x402-catalog-change-bundle
The whole period in one call: up to 100 counted units of detected change from the stored x402 catalogue observations. One unit = one target x one field x one detected change inside the period you pass. The response states units_requested, units_delivered and the unit definition, and when fewer units exist it says why — separating fields that were observed and did not change from fields whose target is missing observation cycles. One GET, one delivery, read-only, no live upstream call. A purchase is two calls by design: this first call returns 402 with the price and the payment terms, and you then repeat the same request with the PAYMENT-SIGNATURE header to receive the 200 delivery.
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.
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 0.1 USDC on Base to 0x6f60…F89c3. The signed payment is good for 1 minute.
- Paid to
- 0x6f60…F89c3
- USD Coin contract
- 0x8335…02913
- Payment window
- 1 minute
- As published
- 100000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x6f60659390aDA1D02B14024d8c9d0C889f2F89c3",
"amount": "100000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"to": "2026-10-20T17:13:00.304Z",
"from": "2026-10-11T12:31:51.688Z",
"order": "oldest",
"units": "100"
}
},
"output": {
"type": "json",
"example": {
"units": [
{
"to": 19102,
"from": 19080,
"kind": "changed",
"cycle": 3,
"field": "totalResources",
"target_id": "catalog.resources",
"unit_index": 1,
"observed_at": "2026-10-11T12:45:38.498Z"
}
],
"shortfall": {
"units": 98,
"reasons": [
{
"code": "no_more_units",
"count": 98
}
],
"unit_slots": {
"detected_change": 2
}
},
"product_id": "x402-catalog-change-bundle",
"snapshot_id": "snap-0000000000000000",
"unit_definition": {
"one_unit": "one observation target x one checked field x one detected change inside the selected period (the values before and after, at one observation time). One field change = one unit.",
"max_units_per_delivery": 100
},
"units_delivered": 2,
"units_requested": 100,
"units_unavailable": 98
}
}
},
"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",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"type": "object",
"properties": {
"to": {
"type": "string"
},
"from": {
"type": "string"
},
"order": {
"type": "string"
},
"units": {
"type": "string"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-10-23 11:30Z
- Last indexed by Roundhouse
- 2026-10-26 13:16Z
- Last enriched (probe, favicon, geo)
- 2026-10-23 14:46Z
- x402 version
- 2
- Max timeout
- 60s
- 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
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service x402-catalog-change-bundle 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=x402-catalog-change-bundle' 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://x402-catalog-history.ai-business-surface.workers.dev/changes/bundle, 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.