Hedera for Developers
@hedera_devs
Latest dev information on tooling, announcements, events, & resources to build successfully on @hedera. For network status, visit @HederaStatus.
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1/ CLPR is open source! And the HIP proposing it for Hiero is public now. Cross-ledger messaging is built on state proofs, so each ledger verifies the other's committed state using only the two ledgers' own consensus guarantees. A short overview 🧵👇
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Congrats to all five, and thanks to everyone who submitted.
The full write-up, with repos, demos and links for each build:
Mystic
A pay-as-you-go VPN. Log in with an email, buy WireGuard tunnel time by the minute, and each session settles as an HBAR transfer using the x402 exact scheme.
Qisma
exact-multi, an x402 v2 scheme that settles a whole machine-to-machine supply chain in one atomic CryptoTransfer.
One request pays an aggregator and its three upstream APIs at one consensus timestamp, for one fee. No splitter contract, no escrow.
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Xorv
Rent out the AI subscription quota you already pay for, get paid per job in USDC over x402.
HTS handles sub-cent transfers at a fixed fee, HCS holds the audit trail. The facilitator pays gas, so a buyer holding only stablecoin can transact.
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Tally
The first non-EVM implementation of x402's upto scheme. An agent signs one spending ceiling off-chain, gas-free, then pays only what was metered.
The cap is enforced in consensus against an HTS allowance, and every bill is hashed on-chain so you can recompute it.
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Pinout
One x402 payment becomes a metered session. Credits burn per second, the agent tops up mid-job without losing state, and the unused remainder is refunded on-chain.
Per-second checkpoints on HCS, settlement anchored to a HIP-991 topic. No contracts.
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The x402 bounty on Hedera is done. Five builds won $1,000 each.
Metered compute sessions, agent spend caps, atomic multi-party settlement, an AI quota marketplace, and a VPN you pay for by the minute.
All five run on testnet with public repos. Here's what they built 🧵
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Your Hedera EVM address can exist before the account does. Send a transfer to it and the network creates the account for you, no pre-created 0.0.x id required. How auto account creation works 🧵
The x402 bounty closes tonight, 11:59 PM ET. Last call to submit your pay-per-request build on Hedera.
