Cryptocurrency · head-to-head
CoinGecko vs Mempool
CoinGecko is one of the largest independent crypto data aggregators, tracking price, market cap, volume, and metadata for 17,000+ coins across 1,000+ exchanges without requiring registration for its free public endpoint. A Demo API key unlocks slightly higher limits, while paid Pro plans add exchange order-book data, NFT floor prices, and on-chain DEX data through the same JSON interface.
mempool.space runs an open-source Bitcoin block explorer and fee-estimation API — originally forked from Blockstream's Esplora backend and now maintained as its own mempool/electrs fork — answering over REST and WebSocket with no signup needed to read blocks, transactions, addresses, and the Lightning Network graph. It's free for public use, with a paid Mempool Enterprise tier adding unmetered access and multi-datacenter SLAs for heavier commercial traffic.
| CoinGecko | Mempool | |
|---|---|---|
| Authentication | None | None |
| Pricing | freemium | freemium |
| Formats | JSON | JSON, WebSocket |
| CORS | yes | yes |
| HTTPS | Yes | Yes |
Mempool supports 2 response formats, while CoinGecko offers fewer — pick Mempool for more integration flexibility.