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OrchestrationLangGraph
Graph-based orchestration for stateful, multi-actor agent workflows with explicit control flow and checkpointing.
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LLM / inferenceOpenRouter
A single OpenAI-compatible API that routes to 300+ LLMs from every major provider, with per-key budgets and programmatic key provisioning.
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The Minimal Agent Stack — FAQ
What is Minimal Agent Stack?
The two pieces you actually can't skip. It pairs LangGraph, OpenRouter — one tool per job. A weekend build or a proof of concept — orchestration + a model gateway, nothing else.
Can I change the tools?
Yes — open this stack in the builder and swap any pick, filter by open-source / hosted-API / agent-self-signup, then copy or share the result. Nothing is locked in.
Is it free to use this stack?
The stack, this page, and the builder are free. Each tool has its own pricing, shown on its detail page.
Can an AI agent use this stack?
Yes — it's machine-readable at /api/stack.json?memory=none&retrieval=none&vectordb=none&evals=none, so an agent can request these exact picks (with signup URLs and MCP flags) and act on them.