Launched May 12, 2026
Tributary
The only payment infra with recurring payments on Solana.
FreePayments1,648 impressions#7 of its week
**Why Does It Exist:**
Accepting payments on Solana is still broken for most businesses. Crypto subscriptions require manual approval every billing cycle. Developers face a wall of complexity — wallet integrations, transaction parsing, RPC nodes, on-chain account deserialization. No unified protocol handles subscriptions, milestones, pay-as-you-go, and one-time payments in one place. Web2 businesses want to accept USDC but don't want to learn blockchain infrastructure.
**What it does:**
Tributary is production-grade payment infrastructure on Solana enabling automated recurring payments via USDC stablecoin delegation. Composable, non-custodial subscription billing that bridges Web2 payment UX with Web3 transparency. Supports subscriptions, milestones, pay-as-you-go, one-time, and up-to payment models.
**Who it's for:**
Developers and businesses accepting crypto payments (SaaS, API providers, freelancers, AI/agent services). Secondary: Web2 businesses wanting to accept USDC without learning blockchain. European fintechs looking for stablecoin billing aligned with MiCA.
**Stage:**
Just launched — mainnet deployed, 4 live integrations, zero marketing spend.
**Budget:**
$0 (bootstrap mode — free platforms only).
**Open source:**
Yes, fully. github.com/tributary-so
**Team:**
Germany-based (ChainSquad GmbH), built with European regulatory considerations from day one.
Tributary provides non-custodial, automated recurring payments on Solana using USDC delegation.
- for
- Developers and businesses needing crypto payment infrastructure, especially SaaS, APIs, freelancers, and AI services.
- pricing
- open source
- license
- MIT
- @tributary-so/contract-v2.0.0Release 2.0.03 months ago
- @tributary-so/cli-v2.0.03 months ago
- @tributary-so/landing-v1.4.08 months ago
works withSolanaUSDC stablecoinLighthouse validation assertionsMeteora DLMM swap
Key features
6 features of Tributary
- One-click delegation — Users sign once to delegate token spending; no escrow or custodial wallets required.
- Composable payment policies — Combine WHEN (conditions), PULL (amounts) and ROUTE (destinations) to create subscriptions, milestones, pay-as-you-go, and one-time payments.
- On-chain enforcement — Solana blockchain validates policies and executes pulls automatically under approved limits.
- Flexible routing — Route funds to wallets, DEX swaps (Meteora DLMM), lending, staking or any allowlisted Solana program.
- Usage-based billing — Support variable, usage-based amounts and up-to authorizations for pay-as-you-go models.
- Open-source SDK — Fully open-source code and SDK available on GitHub for easy integration.
Use cases
- Automated SaaS subscription billing with USDC on Solana
- Milestone-based payouts for freelance or project work
- Pay-as-you-go AI model usage charging
- Hot-wallet auto-top-up with balance checks and token swaps
- One-time invoice settlement without holding funds
Tributary vs alternatives
| Tributary |  GrineoPay |  Nadifin |  Tropayment |  PayRam | |
|---|---|---|---|---|---|
| Best for | Non-custodial recurring payments on Solana | General crypto payment API | Zero-KYC crypto payments | Merchant crypto gateway | Self-hosted crypto processing |
| Pricing | Open source | Free | One time fee | Free | Free |
| DevHunt upvotes | 0 | 1 | 0 | 1 | 1 |
| Launched | May 2026 | Jan 2027 | Mar 2026 | Apr 2028 | Sep 2027 |
- Tributary vs GrineoPay: Provides a non-custodial crypto payment API but not Solana-specific recurring primitives
- Tributary vs Nadifin: Focuses on fast crypto payments with zero KYC, lacking composable subscription logic
- Tributary vs Tropayment: Crypto gateway for merchants, primarily fiat-to-crypto conversion, not on-chain delegation
- Tributary vs PayRam: Self-hosted crypto processor with no KYC, but does not offer Solana-native policy engine
Tributary FAQ
How does Tributary avoid custodial risk?+
It uses token delegation; users approve a policy once and the protocol never holds their funds.
What payment models are supported?+
Subscriptions, milestones, pay-as-you-go, one-time payments, and up-to authorizations.
Do I need to run my own Solana nodes?+
No, Tributary handles RPC and on-chain interactions; you only need to integrate the SDK.
Is the solution open source?+
Yes, the code is fully open source on GitHub (github.com/tributary-so).
Can I route payments through other programs?+
Yes, funds can be routed to wallets, DEX swaps, lending, staking, or any allowlisted Solana program.
Summarized by DevHunt from tributary.so · Sep 29, 2026. Details may change; check the official site.
