At 00:00 UTC on March 3, we’ll quietly open the doors to our beta program. For the next six months, participants in the beta program will be among the first to experiment and have a pass to directly shape Spark. And while we’re keeping some exciting details under wraps, early participation might just unlock a few unexpected advantages post-beta.

Spark’s beta is our inaugural public mainnet moment — it’s the first time we expose users to SDKs to build and experiment with Spark. We encourage everyone to try sending payments during this phase.

Things are still early, so you might notice some rough edges and limitations. Spark is open source and we’re actively working on it, so please reach out if you have any feedback or questions. No contributions are too small — every contribution is valued equally.

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Current SDK Availability

We’re rapidly expanding our SDKs to meet your needs — if you need a specific language, just say so and we’ll make it happen.

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Spark Wallet SDK:

  • Supported now: (Typescript)

  • Coming soon: , , + more based on demand

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Spark Issue SDK:

  • Supported now: (Typescript)
  • Coming soon: + more based on demand

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Limited Test Environment

Our beta environment includes limited API calls via Lightspark’s SSP. Key points include:

  • Traffic: If you expect high traffic, please discuss directly with us.
  • Testing Modes: Both Regtest and Mainnet environments are available.
  • Rate Limits: SSP calls for LN and L1 services are rate-limited.
  • L1 Exit: You can always exit to L1 without rate limits or intermediaries.
  • SSP Participation: Interested in running your own SSP? Please review our upcoming SSP Spec or contact us.
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