CoinGecko CLI

Out of scope — cg does not support contract-address price lookups, global market stats (total market cap, BTC/ETH dominance), NFT detail endpoints, GeckoTerminal on-chain DEX queries, or token logo metadata. Fall back to WebFetch against docs.coingecko.com/llms.txt for those.

Prerequisites

Verify the CLI is installed:

command -v cg || { echo "cg not on PATH; install via: brew install coingecko/coingecko-cli/cg"; exit 1; }

Check authentication and tier without running interactive setup:

cg status -o json

The CLI reads CG_API_KEY and CG_API_TIER (demo or paid) from the environment. If cg status shows no key, ask the user before invoking cg auth — that command is interactive and writes config to disk.