Solana engineer · Agent × on-chain infrastructure · Since 2021

I've been shipping on Solana since 2021.

From an inaugural Solana Hacker House to a live token, a Solana MCP server, 26 on-chain Anchor programs, and cold-custody infrastructure for autonomous agents. Production work across NFTs, DeFi, mobile, and the agent-to-chain tool layer — most of it public and verifiable.

See the work GitHub ↗

2021

First shipped on Solana

Open-source Solana repos

Live

$COLD token · Seeker dApp

“I got the letter from Hogwarts. From the Solana Foundation, Launch House: you've been cordially invited. And you're just like — I made it, Mom.”

On camera on how it started — the inaugural Solana Hacker House in Beverly Hills — and where it led, from NFTs to global financial technology at scale.

▶ 0:51 clipInterview by @fluffyonchain

Selected Solana work — live and verifiable.

The through-line: connecting autonomous agents to the chain, and securing the keys that lets them act.

┌─ air-gap signer ─────────┐ │ key exposure ~100µs │ │ jupiter swap ✓ signed │ │ squads 2-of-3 ✓ quorum │ │ pyth feed ✓ fresh │ └──────────────────────────┘

Cold custody for agents

● Product · coldstar.dev

On-chain & ecosystem proof.

A live token, DAO governance, and ecosystem working groups — all publicly verifiable.

$COLD Token · mainnet

Live on Solana mainnet — EasyA Kickstart launch, Meteora liquidity, CoinGecko-listed. Contract hhB7…CSEASY, verifiable on Solscan.

CoinGecko · Solscan ↗

Jupiter DAO Governance

Part of the OG JUP HAUS Working Group — the Media House / Incubator inside Jupiter DAO. Direct participation in Jupiter's governance and builder programs.

discuss.jup.ag ↗

Meteora × Jupiter Proposal

Named in the MET DAO × JUP DAO collaboration — LP Army Bootcamp & JUPuary House Incubator, a cross-DAO liquidity + builder program on Meteora governance.

proposals.meteora.ag ↗

Solana Embassy Talk

Purple Squirrel Media's pitch at the Solana Embassy — presenting Purple Squirrel DAO and its decentralized-media vision on Solana. Recorded.

YouTube ↗

Hackathons Track record

Built across Colosseum (SolMail, Coldstar), the Graveyard Hackathon (protocol revivals, OpenPaw), Grizzlython (video NFTs), Meteora DLMM, and EasyA Kickstart.

Agents, DeFi, mobile, security.

Hackathon builds, audits, and tooling — status labelled honestly, most linked to source.

NFTs · MetaplexLive

PURPLEX — NFT marketplace

Purple Squirrel's NFT marketplace on Solana mainnet, built on Metaplex's storefront: explore, collections, creator pages, NFT creation and on-chain auctions. Rooted in the Candy Machine v2 video-NFT minting first built at Launch House.

Metaplex · Solana mainnet · purplex.purplesquirrel.media ↗

Agent · SeekerOpen source

OpenSeeker

An AI-agent OS for the Solana Seeker phone — autonomous trading, Jupiter swaps, a Telegram relay, and 42+ agent skills.

JavaScript · Jupiter · Seeker ↗

Agent · JupiterOpen source

jupiter-mcp

An MCP server for the Jupiter Developer Platform — 17 tools spanning swap, tokens, price, lend, limit orders, DCA, and price alerts.

TypeScript · Jupiter API ↗

Data · RPC / indexingOpen source

Solana Analytics

A CLI for on-chain Solana program analytics — transaction history, success rates, compute units, and fees, straight off high-performance RPC.

TypeScript · RPC · DAS ↗

Payments · Solana PayDemo

solana-tap-pay

A merchant tap-to-pay terminal settling USDC on Solana — PWA terminal plus a Cloudflare Worker verifier, with an Android Web-NFC / HCE spike. Built and verified locally.

Solana Pay · USDC · PWA + Worker

34 open-source Solana repos.

Grouped, all linked — public under github.com/ExpertVagabond in Rust, Anchor, and TypeScript.

Agent × Solana infrastructure 6

jupiter-mcpMCP server for Jupiter Developer Platform — 17 tools covering … openseekerAI Agent OS for Solana Seeker phone — autonomous trading, Jupi… solana-ai-companionAutonomous AI companion for Solana — hackathon project solana-mcp-serverSolana MCP server for wallet management, transactions, and pro… solana-narrative-trackerAI-powered signal detection for emerging Solana ecosystem narr… solmail-mcpMCP server for sending physical mail with Solana cryptocurrenc…

On-chain programs · Anchor / Rust 17

26 deployable Anchor programs across these public repos — 14 SPL/DeFi primitives bundled in solana-programs-sdk, plus 12 ported protocol programs (Tribeca ×5, Cardinal ×5, Strangemood, Port).

gum-protocolGum Protocol — on-chain social media primitives for Solana (pr… solana-airdropMerkle-proof airdrop distributor for gas-efficient token distr… solana-analytics-dashboardCLI tool for on-chain Solana program analytics — transaction h… solana-dao-votingToken-weighted DAO governance with proposals, voting, and exec… solana-escrowTwo-party on-chain SPL token escrow with atomic settlement solana-multisigMulti-signature wallet with configurable threshold approvals solana-nft-gatedNFT-gated access control for on-chain resources and programs solana-nft-mintNFT minting program with collection and Metaplex metadata mana… solana-orderbookOn-chain central limit orderbook with bid/ask matching engine solana-price-feedOracle-style on-chain price feed with staleness checks and con… solana-programs-sdkTypeScript SDK for 14 Solana Anchor programs — IDLs, PDA helpe… solana-reputationOn-chain wallet reputation system with endorsements and scoring solana-staking-poolReward-bearing SPL staking pool with accumulated rewards distr… solana-subscriptionRecurring subscription payment protocol on Solana solana-token-faucetRate-limited SPL token faucet with per-wallet cooldowns solana-token-vestingSPL token vesting with linear unlock schedules and cliff perio… solana-treasury-vaultRate-limited treasury vault with configurable spending periods

Revived protocols · Graveyard Hackathon 7

cardinal-nftCardinal Labs - NFT token manager for rentals, staking, subscr… cykura-ammCykura - Concentrated liquidity AMM on Solana friktion-voltsFriktion Volts frontend — structured DeFi products on Solana (… port-lendingRevival of port-finance/variable-rate-lending — Solana lending… strangemood-gamestoreStrangemood - Decentralized game store on Solana strangemood-revivalStrangemood Revival — Decentralized game store on Solana, port… tribeca-daoRevival of TribecaHQ/tribeca — Solana DAO governance toolkit. …

Mobile · Seeker · wallets 1

seekerchatToken-gated chat for Solana Saga and Seeker phone owners. Expo…

Coldstar · cold custody 3

coldstar-colosseumAir-gapped Solana cold wallet. Bootable USB + Alpine Linux, Ed… coldstar-dappTypeScript homebrew-coldstarHomebrew tap for ColdStar — air-gapped Solana cold wallet CLI

Browse all Solana repos on GitHub ↗

Plus a larger private body of work — the full Coldstar repo family (secure Rust core, vault, seeker, guardian-agent), solana-tap-pay, and the Solana x402 payment stack — available on request.

Published — crates.io & npm.

Shipped as packages with public download counts. The Coldstar Rust cold-custody core lives here.

crates.io · Coldstar Rust core 15+

coldstar-signerSecure signing — AES-256-GCM, Argon2id, Ed25519 · ↓558 coldstar-networkSolana RPC client, JSON-RPC 2.0 + SPL · ↓233 coldstar-walletKeygen, encrypted storage, backup · ↓321 coldstar-zkZK proof engine — Schnorr ownership · ↓207 coldstar-usbUSB detection + transaction shuttle · ↓323 coldstar-tuiratatui interactive wallet UI · ↓141

crates.io · Solana crates 4

solana-programs-sdkProgram IDs + PDA helpers, 14 programs solana-narrative-trackerAI narrative detection for Solana coldstar-daoDAO governance, epoch-based rewards coldstar-voter-stake-registryVSR for Coldstar DAO governance

npm · agent tooling 5

solana-mcp-serverSolana as agent tools coldstar-mcpMultichain agent-signing MCP (Solana + Base) solmail-mcpPhysical mail paid in Solana solana-analytics-dashboardOn-chain program analytics

crates.io ↗ npm ↗

Writing on Solana.

A book, and published essays from the PURP-on-Solana era — thesis, tokenomics, and protocol design.

Accelerate Solana Consensus — the book

Six years of building the fastest chain on Earth · Amazon

PURP on Solana: an L3 blockchain & community

Solana · L3 · AI

PURP pricing strategy on Solana

Tokenomics · DLMM · liquidity mining

Purple Squirrel, Mapped — a Solana whitepaper

Whitepaper · Jupiter · NFT marketplace

The Purple Paper: an on-Solana NFT generator

NFT · protocol design · art

Fixed token supply ahead of a Jupiter listing

Solana · Jupiter · tokenization

Content monetization on Solana

Solana · OTT · AI · blockchain

PURP on Solana: the Saga airdrop

Solana · Saga · airdrop

A decentralized media-distribution platform

Decentralization · monetization

All essays on Medium ↗

The protocols and infra I build on.

Integrated in shipped products — swaps, feeds, multisig, mobile, RPC, and NFTs.

Solana

Jupiter

Pyth

Rust

Thirdweb

Helius

Metaplex

Superteam

Colosseum

AnchorRustSPL Token@solana/web3.js JupiterMeteoraSquads multisigPyth Seeker / Solana MobileMobile Wallet AdapterSeed Vault MetaplexHelius RPC / DASSolana Pay RealmsThirdwebMagic EdenModel Context Protocol

These are protocols and infrastructure I've built on and integrated in production — a statement of hands-on surface area, not a claim of formal partnership.

Five years on-chain, in order.

Where the work started and how it compounded.

2021 · Beverly Hills

Launch House — Solana Foundation × a16z Crypto

Inaugural Solana Hacker House resident. Shipped Metaplex video-NFT minting with livestreaming and Solana Rewards — my first production Solana build.

2021 – 2022

NFTs on Solana

Purple Squirrel NFTs — a Solana collection built on Thirdweb.

2022 – 2024

Ecosystem builder programs & community

Ran a "PURP on Solana" builder airdrop and whitelist campaign, with Meteora DLMM liquidity. Community creative for the OG JUP HAUS working group in Jupiter DAO. Co-hosted House of ZK with Metis at ETH Denver 2024.

2025 · Denver

Resident Developer — House of Ink (Kraken) · DevRel — ZetaChain

Built SINT, a voice-activated autonomous agent, live during the Kraken residency. At ZetaChain I was the only US developer relations hire, on a remote team of three, and shipped a multi-chain MCP server spanning Solana and other chains.

2026 · Graveyard Hackathon

Reviving the Solana protocol graveyard

Ported a run of deprecated Solana protocols back to modern Anchor (0.30) and current SDKs — Tribeca DAO, Port Lending, Cykura AMM, Friktion Volts, Strangemood — alongside a family of on-chain SPL primitives (multisig, escrow, vesting, staking, orderbook, Merkle airdrop) wrapped in a typed solana-programs-sdk.

2026

Coldstar, the agent bridge, and a live token

Launched $COLD (EasyA Kickstart, Meteora, CoinGecko-listed) and shipped the Coldstar Seeker dApp. The Solana MCP server passed 2,300 npm downloads in a year; built jupiter-mcp and openseeker. Four hackathon wins, plus a pitchathon with EasyA and Superteam Ireland.

In the ecosystem, in person.

Consensus, Solana Skyline, ETHGlobal — the network behind the repos.

Consensus 2026 badge with Solana lanyard, Miami — Consensus 2026 · Miami

At the Solana Skyline space — Solana Skyline

With builders at ETHGlobal NYC — ETHGlobal · NYC

Where this maps to the teams I'd build with.

Not a wishlist — each is grounded in work already shipped.

Jupiter Swaps · DeFi · DAO

In the OG JUP HAUS working group in Jupiter DAO. jupiter-mcp ships 17 Jupiter tools (swap, DCA, limit, lend); openseeker executes Jupiter swaps autonomously; and Coldstar signs them end-to-end.

jupiter-mcp · openseeker · JUP HAUS ↗

Squads Multisig · Custody

solana-multisig is a threshold multi-sig program; Coldstar's custody layer integrates Squads / Seeker Seed-Vault multisig with policy-governed, air-gapped signing — squarely the smart-account and custody problem space.

solana-multisig · coldstar ↗

Metaplex NFTs · Token metadata

My first Solana build was Metaplex Candy Machine v2 video-NFT minting at Launch House. Since: solana-nft-mint (Metaplex metadata + collections), cardinal-nft, and NFT-gating.

solana-nft-mint ↗

Phantom Wallets · Mobile

Dual-mode Solana Mobile wallets on MWA and the Seed Vault, a live Seeker dApp Store app, seekerchat, and openseeker — plus cold-signing UX. Wallet security and mobile signing are the core of the work.

seekerchat · openseeker ↗

Triton RPC · Indexing

solana-analytics-dashboard reads program analytics (tx history, success rates, compute, fees) off RPC; Helius-backed DAS indexing powers the SGT snapshot tooling and seekerchat; and the Solana MCP is an RPC tool layer.

solana-analytics-dashboard ↗

Any Solana team Agent × chain

The rare combination: a Rust/Anchor on-chain engineer (34 repos) who also builds the agent-to-chain tool layer and the custody that makes autonomous on-chain action safe. One person across both halves.

Programs & residencies.

Where the ecosystem let me in the room.

2021Solana Hacker House Resident — Launch HouseSolana Foundation × a16z Crypto · Beverly Hills · inaugural residency
2025Resident Developer — House of Ink, KrakenDenver · built an autonomous voice agent live during the residency
2025Developer Relations Engineer — ZetaChainCross-chain incl. Solana · only US developer relations hire, on a remote team of three
2026EasyA KickstartLaunch program for the $COLD token
2026Pitchathon — EasyA × Superteam IrelandColdstar

Let's build something on Solana.

Open to Solana-native engineering, DevRel, and agent-infrastructure roles. The fastest way to judge the work is to read the code.

Email me GitHub ↗ @expertvagabond ↗ Full portfolio ↗