Busker QR Generator
Generate a QR code from text as PNG (base64) or SVG. Custom module size, quiet-zone margin, and hex colours. Deterministic, capacity-capped at 2953 bytes. Set delivery to "url" to receive a short-lived download link instead of inline data.
The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.
Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
Pay 0.005 USDC on Base to 0x1545…A18c4. The signed payment is good for 5 minutes.
- Paid to
- 0x1545…A18c4
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 5000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x15459498e1191d8787c83177809bd54022fA18c4",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"dark": "#000000",
"text": "https://example.com",
"light": "#ffffff",
"scale": 4,
"format": "png",
"margin": 2
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"body": {
"svg": "string (svg, inline delivery) | absent",
"url": "string (url delivery) — expiring download link",
"meta": {
"scale": "number",
"margin": "number",
"pixels": "number",
"modules": "number",
"inputBytes": "number"
},
"format": "string",
"expiresAt": "string (url delivery)",
"dataBase64": "string (png, inline delivery) | absent",
"downloadsRemaining": "number (url delivery)"
},
"example": {
"meta": {
"dark": "#000000",
"light": "#ffffff",
"scale": 4,
"margin": 2,
"pixels": 116,
"modules": 25,
"inputBytes": 23,
"outputBytes": 412,
"errorCorrection": "M"
},
"format": "png",
"dataBase64": "iVBORw0KGgoAAAANSUhEUgAA…"
},
"bodyType": "json"
}
},
"schema": {
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"text"
],
"properties": {
"dark": {
"type": "string",
"description": "Hex colour of the data modules (default #000000)."
},
"text": {
"type": "string",
"description": "Content to encode (max 2953 bytes utf8 — QR capacity)."
},
"light": {
"type": "string",
"description": "Hex colour of the background (default #ffffff)."
},
"scale": {
"type": "number",
"description": "Pixels per QR module, PNG only (1-20, default 4)."
},
"format": {
"enum": [
"png",
"svg"
],
"type": "string",
"description": "Output format (default png)."
},
"margin": {
"type": "number",
"description": "Quiet-zone width in modules (0-16, default 2)."
},
"delivery": {
"enum": [
"inline",
"url"
],
"type": "string",
"description": "inline (default) = data in the response body; url = a short-lived download link (expires after ~15 min or a small download budget) — hand it to a user or client script instead of carrying the bytes."
},
"downloads": {
"type": "number",
"description": "url delivery only: download budget before the link dies (1-3, default 2)."
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json"
],
"type": "string"
}
},
"additionalProperties": false
}
}
},
"routeTemplate": "/qr"
}
}Provenance
- Seen in the source catalog
- 2026-08-30 15:21Z
- Last indexed by Roundhouse
- 2026-09-25 03:10Z
- Last enriched (probe, favicon, geo)
- 2026-09-12 19:45Z
- x402 version
- 2
- Max timeout
- 300s
- Liveness probe
- HTTP 405
Hand this page to an agent
Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.
GET api.roundhouseai.io/v0/endpoints
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 29 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service Busker QR Generator and tell me whether it is worth paying: what a call costs, whether the endpoint answered when last probed, and what its payment record actually shows. curl -s 'https://api.roundhouseai.io/v0/endpoints?q=Busker%20QR%20Generator' curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>' Then call it: read the price from the live 402 at https://workbot1.oddsys.org/qr, never from a cached figure, and pay with an x402 client. The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except /v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402, or use an organization key from https://roundhouseai.io/dashboard/team. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.