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Welcome to Runstack

Runstack is a cognitive layer that abstracts infinitely scalable toolkits so that any LLM can discover and use the right tools on demand.

Source: https://runstack.engineer/docs

Runstack is a cognitive layer that sits between your agents and the real world. It abstracts infinitely scalable toolkits — each toolkit is a curated collection of tools for a product or domain — so models never need a giant, fixed tool list in context. They discover what they need, when they need it.

What we provide

  • 1,000+ toolkits (and growing) — Scale over time. Add your own toolkit and tools, or request new tools inside an existing toolkit.
  • MCP server — Expose Runstack to Claude Desktop, Cursor, ChatGPT, Codex, and any MCP-compatible client over HTTP or stdio.
  • SDK for chat apps — @rnsk/tools — Drop Runstack into in-app chat and agent loops so users can act on connected services from your product.
  • Toolkit registry — @rnsk/toolkits — Open-source manifests and tool implementations; build private connectors or contribute new toolkits to the ecosystem.
  • Runstack Studio — Visual agent builder with workflows, conditions, and an AI assistant. Publish agents to the marketplace and invoke them in chat with /command.
  • Knowledge bases — @rnsk/brain — Create knowledge bases and share them with any agent so answers stay grounded in your docs and data.
  • Telemetry — Inspect API usage and tool execution history for your workspace keys.
  • @rnsk/bot — Ship a chatbot with UI fast: a prebuilt chat interface you import and wire to Runstack—no need to build screens from scratch.
  • @rnsk/tui — For developers who live in the terminal: rnsk chat with your agents and toolkits — same registry and auth as the web app.

Quick navigation

  • Getting Started: Create an API key, connect a service, and run your first tool in minutes.
  • Orgs and Workspaces: Personal vs Team organizations, workspace isolation, and team collaboration.
  • Runstack Agent: Workspace chat — attach files, add context, switch models, and manage conversations.
  • Runstack Studio: Build agent workflows, publish to the marketplace, and invoke agents with slash commands.
  • Toolkits: Browse toolkits, link OAuth services, and see what is available today.
  • API Keys: Create keys, set usage limits, and authenticate MCP and SDK requests.
  • MCP Tools: Meta tools reference and HTTP endpoint for Runstack MCP.
  • @rnsk/tools: Add Runstack tools to chat and AI SDK workflows in your application.
  • @rnsk/toolkits: Open-source toolkit registry — build and publish custom connectors.
  • Whitelabelling: Brand OAuth and connection flows with your logo and company name.