Roundhouse AI

dns-email-hygiene.relayhop.workers.dev

Convert an amount between two currencies with synthesized bid/ask spread and effective rate. Query: ?from=USD&to=EUR&amount=100&spread_bps=50. Source: ECB via frankfurter (keyless).

SocialLiveeip155:8453Exactvia cdp
https://dns-email-hygiene.relayhop.workers.dev/v1/fx/convert
Settlements · 30d
44↓ 100%
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.
$1.83
Verified settled volume
213 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0050
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 2026-07-27 20:48Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x20BeFfad24499E9b3d45dD0971B1D6AFB0AE925D

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.

0.005USDC≈ $0.005 USD
on Base · exact scheme

Pay 0.005 USDC on Base to 0x20Be…E925D. The signed payment is good for 5 minutes.

Paid to
0x20Be…E925D
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
5000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x20BeFfad24499E9b3d45dD0971B1D6AFB0AE925D",
    "amount": "5000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "to": "3-letter ISO code (default EUR)",
          "from": "3-letter ISO code (default USD)",
          "amount": "amount to convert (default 1)",
          "spread_bps": "bid-ask spread in bps, 0-1000 (default 50)"
        },
        "discoverable": true
      },
      "output": {
        "type": "json",
        "example": {
          "to": "EUR",
          "from": "USD",
          "amount": 100,
          "mid_rate": 0.86,
          "converted": 86.2,
          "effective_rate": 0.862
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "properties": {
            "to": {
              "in": "query",
              "type": "string",
              "description": "3-letter ISO code (default EUR)"
            },
            "from": {
              "in": "query",
              "type": "string",
              "description": "3-letter ISO code (default USD)"
            },
            "amount": {
              "in": "query",
              "type": "string",
              "description": "amount to convert (default 1)"
            },
            "spread_bps": {
              "in": "query",
              "type": "string",
              "description": "bid-ask spread in bps, 0-1000 (default 50)"
            }
          }
        },
        "output": {
          "type": "object"
        }
      }
    },
    "description": "Convert an amount between two currencies with synthesized bid/ask spread and effective rate. Query: ?from=USD&to=EUR&amount=100&spread_bps=50. Source: ECB via frankfurter (keyless)."
  }
}

Provenance

Seen in the source catalog
2026-07-27 20:48Z
Last indexed by Roundhouse
2026-08-26 20:50Z
Last enriched (probe, favicon, geo)
2026-09-11 10:16Z
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

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.

Open skill.md
Show the prompt
Using Roundhouse, look up the x402 service dns-email-hygiene.relayhop.workers.dev 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=dns-email-hygiene.relayhop.workers.dev'
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://dns-email-hygiene.relayhop.workers.dev/v1/fx/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.