saylorinnovations.com
Unit conversion (length, mass, volume, area, speed, time, data, energy, pressure, temperature) — Real-world Data
DataLiveeip155:8453Exactvia cdp
UtilityConvert
Activity
—
Nothing indexed for this service or its provider yet. Not a claim that it is unused — only that we hold no record.
—
Verified settled volume
0 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0010
Listed price
As published in the catalog. Always read the live 402 before paying.
3
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-09-24 21:17Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xf8A376eBF123D7252cd7b66bcD77A727a4def22fThe 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.
Live 402 challenge
Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.
{
"error": "Payment required to access this resource.",
"accepts": [
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"memo": "saylor:util:convert",
"session": "eyJhcnRpY2xlSWQiOiJ1dGlsOmNvbnZlcnQiLCJyZWZlcmVuY2UiOiJIY2VMOURaWHNuVzNzVXhBZnBqenFtdHBFckZTRlBBS3Z6ajRoaGpEN0NOZiIsInJlY2lwaWVudCI6IjdMU2pmckpmOGZOc0I4VkE5dTdOM1dFbjI1c21RTHBvYjNTdnlVdlhhY3k3IiwibWludCI6IkVQakZXZGQ1QXVmcVNTcWVNMnFOMXh6eWJhcEM4RzR3RUdHa1p3eVREdDF2IiwibWluQW1vdW50IjoxMDAwLCJleHAiOjE3OTAyODgyMzY2MTJ9.FtFc8RmqDPVvttLSmO7KBlCAdq1um8ax5NK2VHOrfjQ",
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88",
"reference": "HceL9DZXsnW3sUxAfpjzqmtpErFSFPAKvzj4hhjD7CNf"
},
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"amount": "1000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
},
{
"asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
"extra": {
"memo": "saylor:util:convert",
"session": "eyJhcnRpY2xlSWQiOiJ1dGlsOmNvbnZlcnQiLCJyZWZlcmVuY2UiOiJHeEVNN3Q3R1oyNlh6RkJ4eTNteTRSN2Vud0tkcE43THcyekhjbkZWYkxXUiIsInJlY2lwaWVudCI6IjdMU2pmckpmOGZOc0I4VkE5dTdOM1dFbjI1c21RTHBvYjNTdnlVdlhhY3k3IiwibWludCI6IkVzOXZNRnJ6YUNFUm1KZnJGNEgyRllENEtDb05rWTExTWNDZThCZW53TllCIiwibWluQW1vdW50IjoxMDAwLCJleHAiOjE3OTAyODgyMzY2MTJ9.lSCtA3H3haDPEFViSul9UuGa9leCKX8GhQKTCygQKL8",
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88",
"reference": "GxEM7t7GZ26XzFBxy3my4R7enwKdpN7Lw2zHcnFVbLWR"
},
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"amount": "1000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
},
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"memo": "saylor:util:convert",
"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": "0xf8A376eBF123D7252cd7b66bcD77A727a4def22f",
"amount": "1000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
},
{
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"memo": "saylor:util:convert",
"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": "0xf8A376eBF123D7252cd7b66bcD77A727a4def22f",
"amount": "1000",
"scheme": "exact",
"network": "eip155:137",
"maxTimeoutSeconds": 120
},
{
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"memo": "saylor:util:convert",
"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": "0xf8A376eBF123D7252cd7b66bcD77A727a4def22f",
"amount": "1000",
"scheme": "exact",
"network": "eip155:42161",
"maxTimeoutSeconds": 120
},
{
"asset": "So11111111111111111111111111111111111111112",
"extra": {
"memo": "saylor:util:convert",
"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": "eyJhcnRpY2xlSWQiOiJ1dGlsOmNvbnZlcnQiLCJyZWZlcmVuY2UiOiJCcHRoU2lVM0JzQnZhZXdLREtCcldCNWVWSDlyUzE4cWNQcGFBOUZQaHAxdiIsInJlY2lwaWVudCI6IjdMU2pmckpmOGZOc0I4VkE5dTdOM1dFbjI1c21RTHBvYjNTdnlVdlhhY3k3IiwibWludCI6bnVsbCwibWluQW1vdW50Ijo4MzE5LCJleHAiOjE3OTAyODgyMzY2MTJ9.IOYTNNB5U1SH_QpG8dV_ZKmPJ5A4ZL6PzAgBoEoUPiY",
"reference": "BpthSiU3BsBvaewKDKBrWB5eVH9rS18qcPpaA9FPhp1v",
"solUsdPrice": 116.58,
"quotedLamports": "8577"
},
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"amount": "8319",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
}
],
"resource": {
"url": "https://saylorinnovations.com/api/util/convert?value=10&from=mi&to=km",
"tags": [
"utility",
"convert"
],
"iconUrl": "https://saylorinnovations.com/og-image.jpg",
"mimeType": "application/json",
"description": "Unit conversion (length, mass, volume, area, speed, time, data, energy, pressure, temperature) — Real-world Data",
"serviceName": "Saylor Innovations Real-World Utilities"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"to": "km",
"from": "mi",
"value": "10"
}
},
"output": {
"type": "json",
"example": {
"to": "km",
"from": "mi",
"value": 10,
"result": 16.09344,
"formula": "1 mi = 1.609344 km",
"category": "length"
}
}
},
"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",
"POST",
"PUT",
"PATCH",
"DELETE",
"HEAD"
],
"type": "string"
},
"queryParams": {
"type": "object",
"properties": {
"to": {
"type": "string",
"description": "unit of the same kind (query)"
},
"from": {
"type": "string",
"description": "unit, e.g. mi, kg, F, GiB (query)"
},
"value": {
"type": "string",
"description": "number (query)"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string",
"const": "json"
},
"example": {
"type": "object",
"required": [
"result"
],
"properties": {
"to": {
"type": "string"
},
"from": {
"type": "string"
},
"value": {
"type": [
"number",
"null"
]
},
"result": {
"type": [
"number",
"null"
]
},
"category": {
"type": "string"
}
}
}
}
}
}
}
},
"method": "GET",
"example": {
"to": "km",
"from": "mi",
"value": 10,
"result": 16.09344,
"formula": "1 mi = 1.609344 km",
"category": "length"
},
"license": "LicenseRef-Saylor-Agent-Use-1.0",
"mimeType": "application/json",
"freshness": "live",
"freeSample": "https://saylorinnovations.com/api/util/sample/convert",
"tokenCount": null,
"inputSchema": {
"to": "unit of the same kind (query)",
"from": "unit, e.g. mi, kg, F, GiB (query)",
"value": "number (query)"
},
"serviceName": "Saylor Innovations Real-World Utilities",
"instructions": "STANDARD PATH (works with stock x402 clients): send payload.transaction — a base64 partially-signed Solana transaction — and we route verify/settle through an x402 facilitator that sponsors the fee and submits it. Include the chosen accepts entry as \"accepted\" so we can match terms. ALTERNATIVE PATH (no facilitator): Pick ONE entry from accepts and use the reference and session from THAT entry — each asset has its own. USDC or USDT: send an SPL transfer of the exact amount. Native SOL (asset=So11111111111111111111111111111111111111112, extra.native=true): send that many lamports with a system transfer. Either way include extra.reference as a read-only account (Solana Pay style), then retry with PAYMENT-SIGNATURE: base64({x402Version:2, payload:{session, reference}}). If your client cannot attach a reference, send payload.signature instead (USDC only). SOL amounts are quoted live and expire in 120s; stablecoins do not move. The facilitator path verifies and settles in this request. Only the alternative self-submitted Solana path needs retries while the transfer is indexed (typically 3-4 attempts over 10-20s). On that path, a 402 saying \"payment not found on-chain yet\" means keep retrying.",
"outputSchema": {
"type": "object",
"required": [
"result"
],
"properties": {
"to": {
"type": "string"
},
"from": {
"type": "string"
},
"value": {
"type": [
"number",
"null"
]
},
"result": {
"type": [
"number",
"null"
]
},
"category": {
"type": "string"
}
}
},
"settlementModes": [
"facilitator-transaction",
"self-submitted-reference"
],
"typicalLatencyMs": 400
},
"x402Version": 2
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
1000units
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
1000units
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
0.001USDC≈ $0.001 USD
on Base · exact scheme
Pay 0.001 USDC on Base to 0xf8A3…ef22f. The signed payment is good for 2 minutes.
- Paid to
- 0xf8A3…ef22f
- USD Coin contract
- 0x8335…02913
- Payment window
- 2 minutes
- As published
- 1000 smallest units
1000units
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
- 0xf8A3…ef22f
- Token contract
- 0x3c49…c3359
- Payment window
- 2 minutes
1000units
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
- 0xf8A3…ef22f
- Token contract
- 0xaf88…e5831
- Payment window
- 2 minutes
8312units
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": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"memo": "saylor:util:convert",
"session": "eyJhcnRpY2xlSWQiOiJ1dGlsOmNvbnZlcnQiLCJyZWZlcmVuY2UiOiJBWFpGQmVSR0hUMXdERGpQTmNIUVBWRUI3RGVQTTJia1NVMnh5NEtzbjk5ZCIsInJlY2lwaWVudCI6IjdMU2pmckpmOGZOc0I4VkE5dTdOM1dFbjI1c21RTHBvYjNTdnlVdlhhY3k3IiwibWludCI6IkVQakZXZGQ1QXVmcVNTcWVNMnFOMXh6eWJhcEM4RzR3RUdHa1p3eVREdDF2IiwibWluQW1vdW50IjoxMDAwLCJleHAiOjE3OTAyODQ3NzM2NjR9.GLhyo1rxV7CX9rf2wkWedbz9yc_YS4tK7E967XVVNFg",
"feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb",
"reference": "AXZFBeRGHT1wDDjPNcHQPVEB7DePM2bkSU2xy4Ksn99d"
},
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"amount": "1000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
},
{
"asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
"extra": {
"memo": "saylor:util:convert",
"session": "eyJhcnRpY2xlSWQiOiJ1dGlsOmNvbnZlcnQiLCJyZWZlcmVuY2UiOiJGd2daRjR5WmhuZ0JUMkdGeUpyZjVYUmJjNVBmenBMdkdoNlBXNVZ1TUtWWiIsInJlY2lwaWVudCI6IjdMU2pmckpmOGZOc0I4VkE5dTdOM1dFbjI1c21RTHBvYjNTdnlVdlhhY3k3IiwibWludCI6IkVzOXZNRnJ6YUNFUm1KZnJGNEgyRllENEtDb05rWTExTWNDZThCZW53TllCIiwibWluQW1vdW50IjoxMDAwLCJleHAiOjE3OTAyODQ3NzM2NjR9.YKmjhF3rtqp-VpU3cVCJ-13d5cQ6NNO5YY4xbVmVKGA",
"feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb",
"reference": "FwgZF4yZhngBT2GFyJrf5XRbc5PfzpLvGh6PW5VuMKVZ"
},
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"amount": "1000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
},
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"memo": "saylor:util:convert",
"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": "0xf8A376eBF123D7252cd7b66bcD77A727a4def22f",
"amount": "1000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
},
{
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"memo": "saylor:util:convert",
"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": "0xf8A376eBF123D7252cd7b66bcD77A727a4def22f",
"amount": "1000",
"scheme": "exact",
"network": "eip155:137",
"maxTimeoutSeconds": 120
},
{
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"memo": "saylor:util:convert",
"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": "0xf8A376eBF123D7252cd7b66bcD77A727a4def22f",
"amount": "1000",
"scheme": "exact",
"network": "eip155:42161",
"maxTimeoutSeconds": 120
},
{
"asset": "So11111111111111111111111111111111111111112",
"extra": {
"memo": "saylor:util:convert",
"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": "eyJhcnRpY2xlSWQiOiJ1dGlsOmNvbnZlcnQiLCJyZWZlcmVuY2UiOiJDR0JVaDhGenJOOTVkWHhiZHUxeHNuS3pWamJVYlBORlVONGpTS1Y4NEtLNCIsInJlY2lwaWVudCI6IjdMU2pmckpmOGZOc0I4VkE5dTdOM1dFbjI1c21RTHBvYjNTdnlVdlhhY3k3IiwibWludCI6bnVsbCwibWluQW1vdW50Ijo4MzEyLCJleHAiOjE3OTAyODQ3NzM2NjR9.WVIvfdQns1Zhc2Etgqu4aQA2-dZHhntmYKkdmZP-g08",
"reference": "CGBUh8FzrN95dXxbdu1xsnKzVjbUbPNFUN4jSKV84KK4",
"solUsdPrice": 116.68,
"quotedLamports": "8570"
},
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"amount": "8312",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"to": "km",
"from": "mi",
"value": "10"
}
},
"output": {
"type": "json",
"example": {
"to": "km",
"from": "mi",
"value": 10,
"result": 16.09344,
"formula": "1 mi = 1.609344 km",
"category": "length"
}
}
},
"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",
"POST",
"PUT",
"PATCH",
"DELETE",
"HEAD"
],
"type": "string"
},
"queryParams": {
"type": "object",
"properties": {
"to": {
"type": "string",
"description": "unit of the same kind (query)"
},
"from": {
"type": "string",
"description": "unit, e.g. mi, kg, F, GiB (query)"
},
"value": {
"type": "string",
"description": "number (query)"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string",
"const": "json"
},
"example": {
"type": "object",
"required": [
"result"
],
"properties": {
"to": {
"type": "string"
},
"from": {
"type": "string"
},
"value": {
"type": [
"number",
"null"
]
},
"result": {
"type": [
"number",
"null"
]
},
"category": {
"type": "string"
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-09-24 21:17Z
- Last indexed by Roundhouse
- 2026-09-25 11:50Z
- Last enriched (probe, favicon, geo)
- 2026-09-24 22:15Z
- 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
Nothing indexed for this service or its provider yet. Not a claim that it is unused — only that we hold no record. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service saylorinnovations.com 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=saylorinnovations.com' 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/util/convert, 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.