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Mastra vs souls.zip
Mastra is a TypeScript framework for creating agents; souls.zip delivers ready-made agents without coding.
Which to pick
Pick Mastra if you want…
- Typed AI agents with built-in observability
- TypeScript agent development
- Integrations with React, Next.js or Node (on Mastra's list, not souls.zip's)
Pick souls.zip if you want…
- Pre-built, research-backed agent souls
- A free, open-source tool
- Integrations with OpenClaw (on souls.zip'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.
- souls.zip:souls.zip is a marketplace of production-tested AI agent personalities, skills and team configurations for OpenClaw.
- Best for
- Mastra:Typed AI agents with built-in observability
- souls.zip:Pre-built, research-backed agent souls
- Who it’s for
- Mastra:TypeScript developers building AI-powered applications and agents.
- souls.zip:Teams building and deploying AI agents in production.
- Pricing
- Mastra:Freemium
- souls.zip:Free
- Plans
- Mastra:Starter $0 per month · Teams $250 per month
- souls.zip:—
- Open source
- Mastra:Yes, 28,481 GitHub stars
- souls.zip:Yes
- Works with
- Mastra:React, Next.js, Node, LibSQL, Postgres, Vite
- souls.zip:OpenClaw
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.
souls.zip features
- Production-tested souls. Agents that have run real jobs before being listed.
- Multi-agent team configs. Ready-made teams of agents for complex workflows.
- Reusable skill modules. Plug-in skills that can be added to any OpenClaw agent.
- Research library. 28 documents covering 7 domains, based on 166+ papers.
- Programmatic access. API to register, browse, download and publish agents.
- Free tier. Sign-up without credit card and start using agents immediately.
Mastra vs souls.zip FAQ
Is Mastra or souls.zip free?+
Mastra has a free plan (Starter); paid plans start at $250/month (Teams). souls.zip is free.
Which is cheaper, Mastra or souls.zip?+
souls.zip is free, so it costs less. Mastra starts at $250/month (Teams).
Is Mastra or souls.zip open source?+
Yes, both are open source: Mastra (mastra-ai/mastra on GitHub) and souls.zip (tolibear/souls-cli on GitHub).
Do Mastra and souls.zip integrate with the same tools?+
Their integration lists don't overlap: Mastra lists React, Next.js, Node, LibSQL and 2 more; souls.zip lists OpenClaw.
On DevHunt
Based on each tool's website and DevHunt data. Details may change; check the official sites.