Roundhouse AI

Convert currency

Convert an amount from one currency to another using reference rates (latest or a historical date). Amount defaults to 1.

OtherLiveeip155:8453Exactvia cdp
https://fx.openverbs.com/v1/convert
Convert currencyCurrency conversion apiExchange amount conversionForex rate conversionHistorical currency conversion
Calls · 30d
3→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 19 snapshots so far.
$7.15
Verified settled volume
1,410 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0060
Listed price
As published in the catalog. Always read the live 402 before paying.
3
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-09-06 08:06Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xb3f4de103F34b99f0Da19B4F16D6B53a14C2194A

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.

{
  "hint": "Use a supported wallet to pay for this resource using one of the supported payment methods returned in the WWW-Authenticate header. See https://mpp.dev/tools/wallet.md",
  "type": "https://paymentauth.org/problems/payment-required",
  "title": "Payment Required",
  "detail": "Payment is required (Convert an amount from one currency to another using reference rates (latest or a historical date). Amount defaults to 1.).",
  "status": 402,
  "challengeId": "GIIKKVLgnmmxOKe_wo77jlQv5DXrpQ5iD_IKZbyz-jA"
}

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

0.006USDC≈ $0.006 USD
on Base · exact scheme

Pay 0.006 USDC on Base to 0xb3f4…2194A. The signed payment is good for 5 minutes.

Paid to
0xb3f4…2194A
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
6000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0xb3f4de103F34b99f0Da19B4F16D6B53a14C2194A",
    "amount": "6000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "to": "AUD",
          "date": "2024-01-01",
          "from": "AUD",
          "amount": 1
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "properties": {
            "body": {
              "type": "object",
              "required": [
                "from",
                "to"
              ],
              "properties": {
                "to": {
                  "enum": [
                    "AUD",
                    "BRL",
                    "CAD",
                    "CHF",
                    "CNY",
                    "CZK",
                    "DKK",
                    "EUR",
                    "GBP",
                    "HKD",
                    "HUF",
                    "IDR",
                    "ILS",
                    "INR",
                    "ISK",
                    "JPY",
                    "KRW",
                    "MXN",
                    "MYR",
                    "NOK",
                    "NZD",
                    "PHP",
                    "PLN",
                    "RON",
                    "SEK",
                    "SGD",
                    "THB",
                    "TRY",
                    "USD",
                    "ZAR"
                  ],
                  "type": "string",
                  "description": "Target currency (ISO 4217)."
                },
                "date": {
                  "type": "string",
                  "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
                  "description": "Historical date (YYYY-MM-DD). Defaults to latest."
                },
                "from": {
                  "enum": [
                    "AUD",
                    "BRL",
                    "CAD",
                    "CHF",
                    "CNY",
                    "CZK",
                    "DKK",
                    "EUR",
                    "GBP",
                    "HKD",
                    "HUF",
                    "IDR",
                    "ILS",
                    "INR",
                    "ISK",
                    "JPY",
                    "KRW",
                    "MXN",
                    "MYR",
                    "NOK",
                    "NZD",
                    "PHP",
                    "PLN",
                    "RON",
                    "SEK",
                    "SGD",
                    "THB",
                    "TRY",
                    "USD",
                    "ZAR"
                  ],
                  "type": "string",
                  "description": "Source currency (ISO 4217)."
                },
                "amount": {
                  "type": "number",
                  "description": "Amount in the source currency. Defaults to 1.",
                  "exclusiveMinimum": 0
                }
              },
              "additionalProperties": false
            },
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "POST"
              ],
              "type": "string"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            }
          },
          "additionalProperties": false
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-09-06 08:06Z
Last indexed by Roundhouse
2026-09-24 13:50Z
Last enriched (probe, favicon, geo)
2026-09-14 00:15Z
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. 19 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 Convert currency 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=Convert%20currency'
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://fx.openverbs.com/v1/convert, 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.