head to head/Developer Tools

OptimistFi vs Send21

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

OptimistFi

Perps MCP for Claude: Funding, Open Interest & Risk

community boosts

⚡ 0

pricing

Paid

what it is

Perpetual futures in Claude: fresh Hyperliquid books, cross-venue funding, open interest and positioning. Read-only MCP with source clocks.

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.