head to head/Developer Tools

Layer vs Send21

Neck and neck on boosts. Profiles, pricing and deals below.

Layer

one API for Kalshi and Polymarket

community boosts

⚡ 0

pricing

Paid

what it is

One API for prediction markets. Find markets, stream normalized data, place orders, and track positions across Kalshi and Polymarket.

Send21

Try a crypto pay link on testnet, no account

community boosts

⚡ 0

pricing

Freemium

what it is

Make a real test payment from your own wallet on Bitcoin, Solana, Ethereum, Base, Arbitrum and Polygon test networks. No account, no email.