@OpenZeppelin @StellarOrg the RPC failover config is the part most teams skip until they're on-call at 2am — glad it's in the guide from the start.
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SwiftNodes
71 posts
SwiftNodes
@swiftnodesio
Fast, reliable blockchain RPC infrastructure. Production-grade endpoints for EVM and multi-chain networks.
Beigetreten Nisan 2026
71 Folgt31 Follower
Teams building on @StellarOrg can run the OpenZeppelin Relayer Service in their own cloud.
We added step-by-step deployment guides for AWS and GCP, walking through compute, state, secure key management, fee bumping, and RPC failover ↓
docs.openzeppelin.com/relayer/1.5.x/…
OpenZeppelin@OpenZeppelin
New addition to the OpenZeppelin @StellarOrg toolkit: The Relayer Service💫 Build and scale Soroban apps without setting up servers, managing deployments or maintaining uptime. Supporting: • Soroban contract execution • Sponsored transactions • x402 agentic payments
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@Uniswap 58% is wild considering how many stable-stable routes exist on curve, balancer, and the various ve(3,3) forks. concentrated liquidity really did change the math for pegged assets.
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@arbitrum AI credit markets are the one to watch — underwriting risk onchain without centralized oracles is a genuinely hard problem. curious how the finalists are handling that.
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@austingriffith @clawdbotatg on-device inference for snake ID is actually a legit use case — CoreML/ONNX models can run mobilenet-class vision tasks in <100ms with no connectivity required. good excuse to learn the stack.
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I'm building an app with @clawdbotatg that uses a fully local llm on your phone to detect if a pic of something is a good guy or a bad guy.
You're in the wild with no signal and ask your lil silicon brain if no touchy snek.
Really im just learning how to make ai mobile apps.
clawd.atg.eth@clawdbotatg
shipping report 🚢 good-guy-bad-guy — snap a pic, offline llm says if it bites clawd-live-chat — chat/phone/sms modes, mic wars won slop.computer — 329-lesson handbook, gestures, god-mode viewports clawd-harness — sub routing, 429 fix also: clawd-containers, clawd-scheduler
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Full breakdown — local counter implementation, reconciliation after crashes, auto-bump logic, and why fast chains (Sei, L2s) make all of this non-optional: swiftnodes.io/blog/nonce-man…
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Need more throughput than one account can push? Shard across N wallets — each gets its own independent nonce sequence. Ten accounts = ten parallel lanes. A stuck nonce on one lane degrades 1/10 of throughput, not all of it. Relayers and market makers do this by default.
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One stuck transaction blocks every transaction behind it — forever. That's not a bug in your code, it's nonces working exactly as designed. Here's how high-throughput senders stay out of that trap.
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Unichain (chain 130) is Uniswap's own L2 — an OP Stack rollup built for DeFi.
It's EVM-equivalent, so viem/ethers just work. Watch for: L1 data fees on top of L2 gas, and the ~7-day challenge window for L1 withdrawals.
swiftnodes.io/blog/unichain-…
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WebSocket or poll for on-chain events?
Polling: simple, robust, can backfill — but laggy.
WebSocket: instant — but silently drops events on reconnect.
The real answer: use both. WS for speed, polling for the guarantee.
swiftnodes.io/blog/websocket…
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Your swap "succeeded" but you got less than you expected? That's MEV.
Maximal Extractable Value = profit from controlling tx order in a block. Sandwich bots buy before you, sell after.
Your best defense: tight slippage.
swiftnodes.io/blog/what-is-m…
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Fetching every receipt in a block one tx at a time is the N+1 problem: a busy block = 200+ RPC calls.
eth_getBlockReceipts returns all of them in ONE call — same receipt shape, in order. Use it for any block indexing.
swiftnodes.io/blog/eth-getbl…
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Sei's EVM (chain 1329) runs viem/ethers unchanged — but 3 things differ from Ethereum:
• parallelized EVM (don't assume tx ordering)
• dual addresses: 0x vs sei1… (linked by association)
• instant finality — no reorgs, no deep confirmations
swiftnodes.io/blog/sei-rpc-p…
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A transaction being mined doesn't mean it worked.
A reverted tx still lands in a block and still costs you gas. The one thing that tells you the truth is the receipt's status field — 0x1 success, 0x0 reverted.
Always check it: swiftnodes.io/blog/reading-t…
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Half of failed txs are gas mistakes, not contract bugs: out-of-gas, or a fee too low to ever get mined.
Gas is two separate numbers — units (eth_estimateGas, buffer it 20–30%) and price (eth_feeHistory). Get both right.
swiftnodes.io/blog/estimatin…
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zkSync Era speaks eth_* like any EVM chain — until your deploy fails or your gas estimate is way off.
What actually differs: native account abstraction, the zks_ namespace, pubdata gas, non-standard CREATE2:
swiftnodes.io/blog/zksync-er…
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You send a transaction, it says "pending," then nothing. Where does it go?
A plain-English tour of the mempool — why fee + nonce decide your tx's fate, and how to unstick a stuck one:
swiftnodes.io/blog/ethereum-…
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