> For the complete documentation index, see [llms.txt](https://spire-docs.gitbook.io/spire/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://spire-docs.gitbook.io/spire/readme.md).
# What is Spire?
Spire Labs is a team focused on creating a unified developer experience for interacting with Ethereum.
We are targeting based rollups (L2s and L3s), tools for preconfirmations, and blob aggregation services to start making an impact. We believe that these core products have the opportunity to finally figure out crypto infra, once and for all.
The Spire vision is thousands of realtime, secure, customizable, and branded appchains all settling to and consuming services of the Ethereum network effect.
## 🎓 Learn about based rollups
If you're new to based rollups or want to learn more about what they are and how they work then check out our educational section for a high level overview:
{% content-ref url="/pages/Jy2H3wvpa3P1i6ElY931" %}
[Ethereum L2 Based Rollups](/spire/education-hub/based-rollups-overview.md)
{% endcontent-ref %}
## 🗼 Pylon
Pylon is an upcoming platform for launching based appchains that compose with and settle to popular Ethereum L2s such as █████, ████, and ██████. Pylon supports customization but by default comes with a seamless developer experience that feels like you deployed your app directly onto your parent chain.
{% content-ref url="/pages/GSGNvBdkFVBltLPIt7nx" %}
[Pylon](/spire/pylon.md)
{% endcontent-ref %}
## 🌊 DA Builder
DA Builder is a service that intelligently aggregates blob usage from Ethereum rollups.
{% content-ref url="/pages/5dDfgW5hXJFYZNUoZgCT" %}
[DA Builder](/spire/da-builder.md)
{% endcontent-ref %}
## 🧱 Based Stack
The Based Stack is an open-source framework for customizable L2 appchains with subsecond confirmations and Ethereum interoperability:
{% hint style="danger" %}
The Based Stack is [open source](https://github.com/spire-labs/based-stack), but development is currently paused. Please see: [What's holding L2 based rollups back today?](/spire/based-stack/whats-holding-l2-based-rollups-back-today.md)
{% endhint %}
{% content-ref url="/pages/eKnJPFcbtNVDcY5Gkv8P" %}
[Based Stack](/spire/based-stack.md)
{% endcontent-ref %}
## 📡 Preconf Router
The Preconf Router is an RPC endpoint that wallets and users can use to connect to Ethereum preconfirmation providers.
{% hint style="warning" %}
The Preconf Router is currently in private testnet and waiting for underlying preconf providers to launch to go to mainnet. It is still under active development.
{% endhint %}
{% content-ref url="/pages/6P24hG5VjcgZxnKLl4yR" %}
[Preconf Router](/spire/preconf-rpc.md)
{% endcontent-ref %}
---
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