Roundhouse AI

page-diff-watch

Change watch for page diff: runs the check and compares it with the result from your previous call for the same url (kept 90 days), returning the current answer, changed true/false, exactly which fields changed with before/after values, and when it was last seen. Call it on a schedule to be told when page text diff against your previous call changes. $0.01 per check.

SearchLiveeip155:8453Exactvia cdp
https://intel.rallylive.ca/watch/page/text-diff
DiffMonitoringChangesWatchChange-detection
Calls · 30d
1
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 11 snapshots so far.
$2.75
Verified settled volume
275 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 2026-09-13 13:04Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x91D568599fB802Cb3f03F067D2063785dBAF0abd

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.

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 0x91D5…F0abd. The signed payment is good for 2 minutes.

Paid to
0x91D5…F0abd
USD Coin contract
0x8335…02913
Payment window
2 minutes
As published
10000 smallest units
0.01USDC≈ $0.01 USD
on Base Sepolia · exact scheme

Pay 0.01 USDC on Base Sepolia to 0x91D5…F0abd. The signed payment is good for 2 minutes.

Paid to
0x91D5…F0abd
USD Coin (Base Sepolia) contract
0x036C…dCF7e
Payment window
2 minutes
As published
10000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x91D568599fB802Cb3f03F067D2063785dBAF0abd",
    "amount": "10000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 120
  },
  {
    "asset": "0x036CbD53842c5426634e7929541eC2318f3dCF7e",
    "extra": {
      "name": "USDC",
      "version": "2"
    },
    "payTo": "0x91D568599fB802Cb3f03F067D2063785dBAF0abd",
    "amount": "10000",
    "scheme": "exact",
    "network": "eip155:84532",
    "maxTimeoutSeconds": 120
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "url": "https://example.com/"
        }
      },
      "output": {
        "type": "json",
        "example": {
          "url": "https://example.com/",
          "changed": true,
          "changes": [
            {
              "after": "…",
              "field": "…",
              "before": "…"
            }
          ],
          "current": {
            "url": "https://example.com/",
            "added": [
              "New pricing effective October"
            ],
            "changed": true,
            "removed": [
              "Old pricing"
            ],
            "first_seen": false,
            "similarity": 0.94,
            "last_checked": "2026-09-10T00:00:00.000Z"
          },
          "first_seen": false,
          "previous_at": "2026-09-12T00:00:00.000Z"
        }
      }
    },
    "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",
              "properties": {}
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-09-13 13:04Z
Last indexed by Roundhouse
2026-09-24 14:20Z
Last enriched (probe, favicon, geo)
2026-09-13 14:45Z
x402 version
2
Max timeout
120s
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. 11 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 page-diff-watch 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=page-diff-watch'
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://intel.rallylive.ca/watch/page/text-diff, 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.