GrowTendril is live on Arc mainnet 🌱 Growth agent for builders. Scans your market, scores customers and creators, scouts influencers, writes campaign briefs. Every service paid in USDC on Arc. No subscriptions. I'm shipping this for @thecanteenapp's Arc Open Source Showcase, so here's what's live on mainnet, how it works, and what I learned building on Arc 👇 ━━ Open source toolkit (the forkable part) arc-growth-tools is Apache-2.0, zero runtime dependencies, no GrowTendril UI or database required. Import one module or all of them: ➛ commerce: replay-safe capture/refund reducer for merchant payment events ➛ outcomes: refund-aware eligibility hold + bounded reward math (integer micro-USDC) ➛ policy: spend reservations with approval bound to the exact payment intent (no double-spends on retry) ➛ evidence: on-chain USDC transfer matching + signed, portable receipts anyone can verify ➛ escrow: ABI and bytecode matcher for the deployed mainnet contract This is the layer between "a sale happened on-chain" and "a reward got paid safely." It builds on arc-commerce and arc-p2p-payments without reimplementing wallets, x402, or bridges. 🧰 github.com/drained69/arc-gro… ━━ What's live on Arc mainnet (chain 5042) 1. Pay-per-service USDC billing Scan 2 USDC. Influencer report 3. Campaign brief 2 (first per creator free). Each invoice gets a unique amount; the server matches your Arc payment to its invoice automatically. Each tx hash can only be claimed once. Failed scans refund automatically before any retry. 2. Circle developer-controlled workspace wallets Every withdrawal and send passes a spending-policy check before Circle App Kit broadcasts on Arc. 3. Creator payouts Policy check → founder approval → Circle send on Arc → on-chain reconciliation against the approved recipient and amount. Mismatches become exceptions, never silently marked paid. 4. x402 agent purchases Agent gets a live quote from Circle's x402 marketplace, estimates whether the info is worth the price, passes policy/budget/approval, then pays through Circle Gateway. Authorization and final settlement are tracked separately. 5. Merchant sales connector Reads Circle AuthCaptureEscrow logs on Arc and turns captures/refunds into attributed outcomes. A merchant webhook alone cannot create a sale; it needs a canonical on-chain receipt. 6. OutcomeRewardsEscrow contract 0x2964e74d30413de186f5f4936eb133ab815845d3 Verified on Sourcify (exact match, creation + runtime bytecode). Enforces a funded cap, one reward per recipient, bounded quality/outcome bonuses, 72-hour refund hold, dispute resolution. Deployed but not funded yet — creator payouts stay on the Circle route until an independent security review lands. Sourcify: repo.sourcify.dev/5042/0x296… ━━ What I learned building on Arc Arc already has most of what a normal business needs to take and move money. I didn't have to build any payment rails. GrowTendril uses: ➛ A plain USDC address for billing. Customers pay from any wallet, the app reads the transfer on-chain and adds credit. No card processor, no chargebacks, no waiting days for a payout. ➛ Circle wallets and App Kit to hold workspace funds and send creator payouts on Arc. ➛ Circle Gateway and x402, so the agent can buy data within a budget. ➛ Circle's AuthCaptureEscrow for merchants who capture and refund orders. Gas is paid in USDC too, so customers only ever hold one token. Deploying the escrow contract cost about 3 cents. What was missing was the business logic in between. If a sale gets refunded after a reward was promised, what happens to the reward? How do you stop a retry from paying someone twice? How do you prove a payout actually landed? That's the code I wrote, and it's what I open-sourced in arc-growth-tools. Two things worth knowing if you build on Arc: ➛ USDC has 18 decimals as gas and 6 as an ERC-20 token. Pick one unit for your app (I use micro-USDC) and only convert at the edges. ➛ A native USDC send doesn't show up in the USDC contract's Transfer logs. Watch Arc's system emitter (0xffff…fffE) instead, or you'll miss payments. ━━ Composable primitives, if you want to fork them ➛ Replay-safe commerce event reducer ➛ Refund-aware eligibility hold ➛ Bounded reward calculator in micro-USDC ➛ Exact-intent spend reservations ➛ On-chain transfer matcher ➛ Signed, portable payment receipts Everything above is in the toolkit. Fork it, import one subpath, or deploy the escrow with your own hold period. 🌐 growtendril.xyz 🧰 github.com/drained69/arc-gro… 📦 github.com/drained69/GrowTen… 📜 Contract: 0x2964e74d30413de186f5f4936eb133ab815845d3 Shipping composable Arc tooling for @thecanteenapp 🥚

Introducing GrowTendril 🌱 Most businesses spend money on creators, content, research, ads, and growth tools, but still struggle to answer basic questions: What is actually bringing us customers? Which creator is creating real value? What should we try next? Where is our budget going, and is any of it producing revenue? GrowTendril addresses each of this. It is an AI growth operator that helps a business understand its market, discover customer demand, find relevant creators, run growth experiments, control spending, and measure what leads to paying customers. You begin by giving GrowTendril your website and some information about your business. It studies your product, target audience, positioning, competitors, market, and location, then creates a product intelligence profile that you can review and correct. From there, it searches public sources for signs of real demand: people asking for recommendations, discussing relevant problems, comparing alternatives, launching products, hiring, or showing other signals that they may need what you offer. The goal is to find useful opportunities, not generate a huge list of random leads. GrowTendril also helps businesses discover creators who are already talking about the right subjects. It does not rank them mainly by follower count. It looks at topic relevance, recent activity, audience fit, engagement quality, real discussion, previous coverage of your market, and authenticity. This is important because a large audience does not always mean real influence. Automated feeds, repetitive link posts, promotional spam, and suspicious engagement should not receive the same score as a real creator producing thoughtful work. GrowTendril detects those patterns and limits the scores of accounts that appear automated. Businesses can then create creator campaigns with a clear brief, campaign goal, available slots, budget, and reward structure. A creator can accept an invitation, verify their account, publish their work, submit the post, and track their reward. Their reward can include a base payment for accepted work, a quality bonus for useful and original content, and an outcome bonus for verified customer results. I want creators to be rewarded for the value and quality of their contribution, not simply for posting or having a large following. GrowTendril also treats the growth budget like a real operating system. The business sets the mission, total budget, category allocations, daily spending limit, and maximum payment size. Every proposed payment passes through a deterministic policy engine. Payments that require human review are sent to an approval inbox, so the business remains in control. Creator rewards and other approved payments can be settled in USDC on Arc using Circle developer-controlled wallets. Each payment has a recorded decision, amount, recipient, status, and receipt. GrowTendril can also send updates to Slack, Discord, or a signed JSON webhook when an approval is needed, a payment settles or fails, a growth cycle finishes, or a creator submits a post. But the most important part is measurement. GrowTendril connects growth activity, creator work, spending, referrals, conversions, and customer value. The aim is to help a business understand what it spent, which campaigns brought paying customers, what each customer cost, which creators created measurable value, and what should be repeated or stopped. I’m building GrowTendril because smaller businesses deserve more than disconnected dashboards, vanity metrics, and expensive guesswork. They deserve a system that helps them make growth decisions, keeps spending accountable, and learns from real outcomes. 🌱 growtendril.xyz