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CoinAPI (BYOK) — connector documentation

  • MCP endpoint: https://byok-coinapi.connectorbay.com/mcp
  • REST API: POST https://byok-coinapi.connectorbay.com/v1/tools/{tool_name}, described by the OpenAPI 3.1 spec at https://byok-coinapi.connectorbay.com/openapi.json
  • Transport: Streamable HTTP, stateless, MCP specification 2025-06-18 or later
  • Authentication: your own CoinAPI CoinAPI key, sent in the X-Upstream-Key header of every request (never stored, logged or cached)
  • Health: https://byok-coinapi.connectorbay.com/health · Tool schemas: https://byok-coinapi.connectorbay.com/tools.json
  • Publisher: Unify Dynamics LLC · connectorbay.com/byok-coinapi · agent@connectorbay.com

What CoinAPI (BYOK) is for

CoinAPI (BYOK) lets an AI assistant read your own CoinAPI data through the CoinAPI API with a key you supply (CoinAPI key). Read-only: 12 tools (get_exchange_rate, list_rates_for_asset, get_exchange_rate_history, list_assets, get_asset, list_exchanges, list_active_symbols, list_ohlcv_periods, get_latest_ohlcv, get_ohlcv_history, get_current_quote, list_latest_trades). The BYOK key travels with each request, is used for that one call only and is never stored, logged or cached; it is only ever sent to rest.coinapi.io. Unofficial connector by Unify Dynamics LLC: not affiliated with, endorsed by or sponsored by CoinAPI. CoinAPI and its logos are trademarks of their owners and are used only to say which service the connector works with.

Ask your assistant things like:

  • "What is the current BTC to USD rate?"
  • "Show ETH rates against USD, EUR and GBP"
  • "Show daily BTC to USD rates for the first half of October"
  • "List the assets CoinAPI covers with their USD price"
  • "Give me details for the SOL asset"
  • "Which exchanges does CoinAPI cover and which are biggest by volume?"

What it does

  • get_exchange_rate: Get the current exchange rate between two assets, crypto or fiat, optionally as of a past time.
  • list_rates_for_asset: List current rates of one base asset against many quote assets, optionally limited to some quote assets.
  • get_exchange_rate_history: Get a time series of rate candles (open, high, low, close) between two assets for a candle period.
  • list_assets: List supported assets (coins, tokens and fiat currencies) with USD price and volume, optionally filtered by code or type.
  • get_asset: Get one asset by its code with USD price, 24 hour volume, supply and the period it has data for.
  • list_exchanges: List supported exchanges with website, data coverage dates, symbol counts and USD trading volume.
  • list_active_symbols: List the active markets of one exchange with their symbol id, type and base and quote assets.
  • list_ohlcv_periods: List the candle periods supported by the OHLCV endpoints with their ids and lengths.
  • get_latest_ohlcv: Get the most recent candles (open, high, low, close, volume) of one market for a period.
  • get_ohlcv_history: Get historical candles of one market between two times for a period.
  • get_current_quote: Get the current best bid and ask price and size of one market, with the last trade.
  • list_latest_trades: List the most recent trades of one market with time, price, size and taker side.

BYOK key

You bring your own CoinAPI CoinAPI key (https://www.coinapi.io/market-data-api/pricing). Your assistant sends it in the X-Upstream-Key header with each request. ConnectorBay uses it for that one call only: it is never stored, logged or cached, never shown in an answer, and it is only sent to rest.coinapi.io over https, with no redirects followed. Create a key with the fewest permissions the tools need (read-only if the provider offers it), and revoke it at the provider whenever you like.

Data sources

Live from the CoinAPI API (rest.coinapi.io) with a BYOK key; documentation: https://docs.coinapi.io/market-data/rest-api. Endpoints checked against that documentation on 2026-10-16.

What it is not

Unofficial connector by Unify Dynamics LLC: not affiliated with, endorsed by or sponsored by CoinAPI. CoinAPI and its logos are trademarks of their owners and are used only to say which service the connector works with. It is read-only: it never creates, changes, sends or deletes anything in your CoinAPI account.

Built for: Worldwide. Languages: English.