Kilntainers vs Sevalla MCP Server

Choosing between Kilntainers and Sevalla MCP Server? Both are cloud services MCP servers, but they lean into different workflows. This page focuses on where each one is actually stronger, not just raw counts.

Choose Kilntainers for

Running untrusted code or shell commands safely without exposing host system secrets.

Choose Sevalla MCP Server for

Automating infrastructure management tasks directly from an AI coding assistant.

Kilntainers

36by Kiln-AIstdio

Give Every Agent an Ephemeral Linux Sandbox — via MCP

Best for Running untrusted code or shell commands safely without exposing host system secrets.

Kilntainers is an MCP server that gives LLM agents isolated Linux sandboxes for executing shell commands.

🧰 Multiple backends: Containers (Docker, Podman), cloud-hosted micro-VMs (Modal, E2B), and WebAssembly sandboxes (WASM BusyBox, or any WASM module). 🏝️ Isolated per agent: Every agent gets its own dedicated sandbox — no shared state, no cross-contamination. 🧹 Ephemeral:…

What it does

  • Isolated Linux sandboxes per agent session
  • Support for multiple backends including Docker, Podman, and WASM
  • Ephemeral lifecycle with automatic cleanup after session termination
  • Secure design preventing agent secret exposure to the sandbox
  • Scalable architecture for parallel agent execution

Available tools (1)

sandbox_execExecutes a Linux command within an isolated, ephemeral sandbox environment.
View Kilntainers details
vs

Sevalla MCP Server

6by sevalla-hostinghttp

Manage your entire Sevalla cloud infrastructure from AI agents.

Best for Automating infrastructure management tasks directly from an AI coding assistant.

Give AI agents full access to the Sevalla PaaS API. Just 2 tools.

A remote Model Context Protocol server that exposes the entire Sevalla PaaS API through just 2 tools instead of ~200. AI agents write JavaScript that runs in sandboxed V8 isolates to discover and call any API endpoint on demand.

What it does

  • Exposes the entire Sevalla PaaS API through two tools
  • Uses sandboxed V8 isolates for secure API execution
  • Reduces context window usage by approximately 99%
  • Supports OAuth authentication with no API keys required in config
  • Compatible with Claude Code, Cursor, Windsurf, and other MCP clients

Available tools (2)

searchQuery the OpenAPI spec to discover endpoints, parameters, and schemas.
executeRun JavaScript in a sandboxed V8 isolate that calls the API via sevalla.request().
View Sevalla MCP Server details

Biggest differences

CompareKilntainersSevalla MCP Server
Best forRunning untrusted code or shell commands safely without exposing host system secrets.Automating infrastructure management tasks directly from an AI coding assistant.
StandoutIsolated Linux sandboxes per agent session.Exposes the entire Sevalla PaaS API through two tools.
Setupuv, stdio transport.Claude Code or Cursor, http transport.
Transportstdiohttp
Community36 GitHub stars6 GitHub stars

Bottom line

Pick Kilntainers if...

Running untrusted code or shell commands safely without exposing host system secrets. Isolated Linux sandboxes per agent session. uv, stdio transport.

Pick Sevalla MCP Server if...

Automating infrastructure management tasks directly from an AI coding assistant. Exposes the entire Sevalla PaaS API through two tools. Claude Code or Cursor, http transport.

The real split here is workflow fit, not raw counts. Kilntainers: Running untrusted code or shell commands safely without exposing host system secrets. Sevalla MCP Server: Automating infrastructure management tasks directly from an AI coding assistant. Kilntainers also has the larger public footprint (36 vs 6 stars).

Keep the comparison logic in memory

Once you pick a server, keep the decision notes, setup rules, and docs in Conare so your agent can apply them again without re-explaining.

Open Conare
How to set up Kilntainers → How to set up Sevalla MCP Server →