| argument-hint | <coin-id> <date> |
| disable-model-invocation | false |
| model | opus |
| name | coingecko-historical |
| user-invocable | true |
| description | Use to open CoinGecko historical-data pages in the default browser for a coin/date or to show historical price on date X. |
CoinGecko Historical
Open the CoinGecko historical-data page for a coin in the user's default browser, centered on a one-day window around a target date.
Arguments
- coin-id (required): CoinGecko coin slug (e.g.,
bitcoin, ethereum, solana). This is the same ID used by the CoinGecko API and the cg CLI — not the ticker symbol. If the user provides only a symbol or name, resolve it first (e.g., cg search <term> -o json or https://api.coingecko.com/api/v3/search?query=<term>).
- date (required): Target date in
YYYY-MM-DD format.
Behavior
Compute DATE-1 (the day before date) and DATE+1 (the day after date), then open:
https://coingecko.com/en/coins/<coin-id>/historical_data?start=<DATE-1>&end=<DATE+1>
Use the macOS open command:
open "https://coingecko.com/en/coins/<coin-id>/historical_data?start=<DATE-1>&end=<DATE+1>"
Date arithmetic
Use BSD date (default on macOS) to compute the surrounding days:
start=$(date -j -v-1d -f "%Y-%m-%d" "$DATE" +%Y-%m-%d)
end=$(date -j -v+1d -f "%Y-%m-%d" "$DATE" +%Y-%m-%d)
Example
User invokes: /coingecko-historical bitcoin 2024-03-14
Run:
open "https://coingecko.com/en/coins/bitcoin/historical_data?start=2024-03-13&end=2024-03-15"
Notes
- Validate the date format before computing offsets; stop and ask the user if
date is missing or malformed.
