--- title: "x402 bounty on Hedera winners announced" id: "23190" type: "post" slug: "x402-bounty-on-hedera-winners-announced" published_at: "2026-08-31T14:34:45+00:00" modified_at: "2026-08-31T15:01:27+00:00" url: "https://hedera.com/blog/x402-bounty-on-hedera-winners-announced/" markdown_url: "https://hedera.com/blog/x402-bounty-on-hedera-winners-announced.md" excerpt: "Hiero CLI is a command-line tool for developers working with the Hedera and Hiero ecosystems. Its purpose is not only to expose individual commands, but also make common Hedera workflows easier to run, repeat, test, and automate from the terminal." taxonomy_category: - "Uncategorized" --- [Skip to content](#content) blog # x402 bounty on Hedera winners announced August 31, 2026 Jake Hall Developer Relations Engineer, UK ## Introduction The x402 bounty closed on 31 July. Five developers each received $1,000 for builds that use x402 to turn an API into a pay-per-request endpoint on Hedera. x402 lets a caller pay per request rather than hold an API key or a subscription. The caller hits the endpoint, pays in HBAR or USDC on Hedera, and gets the response. Every winning build below runs on Hedera testnet with a public repo. ## Pinout, by Hitakshi Arora Pinout turns a single x402 payment into a metered session. Credits burn by the second or by the token as work runs, the agent tops up mid-job without losing state, and the unused remainder is refunded on-chain. It uses two tiers of the Hedera Consensus Service: a plain topic for cheap per-second burn checkpoints, whose consensus running hash the seller cannot restate, and a [HIP-991](https://hips.hedera.com/#hip-991) fee-charging topic as the final settlement anchor, which costs the seller real HBAR to write. The facilitator pays all network fees and there is no smart contract, so any buyer can recompute the whole bill from the free public mirror node. Pinout Compute is the first service built on it. It rents CPU and NVIDIA GPU machines, T4 up to B300, by the second, so an agent can hold a machine, run code, move files on and off, and pay only for the seconds it held. Repo: [https://github.com/hitakshiA/pinout](https://github.com/hitakshiA/pinout) Live: [https://pinout.club/](https://pinout.club/) ## Tally, by Madhav Gupta Tally is the first non-EVM implementation of x402’s `upto` scheme. An AI agent signs one spending ceiling off-chain, gas-free, then pays only the amount actually metered rather than the ceiling, with a facilitator sponsoring settlement so the agent never sends a transaction. The Hedera Smart Contract Service enforces that cap in consensus through an admin-less Permit2 equivalent that spends an HTS allowance under [HIP-336](https://hips.hedera.com/#hip-336) and [HIP-376](https://hips.hedera.com/#hip-376) , bound to a single payee. Every bill is signed to HCS and hashed into the on-chain Captured event, so anyone can recompute unit price × units from the public Mirror Node. [HIP-991](https://hips.hedera.com/#hip-991) handles bonded disputes. It ships as three npm packages and an MCP server, and the `upto` scheme was submitted upstream to the x402 protocol repo. Repo: [https://github.com/Madhav-Gupta-28/Tally](https://github.com/Madhav-Gupta-28/Tally) Live: [https://hedera-tally.vercel.app/app](https://hedera-tally.vercel.app/app) Audit any bill with no setup: `npx x402-hedera-receipts audit --topic 0.0.9557142` Enforcement contract: [https://hashscan.io/testnet/contract/0.0.9556979](https://hashscan.io/testnet/contract/0.0.9556979) ## Xorv, by Nivesh Xorv is a decentralised marketplace for idle AI subscription quota. People rent out the Claude, Codex or Grok plan they already pay for and get paid per job in USDC over x402. It settles with the Hedera Token Service for sub-cent USDC transfers at a fixed, predictable fee, and writes an append-only audit trail of registrations, liveness and receipts to the Hedera Consensus Service without deploying a contract. Hedera’s native fee-payer model is what makes it work: the facilitator co-signs and pays the gas, so a buyer holding nothing but a stablecoin can transact. Repo: [https://github.com/nickthelegend/xorv](https://github.com/nickthelegend/xorv) Live: [https://xorv-app.vercel.app](https://xorv-app.vercel.app) CLI: `npm i -g @xorv/cli` ## Qisma, by Farouk Allani Qisma implements exact-multi, a conformant x402 v2 payment scheme that settles an entire machine-to-machine supply chain in a single atomic Hedera CryptoTransfer. One buyer request pays an aggregator and its three upstream APIs at one consensus timestamp, for one network fee, with no party ever holding another party’s funds. It uses native HBAR transfers for the atomic multi-party split, the Hedera Consensus Service to publish an independently auditable receipt for every settlement, and the free public Mirror Node so all four sellers verify their own payment by proof of inclusion while holding zero private keys. Hedera’s transfer primitive makes the multi-party atomicity possible with no splitter contract and no escrow. Repo: [https://github.com/farouk-allani/qisma](https://github.com/farouk-allani/qisma) ## Mystic, by Mohammad Mudassir Mystic is a pay-as-you-go VPN. You log in with an email, buy WireGuard tunnel time by the minute, and each session settles as a real HBAR transfer on Hedera testnet using the x402 exact scheme. Repo: [https://github.com/mdmudassir0143/Mystic](https://github.com/mdmudassir0143/Mystic) ## Closing Every build above is open source and runs on testnet today. The repos are the fastest way to see how x402 settles on Hedera in practice. Note: some projects choose to delete or privatise repos after judging is complete. [Back to Blog](/blog) discover See more articles [View All](/blog) August 5, 2026 ### Details decide. What digital asset policy did in July 2026 Halfway through 2026, the regulatory picture is coming into focus. Hedera Chief Policy Officer Nilmini Rubin and VP Global Policy Isadora Arredondo break down what moved in June across the [Read More](https://hedera.com/blog/details-decide-what-digital-asset-policy-did-in-july-2026/) July 17, 2026 ### Deploy Multichain Dapps on Hedera in 60 Seconds with scaffold-hbar Deploying multichain dapps on Hedera has never been easier! With just one command, you can spin up a fully functional dapp using Next.js, Hardhat or Foundry, and AI agent context… [Read More](https://hedera.com/blog/deploy-multichain-dapps-on-hedera-in-60-seconds-with-scaffold-hbar/) July 13, 2026 ### Regulation is finding its form in summer 2026 Halfway through 2026, the regulatory picture is coming into focus. Hedera Chief Policy Officer Nilmini Rubin and VP Global Policy Isadora Arredondo break down what moved in June across the [Read More](https://hedera.com/blog/regulation-is-finding-its-form-in-summer-2026/) ## Ready to get started? 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