UUmbra Pay

Interactive

Demo center
Simulations run entirely in the browser (no wallet, no RPC). For the live flow, create an intent on the home page, then use /pay/<id> and /api/resources/<id> as documented on How it works. More scenarios: Platform sim.
DemoDemo centerSimulated retail + agent 402 — no wallet or RPC here.?Two stacked stories: build a cart and mint links, then the headless 402 → Umbra → 200 path. All in-browser.Live create →

Part 1 · PC store

VECTOR SILICON

Add parts, checkout mints human + agent URLs for the same build. Run automatic simulation walks human cart then agent pay back-to-back.

?Fictional SKUs and host. Automatic mode walks a human cart, issues links, then replays an agent paying the same intent — all in-browser, no RPC.
GPU

Nebula RTX 5070 Twin

12GB GDDR7 · PCIe 5.0 · 220W

14 in stock

$599.00
GPU

Pulse RX 9060 XT

16GB · RDNA 4 · dual fan

31 in stock

$379.00
RAM

Volt DDR5-6000 Kit

32GB (2×16) · CL30 · XMP

Restock weekly

$119.00
RAM

Aegis DDR5-5600 Kit

64GB (2×32) · ECC-ready

8 in stock

$229.00
SSD

BlackSnake NVMe Gen4

2TB · 7300 MB/s read

High turnover

$159.00
HDD

IronVault CMR 8TB

3.5" · 7200 RPM · NAS rated

22 in stock

$189.00
CPU

Ryzen 9 9900X

12C/24T · 4.4GHz · AM5

6 in stock

$449.00
PSU

ForgeGold 850W

ATX 3.1 · 80+ Gold · modular

40+ in stock

$139.00
Case

MeshForge 500 Air

Mid-tower · TG panel · 3×140

17 in stock

$99.00

Protocol · VECTOR SILICON · in-browser only

Example intent

Agent: 402 → Umbra → 200

?Uses the same build_… id and USDC total as the Human / Agent URLs in the cart rail after you click Generate checkout links — or the default three-line build before that.

Mock JSON mirrors this repo's /api/resources/:id shape. Resource and pay URLs always match vector-silicon.demo and the active intent id.

Resource

GET https://vector-silicon.demo/api/resources/build_vs9c2a8f1e704

Human pay (same intent)

https://vector-silicon.demo/pay/build_vs9c2a8f1e704
GET 402 + parse Umbra + confirm 200

Activity log

Press “Run simulation” — or generate checkout links above to bind this block to that intent.

Response body (mock)

{
  "x402Version": 1,
  "error": "Payment required — settle with Umbra per extra (not a raw SPL transfer).",
  "accepts": [
    {
      "scheme": "exact",
      "network": "solana-mainnet",
      "maxAmountRequired": "877000000",
      "maxTimeoutSeconds": 600,
      "resource": "https://vector-silicon.demo/api/resources/build_vs9c2a8f1e704",
      "description": "VECTOR SILICON · PC build — Nebula RTX 5070 Twin · Volt DDR5-6000 32GB kit · BlackSnake NVMe Gen4 2TB ($877.00 USDC)",
      "payTo": "VECTOR_SILICON_MERCHANT_TRUNC",
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "mimeType": "application/json",
      "outputSchema": null,
      "extra": {
        "name": "USDC",
        "settlement": "umbra-receiver-claimable-utxo",
        "intentId": "build_vs9c2a8f1e704",
        "amountAtomic": "877000000",
        "mint": "EPjF…Td1v",
        "humanPayUrl": "https://vector-silicon.demo/pay/build_vs9c2a8f1e704",
        "confirmUrl": "https://vector-silicon.demo/api/intents/build_vs9c2a8f1e704/confirm",
        "cartSummary": "Nebula RTX 5070 Twin · Volt DDR5-6000 32GB kit · BlackSnake NVMe Gen4 2TB",
        "buildManifestPreview": "sha256:bom_vs9c2a…"
      }
    }
  ]
}

Further detail: How it works · Agents & APIs · Reference · Platform sim.