Roundhouse

oraclepost.higgsfield.app

One host, sixteen single-purpose x402 stalls on Base: prices, balances, transfers, gas, address checks, text extraction, a momentum signal and a notice board. Live reads, goods before settlement, no third-party API.

TradingLiveeip155:8453Exactvia cdp
https://oraclepost.higgsfield.app/api/premium/balance
BalanceWalletUsdcBaseOnchain
Calls · 30d
1
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 8 snapshots so far.
$0.02
Verified settled volume
1 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 2026-09-16 19:46Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x72DF68E7b3e1E2FcFbaeDc7183810b92CB6ddBd7

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": "0x72DF68E7b3e1E2FcFbaeDc7183810b92CB6ddBd7",
      "amount": "20000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://oraclepost.higgsfield.app/api/premium/balance",
    "tags": [
      "balance",
      "wallet",
      "usdc",
      "base",
      "onchain"
    ],
    "mimeType": "application/json",
    "description": "ETH and USDC balance of any address on Base, read live from the chain (eth_getBalance + USDC balanceOf) at request time. Pass ?address=0x... . Returns raw and decimal values plus the block number the read was made at. No third-party API, no cache.",
    "serviceName": "Walletglass — wallet"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "address": "EVM address on Base, 0x-prefixed, 40 hex chars"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "eth": 0,
            "usdc": 9.8973,
            "block": 51234567,
            "address": "0xe3Badbd4f38214b9Eae528a1a5398f6678f63fB3",
            "eth_wei": "0",
            "network": "eip155:8453",
            "usdc_raw": "9897300"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method"
            ],
            "properties": {
              "type": {
                "const": "http"
              },
              "method": {
                "const": "GET"
              },
              "queryParams": {
                "type": "object",
                "required": [
                  "address"
                ],
                "properties": {
                  "address": {
                    "type": "string",
                    "description": "EVM address on Base, 0x-prefixed, 40 hex chars"
                  }
                }
              }
            }
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {}
            }
          }
        }
      }
    }
  },
  "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.

0.02USDC≈ $0.02 USD
on Base · exact scheme

Pay 0.02 USDC on Base to 0x72DF…ddBd7. The signed payment is good for 5 minutes.

Paid to
0x72DF…ddBd7
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": "0x72DF68E7b3e1E2FcFbaeDc7183810b92CB6ddBd7",
    "amount": "20000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "address": "EVM address on Base, 0x-prefixed, 40 hex chars"
        }
      },
      "output": {
        "type": "json",
        "example": {
          "eth": 0,
          "usdc": 9.8973,
          "block": 51234567,
          "address": "0xe3Badbd4f38214b9Eae528a1a5398f6678f63fB3",
          "eth_wei": "0",
          "network": "eip155:8453",
          "usdc_raw": "9897300"
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method"
          ],
          "properties": {
            "type": {
              "const": "http"
            },
            "method": {
              "const": "GET"
            },
            "queryParams": {
              "type": "object",
              "required": [
                "address"
              ],
              "properties": {
                "address": {
                  "type": "string",
                  "description": "EVM address on Base, 0x-prefixed, 40 hex chars"
                }
              }
            }
          }
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {}
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-09-16 19:46Z
Last indexed by Roundhouse
2026-09-24 08:50Z
Last enriched (probe, favicon, geo)
2026-09-17 17:15Z
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. 8 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 oraclepost.higgsfield.app 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=oraclepost.higgsfield.app'
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://oraclepost.higgsfield.app/api/premium/balance, 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.