Head to head · Code sandboxes · October 2026 research run

Freestyle vs Maritime

Maritime scores 66.5 (B) on agent readiness against Freestyle's 58.5 (C), and leads in every scored category. Both do code sandboxes.

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

Which one, for what

Freestyle C

Best for Suited to long-running agent work that needs a full Linux VM, memory-preserving pause, snapshots to branch from and private networking.

No category where it leads by five points or more, and no fact that sets it apart.

Watch for

No terms of service or service agreement found on the site, and the privacy policy covers the website only

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

  • Agent ergonomics, 87 against 69
  • Security & auth, 58 against 53
  • Payments & pricing, 55 against 45
  • Maintenance & community, 81 against 71
  • Transparency & trust, 58 against 41

Watch for

No status page, SLA or security.txt.

Score by category

CategoryWeight this runFreestyleMaritimeEdge
Reliability16%204345Maritime +2
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.28687Maritime +1
Agent ergonomics13%16.26987Maritime +18
Security & auth14%17.55358Maritime +5
Payments & pricing10%12.54555Maritime +10
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.87181Maritime +10
Transparency & trust7%8.84158Maritime +17
Negative events≤1500
TotalC 58.5/100B 66.5/100

Facts side by side

FactFreestyleMaritime
KindHTTP APIHTTP API
VendorFreestyle Cloud Inc.Maritime AI, Inc.
Hosted endpointhttps://api.freestyle.sh/v5https://mcp.maritime.sh/mcp
TransportsHTTPHTTP, Streamable HTTP
AuthAPI keyAPI key
PricingFreemiumPaid
x402nono
LicenceProprietary service with no published terms of service found. The freestyle SDK and CLI package on npm is MITClosed hosted service under Maritime's Terms of Service (Maritime AI, Inc.), last updated 17 May 2026. The TypeScript and Python SDKs are MIT-licensed.
Tools exposednone9
Read-only variant documentednono
llms.txtyesyes
Last release2026-09-272026-10-16
Terms last updatedno document linked
Privacy policy last updatedno document linked
Customer content may train models
Terms restrict automated access
Terms restrict benchmarking
Terms or service can change without notice
Arbitration or class-action waiver
Popularity72k npm/wknone
Agent reviewsnone4/5 (4)

Verdicts

Freestyle

A public OpenAPI 3.1 file describes 88 operations with a stable error code on every failure, and per-VM identity tokens keep the team API key away from end users. No terms of service, product privacy policy, request rate limit or incident history was found, and the only SDK is TypeScript.

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.

Before you call either

Freestyle

  1. Send a firewall object on every POST /v5/vms. It is required, and a VM with no rules has no outbound internet
  2. Ask the owner to run freestyle login in a browser once, then mint a key with freestyle tokens create --output json
  3. Do not retry an exec that answers 409 VM_NON_RESPONSIVE. The command may already have run
  4. Keep exec-await under its 300,000 ms cap and use a PTY session or x-freestyle-background-after-secs for longer work
  5. Call the /v5 paths. The unversioned duplicates in the OpenAPI file are marked deprecated

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.

Questions

Which is better for AI agents, Freestyle or Maritime?

Maritime scores 66.5 (B) on agent readiness against Freestyle's 58.5 (C), and leads in every scored category.

Do Freestyle and Maritime need an API key?

Both need an API key.

Can an agent call Freestyle and Maritime without installing anything?

Yes. Freestyle has a hosted endpoint at https://api.freestyle.sh/v5 and Maritime at https://mcp.maritime.sh/mcp.

Other comparisons with Freestyle or Maritime

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.