July brought a new round of updates across CoinAPI and FinFeedAPI, with a focus on expanding available datasets, improving API performance, and making existing market data infrastructure more reliable.
CoinAPI added new derived order book datasets, expanded Hyperliquid L4 and DeFi data availability, introduced a new Metrics V2 export pipeline, and improved Market Data API functionality.
FinFeedAPI updates focused on faster access to Stock API and Prediction Markets API data, alongside fixes for market lookups, Polymarket WebSocket subscriptions, and Euronext reference data.
Here are the main updates from July.
New Order Book Datasets in CoinAPI Flat Files
One of the biggest additions this month is two new derived order book datasets in the CoinAPI Flat Files API:
T-LIMITBOOK_SNAPSHOT_50T-LIMITBOOK_DEPTH_BANDS
T-LIMITBOOK_SNAPSHOT_50 provides 50-level order book snapshots at one-minute intervals, covering the top 50 bid and ask levels. The dataset is derived from the full limit order book and is available as per-symbol CSV files and per-exchange Parquet files.
T-LIMITBOOK_DEPTH_BANDS provides liquidity summaries at one-second intervals. It measures cumulative resting order size around the midpoint across different basis-point bands, giving teams another way to study how liquidity is distributed around the market price.
Both datasets are available for exchanges where full limit order book data is supported and are delivered through the coinapi bucket.
Documentation was also expanded with schemas, field descriptions, S3 path conventions, and updated Flat Files dataset references.
More Hyperliquid L4 and DeFi Data
Following the launch of native Hyperliquid L4 data, CoinAPI expanded Flat Files availability with priced SKUs for additional Hyperliquid datasets:
HLORACLEPRICESHLTWAPSTATUSESHLMISCEVENTSHLSYSTEMEVENTS
These datasets extend access beyond traditional order book and trade data into oracle prices, TWAP activity, exchange events, and system-level events.
Reliability was also improved for large HYPERLIQUIDL4 funding misc events. Oversized events are now split, while file-tail stream health reporting was improved to make delivery of large Hyperliquid payloads more reliable.
CoinAPI also added priced Flat Files SKUs for DeFi protocol datasets, including swaps, deposits, and withdrawals from Uniswap, SushiSwap, Curve, and DODO.
Pricing for equivalent DEX swap, deposit, and withdrawal dataset categories was unified to make transfer rates more consistent across these datasets.
Metrics V2 and DeFiLlama Data
CoinAPI introduced a new Metrics V2 hourly export pipeline for the Flat Files API.
The pipeline creates one consolidated metrics file per exchange per hour, making hourly metric datasets easier to consume in bulk.
It also includes DeFiLlama protocol metrics, consolidated under the E-DEFILLAMA exchange identifier.
Priced SKUs were added for METRICS-OHLCV and DeFi protocol datasets, expanding the types of market and protocol data that can be accessed through Flat Files.
A related fix also corrected cases where historical Metrics OHLCV rows already stored under CoinAPI metric names could be skipped during export.
Market Data API Improvements
Several updates in July focused on improving CoinAPI's Market Data API.
The Quotes endpoints /v1/quotes/latest and /v1/quotes/current now support the optional filter_exchange_id parameter. This allows users to limit quote snapshots to selected exchanges instead of retrieving results across all available venues.
OHLCV aggregation was also updated to support index instruments without trade size. As a result, INDEX symbols can now generate candles from price prints even when size information is unavailable.
CoinAPI also improved symbol mapping across multiple exchanges, including better index identifiers, contract classification, and base/quote parsing for selected venues.
For BitMEX specifically, IndexId is now populated correctly for index symbols.
Improved LBANK Historical and Real-Time Data Reliability
CoinAPI made two targeted improvements to LBANK market data during July.
The REST backfill timeout was increased to reduce the risk of missing historical trades when retrieving data from the venue.
Active LBANK symbols were also capped and WebSocket connections rebalanced to address trade loss during real-time collection.
Together, these changes improve both historical backfill and ongoing trade-data reliability for the exchange.
Faster Prediction Markets API Access
Prediction Markets API performance was another focus across both CoinAPI and FinFeedAPI.
The /v1/markets/{exchange_id}/history endpoint now provides faster pagination for venues with large market histories stored in S3.
Single-market lookups were also fixed for KALSHI, MYRIAD, and HYPERLIQUIDOUTCOME. Previously, key-casing mismatches could cause valid market requests to return a 404 response.
A separate fix addressed a Polymarket issue where a broken WebSocket during subscription could cause a crash.
These updates make it more reliable to retrieve both individual prediction markets and larger historical market datasets.
Faster Stock API Symbol Access
FinFeedAPI's Stock API received improvements for exchanges with large symbol histories.
Pagination for /v1/symbols/{exchange_id} is now faster when accessing large S3-backed symbol datasets, reducing the time required to work through extensive exchange reference data.
Euronext reference-data updates were also restored after the previous instrument list API stopped returning rows.
Instrument extraction now uses Euronext's public CSV export endpoints, restoring the reference-data update process.
More Prediction Market Data in Flat Files
CoinAPI also expanded its Flat Files pricing exchange list to include prediction-market exchanges.
This brings prediction-market venues into the Flat Files pricing structure alongside other supported market data sources and complements the Prediction Markets API improvements released during July.
For teams working with prediction market data, the updates improve access to larger historical market datasets while fixing several issues affecting individual market retrieval and WebSocket subscriptions.
👉 Explore the latest CoinAPI and FinFeedAPI updates in the API BRICKS changelogs: CoinAPI and FinFeedAPI.
