Helius @Helius
The API for internet finance. Solana RPCs, APIs, HFT infra, and data. Discord: https://t.co/TVc0YoxbEg helius.dev helius.dev Joined June 2022-
Tweets3K
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Following141
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Works on accountSubscribe and programSubscribe over WebSocket For gRPC use the Helius LaserStream SDK (default Yellowstone clients don't support the new notifyOn field) Docs here: helius.dev/docs/laserstre…
Set notifyOn to "write" and you only get notified when a transaction writes to the account - same data, minus the noise Dropped updates are exact duplicates of state you already have Try it with this request:
Streaming a busy Solana account sends lots of duplicate updates The validator fires updates even when nothing actually changed The new notifyOn filter drops the majority of those no-ops Live now for LaserStream gRPC & WebSockets
you're leaving milliseconds on the table waiting for shreds solana preconfirmations are the earliest transaction signal traders can stream, often 5-50ms faster than raw shreds we explain preconfs, how they work, and what you can build with them only on the @Helius blog
Wrote a beginner-friendly developer guide to building subscriptions on Solana Recurring payments used to be really hard, now they're easy. In fact, we already use them at Helius for onchain API plan renewals with USDC Learn more and build: helius.dev/blog/solana-su…
Why it matters for validators: All Solana validators can earn revenue by forwarding their preconfs The more stake that participates, the fewer coverage gaps traders see, improving preconfs for the whole network Open to everyone. Sign up here: helius.dev/validator-mone…
Preconfs are early signals (tx hasn't landed yet) To act on it, pair it with Sender Max for the fastest landing rates Live now for Professional plans and above Docs: helius.dev/docs/pre-confi…
NEW: Preconfirmations See transactions the moment a validator commits to executing them That's 5-50 milliseconds BEFORE transactions are turned into shreds, and the earliest a tx can be observed on Solana All delivered via one new WebSocket subscription: preconfSubscribe
most rpc benchmarks are horribly flawed they are not global, run over home internet, ignore tail latencies, omit data freshness/correctness, and cherry-pick time-ranges today we're releasing a new, open-source RPC benchmarking tool featuring: - 24/7 coverage - randomized inputs (cannot be cached/gamed) - freshness & correctness checks - multi-provider support (TSW, AWS, GCP, CF) - global coverage (US, EU, APAC) - user-specific scoring method (configurable)
Almost every Solana validator is writing shreds into the same storage engine Meta uses to run MySQL at Facebook scale I got nerd-sniped by our eng team into going down the RocksDB rabbit hole Read on the @Helius blog about what RocksDB is, how it works, and why Agave uses it
Helius so far has helped over 135 startups with subsidized RPC plans and pitch deck help via our startup launchpad that is hundreds of thousands of dollars in support for those who chose to build on Solana if you want to win, come to Solana and give me a ring
Solana Agave 4.1 is here! Release cycle highlights: - Alpenglow readiness: BLS pubkeys & VAT - More Pinocchio programs: p-memo & p-ATA - Further adoption of XDP - Reduced validator RAM usage - Faster major releases (every ~6 weeks) - Preparation for 200ms slot times
Get a wallet's balance at any point in time The new balance-at endpoint returns a wallet's exact SOL or SPL token balance at a given date or slot How much USDC did a wallet hold at 19:20 on Jan 10, 2025? Now it's a single call Ideal for PnL, charts, snapshots, and cost basis
@therealricoy +1 to this. Early on we had some pretty specific features requests and they pulled an all nighter to have it live the next day We haven’t made feature requests in a long time because they keep shipping their stuff just works The @Helius team is on another level
Helius has shipped so much gamechanging stuff that we take it for granted
Try it today with this request Learn more: helius.dev/docs/wallet-ap…
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