CubeSandbox vs Loomal: Features, Pricing & Which Is Better (2026)

A side-by-side comparison of CubeSandbox and Loomal — features, pricing, and ideal use cases — to help you decide which AI tool fits your workflow.

CubeSandbox

TencentCloud

Free

Open-source, hardware-isolated sandbox service for AI agents — sub-60ms cold start, <5MB overhead, E2B-SDK compatible.

Sub-60ms Cold Start: Average <60ms boot time and <5MB memory overhead per instance, so a single node can run thousands of agents.
Hardware-Level Isolation: Each sandbox gets its own Guest OS kernel on RustVMM/KVM — no Docker shared-kernel escape surface for LLM-generated code.
E2B SDK Compatibility: Drop-in replacement for the E2B SDK — swap one URL env var and existing agent code runs unchanged.
AutoPause / AutoResume: Idle sandboxes automatically suspend and wake on the next request for aggressive cost optimization.
Snapshot, Clone & Rollback: CubeCoW copy-on-write engine takes 100ms-granularity checkpoints so agents can fork, roll back, or replay any saved state.
Credential Vault: Agents call LLMs and external APIs through a proxy — keys never enter the sandbox, model context or logs.
Egress Control: Per-sandbox domain allowlists with instant block on unauthorized egress and full audit logs for compliance.
Web Console & Templates: In-browser dashboard at :12088 for managing sandboxes, nodes, version matrix and OCI-image-based templates.

Running Untrusted LLM Code: Execute Python/shell that a model wrote without risking the host through hardware isolation.
E2B Migration: Move existing E2B-based agent workloads to on-prem/self-hosted infrastructure with zero code changes.
High-Density Agent Fleets: Host thousands of concurrent agent sandboxes on a single node thanks to sub-60ms boot and 5MB overhead.
Agent Snapshotting: Save state before a risky tool call and roll back on failure using CubeCoW snapshots.
Compliance-Sensitive Agents: Enforce egress domain allowlists and audit logs for regulated environments.
Self-Hosted Agent Infra: Deploy a multi-node cluster with the built-in Terraform module for private-cloud AI agent workloads.

Freemium

Payments layer for agentic commerce — paywall any API, MCP tool, or store so AI agents can pay in USDC on Base per request.

Five-Line Paywall SDK: Wrap any Express, Hono, Next.js, or FastAPI handler with requirePayment to charge agents per call.
x402 Protocol Support: Uses HTTP 402 Payment Required as a real payment rail, so auth and payment happen in one round trip with no API keys.
USDC on Base Settlement: Payments settle on-chain in seconds; sellers keep custody of funds in their own wallet.
Per-Request Micropayments: Charge anywhere from a tenth of a cent to a dollar per call, enabling models the card networks cannot serve.
Signed Receipts: Every sale returns an Ed25519 receipt sellers can verify offline for provable, auditable revenue.
Hosted Endpoint Option: Paste JSON or upload a file and Loomal will host and paywall it at a URL agents can pay to hit.
Marketplace Discovery: A public marketplace lets agents discover paid APIs and MCP tools hosted through Loomal.
Broad Agent Compatibility: Works with any agent runtime that speaks x402 — Claude, GPT, Gemini, LangChain, CrewAI, MCP clients.

Monetizing an API: Turn a paid tier of a REST API into per-call micropayments that agents can buy without human onboarding.
Selling MCP Tools: Charge for premium MCP tools that agents in Claude Code, Cursor, or Windsurf install.
Data Vendor Distribution: Let agents buy scraped or curated datasets per query with no contracts or seats.
Hosted Content Paywalls: Sell access to a hosted JSON endpoint or uploaded file to agents that discover it in Loomal's marketplace.
Storefront Access (Coming): Add agentic checkout to a Shopify or WooCommerce store so AI shopping agents can transact directly.
SaaS Usage Billing: Bill agent traffic per action instead of per seat, aligning revenue with actual agent consumption.