Rio de Janeiro · Senior Product Marketer · Marketing for 15 years, building for the last 5
I'm Gabriel, aka Gabe. Fifteen years in product marketing, and for the last five I've been building too, mostly applied AI. Agent plumbing is where I spend most of my week.
I spot each team's gaps and bring systems to help them work better and faster. TL;DR & more deets here in this video.
| Project | Stack | What it does |
|---|---|---|
Tixmancer private · main focus |
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Event tickets bought by an agent end to end: HTTP 402 offer, signed QR ticket, one-time check-in, onchain receipt recovery on Base. 50 test files across unit, integration, contract, and browser e2e; Base Batches 004 application in. |
Maria private · milestone 1 |
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The scam-checker Brazilian elders talk to on WhatsApp: forward anything suspicious, hear a voice verdict in PT-BR, family alerted when it matters. Building it for RevenueCat's Shipaton 2026. |
| Project | Stack | What it does |
|---|---|---|
| scaleflow-leads ⭐ |  |
A whole outbound lead pipeline, built in 48 hours for a trial task. Two scrapers I wrote myself (Crunchbase behind a login, Clutch), Clay enrichment driven through MCP, and 100 leads with every email checked against a live DNS MX record. Measuring the first scrape is what changed the build: 74% of the 300 Crunchbase companies had raised more than $20M against a $20M ceiling, so Clutch became the primary source. Also runs as an MCP server, with an agent that stops for human approval before any lead is marked qualified. 42 tests. Two-minute walkthrough. |
| Project | Lang | What it does |
|---|---|---|
| hedwig-sol ⭐ | |
Composable onchain roles for Solana. Grant roles, not keys. One canonical role store other Anchor programs share instead of rebuilding access control. 6 instructions, 21 LiteSVM integration tests, a documented threat model. Built on a Solana Foundation grant. |
| worldcup-pari-market ⭐ | |
Proof-settled World Cup prediction markets on Solana, using TxODDS validate_stat CPI and Merkle-anchored results. Live on devnet, 39 Rust tests. Demo. |
| kageb ⭐ | |
Private intent pooling for Solana: four real orders in, one aggregate trade out. |
| grimoire | |
Grimoire, the Solana Transaction Doctor. Paste a failed transaction signature and it decodes the failure (Anchor errors, custom program codes, compute budget, rent, PDA collisions) into a plain-English root cause and a concrete fix. Live demo + open source. |
| solana-ship-gate |  |
Auditor-grade pre-deploy safety gate for Solana programs: 4 deterministic checks, machine-readable PASS/FAIL, blocks unsafe mainnet deploys/upgrades via a PreToolUse hook. A Solana AI Kit skill. MIT. |
| patronus | |
Onchain-attested, runtime-scoped credentials for AI agents on Solana DeFi. |
| worldcup-settlement | |
An AI agent that bets on live World Cup matches on Solana, autonomously. |
| meteora-jup-sol-safety-monitor |  |
Read-only Meteora DLMM PnL and safety monitor with Telegram alerts. |
| solguard | |
Warns Solana users before they get rugged. Scores new pump.fun launches on deployer history, liquidity and mint authority, then posts the risk live. |
| superteam-academy | |
Open-source gamified learning for Solana devs, built for Superteam Brazil. Browser code editor, XP, leaderboards and onchain certificates. |
| Project | Lang | What it does |
|---|---|---|
| silvia | |
A confirmation-first food-ordering assistant for older adults, built on Base44. Chat instead of learning an app; 50+ users completed an order. |
| safeskill | |
One-click security audit for your MCP setup. One score, plain English, no CLI knowledge required. |
| wingman | |
AI Expert Marketplace. Install experts (Design, Code, Marketing) into Claude Code. |
| clawmanship | |
Reviewable decision before a community skill enters a local bundle. |
| agenthub | |
Monad-native AI agent orchestration platform. |
| hermes-aria-theme |  |
Minimalist black and white dashboard theme for the Hermes agent. Green for success, red for errors, nothing else. Greek-inspired, with the Omega on every session card. |
| Project | Lang | What it does |
|---|---|---|
| walletbrief-monad | |
Persistent Monad wallet briefs with human-approved, revoke-only EIP-7702 execution. |
| yieldpilot | |
Your AI copilot for cross-chain yield optimization. Built for the Chainlink Convergence Hackathon 2026. |
| Project | Lang | What it does |
|---|---|---|
| beat-claude-engineer-004-analytics-pipeline | |
Real-time analytics pipeline design for the Beat Claude engineer-004 challenge: fixture anomaly detector, test suite, hot-path benchmark, and doc/evidence consistency checks. |
| ecommerce-sales-analysis | |
E-commerce sales analysis with Python (pandas, matplotlib) and SQL. RFM segmentation, revenue trends, product performance. |
| solana-narrative-tracker | |
Spots emerging Solana narratives early. Reads 20+ KOLs, 20+ repos and 25+ protocol TVLs, clusters the signals, and ships build ideas every fortnight. |
| defillama-tvl-anomaly-detector | |
Scans DeFi protocols for TVL that looks wrong. Zeroed, dropped 50% in a day, spiked 300%, or flat for 60 days. Catches broken adapters, exploits and depegs. |
Also: atelier-gabriel-paz. A landing page I built for my friend Gabriel Paz, a painter in Botafogo, Rio. He had no website, so I made him one. Hand-written HTML, no build step.
Off GitHub: a six-agent system runs my daily marketing operations, research, drafts, review, planning, with a human sign-off at every step. 27 of 30 content cycles held above my quality threshold, and the daily brief hit 97% accuracy across 31 traced runs.
A high-severity find in Anchor's LazyAccount code, v0.31.0 to v0.32.1: Lazy::size_of on [T; N] measured the first element and multiplied by N, so for arrays of unsized types every field after the array loaded from the wrong byte offset and exit() wrote it back corrupted. My writeup, PoC and proposed fix. Upstream landed the same iterate-per-element fix five weeks later. Bounty paid. Also the Solana Vault Standard Extension, built for a Superteam Brazil bounty: 4,398 lines of code across 34 instructions. The SVS-7 submission was the reviewer's pick of its round before losing to a full-stack entry.
Note
A second finding, a fund-lockup path in Ern Protocol, was approved and paid through Immunefi. Other reports are still under review. I don't publish details of an open or rejected report; program terms exist for a reason.
- 91.9% of active allocators (260 wallets) migrated V1 to V2 at Octant, on zero paid spend.
- 13K followers and 9M organic impressions in 9 months on @octantapp.
- Ran 100+ onboarding experiments at noder. as its only product marketer.
I write about proof, evals, and AI-assisted marketing at gabeonchain.com.
- Marketing has a proof problem
- How I stopped winging it on evals
- Keep the judgment, cut the slop
- The fence is the job
gabeonchain.com · X @gabe_onchain · LinkedIn