zerolith.io
French-hosted FaaS platform controllable by AI agents via MCP — scale-to-zero, GB-second billing.
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What is zerolith.io?
Zerolith is a serverless function platform designed for AI agents and developers, enabling deployment of Python or Node.js functions with automatic scaling and pay-per-use pricing. AI agents can manage functions via MCP without sharing API keys, while developers use the dashboard or API—both approaches run on the same infrastructure hosted in France.
zerolith.io pricing
Pricing model: Freemium
Pay-per-use: €0.000004/GB-second (memory), €0.0000125/vCPU-second (CPU), €0.0000004/invocation. Free €5 credit on signup (≈10 million calls).
zerolith.io pros
- AI agent integration via MCP—Claude or other agents can deploy and invoke functions securely without credentials being exposed
- Pay-per-use with scale-to-zero—functions cost nothing when idle, charged only for CPU, memory, and invocations by the second
- Data sovereignty—hosted on OVH infrastructure in France with strict per-account Kubernetes isolation
- Unified experience—same underlying platform whether controlled manually or by an autonomous agent
zerolith.io cons
- Limited language support—currently only Python and Node.js; other languages listed as 'coming later'
- French-primary interface and documentation may present barriers for non-French-speaking developers
- Smaller ecosystem compared to established serverless platforms (AWS Lambda, Google Cloud Functions, Azure Functions)
Frequently asked questions about zerolith.io
Can I connect Claude or another AI agent to manage my functions?
Yes. Connect any MCP-compatible agent (including Claude) via MCP protocol. The agent can deploy, update, and invoke functions without requiring API keys to be shared.
What happens when my functions aren't being called?
Nothing—idle functions cost €0. You only pay when your code is executing, regardless of whether calls come from humans or agents.
Where is my data stored?
All functions and data remain on OVH servers operated in France, with strict per-account Kubernetes isolation.
Can I use Zerolith functions in production?
Yes. Functions can be private (protected by API key), public (webhooks), or scheduled (cron), with identical billing across all modes.