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Documentation Index

Fetch the complete documentation index at: https://docs.spire.dev/llms.txt

Use this file to discover all available pages before exploring further.

The Appchain Advantage

Traditional blockchain deployment forces you to choose between scalability and composability. With appchains, you get both.

Sovereignty Meets Settlement

A based appchain combines the advantages of running an appchain (such as customizability, scalability, and sovereignty) with the benefits of deploying a smart contract on its base layer (such as composability and simplicity). Key Benefits:
  • Scalability - Dynamically adjust gas limits to support high throughput and user demand
  • Stability - Avoid “noisy neighbor” issues with tx fee isolation and dedicated execution
  • Accessibility - Seamlessly tap into parent chain’s existing liquidity and users
  • Profitability - Capture more value with customizable fee structures and token models
  • Sovereignty - Full control over infrastructure, fees, and brand identity
  • Simplicity - Minimal infra to setup and manage—e.g. no duplicative oracle deployments

Comparison: Appchains vs Alternatives

FeatureTraditional L2sBridge SolutionsAppchains
ComposabilityNativeAsync (risky)Synchronous
ScalabilityShared resourcesSingle chain limitsDedicated
CustomizationLimitedNoneFull control
Setup TimeMinutesHoursMinutes
Trust ModelSequencerBridge operatorsFraud proofs

Migration Considerations

For New Applications

  • Start with Appchains - Build with composability from day one
  • Future-proof - Your app grows with the ecosystem
  • Lower complexity - No bridge integrations or async handling

For Existing Applications

  • Gradual migration - Start with read operations, expand over time
  • Maintain UX - Users don’t need to learn new interfaces
  • Preserve liquidity - Tap into existing settlement chain ecosystems

The Based Appchain Promise

We’re building toward a future where every appchain can compose with every other appchain under the same settlement layer. This creates:
  • Unified liquidity across all applications
  • Atomic operations spanning multiple chains
  • Simplified developer experience - write once, compose everywhere

Learn More