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antcrew

antcrew gives teams a shared control plane for AI agent workflows — with typed contracts that guarantee structured output, a full replay log of every decision, and human-in-the-loop gates that stop the automation before it does something it shouldn't.

Four components, one system

  • antcrew · Agent framework

    The Python package your team ships agent logic with. Built on LangGraph, it provides ready-made agent roles (PM, developer, reviewer…), a CLI to run pipelines locally, and integrations for Slack, Telegram, and more.

    pip install antcrew

    Engine SDK

  • antcrew-engine · Core SDK

    The low-level library powering the framework. Defines @contract for typed LLM calls, writes every token to a TraceLog, and exposes hitl_checkpoint() to pause execution for human review.

    pip install antcrew-engine

    Typed contracts

  • antcrew-platform · Cloud control plane

    The managed web application at antcrew.org. Receives runs from the engine, stores the full TraceLog, shows the live dashboard, and surfaces HITL review queues to your team.

    Platform

  • antcrew-proxy · LLM gateway

    An OpenAI-compatible proxy that routes model calls to any provider — OpenAI, Anthropic, Groq, Gemini — with BYOK key management and per-workspace routing rules.

    Proxy

How they connect

flowchart LR
    subgraph code["Your code"]
        AC["antcrew\nAgent framework + CLI"]
        ENG["antcrew-engine\n@contract · hitl_checkpoint"]
    end

    subgraph infra["antcrew infrastructure"]
        PX["antcrew-proxy\nLLM routing · BYOK"]
        AP["antcrew-platform\nRuns · Tickets · TraceLog · HITL"]
    end

    subgraph providers["LLM providers"]
        L1["OpenAI"]
        L2["Anthropic"]
        L3["Groq · Gemini · …"]
    end

    PM["👤 Team"] -->|"submit prompt"| AC
    AC --> ENG
    ENG -->|"model calls"| PX
    PX --> L1 & L2 & L3
    ENG -->|"runs · events\nHITL checkpoints"| AP
    REV["👤 Reviewer"] -->|"approve / reject"| AP
    AP -->|"resume signal"| ENG

antcrew and antcrew-engine live in your code. The platform is managed cloud — hosted at antcrew.org. The proxy can run anywhere: antcrew-managed or your own infra. The only coupling between them is a REST API and a model endpoint URL.

Start here

  • New to antcrew? Read A full team in action — a complete walkthrough from prompt to shipped code.
  • Ready to build? Follow the Quick start to connect your first agent pipeline in minutes.
  • Just the SDK? Jump to Typed contracts if you already have a platform account.