OpenEnv/docs/environments.md

# Environments

The OpenEnv community has built a catalog of ready-to-run environments that cover deterministic smoke tests, full developer workflows, and multi-step reasoning challenges. Explore the surface area below and jump directly into the guides for each environment.

## Community Environments

<div class="environment-grid">
  <div class="environment-card">
    <div class="environment-card__body">
      <span class="environment-card__tag">Echo</span>
      <p class="environment-card__description">
        Minimal observation/action loop for verifying client integrations, CI pipelines, and onboarding flows in seconds.
      </p>
    </div>
    <div class="environment-card__links">
      <a class="environment-card__icon" href="/OpenEnv/environments/echo/" aria-label="Echo docs">
        <svg viewBox="0 0 24 24" aria-hidden="true" focusable="false">
          <path d="M6 3c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V9l-6-6H6zm8 1.5L18.5 9H14V4.5z" fill="currentColor"/>
        </svg>
      </a>
      <a class="environment-card__icon environment-card__icon--hf" href="https://huggingface.co/spaces/openenv/echo_env" target="_blank" rel="noreferrer noopener" aria-label="Echo on Hugging Face">
        <img src="https://huggingface.co/front/assets/huggingface_logo-noborder.svg" alt="" aria-hidden="true" />
      </a>
    </div>
  </div>

  <div class="environment-card">
    <div class="environment-card__body">
      <span class="environment-card__tag">Coding</span>
      <p class="environment-card__description">
        Secure sandbox with filesystem access and evaluation hooks for executing generated code and building autonomous dev workflows.
      </p>
    </div>
    <div class="environment-card__links">
      <a class="environment-card__icon" href="/OpenEnv/environments/coding/" aria-label="Coding docs">
        <svg viewBox="0 0 24 24" aria-hidden="true" focusable="false">
          <path d="M6 3c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V9l-6-6H6zm8 1.5L18.5 9H14V4.5z" fill="currentColor"/>
        </svg>
      </a>
      <a class="environment-card__icon environment-card__icon--hf" href="https://huggingface.co/spaces/openenv/coding_env" target="_blank" rel="noreferrer noopener" aria-label="Coding on Hugging Face">
        <img src="https://huggingface.co/front/assets/huggingface_logo-noborder.svg" alt="" aria-hidden="true" />
      </a>
    </div>
  </div>

  <div class="environment-card">
    <div class="environment-card__body">
      <span class="environment-card__tag">Chat</span>
      <p class="environment-card__description">
        Message-driven loop tailored for conversational agents that need structured turns, safety rails, and message attribution.
      </p>
    </div>
    <div class="environment-card__links">
      <a class="environment-card__icon" href="/OpenEnv/environments/chat/" aria-label="Chat docs">
        <svg viewBox="0 0 24 24" aria-hidden="true" focusable="false">
          <path d="M6 3c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V9l-6-6H6zm8 1.5L18.5 9H14V4.5z" fill="currentColor"/>
        </svg>
      </a>
      <a class="environment-card__icon environment-card__icon--hf" href="https://huggingface.co/spaces/openenv/chat_env" target="_blank" rel="noreferrer noopener" aria-label="Chat on Hugging Face">
        <img src="https://huggingface.co/front/assets/huggingface_logo-noborder.svg" alt="" aria-hidden="true" />
      </a>
    </div>
  </div>

  <div class="environment-card">
    <div class="environment-card__body">
      <span class="environment-card__tag">Atari</span>
      <p class="environment-card__description">
        Classic Arcade Learning Environment tasks packaged for fast benchmarking of reinforcement-learning style agents.
      </p>
    </div>
    <div class="environment-card__links">
      <a class="environment-card__icon" href="/OpenEnv/environments/atari/" aria-label="Atari docs">
        <svg viewBox="0 0 24 24" aria-hidden="true" focusable="false">
          <path d="M6 3c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V9l-6-6H6zm8 1.5L18.5 9H14V4.5z" fill="currentColor"/>
        </svg>
      </a>
      <a class="environment-card__icon environment-card__icon--hf" href="https://huggingface.co/spaces/openenv/atari_env" target="_blank" rel="noreferrer noopener" aria-label="Atari on Hugging Face">
        <img src="https://huggingface.co/front/assets/huggingface_logo-noborder.svg" alt="" aria-hidden="true" />
      </a>
    </div>
  </div>

  <div class="environment-card">
    <div class="environment-card__body">
      <span class="environment-card__tag">OpenSpiel</span>
      <p class="environment-card__description">
        Multi-agent, game-theory workloads powered by DeepMind’s OpenSpiel suite, ideal for search and self-play experiments.
      </p>
    </div>
    <div class="environment-card__links">
      <a class="environment-card__icon" href="/OpenEnv/environments/openspiel/" aria-label="OpenSpiel docs">
        <svg viewBox="0 0 24 24" aria-hidden="true" focusable="false">
          <path d="M6 3c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V9l-6-6H6zm8 1.5L18.5 9H14V4.5z" fill="currentColor"/>
        </svg>
      </a>
      <a class="environment-card__icon environment-card__icon--hf" href="https://huggingface.co/spaces/openenv/openspiel_env" target="_blank" rel="noreferrer noopener" aria-label="OpenSpiel on Hugging Face">
        <img src="https://huggingface.co/front/assets/huggingface_logo-noborder.svg" alt="" aria-hidden="true" />
      </a>
    </div>
  </div>

  <div class="environment-card">
    <div class="environment-card__body">
      <span class="environment-card__tag">SUMO-RL</span>
      <p class="environment-card__description">
        Traffic control scenarios with SUMO simulators for agents that reason about continuous control and scheduling.
      </p>
    </div>
    <div class="environment-card__links">
      <a class="environment-card__icon" href="/OpenEnv/environments/sumo/" aria-label="SUMO-RL docs">
        <svg viewBox="0 0 24 24" aria-hidden="true" focusable="false">
          <path d="M6 3c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V9l-6-6H6zm8 1.5L18.5 9H14V4.5z" fill="currentColor"/>
        </svg>
      </a>
    </div>
  </div>

  <div class="environment-card">
    <div class="environment-card__body">
      <span class="environment-card__tag">FinRL</span>
      <p class="environment-card__description">
        Financial market simulations with portfolio APIs, perfect for RLHF strategies and algorithmic trading experiments.
      </p>
    </div>
    <div class="environment-card__links">
      <a class="environment-card__icon" href="/OpenEnv/environments/finrl/" aria-label="FinRL docs">
        <svg viewBox="0 0 24 24" aria-hidden="true" focusable="false">
          <path d="M6 3c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V9l-6-6H6zm8 1.5L18.5 9H14V4.5z" fill="currentColor"/>
        </svg>
      </a>
    </div>
  </div>

  <div class="environment-card">
    <div class="environment-card__body">
      <span class="environment-card__tag">FinQA</span>
      <p class="environment-card__description">
        Financial question-answering on SEC 10-K filings with SQL tools, fuzzy numerical matching, and binary reward for RL training.
      </p>
    </div>
    <div class="environment-card__links">
      <a class="environment-card__icon" href="/OpenEnv/environments/finqa/" aria-label="FinQA docs">
        <svg viewBox="0 0 24 24" aria-hidden="true" focusable="false">
          <path d="M6 3c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V9l-6-6H6zm8 1.5L18.5 9H14V4.5z" fill="currentColor"/>
        </svg>
      </a>
      <a class="environment-card__icon environment-card__icon--hf" href="https://huggingface.co/spaces/bhavishya2895/finqa-env" target="_blank" rel="noreferrer noopener" aria-label="FinQA on Hugging Face">
        <img src="https://huggingface.co/front/assets/huggingface_logo-noborder.svg" alt="" aria-hidden="true" />
      </a>
    </div>
  </div>

  <div class="environment-card">
    <div class="environment-card__body">
      <span class="environment-card__tag">TextArena</span>
      <p class="environment-card__description">
        Multi-task text arena for language-game competitions such as Wordle, reasoning puzzles, and program synthesis.
      </p>
    </div>
    <div class="environment-card__links">
      <a class="environment-card__icon" href="/OpenEnv/environments/textarena/" aria-label="TextArena docs">
        <svg viewBox="0 0 24 24" aria-hidden="true" focusable="false">
          <path d="M6 3c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V9l-6-6H6zm8 1.5L18.5 9H14V4.5z" fill="currentColor"/>
        </svg>
      </a>
      <a class="environment-card__icon environment-card__icon--hf" href="https://huggingface.co/spaces/burtenshaw/textarena_env" target="_blank" rel="noreferrer noopener" aria-label="TextArena on Hugging Face">
        <img src="https://huggingface.co/front/assets/huggingface_logo-noborder.svg" alt="" aria-hidden="true" />
      </a>
    </div>
  </div>

  <div class="environment-card">
    <div class="environment-card__body">
      <span class="environment-card__tag">Git</span>
      <p class="environment-card__description">
        Teaches agents to navigate repositories, inspect diffs, and land changes via Git-native operations.
      </p>
    </div>
    <div class="environment-card__links">
      <a class="environment-card__icon" href="/OpenEnv/environments/git/" aria-label="Git docs">
        <svg viewBox="0 0 24 24" aria-hidden="true" focusable="false">
          <path d="M6 3c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V9l-6-6H6zm8 1.5L18.5 9H14V4.5z" fill="currentColor"/>
        </svg>
      </a>
    </div>
  </div>

  <div class="environment-card">
    <div class="environment-card__body">
      <span class="environment-card__tag">DIPG Safety</span>
      <p class="environment-card__description">
        Safety-critical diagnostics from the DIPG benchmark, highlighting guardrails, adversarial prompts, and risk scoring.
      </p>
    </div>
    <div class="environment-card__links">
      <a class="environment-card__icon" href="/OpenEnv/environments/dipg/" aria-label="DIPG Safety docs">
        <svg viewBox="0 0 24 24" aria-hidden="true" focusable="false">
          <path d="M6 3c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V9l-6-6H6zm8 1.5L18.5 9H14V4.5z" fill="currentColor"/>
        </svg>
      </a>
      <a class="environment-card__icon environment-card__icon--hf" href="https://huggingface.co/spaces/surfiniaburger/dipg-gym" target="_blank" rel="noreferrer noopener" aria-label="DIPG Safety on Hugging Face">
        <img src="https://huggingface.co/front/assets/huggingface_logo-noborder.svg" alt="" aria-hidden="true" />
      </a>
    </div>
  </div>

  <div class="environment-card">
    <div class="environment-card__body">
      <span class="environment-card__tag">Snake</span>
      <p class="environment-card__description">
        Classic snake game environment for RL research with configurable grids, partial observability, and customizable rewards.
      </p>
    </div>
    <div class="environment-card__links">
      <a class="environment-card__icon" href="/OpenEnv/environments/snake/" aria-label="Snake docs">
        <svg viewBox="0 0 24 24" aria-hidden="true" focusable="false">
          <path d="M6 3c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V9l-6-6H6zm8 1.5L18.5 9H14V4.5z" fill="currentColor"/>
        </svg>
      </a>
      <a class="environment-card__icon environment-card__icon--hf" href="https://huggingface.co/spaces/Crashbandicoote2/snake_env" target="_blank" rel="noreferrer noopener" aria-label="Snake on Hugging Face">
        <img src="https://huggingface.co/front/assets/huggingface_logo-noborder.svg" alt="" aria-hidden="true" />
      </a>
    </div>
  </div>

  <div class="environment-card">
    <div class="environment-card__body">
      <span class="environment-card__tag">Chess</span>
      <p class="environment-card__description">
        Chess RL environment powered by the moonfish engine with configurable opponents, PSQT evaluation, and full rules support.
      </p>
    </div>
    <div class="environment-card__links">
      <a class="environment-card__icon" href="/OpenEnv/environments/chess/" aria-label="Chess docs">
        <svg viewBox="0 0 24 24" aria-hidden="true" focusable="false">
          <path d="M6 3c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V9l-6-6H6zm8 1.5L18.5 9H14V4.5z" fill="currentColor"/>
        </svg>
      </a>
      <a class="environment-card__icon environment-card__icon--hf" href="https://huggingface.co/spaces/luccabb/moonfish_chess" target="_blank" rel="noreferrer noopener" aria-label="Chess on Hugging Face">
        <img src="https://huggingface.co/front/assets/huggingface_logo-noborder.svg" alt="" aria-hidden="true" />
      </a>
    </div>
  </div>

  <div class="environment-card">
    <div class="environment-card__body">
      <span class="environment-card__tag">Maze</span>
      <p class="environment-card__description">
        A grid maze RL environment where the agent must navigate from a start cell to an exit while avoiding walls.
      </p>
    </div>
    <div class="environment-card__links">
      <a class="environment-card__icon" href="/OpenEnv/environments/maze/" aria-label="Maze docs">
        <svg viewBox="0 0 24 24" aria-hidden="true" focusable="false">
          <path d="M6 3c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V9l-6-6H6zm8 1.5L18.5 9H14V4.5z" fill="currentColor"/>
        </svg>
      </a>
      <a class="environment-card__icon environment-card__icon--hf" href="https://huggingface.co/spaces/Jiyaaaaaa/maze_env" target="_blank" rel="noreferrer noopener" aria-label="Maze on Hugging Face">
        <img src="https://huggingface.co/front/assets/huggingface_logo-noborder.svg" alt="" aria-hidden="true" />
      </a>
    </div>
  </div>

  <div class="environment-card">
    <div class="environment-card__body">
      <span class="environment-card__tag">Unity</span>
      <p class="environment-card__description">
        A wrapper for Unity environments to bring different nice graphical simulation environment from Unity that supports Ml-Agents-envs.
      </p>
    </div>
    <div class="environment-card__links">
      <a class="environment-card__icon" href="/OpenEnv/environments/Unity/" aria-label="Unity docs">
        <svg viewBox="0 0 24 24" aria-hidden="true" focusable="false">
          <path d="M6 3c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V9l-6-6H6zm8 1.5L18.5 9H14V4.5z" fill="currentColor"/>
        </svg>
      </a>
      <a class="environment-card__icon environment-card__icon--hf" href="https://huggingface.co/spaces/Crashbandicoote2/unity_env" target="_blank" rel="noreferrer noopener" aria-label="Unity on Hugging Face">
        <img src="https://huggingface.co/front/assets/huggingface_logo-noborder.svg" alt="" aria-hidden="true" />
      </a>
    </div>
  </div>

  <div class="environment-card">
    <div class="environment-card__body">
      <span class="environment-card__tag">OpenApp</span>
      <p class="environment-card__description">
        A web application simulation environment for OpenEnv that wraps the OpenApps framework and BrowserGym.
      </p>
    </div>
    <div class="environment-card__links">
      <a class="environment-card__icon" href="/OpenEnv/environments/OpenApps/" aria-label="OpenApps docs">
        <svg viewBox="0 0 24 24" aria-hidden="true" focusable="false">
          <path d="M6 3c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V9l-6-6H6zm8 1.5L18.5 9H14V4.5z" fill="currentColor"/>
        </svg>
      </a>
      <a class="environment-card__icon environment-card__icon--hf" href="https://huggingface.co/spaces/Crashbandicoote2/Openapp_env" target="_blank" rel="noreferrer noopener" aria-label="OpenApps on Hugging Face">
        <img src="https://huggingface.co/front/assets/huggingface_logo-noborder.svg" alt="" aria-hidden="true" />
      </a>
    </div>
  </div>

  <div class="environment-card">
    <div class="environment-card__body">
      <span class="environment-card__tag">Web Search</span>
      <p class="environment-card__description">
        Web search environment for RL research with configurable grids, partial observability, and customizable rewards.
      </p>
    </div>
    <div class="environment-card__links">
      <a class="environment-card__icon" href="/OpenEnv/environments/websearch/" aria-label="Web Search docs">
        <svg viewBox="0 0 24 24" aria-hidden="true" focusable="false">
          <path d="M6 3c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V9l-6-6H6zm8 1.5L18.5 9H14V4.5z" fill="currentColor"/>
        </svg>
      </a>
      <a class="environment-card__icon environment-card__icon--hf" href="https://huggingface.co/spaces/lawhy/web_search" target="_blank" rel="noreferrer noopener" aria-label="Web Search on Hugging Face">
        <img src="https://huggingface.co/front/assets/huggingface_logo-noborder.svg" alt="" aria-hidden="true" />
      </a>
    </div>
  </div>

  <div class="environment-card">
    <div class="environment-card__body">
      <span class="environment-card__tag">BrowserGym</span>
      <p class="environment-card__description">
        Browser automation environment for web agents with DOM interaction, navigation, and multi-step task completion.
      </p>
    </div>
    <div class="environment-card__links">
      <a class="environment-card__icon" href="/OpenEnv/environments/browsergym/" aria-label="BrowserGym docs">
        <svg viewBox="0 0 24 24" aria-hidden="true" focusable="false">
          <path d="M6 3c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V9l-6-6H6zm8 1.5L18.5 9H14V4.5z" fill="currentColor"/>
        </svg>
      </a>
      <a class="environment-card__icon environment-card__icon--hf" href="https://huggingface.co/spaces/burtenshaw/browsergym-v2" target="_blank" rel="noreferrer noopener" aria-label="BrowserGym on Hugging Face">
        <img src="https://huggingface.co/front/assets/huggingface_logo-noborder.svg" alt="" aria-hidden="true" />
      </a>
    </div>
  </div>

  <div class="environment-card">
    <div class="environment-card__body">
      <span class="environment-card__tag">Wildfire</span>
      <p class="environment-card__description">
        Autonomous wildfire containment simulation with grid-based fire spread, weather dynamics, and resource-constrained control strategies for RL agents.
      </p>
    </div>
    <div class="environment-card__links">
      <a class="environment-card__icon" href="/OpenEnv/environments/wildfire/" aria-label="Wildfire docs">
        <svg viewBox="0 0 24 24" aria-hidden="true" focusable="false">
          <path d="M6 3c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V9l-6-6H6zm8 1.5L18.5 9H14V4.5z" fill="currentColor"/>
        </svg>
      </a>
      <a class="environment-card__icon environment-card__icon--hf" href="https://huggingface.co/spaces/shankerram3/wildfire_env" target="_blank" rel="noreferrer noopener" aria-label="Wildfire on Hugging Face">
        <img src="https://huggingface.co/front/assets/huggingface_logo-noborder.svg" alt="" aria-hidden="true" />
      </a>
    </div>
  </div>

  <div class="environment-card">
    <div class="environment-card__body">
      <span class="environment-card__tag">REPL</span>
      <p class="environment-card__description">
        Python REPL environment for training language models on code execution tasks. Based on the Recursive Language Models (RLM) paradigm
      </p>
    </div>
    <div class="environment-card__links">
      <a class="environment-card__icon" href="/OpenEnv/environments/repl/" aria-label="REPL docs">
        <svg viewBox="0 0 24 24" aria-hidden="true" focusable="false">
          <path d="M6 3c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V9l-6-6H6zm8 1.5L18.5 9H14V4.5z" fill="currentColor"/>
        </svg>
      </a>
      <a class="environment-card__icon environment-card__icon--hf" href="https://huggingface.co/spaces/openenv/repl" target="_blank" rel="noreferrer noopener" aria-label="REPL on Hugging Face">
        <img src="https://huggingface.co/front/assets/huggingface_logo-noborder.svg" alt="" aria-hidden="true" />
      </a>
    </div>
  </div>
  <div class="environment-card">
    <div class="environment-card__body">
      <span class="environment-card__tag">Terminal-Bench 2</span>
      <p class="environment-card__description">
        OpenEnv wrapper for Terminal-Bench 2 tasks
      </p>
    </div>
    <div class="environment-card__links">
      <a class="environment-card__icon" href="/OpenEnv/environments/tbench2/" aria-label="TB2 docs">
        <svg viewBox="0 0 24 24" aria-hidden="true" focusable="false">
          <path d="M6 3c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V9l-6-6H6zm8 1.5L18.5 9H14V4.5z" fill="currentColor"/>
        </svg>
      </a>
      <a class="environment-card__icon environment-card__icon--hf" href="https://huggingface.co/spaces/openenv/tbench2" target="_blank" rel="noreferrer noopener" aria-label="TB2 on Hugging Face">
        <img src="https://huggingface.co/front/assets/huggingface_logo-noborder.svg" alt="" aria-hidden="true" />
      </a>
    </div>
  </div>

  <div class="environment-card">
    <div class="environment-card__body">
      <span class="environment-card__tag">Julia</span>
      <p class="environment-card__description">
        Julia code execution environment for RL training with test result tracking, reward calculation, and process pooling for performance.
      </p>
    </div>
    <div class="environment-card__links">
      <a class="environment-card__icon" href="/OpenEnv/environments/julia/" aria-label="Julia docs">
        <svg viewBox="0 0 24 24" aria-hidden="true" focusable="false">
          <path d="M6 3c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V9l-6-6H6zm8 1.5L18.5 9H14V4.5z" fill="currentColor"/>
        </svg>
      </a>
      <a class="environment-card__icon environment-card__icon--hf" href="https://huggingface.co/spaces/openenv/julia_env" target="_blank" rel="noreferrer noopener" aria-label="Julia on Hugging Face">
        <img src="https://huggingface.co/front/assets/huggingface_logo-noborder.svg" alt="" aria-hidden="true" />
      </a>
    </div>
  </div>

  <div class="environment-card">
    <div class="environment-card__body">
      <span class="environment-card__tag">kernrl</span>
      <p class="environment-card__description">
        GPU kernel optimization environment for training LLMs to write fast CUDA/Triton kernels with real hardware feedback.
      </p>
    </div>
    <div class="environment-card__links">
      <a class="environment-card__icon" href="/OpenEnv/environments/kernrl/" aria-label="kernrl docs">
        <svg viewBox="0 0 24 24" aria-hidden="true" focusable="false">
          <path d="M6 3c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V9l-6-6H6zm8 1.5L18.5 9H14V4.5z" fill="currentColor"/>
        </svg>
      </a>
      <a class="environment-card__icon environment-card__icon--hf" href="https://huggingface.co/spaces/Infatoshi/kernrl" target="_blank" rel="noreferrer noopener" aria-label="kernrl on Hugging Face">
        <img src="https://huggingface.co/front/assets/huggingface_logo-noborder.svg" alt="" aria-hidden="true" />
      </a>
    </div>
  </div>
  <div class="environment-card">
    <div class="environment-card__body">
      <span class="environment-card__tag">Grid World</span>
      <p class="environment-card__description">
        A simple 5x5 grid world environment for testing and learning the OpenEnv framework.
      </p>
    </div>
    <div class="environment-card__links">
      <a class="environment-card__icon" href="https://github.com/yuvrajpant56/OpenEnv/blob/feat/fresh-grid-world/envs/grid_world_env/README.md" target="_blank" rel="noreferrer noopener" aria-label="Grid World docs">
        <svg viewBox="0 0 24 24" aria-hidden="true" focusable="false">
          <path d="M6 3c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V9l-6-6H6zm8 1.5L18.5 9H14V4.5z" fill="currentColor"/>
        </svg>
      </a>
      <a class="environment-card__icon environment-card__icon--hf" href="https://huggingface.co/spaces/yuvrajpant56/grid_world_env" target="_blank" rel="noreferrer noopener" aria-label="Grid World on Hugging Face">
        <img src="https://huggingface.co/front/assets/huggingface_logo_noborder.svg" alt="" aria-hidden="true" />
      </a>
    </div>
  </div>
  <div class="environment-card">
    <div class="environment-card__body">
      <span class="environment-card__tag">RLVE Gym</span>
      <p class="environment-card__description">
        A suite of 400 environments that procedurally generate reasoning problems for LM training with configurable difficulty.
      </p>
    </div>
    <div class="environment-card__links">
      <a class="environment-card__icon" href="https://huggingface.co/spaces/ZhiyuanZeng/RLVE_Gym/blob/main/README.md" target="_blank" rel="noreferrer noopener" aria-label="RLVE Gym docs">
        <svg viewBox="0 0 24 24" aria-hidden="true" focusable="false">
          <path d="M6 3c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V9l-6-6H6zm8 1.5L18.5 9H14V4.5z" fill="currentColor"/>
        </svg>
      </a>
      <a class="environment-card__icon environment-card__icon--hf" href="https://huggingface.co/spaces/ZhiyuanZeng/RLVE_Gym" target="_blank" rel="noreferrer noopener" aria-label="RLVE Gym on Hugging Face">
        <img src="https://huggingface.co/front/assets/huggingface_logo-noborder.svg" alt="" aria-hidden="true" />
      </a>
    </div>
  </div>

  <div class="environment-card">
    <div class="environment-card__body">
      <span class="environment-card__tag">Reasoning Gym</span>
      <p class="environment-card__description">
        Procedural dataset generators providing 100+ reasoning tasks across algebra, arithmetic, geometry, graph theory, logic, and games with adjustable complexity and algorithmic verification.
      </p>
    </div>
    <div class="environment-card__links">
      <a class="environment-card__icon" href="/OpenEnv/environments/reasoning_gym/" aria-label="Reasoning Gym docs">
        <svg viewBox="0 0 24 24" aria-hidden="true" focusable="false">
          <path d="M6 3c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V9l-6-6H6zm8 1.5L18.5 9H14V4.5z" fill="currentColor"/>
        </svg>
      </a>
      <a class="environment-card__icon environment-card__icon--hf" href="https://huggingface.co/spaces/zafstojano/reasoning_gym" target="_blank" rel="noreferrer noopener" aria-label="Reasoning Gym on Hugging Face">
        <img src="https://huggingface.co/front/assets/huggingface_logo-noborder.svg" alt="" aria-hidden="true" />
      </a>
    </div>
  </div>

  <div class="environment-card">
    <div class="environment-card__body">
      <span class="environment-card__tag">Calendar Gym</span>
      <p class="environment-card__description">
        This environment exposes a Calendar Gym tools through the OpenEnv reset/step/state interface. The server runs a FastAPI app that serves the OpenEnv endpoints.
      </p>
    </div>
    <div class="environment-card__links">
      <a class="environment-card__icon" href="https://huggingface.co/spaces/TuringEnterprises/calendar-gym/blob/main/README.md" target="_blank" rel="noreferrer noopener" aria-label="Calendar Gym docs">
        <svg viewBox="0 0 24 24" aria-hidden="true" focusable="false">
          <path d="M6 3c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V9l-6-6H6zm8 1.5L18.5 9H14V4.5z" fill="currentColor"/>
        </svg>
      </a>
      <a class="environment-card__icon environment-card__icon--hf" href="https://huggingface.co/spaces/TuringEnterprises/calendar-gym" target="_blank" rel="noreferrer noopener" aria-label="Calendar Gym on Hugging Face">
        <img src="https://huggingface.co/front/assets/huggingface_logo-noborder.svg" alt="" aria-hidden="true" />
      </a>
    </div>
  </div>

  <div class="environment-card">
    <div class="environment-card__body">
      <span class="environment-card__tag">CARLA</span>
      <p class="environment-card__description">
        Embodied evaluation in a full 3D driving simulator with irreversible consequences. 9 trolley micro-benchmarks, maze navigation, and free-roam traffic scenarios.
      </p>
    </div>
    <div class="environment-card__links">
      <a class="environment-card__icon" href="/OpenEnv/environments/carla/" aria-label="CARLA docs">
        <svg viewBox="0 0 24 24" aria-hidden="true" focusable="false">
          <path d="M6 3c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V9l-6-6H6zm8 1.5L18.5 9H14V4.5z" fill="currentColor"/>
        </svg>
      </a>
      <a class="environment-card__icon environment-card__icon--hf" href="https://huggingface.co/spaces/sergiopaniego/carla-env" target="_blank" rel="noreferrer noopener" aria-label="CARLA on Hugging Face">
        <img src="https://huggingface.co/front/assets/huggingface_logo-noborder.svg" alt="" aria-hidden="true" />
      </a>
    </div>
  </div>

  <div class="environment-card">
    <div class="environment-card__body">
      <span class="environment-card__tag">dm_control</span>
      <p class="environment-card__description">
        MuJoCo-based continuous control tasks from DeepMind's dm_control suite — cartpole, hopper, quadruped, walker, and more.
      </p>
    </div>
    <div class="environment-card__links">
      <a class="environment-card__icon" href="/OpenEnv/environments/dm-control/" aria-label="dm_control docs">
        <svg viewBox="0 0 24 24" aria-hidden="true" focusable="false">
          <path d="M6 3c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V9l-6-6H6zm8 1.5L18.5 9H14V4.5z" fill="currentColor"/>
        </svg>
      </a>
      <a class="environment-card__icon environment-card__icon--hf" href="https://huggingface.co/spaces/mreso/dm_control_env" target="_blank" rel="noreferrer noopener" aria-label="dm_control on Hugging Face">
        <img src="https://huggingface.co/front/assets/huggingface_logo-noborder.svg" alt="" aria-hidden="true" />
      </a>
    </div>
  </div>

</div>

> Want to publish your own environment? Head over to the [Build Your Own Environment](environment-builder.md) guide for a step-by-step walkthrough.