Roundhouse

prediction-market

Detail of ONE prediction market or event by numeric id, 0x conditionId, market-slug or event-slug (auto-detected): normalized outcomes with implied probabilities, volume, liquidity, close date, status and a link-back.

TradingLiveeip155:8453Exactvia cdp
https://api.agentstools.dev/prediction/market
Prediction-marketsPolymarketMarket-detailOddsProbability
Calls · 30d
2↑ 71%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 30 snapshots so far.
$42.94
Verified settled volume
3,786 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.
2
Calls · 30d
Upstream's own call count for this endpoint, not ours.
2
Unique payers · 30d
Last called 2026-09-19 16:01Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xF22e558a00D91Ee12A1F50C52186FecB8dDFf493

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.

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",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xF22e558a00D91Ee12A1F50C52186FecB8dDFf493",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.agentstools.dev/prediction/market",
    "tags": [
      "prediction-markets",
      "polymarket",
      "market-detail",
      "odds",
      "probability",
      "conditionid",
      "slug",
      "event",
      "outcomes",
      "lookup"
    ],
    "mimeType": "application/json",
    "description": "Detail of ONE prediction market or event by numeric id, 0x conditionId, market-slug or event-slug (auto-detected): normalized outcomes with implied probabilities, volume, liquidity, close date, status and a link-back.",
    "serviceName": "prediction-market"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "id": "will-abiy-ahmed-be-the-next-prime-minister-of-ethiopia"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "type": "market",
            "query": "0xabc",
            "market": {
              "link": "https://polymarket.com/event/…",
              "venue": "polymarket",
              "status": "open",
              "volume": 102938.6,
              "question": "Will Abiy Ahmed be the next PM of Ethiopia?",
              "money_type": "real",
              "implied_prob": 0.9565,
              "implied_outcome": "Yes"
            },
            "disclaimer": "Prediction-market data, not financial advice."
          }
        }
      },
      "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",
                "required": [
                  "id"
                ],
                "properties": {
                  "id": {
                    "type": "string",
                    "description": "Market/event id: numeric id, 0x conditionId, market-slug or event-slug"
                  },
                  "venue": {
                    "enum": [
                      "polymarket"
                    ],
                    "type": "string",
                    "description": "Venue (default polymarket)"
                  },
                  "id_type": {
                    "enum": [
                      "market_id",
                      "condition_id",
                      "market_slug",
                      "event_slug"
                    ],
                    "type": "string",
                    "description": "Optional hint; auto-detected if omitted"
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object"
              }
            }
          }
        }
      }
    }
  },
  "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.

0.01USDC≈ $0.01 USD
on Base · exact scheme

Pay 0.01 USDC on Base to 0xF22e…Ff493. The signed payment is good for 5 minutes.

Paid to
0xF22e…Ff493
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": "0xF22e558a00D91Ee12A1F50C52186FecB8dDFf493",
    "amount": "10000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "id": "will-abiy-ahmed-be-the-next-prime-minister-of-ethiopia"
        }
      },
      "output": {
        "type": "json",
        "example": {
          "type": "market",
          "query": "0xabc",
          "market": {
            "link": "https://polymarket.com/event/…",
            "venue": "polymarket",
            "status": "open",
            "volume": 102938.6,
            "question": "Will Abiy Ahmed be the next PM of Ethiopia?",
            "money_type": "real",
            "implied_prob": 0.9565,
            "implied_outcome": "Yes"
          },
          "disclaimer": "Prediction-market data, not financial advice."
        }
      }
    },
    "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",
              "required": [
                "id"
              ],
              "properties": {
                "id": {
                  "type": "string",
                  "description": "Market/event id: numeric id, 0x conditionId, market-slug or event-slug"
                },
                "venue": {
                  "enum": [
                    "polymarket"
                  ],
                  "type": "string",
                  "description": "Venue (default polymarket)"
                },
                "id_type": {
                  "enum": [
                    "market_id",
                    "condition_id",
                    "market_slug",
                    "event_slug"
                  ],
                  "type": "string",
                  "description": "Optional hint; auto-detected if omitted"
                }
              }
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-09-19 16:01Z
Last indexed by Roundhouse
2026-09-24 10:50Z
Last enriched (probe, favicon, geo)
2026-09-23 23:45Z
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. 30 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 prediction-market 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=prediction-market'
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://api.agentstools.dev/prediction/market, 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.