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The Best in Slot Ordinals API has been retired.We no longer operate the hosted API at api.bestinslot.xyz. Instead, we recommend running OPI (Open Protocol Indexer) yourself — it is open source, self-hosted, and gives you full control over your own data.The API reference on this site is kept online for historical reference only.

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Migrating to OPI

OPI is our open-source indexing client for meta-protocols on Bitcoin. It is built on a modified version of ord, is modular, and has reorg protection built into every module. OPI currently indexes:
  • BRC-20 — follows the official protocol rules and tracks all historical balance changes and events
  • Bitmap — indexes bitmap-number and inscription-id pairs per the official specification
  • SNS (Sats Names) — tracks name, domain and namespace registrations
Each module ships with its own REST API, so you can query block activity and events, wallet balances at a given height, block and cumulative hashes for verification, and protocol-specific lookups from your own infrastructure.

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What you’ll need

  • PostgreSQL
  • Rust toolchain (to build ord and the BRC-20 indexer)
  • Node.js (for the API services)
  • Python 3 with virtual environment support
Setup instructions, including a step-by-step Ubuntu guide, are in the OPI repository.

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Want to learn about our BRC-20 indexer?

The BRC-20 Indexer Rules still apply to the BRC-20 module in OPI: BRC-20 Indexer Rules

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Looking for the old API reference?

The retired endpoint documentation remains available for reference: API Reference