Developers post live apps, integrations, or demos.

Ecosystem Showcase & Launches

Papaya is a recurring payment rail for stablecoins. A payment is opened once and streams per second in USDC until it's changed or stopped. No transaction per period, so collection never turns into a cron job per user, and the cost doesn't grow with how long a payment runs.

Gas on Arc is paid in USDC. Users fund, stream and pay fees in one asset, and the cost of running a subscription is predictable in dollars. That makes small recurring and per-minute payments practical.

- Creator: pick a monthly amount once and support a creator with a USDC stream. Change the rate or stop any time.

- Pay as you go: a scooter ride paid per minute. Start opens the stream, Stop closes it, you pay exactly for the time used.

- Papaya controls: fund your balance, set a refill budget for the keeper (or revoke it), create a stream to any address, see incoming and outgoing payments.

- Every tab has a "How it works" view with the exact contract calls.


deposit → subscribe(recipient, rate, projectId) → unsubscribe. The recipient withdraws everything accrued in one claim. Balances are updated from aggregated rates in constant time, so nothing has to run between user actions.


A keeper watches balances. If one runs low, it refills from the user's wallet within the budget the user approved. If there's no budget left, the streams stop.

Live on Arc mainnet (chain 5042), source-verified:

- Papaya protocol: 0xd7AbBB80894f35c139570d2DdDB90F99D4Fc92C7

- USDC: 0x3600000000000000000000000000000000000000

Non-custodial: Papaya holds no keys and users can withdraw any time. The contract owner cannot move user balances. There is no upgrade path.

Papaya already runs on 10 EVM chains, and Papaya DCA is live on Base with an integrated fiat on-ramp. The stream version of the protocol was audited by Stronghold Security. The Arc build is an experimental demo and hasn't been independently audited yet. We're part of the Circle Alliance Program. USPTO patent pending.

- Fixed periodic subscriptions on Arc ($10 a month, charged at the start of each period)

- A relayer, so users don't need to fund gas themselves

- First merchant and AI agent integrations on Arc

- Try the demo and tell us what breaks or feels confusing. Start with a small amount.

- Builders: if you need subscriptions, usage-based billing or agent payments on Arc, we'd love to integrate or compare notes.

- Building agents or paid APIs? Tell us which payment pattern you need: per call, per second, or a fixed plan.

Demo: 

https://github.com/Papaya-Finance/arc-demo

Papaya is live on Arc mainnet: recurring and pay-as-you-go USDC payments

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