Demos

x401 in the wild.

Eight fictional brands, eight different proof requirements — each one served by a single URL that returns a real HTTP 401 with the x401 payload in the Proof-Required header. Open any of them to see the same page rendered for humans (HTML) and agents (machine-readable).

Build on x401Enable your business to accept agentic transactions. Connect with our team to learn more.
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401 · NAR member
/demos/abstract/register
AbstractRealty Research · Est. 2026
Reserve your seat
Vol. IV · No. 20 · Thu, May 21Briefing reservation · 47 min
Open demo

Attend an event that's just for realtors

Members-only briefing reservation gated on a verified NAR REALTOR® membership credential.

Association
401 · KYC required
/demos/karat/signup
KaratOpen an account
Step 1 of 1 · ≈ 90 secondsPassport, selfie, tax residency
Open demo

Open a new bank account

Account opening gated on a government-issued photo ID + liveness selfie. KYC + AML enforced inline.

Real identityKYCAML
401 · Travel rule
/demos/aether/verify
aetherSend 0.45 ETH
0.45 ETH · ≈ $1,056.65→ vitalik.eth · 0xd8dA…6045
Open demo

Send crypto across borders

Outgoing transfers over $1,000 to a new address gated on government ID for FATF Travel-Rule compliance.

Real identitySanction screeningTravel Rule
401 · Over 18
/demos/sideline/bet
SUMMITPrediction MarketsTap to place wager
DET -3.5 +110 · $25 → $52.50Lions vs 49ers · Sun, Dec 8 · SNF
Open demo

Confirm your age to place a bet

Wager gated on a predicate-only age proof — wallet replies “age ≥ 21” without disclosing DOB.

Age
401 · Personhood
/demos/pomelo/stay
pomeloBook your stay
Casa de Costa · 4 nights · €2,840Tulum · May 24 – 28 · 2 guests
Open demo

Book your vacation

Stay reservation gated on a identity verification and proof of personhoood — one human, a real booking, not a bot.

Real identity
401 · Driver's license
/demos/redbird/bind
Redbird InsuranceBuy this policy
2022 Honda Accord · $118/moAuto · full coverage · Columbus, OH
Open demo

Buy an auto insurance policy

Policy activation gated on a valid driver's license — a human uploads their license, an agent presents a verifiable mDL credential.

Real identityDriver's license
401 · Prescription
/demos/vela/fill
Vela PharmacyFill prescription
Atorvastatin 20 mg · $12 / 90 days90 tablets · ships free · Austin, TX
Open demo

Fill a prescription online

Dispensing gated on a valid prescription — a human uploads or e-sends the Rx, an agent presents a verifiable prescription credential.

Valid prescriptionLicensed prescriber
401 · Passport
/demos/meridian/checkout
Meridian AirBook your flight
JFK → CDG · 14 May · Business$3,840 · One way · 1 passenger
Open demo

Fly the Meridian

International checkout gated on a verifiable passport credential — selective disclosure, no PII overshare.

Real identity
Build on x401

Let’s build something

Every demo here runs on the same open protocol — a real HTTP 401 that any human or agent can satisfy with verifiable identity. When you’re ready to put it behind your own product, the team at Proof can help you design, integrate, and ship it.

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