chainhilt-x402

Prediction market detail: resolution rules, outcomes with their tokenIds, tick size, fees and the raw venue payload. Errors: 400 invalid id, 422 unknown market, 502 venue failure.

DataLiveeip155:8453Exactvia cdp
PredictPolymarketPrediction-marketsMarkets
Calls · 30d
18
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 11 snapshots so far.
$2.30
Verified settled volume
811 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0010
Listed price
As published in the catalog. Always read the live 402 before paying.
18
Calls · 30d
Upstream's own call count for this endpoint, not ours.
3
Unique payers · 30d
Last called 2026-11-04 15:18Z
–
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xdECE8E839414E4a99213C658ABbD2294d5BD42B0

The wallet the 402 directs payment to. Its full payment record is on the merchant page.

Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Provider
Coming soonAgent #1151163ERC-8004

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
0x7a15…d67a0xdece…42b0BaseBase$0.01100%coinbase12d ago0xce3e33…6195bc
0x7a15…d67a0xdece…42b0BaseBase$0.01100%coinbase12d ago0xf07889…f173c0
0x7a15…d67a0xdece…42b0BaseBase$0.01100%coinbase12d ago0x078bde…943ce6
0x7a15…d67a0xdece…42b0BaseBase$0.01100%coinbase12d ago0xfb47e5…4db1bb
0x7a15…d67a0xdece…42b0BaseBase$0.01100%coinbase12d ago0x6ea0c2…a38dc5
0x7a15…d67a0xdece…42b0BaseBase$0.01100%coinbase12d ago0x611e3c…36c914
0x7a15…d67a0xdece…42b0BaseBase$0.01100%coinbase12d ago0xe566f5…3b89ce
0x7a15…d67a0xdece…42b0BaseBase$0.01100%coinbase12d ago0xa1bfae…1b0f77
0x7a15…d67a0xdece…42b0BaseBase$0.01100%coinbase12d ago0x7b82a3…76fc58
0x7a15…d67a0xdece…42b0BaseBase$0.01100%coinbase12d ago0x1c91ce…776d07
0x7a15…d67a0xdece…42b0BaseBase$0.001100%coinbase12d ago0x1da7a2…c8961c
0x7a15…d67a0xdece…42b0BaseBase$0.001100%coinbase12d ago0xa92a94…e62c6c
0x7a15…d67a0xdece…42b0BaseBase$0.001100%coinbase12d ago0x7f83e8…08d9ce
0x7a15…d67a0xdece…42b0BaseBase$0.001100%coinbase12d ago0xfe83f2…867747
0x7a15…d67a0xdece…42b0BaseBase$0.001100%coinbase12d ago0xf20086…e42244
0x7a15…d67a0xdece…42b0BaseBase$0.001100%coinbase12d ago0xc09f75…41d2f6
0x7a15…d67a0xdece…42b0BaseBase$0.001100%coinbase12d ago0x91b91e…782cf4
0x7a15…d67a0xdece…42b0BaseBase$0.001100%coinbase12d ago0x5eb364…e05b7e
0x7a15…d67a0xdece…42b0BaseBase$0.01100%coinbase12d ago0xcd3a2f…02e0c9
0x7a15…d67a0xdece…42b0BaseBase$0.01100%coinbase12d ago0xef31de…2998da
0x7a15…d67a0xdece…42b0BaseBase$0.01100%coinbase12d ago0x2fe270…25ab5b
0x7a15…d67a0xdece…42b0BaseBase$0.01100%coinbase12d ago0x877c08…135a1e
0x7a15…d67a0xdece…42b0BaseBase$0.001100%coinbase12d ago0x129eda…c4932e
0x7a15…d67a0xdece…42b0BaseBase$0.001100%coinbase12d ago0x5f0ce2…086f7f
0x7a15…d67a0xdece…42b0BaseBase$0.001100%coinbase12d ago0x62a363…5557e3

Live 402 challenge

Captured by the enrichment pass, not read just now. Prices can change. Always read the 402 the endpoint answers with.

{
  "error": "Payment Required",
  "price": {
    "amount": "0.001",
    "currency": "USDC"
  },
  "message": "This endpoint requires x402 payment",
  "paymentInfo": {
    "asset": "USDC",
    "network": "base",
    "x402Version": 2
  }
}

Accepts

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

0.001USDC≈ $0.001 USD
on Base · exact scheme

Pay 0.001 USDC on Base to 0xdECE…D42B0. The signed payment is good for 5 minutes.

USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
1000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0xdECE8E839414E4a99213C658ABbD2294d5BD42B0",
    "amount": "1000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "pathParams": {
          "marketId": "559687"
        },
        "queryParams": {}
      },
      "output": {
        "type": "json",
        "example": {
          "market": {
            "id": "512329",
            "raw": {
              "id": "512329"
            },
            "fees": {
              "rate": 0,
              "feeType": null
            },
            "venue": "polymarket",
            "status": "open",
            "eventId": "606422",
            "negRisk": false,
            "outcomes": [
              {
                "name": "Yes",
                "price": "0.43",
                "tokenId": "111"
              },
              {
                "name": "No",
                "price": "0.57",
                "tokenId": "222"
              }
            ],
            "question": "Will the Fed cut rates at its December meeting?",
            "tickSize": "0.01",
            "tradable": true,
            "closeTime": "2026-12-10T19:00:00.000Z",
            "liquidity": "125000.5",
            "volume24h": "48210.25",
            "observedAt": "2026-10-30T12:00:00.000Z",
            "resolution": {
              "rules": "Resolves Yes if the FOMC announces a cut to the federal funds target range at its December meeting.",
              "source": "https://www.federalreserve.gov"
            },
            "conditionId": "0x9f1c1c4c1d6a2b2f0d5a7e8b3c4d5e6f708192a3b4c5d6e7f8091a2b3c4d5e6f",
            "minOrderSize": "5"
          }
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method"
          ],
          "properties": {
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "GET"
              ],
              "type": "string"
            },
            "pathParams": {
              "type": "object",
              "$schema": "https://json-schema.org/draft/2020-12/schema",
              "required": [
                "marketId"
              ],
              "properties": {
                "marketId": {
                  "type": "string",
                  "pattern": "^[A-Za-z0-9_-]{1,128}$",
                  "description": "Polymarket market id as returned by markets/search, e.g. \"512329\"."
                }
              }
            },
            "queryParams": {
              "type": "object",
              "properties": {}
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    },
    "routeTemplate": "/api/v1/predict/polymarket/markets/:marketId"
  }
}

Provenance

Seen in the source catalog
2026-11-04 15:18Z
Last indexed by Roundhouse
2026-11-15 11:10Z
Last enriched (probe, favicon, geo)
2026-11-06 22:45Z
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

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 11 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 chainhilt-x402 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=chainhilt-x402'
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://chainhilt.ai/api/v1/predict/polymarket/markets/:marketId, 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.