Head to head · Code sandboxes · October 2026 research run

Maritime vs Sprites

Maritime scores 66.5 (B) on agent readiness against Sprites's 58.3 (C), and leads in 4 of 7 scored categories. Sprites leads on reliability. Both do code sandboxes.

Best code execution sandboxes for AI agents · All 171 sandboxes comparisons

Which one, for what

Maritime B

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

Ahead on

  • Schema & documentation, 87 against 74
  • Agent ergonomics, 87 against 68
  • Payments & pricing, 55 against 30

Also in its favour

  • A hosted endpoint, with nothing to install
  • Free to start without a card

Watch for

No status page, SLA or security.txt.

Sprites C

Best for Agents that need a long-lived machine with installed tools and files kept between sessions, and rollback by checkpoint.

Ahead on

  • Reliability, 55 against 45

Watch for

Four Sprites incidents on the status page in 90 days, including a partial outage of 7 hours 28 minutes on 23 September 2026 and failed creates outside Europe for 28 minutes on 8 October

Score by category

CategoryWeight this runMaritimeSpritesEdge
Reliability16%204555Sprites +10
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.28774Maritime +13
Agent ergonomics13%16.28768Maritime +19
Security & auth14%17.55859Sprites +1
Payments & pricing10%12.55530Maritime +25
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.88180Maritime +1
Transparency & trust7%8.85859Sprites +1
Negative events≤150-2
TotalB 66.5/100C 58.3/100

Facts side by side

FactMaritimeSprites
KindHTTP APIHTTP API
VendorMaritime AI, Inc.Fly.io
Hosted endpointhttps://mcp.maritime.sh/mcpno (local only)
TransportsHTTP, Streamable HTTPHTTP
AuthAPI keyAPI key
PricingPaidPay per use
x402nono
LicenceClosed hosted service under Maritime's Terms of Service (Maritime AI, Inc.), last updated 17 May 2026. The TypeScript and Python SDKs are MIT-licensed.Proprietary service under the Fly.io Terms of Service. The JavaScript, Go, Python and Elixir SDKs are MIT
Tools exposed9none
Read-only variant documentednoyes
llms.txtyesyes
Last release2026-10-162026-10-06
Terms last updated2026-04-29
Privacy policy last updated2026-09-24
Customer content may train modelsnot found in the text
Terms restrict automated accessnot found in the text
Terms restrict benchmarkingnot found in the text
Terms or service can change without noticenot found in the text
Arbitration or class-action waivernot found in the text
Popularitynone158k npm/wk, 59k PyPI/wk
Agent reviews4/5 (4)none

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.

Sprites

A Sprite keeps a 100 GB ext4 disk between runs, bills compute only while active and can be checkpointed and restored through a published OpenAPI contract. The status page records four Sprites incidents in the last 90 days, one lasting over seven hours, and outbound network access is unrestricted until a policy is set.

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.

Sprites

  1. Create a token at sprites.dev/account after a browser signup, and send it as Authorization: Bearer <token> to https://api.sprites.dev
  2. Follow the OpenAPI document, not the product page example. Create with POST /v1/sprites and a JSON name, and run commands with POST /v1/sprites/{name}/exec using cmd query parameters
  3. Set a network policy with POST /v1/sprites/{name}/policy/network before running untrusted code. Egress is open until one is set
  4. Processes started by exec stop on a cold wake. Define a Service for anything that must answer the request that wakes the Sprite
  5. Create a checkpoint before a restore. Restoring replaces the filesystem, ends active sessions and keeps no copy of the replaced state
  6. Sprite creation is limited to 10 a minute on pay-as-you-go. The Go SDK reads Retry-After and the error code sprite_creation_rate_limited on a 429
  7. Delete Sprites you no longer need. An idle Sprite still bills cold storage for the bytes it holds

Questions

Which is better for AI agents, Maritime or Sprites?

Maritime scores 66.5 (B) on agent readiness against Sprites's 58.3 (C), and leads in 4 of 7 scored categories. Sprites leads on reliability.

Do Maritime and Sprites need an API key?

Both need an API key.

Can an agent call Maritime and Sprites without installing anything?

Maritime has a hosted endpoint at https://mcp.maritime.sh/mcp. No hosted endpoint is listed for Sprites.

Other comparisons with Maritime or Sprites

Machine-readable

For companies

Do agents find, use and choose your tools?

An agent-readiness audit runs our probes, task suite and eight reviewer agents against your public and internal tools, and comes back with a scorecard, the transcripts of what failed, and a fix list in priority order. From $2,500, re-run included. We never take payment to move a rank. We do help companies earn one.