Roundhouse AI

x402-catalog-changes

What changed in the x402 Bazaar catalog since yesterday: price changes and payTo changes (the address you'd pay moved — a pre-payment guard). ?type=price,payto to filter. Objective a->b diff, no labels — only a holder of past daily snapshots can compute it. For registries/agents that must not route on stale data.

TradingLiveeip155:8453Exactvia cdp
https://x402.dailyelo.com/v1/catalog/changes
x402EcosystemCatalogChange-feedFeed
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 29 snapshots so far.
$4.93
Verified settled volume
326 settlements proven x402 by their on-chain EIP-3009 marker.
$0.020
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 2026-08-23 01:23Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xD617a7145ca56E3ed58d639F9DEC6999B22441eE

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.

0.02USDC≈ $0.02 USD
on Base · exact scheme

Pay 0.02 USDC on Base to 0xD617…441eE. The signed payment is good for 5 minutes.

Paid to
0xD617…441eE
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
20000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0xD617a7145ca56E3ed58d639F9DEC6999B22441eE",
    "amount": "20000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "type": "price,payto",
          "limit": "500"
        }
      },
      "output": {
        "type": "json",
        "example": {
          "counts": {
            "price_up": 7,
            "price_down": 2,
            "payto_changes": 5,
            "price_changes": 9,
            "matched_resources": 24531
          },
          "schema": "catalogchanges/v1",
          "changes": [
            {
              "type": "payto",
              "domain": "x402.example.com",
              "resource": "https://x402.example.com/v1/x",
              "new_payto": "0xdef…",
              "old_payto": "0xabc…"
            },
            {
              "type": "price",
              "domain": "api.example.com",
              "resource": "https://api.example.com/v1/y",
              "delta_pct": 8.5,
              "direction": "up",
              "new_amount_usd": 0.0095,
              "old_amount_usd": 0.001
            }
          ],
          "to_date": "2026-07-20",
          "since_date": "2026-07-19"
        }
      }
    },
    "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": {
                "type": {
                  "type": "string",
                  "description": "comma-separated: price,payto (omit for all)"
                },
                "limit": {
                  "type": "string",
                  "description": "max changes (default 500)"
                }
              },
              "description": "Objective diff of the CDP Bazaar catalog since the previous daily snapshot: price changes (a service raised/lowered its price) and payTo changes (the receiving address you'd pay MOVED — a pre-payment guard). ?type=price,payto to filter. Facts only (a->b), no threat/quality labels. Only a holder of past snapshots can compute this — registries/agents that index x402 need it to avoid stale routing."
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-08-23 01:23Z
Last indexed by Roundhouse
2026-09-22 01:00Z
Last enriched (probe, favicon, geo)
2026-09-10 07:45Z
x402 version
2
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. 29 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 x402-catalog-changes 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-changes'
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.dailyelo.com/v1/catalog/changes, 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.