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
0x6e53…a265eu-verifyBaseBase$0.005100%coinbase85d ago0x831a1d…39aa87
0xd579…071aeu-verifyBaseBase$0.005100%coinbase85d ago0x162c51…97c4d6
0x09c3…beeeeu-verifyBaseBase$0.005100%coinbase85d ago0x41ad54…3b01bd
0xedc6…d2d0eu-verifyBaseBase$0.005100%coinbase85d ago0x21f0a7…61e0d8
0x3aeb…8408eu-verifyBaseBase$0.005100%coinbase85d ago0x9f443e…5aa028
0xfa1c…65d1eu-verifyBaseBase$0.005100%coinbase85d ago0x3f051a…9872a9
0x3a3f…f3a7eu-verifyBaseBase$0.005100%coinbase85d ago0x50dd45…058be9
0x46bd…2ebdeu-verifyBaseBase$0.005100%coinbase85d ago0xc2f9b5…f359ff
0xf65a…3bcbeu-verifyBaseBase$0.005100%coinbase85d ago0x5f0e0c…620942
0x5e06…fb09eu-verifyBaseBase$0.001100%coinbase86d ago0x2949d0…4b620f
0x843b…c4a7eu-verifyBaseBase$0.001100%coinbase89d ago0xf43565…c32676
0x843b…c4a7eu-verifyBaseBase$0.001100%coinbase89d ago0x93763b…ef3d3a
0x843b…c4a7eu-verifyBaseBase$0.001100%coinbase89d ago0x9747ca…737e6b
0x843b…c4a7eu-verifyBaseBase$0.001100%coinbase89d ago0x81ace7…921688
0x843b…c4a7eu-verifyBaseBase$0.001100%coinbase89d ago0xcbf377…39d6ec
0x1b20…69b3eu-verifyBaseBase$0.005100%coinbase89d ago0x514ae6…087c27
0xa74f…e2f4eu-verifyBaseBase$0.002100%coinbase89d ago0xdf881b…a09e3d
0xc533…2d7aeu-verifyBaseBase$0.002100%coinbase90d ago0x7a5019…b13b2d
0xc533…2d7aeu-verifyBaseBase$0.002100%coinbase90d ago0x84b1e9…6f0805
0xc533…2d7aeu-verifyBaseBase$0.001100%coinbase90d ago0x7facca…4dafab
0xc533…2d7aeu-verifyBaseBase$0.001100%coinbase90d ago0x809913…3233e3
0xc533…2d7aeu-verifyBaseBase$0.002100%coinbase90d ago0x25f04e…34f58f
0xdffe…4fa5eu-verifyBaseBase$0.005100%coinbase91d ago0xba6769…524d4a
0xdffe…4fa5eu-verifyBaseBase$0.005100%coinbase91d ago0x0bdce2…288f6c
0xdffe…4fa5eu-verifyBaseBase$0.005100%coinbase91d ago0x176211…549725

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.