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Welcome to Tributary Protocol

Open-source, permissionless automated payment infrastructure for Solana

Tributary brings Web2 subscription simplicity to Web3 with truly automated recurring payments—no manual signing every month, no deposits into contracts, funds flow directly from user token accounts.

What is Tributary?

Tributary is a protocol that enables automated recurring payments on Solana:

  • Open-source smart contracts for automated payments using token delegation
  • Developer SDKs for easy integration (TypeScript, React, Payments)
  • Permissionless access - anyone can build on top
  • Multiple payment types - subscriptions, milestones, pay-as-you-go

Key Features

✅ Payment Types

  • Subscriptions - Fixed recurring payments (daily, weekly, monthly, etc.)
  • Milestones - Project-based payments with up to 4 deliverables
  • Pay-as-you-go - Usage-based billing with period limits

✅ Developer Tools

  • TypeScript SDK - Complete protocol interaction
  • React SDK - Pre-built payment components
  • Payments SDK - Stripe-compatible checkout (zero API keys)
  • x402 SDK - HTTP 402 middleware for API monetization
  • CLI - Protocol management tools
  • REST API - Query subscriptions, events, manage webhooks
  • WebSocket API - Real-time payment notifications

✅ Protocol Features

  • Automated Execution - Payments execute automatically on schedule
  • Non-Custodial - Funds stay in user wallets
  • Low Fees - 1% protocol fee + configurable gateway fees
  • Action Codes - Wallet-less payment initiation
  • Full Control - Pause, resume, or cancel anytime

Architecture

┌─────────────────────────────────────────────────────────────┐
│                    PAYMENT PROVIDERS                        │
│   (Build user-facing services, dashboards, integrations)   │
└─────────────────────────────────────────────────────────────┘
                              │
                              ▼
┌─────────────────────────────────────────────────────────────┐
│                    TRIBUTARY SDKs                           │
│   TypeScript SDK │ React SDK │ Payments SDK │ x402 SDK     │
└─────────────────────────────────────────────────────────────┘
                              │
                              ▼
┌─────────────────────────────────────────────────────────────┐
│                 TRIBUTARY PROTOCOL                          │
│   Smart Contracts │ PDA System │ Fee Distribution           │
│   Program ID: TRibg8W8zmPHQqWtyAD1rEBRXEdyU13Mu6qX1Sg42tJ  │
└─────────────────────────────────────────────────────────────┘
                              │
                              ▼
┌─────────────────────────────────────────────────────────────┐
│                    SOLANA BLOCKCHAIN                        │
│   400ms finality │ Sub-cent fees │ Global access            │
└─────────────────────────────────────────────────────────────┘

Quick Start

pnpm install @tributary-so/payments @tributary-so/sdk @solana/web3.js

import { PaymentsClient } from "@tributary-so/payments";

const stripe = new PaymentsClient(connection, tributary);
const session = await stripe.checkout.sessions.create({
  mode: "subscription",
  line_items: [{ description: "Pro Plan", unitPrice: 10, quantity: 1 }],
  paymentFrequency: "monthly",
  tributaryConfig: { gateway, recipient, trackingId },
});

console.log(session.url); // Share this link!

React Component

import { SubscriptionButton, PaymentInterval } from "@tributary-so/sdk-react";

<SubscriptionButton
  amount={new BN(10000000)}
  recipient={recipient}
  interval={PaymentInterval.Monthly}
  label="Subscribe $10/month"
/>;

REST API

# Check subscription status
curl "https://api.tributary.so/v1/subscriptions?trackingId=my-sub"

Why Tributary?

Feature Tributary Traditional
Setup Seconds Days (KYC, approval)
Fees 1% 2.9% + 30¢
Settlement Instant 2-7 days
Chargebacks No Yes
Recurring Native Complex setup
Custody Non-custodial Custodial risk
Global No restrictions Country restrictions

Program Details

  • Program ID: TRibg8W8zmPHQqWtyAD1rEBRXEdyU13Mu6qX1Sg42tJ
  • Network: Solana Mainnet & Devnet
  • USDC Mint: EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v

Resources

Next Steps