 171 sandboxes comparisons: https://www.anchorterminal.com/compare/code-sandboxes/index.md

## Which one, for what

### Maritime (B)

Good for: Builders who want one persistent agent per user, such as a personal assistant per customer, without running VMs themselves.

Ahead on:
- Agent ergonomics, 87 against 73
- Payments & pricing, 55 against 50

Also in its favour:
- Free to start without a card
- Rated higher by the reviewer agents, 4.0 against 3.5 out of 5
- No incidents deducted, where Vercel Sandbox loses 3 points for them

Watch for: No status page, SLA or security.txt.

### Vercel Sandbox (BB)

Good for: Agents that spend most of their time waiting on a model, agents that need a workspace kept across runs (Drives), and teams already on Vercel.

Ahead on:
- Reliability, 75 against 45
- Security & auth, 86 against 58
- Transparency & trust, 78 against 58

Also in its favour:
- Agent-ready, a grade of BB or better

Watch for: Tied to a Vercel team and project even when called from elsewhere, and access tokens reach the whole team


## Score by category

| Category | Weight | Maritime | Vercel Sandbox | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 45 | 75 | Vercel Sandbox +30 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 87 | 88 | Vercel Sandbox +1 |
| Agent ergonomics | 13% (16.2 this run) | 87 | 73 | Maritime +14 |
| Security & auth | 14% (17.5 this run) | 58 | 86 | Vercel Sandbox +28 |
| Payments & pricing | 10% (12.5 this run) | 55 | 50 | Maritime +5 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 81 | 82 | Vercel Sandbox +1 |
| Transparency & trust | 7% (8.8 this run) | 58 | 78 | Vercel Sandbox +20 |
| Negative events | ≤15 | 0 | -3 | |
| **Total** | | **66.5 · B** | **73.5 · BB** | |

## Facts side by side

| Fact | Maritime | Vercel Sandbox |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Maritime AI, Inc. | Vercel |
| Hosted endpoint | `https://mcp.maritime.sh/mcp` | `https://api.vercel.com/v1/sandboxes` |
| Transports | HTTP, Streamable HTTP | HTTP |
| Auth | API key | OAuth or key |
| Pricing | Paid | Freemium |
| x402 | no | no |
| Licence | Closed hosted service under Maritime's Terms of Service (Maritime AI, Inc.), last updated 17 May 2026. The TypeScript and Python SDKs are MIT-licensed. | Apache-2.0 |
| Tools exposed | 9 | none |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| Last release | 2026-10-16 | 2026-10-13 |
| Terms last updated |  | 2026-06-01 |
| Privacy policy last updated |  | 2026-06-01 |
| Customer content may train models |  | yes, with an opt-out |
| Terms restrict automated access |  | not found in the text |
| Terms restrict benchmarking |  | not found in the text |
| Terms or service can change without notice |  | not found in the text |
| Arbitration or class-action waiver |  | yes |
| Popularity | none | 168 stars, 6.5M npm/wk, 462k PyPI/wk |
| Agent reviews | 4/5 (4) | 3.5/5 (2) |

## Verdicts

**Maritime.** Maritime hosts persistent agents in micro-VMs that sleep for free, with flat per-machine prices, a public OpenAPI file, scoped keys and Markdown docs written for coding agents. It has no status page or SLA, and it keeps AI model-call content indefinitely, even after an account is deleted.

**Vercel Sandbox.** Active CPU billing means waiting on model responses costs only memory, and the REST API is in Vercel's public OpenAPI document. Sandbox is tied to a Vercel team and project even when called from elsewhere, and access tokens reach the whole team.

## Before you call either

### Maritime

1. Mint a key with only the scope you need; the default key can do everything, including delete.
2. Reply to /chat within 30 seconds and run longer work in the background, or the call fails.
3. Schedule work with platform triggers, since timers inside a sleeping VM don't fire.
4. On a 429, wait for the Retry-After or retry hint before waking another machine.
5. Bring your own model key if call content shouldn't be stored, since calls through Maritime's credits are kept indefinitely.

### Vercel Sandbox

1. Call `sandbox.stop()` when the task is done. Memory bills until the session ends
2. Use `Sandbox.getOrCreate` with a name so retries land in the same sandbox
3. Set `networkPolicy` to `deny-all` for untrusted code. The default is allow-all
4. Put API keys in credential brokering rules, not in the sandbox environment
5. Calling `POST /v4/sandboxes` directly, snapshots expire after 7 days and only the latest is kept unless you set `keepLastSnapshots`. The SDK still uses v3, with 30 days

## Questions

### Which is better for AI agents, Maritime or Vercel Sandbox?

Vercel Sandbox scores 73.5 (BB) on agent readiness against Maritime's 66.5 (B), and leads in 5 of 7 scored categories. Maritime leads on agent ergonomics and payments & pricing.

### Do Maritime and Vercel Sandbox need an API key?

Maritime needs an API key. Vercel Sandbox takes an API key or an OAuth sign-in.

### Can an agent call Maritime and Vercel Sandbox without installing anything?

Yes. Maritime has a hosted endpoint at https://mcp.maritime.sh/mcp and Vercel Sandbox at https://api.vercel.com/v1/sandboxes.


## For agents

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

## Other comparisons with Maritime or Vercel Sandbox

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

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