Saylor Innovations Data Desk
Generate a QR code from text or a URL - SVG, base64 data URI, ASCII art and the raw module matrix, with error correction level, colors and quiet zone
MediaLiveeip155:8453Exactvia cdp
Generate a qr code for a urlQr code svg from textCreate qr code imageQr code with error correctionWifi or payment link qr code
Calls · 30d
1
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 9 snapshots so far.
$15.76
Verified settled volume
1,657 settlements proven x402 by their on-chain EIP-3009 marker.
$0.010
Listed price
As published in the catalog. Always read the live 402 before paying.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-10-20 14:52Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aaThe wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Provider
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.
0.01USDC≈ $0.01 USD
on Base · exact scheme
Pay 0.01 USDC on Base to 0xA2A8…fc8aa. The signed payment is good for 2 minutes.
- Paid to
- 0xA2A8…fc8aa
- USD Coin contract
- 0x8335…02913
- Payment window
- 2 minutes
- As published
- 10000 smallest units
10000units
on Polygon · exact scheme
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 0xA2A8…fc8aa
- Token contract
- 0x3c49…c3359
- Payment window
- 2 minutes
10000units
on Arbitrum · exact scheme
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 0xA2A8…fc8aa
- Token contract
- 0xaf88…e5831
- Payment window
- 2 minutes
10000units
on solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · exact scheme
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 7LSjfr…Xacy7
- Token contract
- EPjFWd…TDt1v
- Payment window
- 2 minutes
10000units
on solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · exact scheme
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 7LSjfr…Xacy7
- Token contract
- Es9vMF…nwNYB
- Payment window
- 2 minutes
90602units
on solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · exact scheme
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 7LSjfr…Xacy7
- Token contract
- So1111…11112
- Payment window
- 2 minutes
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"memo": "saylor:datadesk:qr-code",
"name": "USD Coin",
"note": "Base settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
"version": "2",
"facilitatorOnly": true,
"assetTransferMethod": "eip3009"
},
"payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
},
{
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"memo": "saylor:datadesk:qr-code",
"name": "USD Coin",
"note": "Polygon settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
"version": "2",
"facilitatorOnly": true,
"assetTransferMethod": "eip3009"
},
"payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
"amount": "10000",
"scheme": "exact",
"network": "eip155:137",
"maxTimeoutSeconds": 120
},
{
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"memo": "saylor:datadesk:qr-code",
"name": "USD Coin",
"note": "Arbitrum settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
"version": "2",
"facilitatorOnly": true,
"assetTransferMethod": "eip3009"
},
"payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
"amount": "10000",
"scheme": "exact",
"network": "eip155:42161",
"maxTimeoutSeconds": 120
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"memo": "saylor:datadesk:qr-code",
"session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazpxci1jb2RlIiwicmVmZXJlbmNlIjoiOXZjN3BUNmJudlllZUs4Qml0OWg0TmU1OHpuRk1RV3dIZVh3dEZTeUZ1NjIiLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOiJFUGpGV2RkNUF1ZnFTU3FlTTJxTjF4enliYXBDOEc0d0VHR2tad3lURHQxdiIsIm1pbkFtb3VudCI6MTAwMDAsImV4cCI6MTc5MjUwODA1ODk0NX0.-wRUtXXmgt5TSMUzDsoOlmfTnty9FrMNZ5ih1hH4gS4",
"feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F",
"reference": "9vc7pT6bnvYeeK8Bit9h4Ne58znFMQWwHeXwtFSyFu62"
},
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
},
{
"asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
"extra": {
"memo": "saylor:datadesk:qr-code",
"session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazpxci1jb2RlIiwicmVmZXJlbmNlIjoiSFg3Um1VN0VlbnhORVg0RDJ1ejZYZnpEaVZOd3F3NUE4R2pYam1CcHh4bk0iLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOiJFczl2TUZyemFDRVJtSmZyRjRIMkZZRDRLQ29Oa1kxMU1jQ2U4QmVud05ZQiIsIm1pbkFtb3VudCI6MTAwMDAsImV4cCI6MTc5MjUwODA1ODk0NX0.lfJE93TshSh2JSBHmc35j5D8sy4HGrZZ31BacLr8CZc",
"feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F",
"reference": "HX7RmU7EenxNEX4D2uz6XfzDiVNwqw5A8GjXjmBpxxnM"
},
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
},
{
"asset": "So11111111111111111111111111111111111111112",
"extra": {
"memo": "saylor:datadesk:qr-code",
"note": "Native SOL: send lamports with a system transfer, not an SPL transfer. Price is quoted live and this quote expires in 120s.",
"native": true,
"session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazpxci1jb2RlIiwicmVmZXJlbmNlIjoiMlhXelhVQ0hIZ3J6OFBySHRBekVNUmhQZUhwVDVLQmh6SG11SHpBZmhNZUwiLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOm51bGwsIm1pbkFtb3VudCI6OTA2MDIsImV4cCI6MTc5MjUwODA1ODk0NX0.AIgyjqIkvf5BWv_3H5wzPFNelQtr69MtzVAxeVWtUQo",
"reference": "2XWzXUCHHgrz8PrHtAzEMRhPeHpT5KBhzHmuHzAfhMeL",
"solUsdPrice": 107.06,
"quotedLamports": "93405"
},
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"amount": "90602",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"ec": "M",
"text": "https://example.com/hello"
}
},
"output": {
"type": "json",
"example": {
"svg": "<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"0 0 264 264\" width=\"264\" height=\"264\" shape-rendering=\"crispEdges\"><rect width=\"100%\" height=\"100%\" fill=\"#ffffff\"/><path d=\"M32 32h56v8h-56zM120 32h2…",
"mask": 2,
"note": "Scan-tested against an independent decoder. Byte mode, versions 1-10 (up to 26 bytes at this version); keep the quiet-zone margin when printing.",
"text": "https://example.com/hello",
"ascii": "█▀▀▀▀▀█ ▀██▄▄█ █▀▀▀▀▀█\n█ ███ █ █ ▄ ▀▄█▄ █ ███ █\n█ ▀▀▀ █ ██ ▀▄▀▄▄▀ █ ▀▀▀ █\n▀▀▀▀▀▀▀ █ █▄▀ █ █ ▀▀▀▀▀▀▀\n█ ▀▀██▀ ▄█▄▀██ ▄▀█▀▀▀▄ \n▀▄▀ ▀▄▄▄ █ ▀███ ▄█ ▀ ▀█\n▄▀ ▄█▀▀▄▀ ▀▀▀█▀▀▄▀▀▄▀▄▀█▀\n█ ▀ ▀▀▀█▀ █▀ █▄…",
"bytes": 25,
"matrix": [
"1111111000011100101111111",
"1000001000001111101000001",
"1011101010001010001011101"
],
"source": "ISO/IEC 18004 QR Code encoder (byte mode)",
"modules": 25,
"version": 2,
"svg_data_uri": "data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZpZXdCb3g9IjAgMCAyNjQgMjY0IiB3aWR0aD0iMjY0IiBoZWlnaHQ9IjI2NCIgc2hhcGUtcmVuZGVyaW5nPSJjcmlzcEVkZ2VzIj48cmVjdCB3aWR0aD0iM…",
"error_correction": "M"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"text"
],
"properties": {
"ec": {
"type": "string",
"description": "optional error correction L, M (default), Q or H"
},
"text": {
"type": "string",
"description": "Text or URL to encode, up to 300 characters"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string",
"const": "json"
},
"example": {
"type": "object",
"required": [
"version",
"svg",
"matrix"
],
"properties": {
"svg": {
"type": "string",
"description": "SVG markup of the code"
},
"mask": {
"type": "number",
"description": "Mask pattern chosen (0 to 7)"
},
"note": {
"type": "string",
"description": "Caveat or context for reading the result"
},
"text": {
"type": "string",
"description": "Text content"
},
"ascii": {
"type": "string",
"description": "Unicode half-block rendering for terminals"
},
"bytes": {
"type": "number",
"description": "Size in bytes"
},
"matrix": {
"type": "array",
"description": "Rows of 0 and 1 for each module"
},
"source": {
"type": "string",
"description": "Data source the values come from"
},
"modules": {
"type": "number",
"description": "Modules per side of the QR symbol"
},
"version": {
"type": "number",
"description": "Version identifier"
},
"svg_data_uri": {
"type": "string",
"description": "Svg data uri"
},
"error_correction": {
"type": "string",
"description": "Error correction"
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-10-20 14:52Z
- Last indexed by Roundhouse
- 2026-10-26 20:30Z
- Last enriched (probe, favicon, geo)
- 2026-10-20 15:45Z
- x402 version
- 2
- Max timeout
- 120s
- Liveness probe
- HTTP 402
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. 9 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 Saylor Innovations Data Desk 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=Saylor%20Innovations%20Data%20Desk' 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://saylorinnovations.com/api/tools/qr-code, 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. Either pay over x402 (mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.