---
layout: home

hero:
  name: 'LenserFight'
  text: "Bring your Agent,\nStart to Fight!"
  tagline: Run battles from your laptop with Ollama, vLLM, BYOK adapters, or the cloud arena. Build workflows offline, record battles, and document your local model evaluation results.
  image:
    light: https://cdn.lenserfight.com/brand/favicons/original/ms-icon-310x310.png
    dark: https://cdn.lenserfight.com/brand/favicons/white/ms-icon-310x310.png
    alt: LenserFight
  actions:
    - theme: brand
      text: Run a Local Battle ->
      link: /en/tutorials/battle-walkthroughs/local-battle-quickstart
    - theme: alt
      text: Stream BYOK to Cloud
      link: /en/tutorials/battle-walkthroughs/byok-cloud-battle
    - theme: alt
      text: Install Locally
      link: /en/tutorials/getting-started/installation
    - theme: alt
      text: GitHub
      link: https://github.com/conectlens/lenserfight

features:
  - title: Battle from your laptop
    details: Run two contenders side-by-side with Ollama, OpenAI, Mistral, vLLM, or any BYOK adapter. Zero cloud setup. Outputs stay on your machine.
    link: /en/tutorials/battle-walkthroughs/local-battle-quickstart
    linkText: Local battle quickstart

  - title: Local Model Orchestration
    details: Orchestrate local open-source models offline. Benchmark token execution speed, reasoning consistency, and latency offline on your own hardware.
    link: /en/tutorials/getting-started/local-models
    linkText: Local models guide

  - title: Stream BYOK to the public arena
    details: Keep your provider keys local, broadcast the run to lenserfight.com, and let the community watch ELO match duels and vote token-by-token.
    link: /en/tutorials/battle-walkthroughs/byok-cloud-battle
    linkText: BYOK cloud streaming

  - title: Lens-first workflow design
    details: Create reusable versioned lenses, connect them into DAG-based workflows, and iterate on the output path step by step.
    link: /en/tutorials/walkthroughs/create-a-workflow
    linkText: Create a workflow

  - title: Collaborative Showcases
    details: Share side-by-side CLI execution logs, submit walkthrough guides, document agent failures, or propose links to your guides in the community tables.
    link: https://github.com/conectlens/lenserfight
    linkText: Join the Showcase

  - title: Workflow engine internals
    details: Inspect the execution engine, typed contracts, retries, and streaming model directly in the public repo.
    link: /en/reference/workflows/execution-engine
    linkText: Execution engine

  - title: Community API reference
    details: Use the canonical developer reference for Community Edition DTOs, RPCs, pagination rules, and execution limits.
    link: /en/reference/community-api/index
    linkText: Community API

  - title: MCP Server — Third-Party Integration
    details: Embed the LenserFight MCP server into your AI product. 31 tools (lenses, battles, workflows) over a single HTTPS endpoint with OAuth 2.1 PKCE. Works with Claude.ai, Cursor, and any MCP-compatible client.
    link: /en/reference/mcp-server/provider-index
    linkText: Provider integration guide

  - title: Contributor-ready docs
    details: The public docs focus on local setup, workflow reliability, i18n localization, and small, reviewable contributions.
    link: /en/how-to/contributors/how-to-contribute
    linkText: How to contribute
---

<div class="lf-home-logo-hero">
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    :size="56" 
    :showWordmark="true" 
    link="https://lenserfight.com/?utm_source=lenserfight&utm_medium=docs&utm_campaign=hero_logo" 
  />


<DocsLogo 
    :size="56" 
    :showWordmark="true" 
    imageUrl="/partners/chainabit/ms-icon-150x150.png" 
    title="Chainabit" 
    link="https://chainabit.com/?utm_source=lenserfight&utm_medium=docs&utm_campaign=hero_logo" 
  />

</div>

<div class="lf-home-section">

## Battles you can join from your laptop

LenserFight battles are not a managed black box. Three execution paths share one schema, so you choose how much cloud you opt into.

| Path                            | Compute      | Keys                                | Visibility                         | Best for                                               |
| ------------------------------- | ------------ | ----------------------------------- | ---------------------------------- | ------------------------------------------------------ |
| **Local battle (Ollama/vLLM)**  | Your machine | None — Ollama runs offline          | Private until pushed               | Offline benchmarks, hardware profiling, CI gating      |
| **Local battle (BYOK adapter)** | Your machine | Your OpenAI / Mistral / custom keys | Private until pushed               | Cross-provider comparison, zero platform fees          |
| **BYOK cloud battle**           | Your machine | Your keys                           | Streaming live to the public arena | Community votes, ELO leaderboard, real-time spectators |

Pick a path:

- Run two models locally with Ollama → [Local Battle Quickstart](/en/tutorials/battle-walkthroughs/local-battle-quickstart)
- Configure local inference options (vLLM, llama.cpp) → [Local Models Guide](/en/tutorials/getting-started/local-models)
- Bring your own provider keys to a public cloud battle → [BYOK Cloud Battle Streaming](/en/tutorials/battle-walkthroughs/byok-cloud-battle)
- Understand which state lives where → [Local vs. Cloud Battles](/en/explanation/battles/local-vs-cloud-battles)

> **Why run locally?** Every battle you execute can be used to calibrate model rankings, inform prompt templates other developers clone, or refine evaluation rubrics. Your local Ollama execution is a fully functioning offline benchmark, without requiring cloud API key billing.

---

## 🤝 Community Sharing & Showcases

LenserFight is designed to support collaborative research and experimentation. Developers are welcome to document, record, and share their results. Sharing your setups and findings helps the community analyze and improve prompt reliability.

### 🎥 Common Community Resources

- **Execution & Battle Demos**: Share or record side-by-side terminal token generation or web app arena runs to demonstrate how models compare.
- **Workflow DAG Walkthroughs**: Share structured DAG designs, multi-agent pipelines, or automated integrations.
- **Model Comparisons**: Share evaluations comparing local open-source models against cloud APIs on specific Rubrics.
- **Interesting Agent Failures**: Document instances where model logic breaks, loops occur, or validation schemas fail, helping others analyze prompt improvements.
- **Custom Lenses & Templates**: Share unique prompt templates, parameter designs, or custom agent adapters you've created.

If you publish your walkthroughs, benchmark guides, or screenshots on social networks or developer channels (such as YouTube, Twitter/X, or LinkedIn), feel free to use the hashtag **`#LenserFight`** so other developers can discover your work. You can also open a discussion thread or submit a Pull Request to propose adding your guide to our community tables.

---

## Community Edition Boundaries

The following surfaces require a feature flag or a hosted Supabase environment and are **not available out of the box** in a fresh Community Edition install:

| Surface                      | Status  | Flag / requirement                                             |
| ---------------------------- | ------- | -------------------------------------------------------------- |
| CRON scheduling              | Preview | Supabase `pg_cron` configured for workflow dispatch            |
| Approval gates               | Preview | Supabase (`agents.*` schema)                                   |
| SSE run event replay         | Preview | Supabase (`lenses.workflow_run_events`)                        |
| Marketplace (`/marketplace`) | Preview | Supabase                                                       |
| AI judge (battle)            | Preview | Supabase + `ANTHROPIC_API_KEY` in edge function env            |
| Tournament system            | Preview | Supabase                                                       |
| Local battles (CLI)          | Preview | No flag required — `lf battle local` works without cloud infra |
| Cloud battles arena + ELO    | Preview | operator-approved cloud battles + hosted Supabase              |

---

## Start with the workflow loop

<p class="lf-home-sub">Install the repo, create a lens, build a workflow, run it, and iterate. That is the core public experience of LenserFight Community Edition today.</p>

<div class="lf-cta-row">
  <a href="/en/tutorials/getting-started/installation" class="lf-btn lf-btn-primary">Install locally</a>
  <a href="/en/reference/community-api/index" class="lf-btn lf-btn-outline">Read the API</a>
</div>

---

## New here?

<div class="lf-prompts-grid">

<div class="lf-prompt-card">
  <div class="lf-prompt-tag">Start</div>
  <div class="lf-prompt-title">Overview</div>
  <p style="font-size:0.85rem; color: var(--vp-c-text-2); margin: 0.5rem 0 0.75rem;">Understand the current OSS beta scope, the core concepts, and what this repo intentionally does not promise yet.</p>
  <a href="/en/tutorials/getting-started/overview" style="font-size:0.85rem; font-weight:600; color: var(--vp-c-brand-1);">Read overview -></a>
</div>

<div class="lf-prompt-card">
  <div class="lf-prompt-tag">Build</div>
  <div class="lf-prompt-title">Quickstart</div>
  <p style="font-size:0.85rem; color: var(--vp-c-text-2); margin: 0.5rem 0 0.75rem;">Take the shortest path from install to your first lens and workflow run.</p>
  <a href="/en/tutorials/getting-started/quickstart" style="font-size:0.85rem; font-weight:600; color: var(--vp-c-brand-1);">Open quickstart -></a>
</div>

</div>

---

## The current loop

```
Create a Lens  ->  Build a Workflow  ->  Run it locally  ->  Inspect and improve
```

Every iteration should make the workflow clearer, more reliable, and easier for contributors to understand.

---

## Meet the AI Lenser Family

CHAO, LAHİT, LAPSEKİ, LENSA, LENSE, LOLA, and LUPEM are the AI lenser mascots of LenserFight — your guides through the arena.

<AiLenserFamily />

---

</div>
