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Base URLs

NetworkBase URL
Mainnethttps://api.bestinslot.xyz
Testnet4https://testnet.api.bestinslot.xyz
Signethttps://signet_api.bestinslot.xyz
To target testnet4 or signet, swap the base URL in your requests. Your API key works across all three networks.

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Authentication

Include your API key in every request using the x-api-key header. 
curl 'https://api.bestinslot.xyz/v3/brc20/ticker_info?ticker=ordi' \
  --header 'x-api-key: YOUR_API_KEY'
All plans require an API key, including the free and trial tiers. To obtain a key, submit a request via the Best in Slot API request form.

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Response Format

Every response wraps its payload in a consistent envelope: 
{
  "data": ...,
  "block_height": 805712
}
The block_height field reflects the latest indexed block at the time of the response — not necessarily the block relevant to your query.

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Pagination

Endpoints that return lists support offset and count pagination parameters.
RuleDetail
Multiples of 20Both offset and count must be multiples of 20
Maximum offset5,000 for most endpoints (some endpoints differ — check individual parameter tables)
Maximum count100 for most endpoints (some endpoints allow up to 2,000 — check individual parameter tables)

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Plan Tiers

Endpoints are gated by API key tier. The four tiers are:
  • Basic — entry-level access to core read endpoints
  • Pro — adds pricing data, activity feeds, and wallet listings
  • Enterprise — adds block-level data streams
  • Dedicated — full access including all mempool and global activity endpoints
Each endpoint in this reference notes which plans include it. Expired API keys automatically downgrade to the Free tier.
Rate limit categories and current pricing are listed at bestinslot.xyz/api. Free and trial keys use daily limits; all paid plans use monthly limits.