Roberts Pumpurs writes about building things in Rust: blockchain protocols, AI coding agents, game experiments and what broke along the way.https://pumpurlabs.com/https://pumpurlabs.com/posts/002-rust-opentelemetry/https://pumpurlabs.com/posts/002-rust-opentelemetry/My venture into the land of observability in Rust, and trying to justify why it's worth it.Wed, 27 Sep 2023 00:00:00 GMTrustopentelemetrytracingobservabilityhttps://pumpurlabs.com/posts/006-the-context-game/https://pumpurlabs.com/posts/006-the-context-game/Everything competes for the same context window. Tools, MCPs, CLAUDE.md — it's all text. Here's how to play the game and win.Tue, 17 Mar 2026 00:00:00 GMTaiclaudepromptingworkflowhttps://pumpurlabs.com/posts/007-the-multiplayer-game/https://pumpurlabs.com/posts/007-the-multiplayer-game/The artifact pipeline, agent teams, parallel sessions, and managing 4 features at once. This is where the productivity flex pays off.Wed, 18 Mar 2026 00:00:00 GMTaiclaudepromptingworkflowteamhttps://pumpurlabs.com/posts/008-blockchain-builder-era/https://pumpurlabs.com/posts/008-blockchain-builder-era/Five years in blockchain, part 1. Provably-fair NFTs, renting without forced returns, and an AMM that tried to manage liquidity for passive LPs.Sun, 24 May 2026 00:00:00 GMTblockchaincareerrustretrospectivehttps://pumpurlabs.com/posts/005-why-are-you-not-claudemaxxing/https://pumpurlabs.com/posts/005-why-are-you-not-claudemaxxing/From mass-dismissing AI coding tools to managing 5 Claude sessions on a walk. A prompt school origin story -- and your first useful AI win.Mon, 16 Mar 2026 00:00:00 GMTaiclaudepromptingrusthttps://pumpurlabs.com/posts/009-axelar-solana-1232-bytes/https://pumpurlabs.com/posts/009-axelar-solana-1232-bytes/Porting Axelar general message passing to Solana meant fitting 27 secp256k1 signatures and multi-kilobyte payloads into a 1232-byte transaction ceiling.Mon, 25 May 2026 00:00:00 GMTblockchaincareerrustretrospectivesolanahttps://pumpurlabs.com/posts/010-irys-reth-shim/https://pumpurlabs.com/posts/010-irys-reth-shim/A technical map of consensus, EVM execution, storage chains, and the protocol engineering behind Irys Programmable Data.Tue, 26 May 2026 00:00:00 GMTblockchaincareerrustretrospectiveiryshttps://pumpurlabs.com/posts/011-blockchain-patterns/https://pumpurlabs.com/posts/011-blockchain-patterns/The closing post on five years of blockchain work: boundaries, bytes, compatibility, tooling, and the cost of making systems agree.Wed, 27 May 2026 00:00:00 GMTblockchaincareerrustretrospectivehttps://pumpurlabs.com/posts/012-writing-software-you-dont-run/https://pumpurlabs.com/posts/012-writing-software-you-dont-run/Patterns for building CLIs, protocols, and customer-hosted agents when old data, old binaries, and old users keep existing.Wed, 17 Jun 2026 00:00:00 GMTsoftware engineeringblockchainrustprotocolsagentshttps://pumpurlabs.com/posts/013-code-review-team-alignment/https://pumpurlabs.com/posts/013-code-review-team-alignment/AI makes code cheaper to write, so review has to move from inspecting every line to keeping the team aligned on intent, risk, and rollout.Mon, 06 Jul 2026 00:00:00 GMTaisoftware engineeringworkflowcode reviewhttps://pumpurlabs.com/posts/014-laya-game-comparison/https://pumpurlabs.com/posts/014-laya-game-comparison/Laya, a small 421M-parameter AI model, won 0 of 10 floors in my Rust game. Once Rust did the moving, it won 10 of 10. So did a bot picking at random.Fri, 09 Oct 2026 00:00:00 GMTairustgame developmentlayahttps://pumpurlabs.com/posts/016-dead-weight-tests/https://pumpurlabs.com/posts/016-dead-weight-tests/How per-test LLVM coverage, set comparisons, and assertion review find redundant Rust tests, and why matching coverage alone cannot justify deletion.Mon, 02 Nov 2026 00:00:00 GMTrusttestingaiopen sourcehttps://pumpurlabs.com/posts/003-first-online-hackathon/https://pumpurlabs.com/posts/003-first-online-hackathon/Diary and reflections of my first online hackathon and the absurdity of it.Mon, 23 Oct 2023 00:00:00 GMTrustdiaryblockchainmultiversexhackathonhttps://pumpurlabs.com/posts/004-one-knowledge-proof/https://pumpurlabs.com/posts/004-one-knowledge-proof/I learned the basics of Zero Knowledge Proofs, wrote some code, I am proud to present my one knowledge proof.Mon, 30 Oct 2023 00:00:00 GMTrustnoircryptographywebtypescriptwasmhttps://pumpurlabs.com/posts/001-asteroids/https://pumpurlabs.com/posts/001-asteroids/A blog post about my Asteroids game written in Rust and compiled to WebAssembly.Fri, 03 Sep 2021 00:00:00 GMTrustwebglwasmhttps://pumpurlabs.com/posts/015-supabase-rp/https://pumpurlabs.com/posts/015-supabase-rp/TypeScript gets generated types and typed queries on Supabase. Rust's usual answer, SQLx, goes around the API and RLS. supabase-rp closes the gap.Thu, 22 Oct 2026 00:00:00 GMTrustsupabaseopen source