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
0xec2a…d034eu-verifyBaseBase$0.002100%coinbase38d ago0xd480e0…91bb51
0xec2a…d034eu-verifyBaseBase$0.002100%coinbase38d ago0xba16c0…d7ade4
0xec2a…d034eu-verifyBaseBase$0.002100%coinbase38d ago0x58b44b…50858a
0xec2a…d034eu-verifyBaseBase$0.002100%coinbase38d ago0xf13788…ea24ed
0xec2a…d034eu-verifyBaseBase$0.002100%coinbase38d ago0xf059ee…030473
0x6a0b…4518eu-verifyBaseBase$0.002100%coinbase38d ago0xddf342…6248d5
0x6a0b…4518eu-verifyBaseBase$0.01100%coinbase38d ago0xf68ca9…76c561
0x6a0b…4518eu-verifyBaseBase$0.002100%coinbase38d ago0x681b81…06b96a
0x6a0b…4518eu-verifyBaseBase$0.001100%coinbase38d ago0xeae4bf…d1254f
0x6a0b…4518eu-verifyBaseBase$0.002100%coinbase38d ago0xa91509…5cdecd
0x6a0b…4518eu-verifyBaseBase$0.001100%coinbase38d ago0x7ee8a6…43570e
0x6a0b…4518eu-verifyBaseBase$0.001100%coinbase38d ago0x3c0737…5018fa
0x6a0b…4518eu-verifyBaseBase$0.01100%coinbase38d ago0xf1a879…d6300b
0x6a0b…4518eu-verifyBaseBase$0.01100%coinbase38d ago0x036155…576d9c
0x6a0b…4518eu-verifyBaseBase$0.01100%coinbase38d ago0x5cb261…cf5d54
0x6a0b…4518eu-verifyBaseBase$0.01100%coinbase38d ago0x520f5c…739f7e
0x6a0b…4518eu-verifyBaseBase$0.01100%coinbase38d ago0x57615f…5425e4
0x6a0b…4518eu-verifyBaseBase$0.01100%coinbase38d ago0xf7fc6b…bd8fcf
0x6a0b…4518eu-verifyBaseBase$0.01100%coinbase38d ago0xc93c9f…f65779
0x6a0b…4518eu-verifyBaseBase$0.005100%coinbase38d ago0x25a2a5…27c661
0x6a0b…4518eu-verifyBaseBase$0.01100%coinbase38d ago0xd6d2ff…3279ef
0x6a0b…4518eu-verifyBaseBase$0.01100%coinbase38d ago0x0f527e…bcc7f6
0x6a0b…4518eu-verifyBaseBase$0.01100%coinbase38d ago0x24270a…9fa280
0x6a0b…4518eu-verifyBaseBase$0.005100%coinbase38d ago0x93c445…d14507
0x6a0b…4518eu-verifyBaseBase$0.005100%coinbase38d ago0x88dc99…fb7a37

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.