Send21 vs Stackduke Radar
Neck and neck on boosts. Profiles, pricing and deals below.
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.
Stackduke Radar
Radar, the MCP tool-change tracker
community boosts
⚡ 0
pricing
Freemium
what it is
MCP servers can change their tools at any time. See what official MCP servers let an AI agent do, and what changed, from Stackduke