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Mastra vs WBX Sandbox
Short answer: Pick Mastra if you want typed AI agents with built-in observability; pick WBX Sandbox if you want secure sandboxes for AI agents. Mastra has a free plan, paid from $250/month; WBX Sandbox has a free plan, paid from $55/month.
MastraTypeScript framework for AI agents
WBX SandboxSecure execution for AI agents - Give your AI agents a safe place to run codeWhich to pick
Pick Mastra if you want…
- Typed AI agents with built-in observability
- TypeScript agent framework
- Open-source code (mastra-ai/mastra on GitHub)
- Integrations with React, Next.js or Node (on Mastra's list, not WBX Sandbox's)
Pick WBX Sandbox if you want…
- Secure sandboxes for AI agents
- The lower starting price: $55/month against $250/month
- Integrations with Python SDK or REST API (on WBX Sandbox's list, not Mastra's)
Side by side
- What it is
- Mastra:Mastra is an open-source TypeScript framework for building AI agents with memory, tools, workflows and observability.
- WBX Sandbox:WBX Sandbox runs AI-generated code in isolated Firecracker microVMs or WebAssembly with budgeting and audit receipts.
- Best for
- Mastra:Typed AI agents with built-in observability
- WBX Sandbox:Secure sandboxes for AI agents
- Who it’s for
- Mastra:TypeScript developers building AI-powered applications and agents.
- WBX Sandbox:Developers building AI agents that need secure code execution.
- Pricing
- Mastra:Freemium
- WBX Sandbox:Freemium
- Starting price
- Mastra:$250/month (Teams)
- WBX Sandbox:$55/month (Pro)
- Free plan or trial
- Mastra:Free plan (Starter)
- WBX Sandbox:Free plan (Free) · Free trial
- Plans
- Mastra:Starter $0 per month · Teams $250 per month
- WBX Sandbox:Free $0.00 · Pro $55.00 per month · Team $119.00 per month
- Open source
- Mastra:Yes, 28,481 GitHub stars
- WBX Sandbox:—
- Works with
- Mastra:React, Next.js, Node, LibSQL, Postgres, Vite
- WBX Sandbox:Python SDK, REST API
Mastra features
- Typed Agents. Define agents with instructions, models, tools and runtime behavior in TypeScript.
- Workflows. Compose multi-step, retryable, branchable workflows with typed control flow.
- Harness. Coordinate multi-mode agents with shared state, threads and storage.
- Memory. Durable observational memory with semantic recall and thread-aware storage.
- Observability. Logs, metrics, traces, datasets and signals for full runtime insight.
- Server & Studio. Run agents locally or in Mastra Cloud and manage them via a web studio.
WBX Sandbox features
- Isolated runtimes. Run code in full Linux microVMs or lightweight WASI modules with hardware or process isolation.
- Budget Guard. Reserve a maximum cost before execution and refuse jobs that would exceed limits.
- Execution receipts. Each run returns runtime, isolation, resource usage, file hashes and actual cost.
- Batch processing. Submit up to 1,000 jobs in one batch with concurrency control and dependency chaining.
- Native MCP integration. Connect via a single URL to ChatGPT, Claude and any MCP client without API keys.
- Fast start for WASM. WebAssembly jobs start in milliseconds, no VM boot time.
- Automatic lifecycle. Handles retries, timeouts, cleanup and sandbox disposal automatically.
- EU-operated servers. Runs on refurbished enterprise hardware located in the EU.
Mastra vs WBX Sandbox FAQ
What is the difference between Mastra and WBX Sandbox?+
Mastra is a TypeScript framework for building agents, not a runtime sandbox service.
Should I use Mastra or WBX Sandbox?+
Pick Mastra if you want typed AI agents with built-in observability, TypeScript agent framework or open-source code (mastra-ai/mastra on GitHub). Pick WBX Sandbox if you want secure sandboxes for AI agents, the lower starting price: $55/month against $250/month or integrations with Python SDK or REST API (on WBX Sandbox's list, not Mastra's).
Is Mastra or WBX Sandbox free?+
Mastra has a free plan (Starter); paid plans start at $250/month (Teams). WBX Sandbox has a free plan; paid plans start at $55/month (Pro).
Which is cheaper, Mastra or WBX Sandbox?+
WBX Sandbox is cheaper to start with: WBX Sandbox's Pro plan ($55/month) against Mastra's Teams plan ($250/month).
Is Mastra or WBX Sandbox open source?+
Mastra is open source (mastra-ai/mastra on GitHub). DevHunt has no public source repository on record for WBX Sandbox.
Do Mastra and WBX Sandbox integrate with the same tools?+
Their integration lists don't overlap: Mastra lists React, Next.js, Node, LibSQL and 2 more; WBX Sandbox lists Python SDK and REST API.
On DevHunt
Based on each tool's website and DevHunt data. Details may change; check the official sites.