AgentSandboxes
A source-linked directory of cloud sandbox providers for AI agents, browsable by category and queryable via free REST API and MCP endpoint.
Are you the maker? Claim this listing to keep info, pricing and screenshots current. Verified via your tool's domain email.
AgentSandboxes is the right starting point for a developer who needs to compare cloud sandbox providers on concrete specs like cold start, isolation class, GPU support, and pricing, all cited back to vendor docs. The directory itself is free to use, but it is a reference index, not a tool that runs or manages sandboxes, so anyone expecting execution infrastructure should look elsewhere. Teams already committed to a specific provider will find little reason to return after their initial research.
What is AgentSandboxes?
AgentSandboxes lists cloud sandbox providers for AI agents. Each listing shows isolation, cold start, persistence, GPU support, pricing and free tier from the vendor's own docs, with every fact linked to its source. Browse by category, compare providers side by side, or query listings through the free REST API and MCP endpoint with no key needed.
How we scored AgentSandboxes
Capability scores in the mid-teens because AgentSandboxes does one narrow job, provider research, and does it well with source-linked specs and a genuinely useful MCP endpoint, but it has no execution, orchestration, or monitoring capability whatsoever, which limits its utility compared to tools that help users act on the research. Ease of use is high: no account, no key, and a clean browsing interface mean near-zero onboarding friction. Value is reasonable for end users since browsing is free, but the escalating price mechanic on vendor tiers ($9/$19/$29 doubling after every 10 sales) introduces real unpredictability for providers budgeting a listing. Delivery scores low because no independent user sentiment could be found to verify that the directory's listings are accurate, current, or meaningfully complete; the only third-party mention found was a GitHub submission that appears to originate from the creator, which is a thin evidence base for a product whose entire value proposition rests on data reliability.
Pros and cons
What we liked
- Every listing fact is cited to the vendor's own documentation, reducing the risk of stale or marketing-inflated specs.
- The keyless MCP endpoint at agentsandboxes.fyi/mcp lets AI coding tools query the index directly, a practical integration most directories do not offer.
- Browsing, filtering, and API access are all free with no account required, making it a zero-friction research starting point.
Where it falls short
- The directory covers only sandbox providers; it has no capability to help users deploy, configure, or switch between the providers it lists, so its usefulness ends at the research stage.
- Vendor listing prices double after every 10 sales, meaning early-mover providers pay $9/month while later entrants could face $18/month or more for the same Verified tier, a pricing mechanic that is unusual and hard to plan around.
- There is no free tier for vendor analytics; the Featured plan at $19/month is the entry point for any listing performance data, and the refund policy is all-sales-final with no partial-period exceptions.
Key features
AgentSandboxes pricing
Browsing the directory is free with no account required. Vendor listings are available on paid plans: Verified by vendor at $9/month, Featured at $19/month, and Sponsored placement at $29/month. The site notes prices double after every 10 sales. All sales are final with no refunds.
| Plan | Price | Who it is for |
|---|---|---|
| Free | Free | Public provider listing on the directory. No verified badge, no analytics, one photo, and a nofollow/ugc website link. |
| Verified by vendor | $9.00/month | Verified-by-vendor badge, ability to edit your listing, up to 5 photos, and a sponsored-type website link. Price doubles after every 10 sales. |
| Featured | $19.00/month | Everything in Verified plus a clearly marked featured placement in the first row of the apps page, listing analytics, up to 20 photos, and an ad-free listing page. Price doubles after every 10 sales. |
| Sponsored placement | $29.00/month | A labeled sponsored slot on one category page of the vendor's choice (one slot per page), plus all Featured benefits including analytics and ad-free page. Price doubles after every 10 sales. |
Pricing reflects what we saw at time of review (2026-10). Always confirm current pricing on the tool's own site.
Who should use AgentSandboxes?
AI engineers and backend developers who are early in the process of choosing a cloud sandbox provider will get the most out of AgentSandboxes. The source-linked specs save real time compared to manually cross-referencing documentation across E2B, Modal, Fly.io, Cloudflare Workers, and similar providers. It is also useful for teams building internal tooling or agent frameworks who want to expose sandbox options to their own systems via the MCP endpoint, since no API key is required.
Anyone who needs to actually run agents, not just pick a provider, should look elsewhere. Orkas, which is already in this directory, is a better fit if you want a local-first desktop environment where AI agents coordinate and execute complex workflows end to end. If your need is scheduled, unattended agent execution rather than provider research, Cronloop is the more direct answer.
Skip it if: Anyone who needs to actually run or orchestrate AI agents, not just compare hosting options.
Frequently asked questions
Does AgentSandboxes cost anything to use as a developer?+
No. Browsing the directory, filtering by category, comparing providers, and calling the REST API or MCP endpoint all require no account and no payment.
What does the MCP endpoint actually do?+
The MCP endpoint at agentsandboxes.fyi/mcp uses Streamable HTTP and requires no API key. It lets AI assistants or agent frameworks query the sandbox provider index directly, so a coding tool can pull provider specs without a human visiting the site.
How much does it cost to list a sandbox provider?+
A basic public listing is free. Verified-by-vendor status costs $9/month, Featured placement costs $19/month, and a Sponsored category-page slot costs $29/month. All prices are stated to double after every 10 sales, and all sales are final with no refunds.
Does paying for a listing change the facts shown about a provider?+
No. The site states explicitly that paid status changes only the badge or placement. Every claim still requires a cited vendor source regardless of which plan a provider is on.
Can AgentSandboxes help me deploy or run AI agents?+
No. It is a research and comparison directory only. It tells you which providers exist and what their documented specs are; it does not provide any execution, orchestration, or deployment capability.
What data does each listing include?+
Listings cover isolation class, cold start behavior, persistence options, GPU support, pricing, and free tier availability, all sourced from vendor documentation with individual facts linked to their source pages.
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