StreamPay

Problem

Salary arrives as one lump sum at the end of the month, even though the work it pays for happened continuously. Employees wait weeks to touch money they have already earned.

Solution

Built on Superfluid’s Super Tokens, which extend ERC-20 with constant flow agreements. An employer paying 4000 USDC a month opens a stream, and the balance accrues to the employee every second instead of arriving in one transfer. The employee can withdraw at any point; there is no payday to wait for.

Architecture

A Solidity contract creates and manages Superfluid money streams between employer and employee accounts on an EVM testnet, with a Node.js backend for account and stream management.

Engineering decisions

• Superfluid’s constant flow agreements over a custom vesting contract, since the streaming primitive is audited and settles on every block
• USDC as the streamed token so salary amounts stay dollar-denominated

Technology

Solidity · Superfluid · Node.js · Ethereum · USDC

Results

• A working stream where a 4000 USDC monthly salary accrues per second and is withdrawable any time

What Daniel learned

Superfluid’s constant flow agreement replaces payday with a balance that never stops moving. The whole concept of "waiting for your salary" disappears once the stream is open.