backend grok-cli (SuperGrok Heavy sub, $0 marginal) · window last 24h
Sources checked: Encode (Arc live), DoraHacks listing + detail pages, Akindo (0G Wave), ETHGlobal (no new online hackathons), Devpost (JS-light; cross-checked via HackList + web), major-lab web/X, last-24h X.
Tracked re-verify (no changes → not in DEADLINES_JSON): SigNoz 07-26 · Casper finals 07-26 · OKX.AI Genesis 07-27 · WEEX AI Wars II 07-31 · C:>DIR concept notes 07-31 · WTF!! iExec 08-01 · Agentic Commerce (Prava) ends 08-02 · HackerRank Orchestrate ~08-02 (24h from Aug 1 18:00 IST) · Celo Aug 3 09:00 GMT · AMD 08-06.
Skipped as known / closed / non-dev: OpenAI Build Week (ends Jul 21 PDT), Stellar APAC (finals only; submit closed Jul 15), trading comps, Victoria social-mining.
Ranked (new / material deadline change) — max 10
Higgsfield Apps Contest — submit 2026-07-22 (winners Jul 29) — $100k (1st $25k) — remote — Claude + Higgsfield MCP one-click apps; huge pool, same-day deadline — higgsfield.ai/supercomputer/apps · x.com/higgsfield/status/2074878806838362265
Future Caribbean Global Agentic AI Buildathon — apply by 2026-07-24; sprint ~Jul 27–Aug 16 (demos/judging Aug 16) — $70k+ (cash + OWC systems; top $15k/$10k/…) — remote global — agentic AI, H200 for 40 teams, NYSE pitch; heavy apply form — futurecaribbean.com/about · futurecaribbean.com/apply
Victoria VR AI Builder Hackathon 2026 — reg to 2026-09-08; build Sep 11–Nov 11; submit 2026-11-11 — €20k — remote — browser-native AI/3D worlds; long lead-time — victoriavr.com/news/ai-builder-hackathon-2026-build-the-futu
Push to Prod: Building at the Frontier (Anthropic × Elevation Capital) — event 2026-08-08 (applications open on Devfolio) — $10k — in-person Bengaluru (Basecamp BLR) — major-lab Claude-required; India travel, not remote — pushtoprod-india.devfolio.co/overview
Telegraph Hackathon Season I (H1) — 2026-08-17 → 2026-09-07 (reg open now) — $5k USDC H1 ($15k series) — remote — wrap APIs/miners for agent-verifiable signals on Base-stack protocol — hackathon.telegraphprotocol.com/
DATE CONFLICT: Arc Programmable Money (Encode × Circle) — Encode: final submit 2026-08-09 (reg closes Aug 8; Demo Day Aug 20); Arc House banner: event window through 2026-08-22 — prize = accelerator seats (not cash listed) — remote — DeFi + agentic USDC on Arc; use earlier submit date — encodeclub.com/programmes/arc-hackathon
Archestra Apps Hackathon — build 2026-07-22 → 07-29; submit by Jul 29 — $2,250 — remote — describe MCP-connected apps in chat; solo OK — archestra.ai/apps-hackathon
0G Bridge Buildathon — Wave 2 (Akindo) — Wave 2 closes
2026-07-24 (org X Jul 21: “3 days”); full program multi-wave — up to **$50k 0G credits** (Wave 2: $7.5k credits) — remote AI×web3 L1 — progress-scored credits, not cash — app.akindo.io/wave-hacks/Z4MlX4vreI72ol6pd · x.com/akindo_io/status/2079377968732966930