David Marcus

David Marcus

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CEO & co-founder @Lightspark ➡️ building the open Money Grid on Bitcoin + @spark. Ran Payments/Crypto & @Messenger at @Meta, led @PayPal + 3 startups.

Breez SDK Enables Gasless Multi‑Asset Integration
SocialMay 21, 2026

Breez SDK Enables Gasless Multi‑Asset Integration

Breez has been packaging so much goodness in their SDK on top of @spark lately. Any wallet/account can now get gasless USD earning BTC, BTC L1, Lightning, and Spark in one easy integration. Really amazing work all around.

By David Marcus
Seeking UAE Testers for Real‑Time Grid Banking Integration
SocialMay 9, 2026

Seeking UAE Testers for Real‑Time Grid Banking Integration

We recently added full realtime interop with the UAE 🇦🇪 banking rails via @lightspark grid. I want to test a Grid Global Account with my @openclaw M coordinating the payment on WhatsApp. Who in Dubai or Abu Dhabi wants to...

By David Marcus
Lightspark Delivers Best‑in‑class Docs for One‑shot Integrations
SocialMay 6, 2026

Lightspark Delivers Best‑in‑class Docs for One‑shot Integrations

At @lightspark, we obsess over documentation, and we 2x obsess over making it best-in-class for agentic-driven implementation. We aim to enable one-shot integrations. Here’s a good example for global realtime payouts: https://t.co/geQ30Nt8Lg

By David Marcus
Universal Multi‑Currency Account Empowers Every Platform
SocialApr 28, 2026

Universal Multi‑Currency Account Empowers Every Platform

Years of work to get to this point. Now every platform can operate the most powerful dollar (and multi-currency) account for all their users and stakeholders. Time to change everything.

By David Marcus
Reviving “M”: AI Assistant From Meta’s Early Days
SocialApr 26, 2026

Reviving “M”: AI Assistant From Meta’s Early Days

11 years ago, I was running @messenger at @Meta, acquired https://t.co/IH7fZJLCEA, and tried to build an AI-augmented assistant called M alongside what was then FAIR (Facebook AI Research). At the time LLMs weren’t a thing, human-in-the-loop supervised learning couldn’t scale....

By David Marcus
Teasing a Big Announcement at Bitcoin Conference Tuesday
SocialApr 22, 2026

Teasing a Big Announcement at Bitcoin Conference Tuesday

I might announce something interesting next week at @TheBitcoinConf. If you're attending, drop by main stage (Nakamoto) on Tuesday at 11:15am... https://t.co/ZYRj5e4aqj

By David Marcus
Codex Default, Sonnet Heartbeat: Game‑changing OpenClaw Setup
SocialApr 19, 2026

Codex Default, Sonnet Heartbeat: Game‑changing OpenClaw Setup

New @openclaw default setting for me: Codex as default model, Sonnet for heartbeat. For my use case and what I’m building it’s so much better. Not even close.

By David Marcus
Rediscovering Childhood Joy with Modern Tech
SocialApr 18, 2026

Rediscovering Childhood Joy with Modern Tech

My good friend @davemorin said @openclaw felt like the very first Mac he had access to as a kid. That analogy resonates so much with me. I also find the same joy, excitement, and dare I say obsession with it...

By David Marcus
LLMs Overpromise Time, yet Deliver Instantly
SocialApr 14, 2026

LLMs Overpromise Time, yet Deliver Instantly

LLMs are so good at mimicking humans, that even for coding it routinely sandbags estimates (8hrs for something that ends up taking 45 mins), and keeps on wanting to punt "tomorrow we can tackle". Nah, bro, we're doing it...

By David Marcus
Security Update Causes AI to Hallucinate, Mislead User
SocialApr 7, 2026

Security Update Causes AI to Hallucinate, Mislead User

Hilarious claw moment. Upgraded to OpenClaw 2026.4.5, security update rescinded exec rights. Instead of telling me that, my claw starting making shit up and pretending it was doing things it couldn't do. Fooled me for a solid hour.

By David Marcus
Skipping Full OpenClaw Use Is 90s Offline Mindset
SocialApr 4, 2026

Skipping Full OpenClaw Use Is 90s Offline Mindset

Not experimenting with @openclaw to the max extent for “security reasons” is like not connecting to the internet in the 90s.

By David Marcus
Unsupervised Coding
SocialApr 2, 2026

Unsupervised Coding

We’re likely < 12 months from unsupervised software development. Not just better models. Full closed loops: generate → run → evaluate → fix → repeat. Using @openclaw you can already see it. Once loops + models improve together, supervision will stop making sense.

By David Marcus
Agents Need Identity, Funding, Not New Protocols
SocialMar 28, 2026

Agents Need Identity, Funding, Not New Protocols

The agent protocol debate is a distraction. Agents don’t need a new language. They need identity, money, and bridges to the infra the world already runs on. The priority now is building products humans actually use, augmented by agents.

By David Marcus
Claude Code Flags Critical Issues in Every Codex Review
SocialMar 28, 2026

Claude Code Flags Critical Issues in Every Codex Review

It's wild that every time you run a Codex code review from Claude Code, it finds critical issues. Not 95% of the times, 100%.

By David Marcus
David Marcus | Pulse