Roundhouse

sitepulse.waltsoft.net

Detect construction and site change at any coordinate from Sentinel-2 imagery. $1.50 per check via x402 or API key.

OtherLiveeip155:8453Exactvia facilitator:thirdweb
https://sitepulse.waltsoft.net/v1/site
Calls · 30d
4↑ 14%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 30 snapshots so far.
$2.47
Verified settled volume
68 settlements proven x402 by their on-chain EIP-3009 marker.
$1.50
Listed price
As published in the catalog. Always read the live 402 before paying.
—
Calls · 30d
Upstream's own call count for this endpoint, not ours.
—
Unique payers · 30d
Never called
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x318A4B4764eb37c3FCBcE434713128143815FD57

The 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",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x318A4B4764eb37c3FCBcE434713128143815FD57",
      "amount": "1500000",
      "scheme": "exact",
      "network": "base",
      "mimeType": "application/json",
      "resource": "https://sitepulse.waltsoft.net",
      "description": "SitePulse site change check",
      "maxAmountRequired": "1500000",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F"
      },
      "payTo": "GsKr5q9TmiJQcEgUpBp2X6SmvSg3dnXuw2uxYJxgPTk8",
      "amount": "1500000",
      "scheme": "exact",
      "network": "solana",
      "mimeType": "application/json",
      "resource": "https://sitepulse.waltsoft.net",
      "description": "SitePulse site change check",
      "maxAmountRequired": "1500000",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://sitepulse.waltsoft.net/v1/site",
    "tags": [
      "satellite",
      "construction",
      "landuse",
      "change-detection",
      "geospatial"
    ],
    "iconUrl": "https://waltsoft.net/icon.png",
    "mimeType": "application/json",
    "description": "Has this place been built on or cleared in the last 12 months? Sentinel-2 satellite change detection for any lat/lon: NDVI/NDBI deltas, change direction, confidence and the scene-by-scene evidence.",
    "serviceName": "SitePulse"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "lat": "30.2216",
            "lon": "-97.6206"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "site": {
              "lat": 30.2216,
              "lon": -97.6206
            },
            "recent": {
              "to": "2026-08-08",
              "from": "2026-06-11",
              "ndbi": 0.04,
              "ndvi": 0.12
            },
            "baseline": {
              "to": "2025-10-02",
              "from": "2025-08-14",
              "ndbi": -0.08,
              "ndvi": 0.31
            },
            "confidence": "high",
            "scenes_used": 9,
            "change_detected": true,
            "change_direction": "built-up"
          }
        }
      },
      "schema": {
        "type": "object",
        "properties": {
          "site": {
            "type": "object",
            "description": "Echo of the requested coordinate"
          },
          "recent": {
            "type": "object"
          },
          "baseline": {
            "type": "object"
          },
          "evidence": {
            "type": "array",
            "items": {
              "type": "object"
            }
          },
          "confidence": {
            "enum": [
              "high",
              "medium",
              "low"
            ],
            "type": "string"
          },
          "scenes_used": {
            "type": "integer"
          },
          "change_detected": {
            "type": "boolean"
          },
          "change_direction": {
            "enum": [
              "built-up",
              "revegetated",
              "none",
              "inconclusive"
            ],
            "type": "string"
          }
        }
      },
      "routeTemplate": "/v1/site"
    }
  },
  "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.

1.5USDC≈ $1.5 USD
on Base · exact scheme

Pay 1.5 USDC on Base to 0x318A…5FD57. The signed payment is good for 5 minutes.

Paid to
0x318A…5FD57
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
1500000 smallest units
Buys
SitePulse site change check
Returns
application/json
1500000units
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
GsKr5q…gPTk8
Token contract
EPjFWd…TDt1v
Payment window
5 minutes
Buys
SitePulse site change check
Returns
application/json
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x318A4B4764eb37c3FCBcE434713128143815FD57",
    "scheme": "exact",
    "network": "eip155:8453",
    "mimeType": "application/json",
    "resource": "https://sitepulse.waltsoft.net",
    "description": "SitePulse site change check",
    "maxAmountRequired": "1500000",
    "maxTimeoutSeconds": 300
  },
  {
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "extra": {
      "name": "USD Coin",
      "version": "2",
      "feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"
    },
    "payTo": "GsKr5q9TmiJQcEgUpBp2X6SmvSg3dnXuw2uxYJxgPTk8",
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "mimeType": "application/json",
    "resource": "https://sitepulse.waltsoft.net",
    "description": "SitePulse site change check",
    "maxAmountRequired": "1500000",
    "maxTimeoutSeconds": 300
  }
]

Provenance

Seen in the source catalog
2026-10-02 03:03Z
Last indexed by Roundhouse
2026-10-20 14:15Z
Last enriched (probe, favicon, geo)
2026-10-08 17:15Z
x402 version
1
Max timeout
300s
Liveness probe
HTTP 402
Report

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. 30 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.

Open skill.md
Show the prompt
Using Roundhouse, look up the x402 service sitepulse.waltsoft.net 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=sitepulse.waltsoft.net'
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://sitepulse.waltsoft.net/v1/site, 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.