Saylor Innovations Running Pace
Running pace and speed calculator from distance and time - per kilometer and per mile
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.
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": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"memo": "saylor:sports:pace",
"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:sports:pace",
"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:sports:pace",
"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:sports:pace",
"session": "eyJhcnRpY2xlSWQiOiJzcG9ydHM6cGFjZSIsInJlZmVyZW5jZSI6Iko4RmFjdkhpYkFDMUxiWXBUVTVoVGJpU1Z6aG12YVg5aHVQRWRudDlQZ2J6IiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjoiRVBqRldkZDVBdWZxU1NxZU0ycU4xeHp5YmFwQzhHNHdFR0drWnd5VER0MXYiLCJtaW5BbW91bnQiOjEwMDAwLCJleHAiOjE3OTIzNjkwNDgwMjd9.B3y0jMdk_--vnALGFClLpprE0_6H9h7kd0qe5CaXHnM",
"feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP",
"reference": "J8FacvHibAC1LbYpTU5hTbiSVzhmvaX9huPEdnt9Pgbz"
},
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
},
{
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"extra": {
"memo": "saylor:sports:pace",
"session": "eyJhcnRpY2xlSWQiOiJzcG9ydHM6cGFjZSIsInJlZmVyZW5jZSI6IkNkVkY5WVY3dTdmVm5KVU05VXl5d00zUmphQ2M5cDNYQWZKN2hHZHhaMUd3IiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjoiRXM5dk1GcnphQ0VSbUpmckY0SDJGWUQ0S0NvTmtZMTFNY0NlOEJlbndOWUIiLCJtaW5BbW91bnQiOjEwMDAwLCJleHAiOjE3OTIzNjkwNDgwMjh9.w4cZmUijPnUu2Lf8eTjyxLoByw8JfQ3YmvnpRZ83_-4",
"feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP",
"reference": "CdVF9YV7u7fVnJUM9UyywM3RjaCc9p3XAfJ7hGdxZ1Gw"
},
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
},
{
"asset": "So11111111111111111111111111111111111111112",
"extra": {
"memo": "saylor:sports:pace",
"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": "eyJhcnRpY2xlSWQiOiJzcG9ydHM6cGFjZSIsInJlZmVyZW5jZSI6Ik1adnpNMVRiWDVkdjhYODV1bk5oZFZYeGNwYU5rUlFVNjJyQW5weW85NjciLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOm51bGwsIm1pbkFtb3VudCI6OTMyNzgsImV4cCI6MTc5MjM2OTA0ODEwM30.kbMRWoqRLJtidOt3UHFwM_yrN9tnJcbje1GZr6ngrBw",
"reference": "MZvzM1TbX5dv8X85unNhdVXxcpaNkRQU62rAnpyo967",
"solUsdPrice": 103.99,
"quotedLamports": "96163"
},
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"amount": "93278",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
}
],
"resource": {
"url": "https://saylorinnovations.com/api/sports/pace",
"tags": [
"sports",
"running",
"pace",
"splits"
],
"iconUrl": "https://saylorinnovations.com/og-image.jpg",
"mimeType": "application/json",
"description": "Running pace and speed calculator from distance and time - per kilometer and per mile",
"serviceName": "Saylor Innovations Running Pace"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"minutes": "25",
"distance_km": "5"
}
},
"output": {
"type": "json",
"example": {
"scope_note": "Arithmetic only; not training or medical advice.",
"distance_km": 5,
"time_minutes": 25,
"pace_minutes_per_km": 5,
"pace_minutes_per_mile": 8.05
}
}
},
"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": [
"distance_km",
"minutes"
],
"properties": {
"minutes": {
"type": "string",
"description": "required positive elapsed minutes (query)"
},
"distance_km": {
"type": "string",
"description": "required positive distance kilometers (query)"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string",
"const": "json"
},
"example": {
"type": "object",
"required": [
"distance_km",
"time_minutes",
"pace_minutes_per_km",
"pace_minutes_per_mile",
"scope_note"
],
"properties": {
"formula": {
"type": "string",
"description": "Formula used for the calculation"
},
"speed_kmh": {
"type": "number",
"description": "Speed kmh"
},
"scope_note": {
"type": "string",
"description": "What this data covers and what it leaves out"
},
"distance_km": {
"type": "number",
"description": "Distance in kilometres"
},
"time_minutes": {
"type": "number",
"description": "Time, in minutes"
},
"pace_minutes_per_km": {
"type": "number",
"description": "Pace minutes per, in kilometres"
},
"pace_minutes_per_mile": {
"type": "number",
"description": "Pace minutes per mile"
}
}
}
}
}
}
}
},
"method": "GET",
"example": {
"scope_note": "Arithmetic only; not training or medical advice.",
"distance_km": 5,
"time_minutes": 25,
"pace_minutes_per_km": 5,
"pace_minutes_per_mile": 8.05
},
"license": "Saylor calculation; limitations disclosed",
"mimeType": "application/json",
"freshness": "computed per request",
"tokenCount": null,
"description": "Calculate running pace, mile-equivalent pace, and speed from distance and elapsed minutes, returning transparent arithmetic and a clear non-training or medical scope note.",
"inputSchema": {
"minutes": "required positive elapsed minutes (query)",
"distance_km": "required positive distance kilometers (query)"
},
"serviceName": "Saylor Innovations — Running Pace Calculator",
"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": [
"distance_km",
"time_minutes",
"pace_minutes_per_km",
"pace_minutes_per_mile",
"speed_kmh",
"formula",
"scope_note"
],
"properties": {
"formula": {
"type": "string"
},
"speed_kmh": {
"type": "number"
},
"scope_note": {
"type": "string"
},
"distance_km": {
"type": "number"
},
"time_minutes": {
"type": "number"
},
"pace_minutes_per_km": {
"type": "number"
},
"pace_minutes_per_mile": {
"type": "number"
}
}
},
"noPathTemplate": true,
"settlementModes": [
"facilitator-transaction",
"self-submitted-reference"
],
"typicalLatencyMs": 10
},
"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.
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
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
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
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
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
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
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{
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"extra": {
"memo": "saylor:sports:pace",
"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:sports:pace",
"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:sports:pace",
"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
},
{
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"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88",
"reference": "2u7JS95tvsCh11D9dgyABLCCYjG7aAiv1wKAMF62nmmY"
},
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
},
{
"asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
"extra": {
"memo": "saylor:sports:pace",
"session": "eyJhcnRpY2xlSWQiOiJzcG9ydHM6cGFjZSIsInJlZmVyZW5jZSI6IjJoS1FMZGk3SjExeFliaGZCVTJSOTZXWTRRQnV0UFZmY0d4UXlKWDlIQnJhIiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjoiRXM5dk1GcnphQ0VSbUpmckY0SDJGWUQ0S0NvTmtZMTFNY0NlOEJlbndOWUIiLCJtaW5BbW91bnQiOjEwMDAwLCJleHAiOjE3OTIzNjY2MjE1MDl9.nDHx8ldZ4Q1684GM9EDJaLcf4VF6sp8rX3MvSio9P3Y",
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88",
"reference": "2hKQLdi7J11xYbhfBU2R96WY4QButPVfcGxQyJX9HBra"
},
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
},
{
"asset": "So11111111111111111111111111111111111111112",
"extra": {
"memo": "saylor:sports:pace",
"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": "eyJhcnRpY2xlSWQiOiJzcG9ydHM6cGFjZSIsInJlZmVyZW5jZSI6IjI5YUFRRUNWRjNlUGM5dUVyaURDNWN6VHk0WEd3allCcjl1djZyUjJOa2Y1IiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjpudWxsLCJtaW5BbW91bnQiOjkzMjU5LCJleHAiOjE3OTIzNjY2MjE1MDl9.p7HOWj4xWhtdMwZ-W-GXuN4sUeKdDrAOnf8uu5tSQOk",
"reference": "29aAQECVF3ePc9uEriDC5czTy4XGwjYBr9uv6rR2Nkf5",
"solUsdPrice": 104.01,
"quotedLamports": "96144"
},
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"amount": "93259",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"minutes": "25",
"distance_km": "5"
}
},
"output": {
"type": "json",
"example": {
"scope_note": "Arithmetic only; not training or medical advice.",
"distance_km": 5,
"time_minutes": 25,
"pace_minutes_per_km": 5,
"pace_minutes_per_mile": 8.05
}
}
},
"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": [
"distance_km",
"minutes"
],
"properties": {
"minutes": {
"type": "string",
"description": "required positive elapsed minutes (query)"
},
"distance_km": {
"type": "string",
"description": "required positive distance kilometers (query)"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string",
"const": "json"
},
"example": {
"type": "object",
"required": [
"distance_km",
"time_minutes",
"pace_minutes_per_km",
"pace_minutes_per_mile",
"scope_note"
],
"properties": {
"formula": {
"type": "string",
"description": "Formula used for the calculation"
},
"speed_kmh": {
"type": "number",
"description": "Speed kmh"
},
"scope_note": {
"type": "string",
"description": "What this data covers and what it leaves out"
},
"distance_km": {
"type": "number",
"description": "Distance in kilometres"
},
"time_minutes": {
"type": "number",
"description": "Time, in minutes"
},
"pace_minutes_per_km": {
"type": "number",
"description": "Pace minutes per, in kilometres"
},
"pace_minutes_per_mile": {
"type": "number",
"description": "Pace minutes per mile"
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-10-18 23:35Z
- Last indexed by Roundhouse
- 2026-10-26 15:20Z
- Last enriched (probe, favicon, geo)
- 2026-10-19 00:15Z
- 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
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 10 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.
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Using Roundhouse, look up the x402 service Saylor Innovations Running Pace 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%20%20Running%20Pace' 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/sports/pace?, 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.