The verdict for the WebMCP Challenge is out: 7,000 registered souls, roughly 2,500 submissions from over a hundred countries, all hammered together across ten caffeine-soaked days.
I don’t envy the judging panel. Staring at 2,500 competing agentic architectures is the sort of cognitive punishment usually reserved for low-level tech purgatory.
My entry, DealTable, did not place in the top ten. And genuinely? That is completely fine. It was feral, slightly unhinged to build, and I’m thoroughly glad it exists.
The Pitch for the Fast-Scrolling Class
DealTable is a negotiation clean-room for the coming agentic web.
You hand it a mandate: your target, your walkaway threshold, and precisely how far you’re prepared to bend before dignity gives up. A counterparty pushes back in the chat. ChatGPT sits in the corner, acting as your advisor by calling typed WebMCP tools directly on the live page—not by hallucinating UI elements or squinting at raw DOM trees like an exhausted temp at 3:00 AM.
The moment a deal crosses your walkaway line, Human-in-the-Loop trips the emergency brake. Everything worth dragging a counterparty into court over gets stamped into an audit trail.
I built it because the real dystopia lurking in our automated future isn’t a gleaming chrome skull crushing a ribcage; it’s an overly polite corporate agent cheerfully agreeing to contractual terms that quietly turn your mortgage into a multi-generational performance art piece.
I just wanted a room where the human still has a hand firmly on the shock collar.

The Gallery as a Free Masterclass
After the shutters came down, I went prowling through the project gallery. Some of the builds were legitimately intimidating: spatial editors, shared notebooks, medical viewers, and collaborative wedding seating charts where human and model stare down the same live artifact.
That is the high-water mark now.
Mandate taking the crown made absolute sense. They were playing in the exact same theoretical pool as DealTable—authority, boundaries, delegation, and who gets to touch what—but they took the mechanics a leap further. Instead of just slapping an apologetic “Click Approve to continue” prompt onto a static API list, the tool surface itself mutates dynamically as permissions are granted or stripped away. Authority expires, the tools evaporate.
That wasn’t just a win; it was an architectural lecture I sat in the front row for, taking furious notes.
My internal post-mortem was ruthlessly mundane:
- The Pitch Video: Too many Scots-accented ums, not enough surgical ruthlessness. Lead in lockstep: Problem → Mandate → Tool Call → Human-in-the-Loop → Closure.
- The Narrative: Lead with the visceral bleeding problem, not the plumbing. WebMCP is the pipeline; nobody falls in love with the pipe.
- The Execution: V1 ran a rule-based counterparty so I could focus entirely on the advisor bridge. Honest engineering, but in a hackathon arena, the theatre needs to be agent-native from lobby to exit door.

Five Winners I’d Actually Boot Up (And One I Suspect Solved a Judge’s Mortgage Dilemma)
Two thousand five hundred entries generate an extraordinary amount of speculative noise. These are the five that sliced clean through it.
1. MASIL — The One That Actually Matters
Reconnecting Korean elders to creative life.
An agent suggests classic calligraphy references and surfaces Janggi moves via WebMCP, but leaves the brushwork and the completion of the game entirely to the elder.
This is the project I’d back in a noisy pub debate. Not because it had the most complex stack, but because the human stakes are palpable. Elders isolated at home, their creative universe contracting to the size of a glowing piece of glass. The agent isn’t stepping in to replace human volition; it acts as an errand boy to fetch the pieces of a world they can no longer easily walk out to, handing them back as tools for their own craft.
That is WebMCP with a moral compass: typed tools, a shared page, and basic human dignity preserved intact. It makes you feel slightly guilty that your own entry was built around defending freelance day rates.
2. Roque Nights — Built by Someone Who Looks at the Sky
A stargazing planner from an engineer at the Gran Telescopio Canarias.
The agent crunches seeing conditions, isolates the darkest nights, figures out what’s actually worth observing, and slews the interactive sky map into alignment while you sit back and watch.
Unreservedly brilliant. Zero slide-deck jargon about “agentic paradigm synergy.” Just an engineer who genuinely cares about photons, an automated assistant doing the tedious atmospheric arithmetic, and a shared visual map both are looking at. If you’ve ever stood in a freezing field at midnight wondering if it was worth hauling 20 kilograms of glass out of the boot of your car, you immediately understand why this exists.
3. Observatory — Unfortunate Name, Impeccable Dungeon Energy
A procedural map-maker for tabletop designers and weary dungeon masters.
Type “a lonely crumbled watchtower in a choking swamp,” and the system doesn’t spit out a hallucinatory jpeg with six fingers. It generates structured, fully editable vector terrain, rooms, and labels through WebMCP.
If teenage me had been handed this, I’d have treated the monitor like a sacred religious relic. The beauty isn’t “the machine drew a landscape.” The triumph is that it created a manipulable environment that you and your gaming group can spend four hours arguing over. Rename it so it doesn’t sound like a venture-backed SaaS platform from 2013, and ship it.
4. Alza — The Antidote to Cynicism
A floor-plan editor that surrenders its tools directly to the model.
Feed it a single snapshot and one verified dimension; it traces walls, extracts spatial dimensions, and constructs a navigable 3D model you can stroll through in your browser.
This is the demo you pull out when a non-technical sceptic asks why everyone is screaming about agentic standards. It’s structure over pixels. The agent handles the tedious measurement math; the human remains the architect of the living space.
It has a grounded utility that makes DealTable feel like a late-night corporate philosophy seminar—which, let’s be honest, it essentially was.
5. ArchMorph — And the “Someone on the Jury is Renovating” Hypothesis
Fifty-seven distinct architectural tools, dynamic floor plans, and layout validation.
A staggering build. It’s also remarkably close in theme to Alza. When two distinct entries in a top-ten roster both revolve around floor plans, structural walkthroughs, and spatial clearances, one cannot help but suspect at least one member of the judging panel was mid-kitchen-extension and having an absolute nightmare with their contractor.
I’m not levelling accusations. I’m just saying if an investigative committee looked into it, I wouldn’t be surprised.
What Winning Actually Looked Like
The judges didn’t care about developers merely chanting “look, we registered seven API endpoints.”
They rewarded a single, shared artifact on screen—a celestial chart, a battle map, an architectural canvas, a digital calligraphy desk—and a division of labour where the machine acts as the grease and the human remains the spine.
DealTable v2 is already queued up on the local machine. The spine stays; the execution gets sharpened with the lessons pulled straight from the winners’ circle.
For the curious or the brave:
- The Living Artifact: dealtable-webmcp.vercel.app
- The Tape: Watch the demo walk-through on YouTube
- The Guts: github.com/shielyule/dealtable-webmcp
A massive tip of the hat to the WebMCP organisers (OpenAI and DevPost), the public builders, and my long-suffering collaborative stack that helped me figure out what needsHitl means in anger (including that brief, glorious window where DealTable accidentally attempted to negotiate commercial real estate at $undefined/sqft).
Huge congratulations to the winners—particularly Mandate. You set the bar.













