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KervanPREVIEW

Kervan: MCP servers from a YAML spec or TypeScript.

Kervan is a framework for Model Context Protocol servers. Describe HTTP tools in a kervan.yaml file and serve them with one command, or write tools in TypeScript on the official MCP SDK — both run on the same core.

Visit getkervan.dev Documentation
Kervan Studio editor with a kervan.yaml spec open

// HIGHLIGHTS

  • YAML or TypeScript

    A spec for tools that call HTTP APIs, code for everything else. Once registered, both behave the same.

  • Secure by default

    SSRF protection, secret redaction, per-tool rate limits and sandboxed response selection — each covered by tests.

  • Runs anywhere

    stdio for local clients, stateless Streamable HTTP for remote ones, or a standard Fetch handler.

  • Optional Studio

    A self-hosted web UI for servers, secrets, users and logs. Every server still exports as plain kervan.yaml.

// AT A GLANCE

Status
Preview — v0.1 in preparation
License
MIT, open source
Runtime
TypeScript on Node.js 22 or 24
Protocol
Model Context Protocol (MCP)