eu-verify

Open markets on Kalshi, the CFTC-regulated US event exchange, most-traded first: ticker, title, live yes bid/ask (USD, 0-1), mid-quote implied probability, 24h volume, open interest and close time, from the public Trade API v2. Query: ?series=KXBTC (optional series_ticker filter, e.g. KXBTC, KXCPIYOY) &limit=1-25 (default 10). JSON, 5min cache. Cross-reference /v1/predict/polymarket for venue spreads.

TradingLiveeip155:8453Exactvia cdp
Prediction-marketsKalshiProbabilitiesEventsMacro
Settlements · 30d
131↑ 11%
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.
$12.05
Verified settled volume
1,567 settlements proven x402 by their on-chain EIP-3009 marker.
$0.010
Listed price
As published in the catalog. Always read the live 402 before paying.
–
Calls · 30d
Upstream's own call count for this endpoint, not ours.
–
Unique payers · 30d
Never called
–
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x6ab8efe305cce67daa48c97bde29c04402822dff

The wallet the 402 directs payment to. Its full payment record 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.

Recent payments · which agents last used it

Every indexed settlement paid to this service’s wallet, newest first. The index does not record which endpoint a payment was for, so if this wallet serves more than one endpoint, the rows include payments for the others. Paged up to the newest 5,000; the full history is on the merchant page.

Payer PayeeChainAmountx402RouteAgeTxn hash
0x4c29…9494eu-verifyBaseBase$0.001100%coinbase55d ago0x71b676…5e5891
0x4c29…9494eu-verifyBaseBase$0.001100%coinbase55d ago0x0e80b8…d00629
0x4c29…9494eu-verifyBaseBase$0.001100%coinbase55d ago0x273f30…ec5dc8
0x4c29…9494eu-verifyBaseBase$0.001100%coinbase55d ago0x465036…bb9f80
0x4c29…9494eu-verifyBaseBase$0.001100%coinbase55d ago0x44f931…eb9f47
0x4c29…9494eu-verifyBaseBase$0.001100%coinbase55d ago0x7bb3af…f18ea0
0x4c29…9494eu-verifyBaseBase$0.001100%coinbase55d ago0xf365a4…1b9610
0x4c29…9494eu-verifyBaseBase$0.001100%coinbase55d ago0x1f7b2a…e9d240
0x4c29…9494eu-verifyBaseBase$0.001100%coinbase55d ago0x031e41…5979c3
0x4c29…9494eu-verifyBaseBase$0.001100%coinbase55d ago0x82e077…d63f5d
0xe024…0b1aeu-verifyBaseBase$0.002100%coinbase56d ago0x4d79ab…5f154a
0x4c29…9494eu-verifyBaseBase$0.001100%coinbase56d ago0x675e82…faf634
0x4c29…9494eu-verifyBaseBase$0.001100%coinbase56d ago0x98eaf5…2db8eb
0x4c29…9494eu-verifyBaseBase$0.001100%coinbase56d ago0x789a34…5c7fdd
0x4c29…9494eu-verifyBaseBase$0.001100%coinbase56d ago0x64b827…1fb2c6
0x4c29…9494eu-verifyBaseBase$0.001100%coinbase56d ago0xf9bc88…ddd935
0x4c29…9494eu-verifyBaseBase$0.001100%coinbase56d ago0xd10226…55ebf1
0x0fcb…8774eu-verifyBaseBase$0.005100%coinbase58d ago0xd30037…c095a6
0xc9c7…1670eu-verifyBaseBase$0.001100%coinbase59d ago0x0fc52a…2b99fb
0x7dd8…17d2eu-verifyBaseBase$0.001100%coinbase59d ago0xc3bf87…8872ed
0x91f1…f880eu-verifyBaseBase$0.005100%coinbase60d ago0xdffc3c…87e8b4
0xe3ba…3fb3eu-verifyBaseBase$0.001100%coinbase61d ago0x02db9b…16a4f5
0xe3ba…3fb3eu-verifyBaseBase$0.005100%coinbase61d ago0x3cb176…ff1784
0x2ebe…89d3eu-verifyBaseBase$0.005100%coinbase62d ago0xd0a1c3…1e1918
0x99d5…cf80eu-verifyBaseBase$0.005100%coinbase62d ago0xda9f71…020822

Accepts

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

0.01USDC≈ $0.01 USD
on Base · exact scheme

Pay 0.01 USDC on Base to 0x6ab8…22dff. The signed payment is good for 5 minutes.

USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
10000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x6ab8efe305cce67daa48c97bde29c04402822dff",
    "amount": "10000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "limit": 5,
          "series": "KXFED"
        }
      },
      "output": {
        "type": "json",
        "example": {
          "count": 1,
          "series": "KXFED",
          "source": "Kalshi Trade API v2 (CFTC-regulated event exchange, live public quotes, prices in USD 0-1)",
          "markets": [
            {
              "title": "Will the upper bound of the federal funds rate be above 4.00% following the Fed's Mar 17, 2027 meeting?",
              "ticker": "KXFED-27MAR-T4.00",
              "yes_ask": 0.49,
              "yes_bid": 0.03,
              "subtitle": "4.00%",
              "close_time": "2027-03-17T17:55:00Z",
              "last_price": 0.05,
              "volume_24h": 21,
              "implied_prob": 0.26,
              "open_interest": 1305
            }
          ]
        }
      }
    },
    "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": {
                "limit": {
                  "type": "integer",
                  "default": 10,
                  "maximum": 25,
                  "minimum": 1,
                  "description": "Markets to return"
                },
                "series": {
                  "type": "string",
                  "description": "Kalshi series_ticker filter, e.g. KXBTC (optional)"
                }
              }
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-07-15 21:20Z
Last indexed by Roundhouse
2026-07-15 23:40Z
Last enriched (probe, favicon, geo)
2026-09-22 04:45Z
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

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 eu-verify 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=eu-verify'
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-datashop-production.up.railway.app/v1/predict/kalshi, 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.