> ## Documentation Index
> Fetch the complete documentation index at: https://docs.oddpool.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Get a matched event

> Fetch a matched event by its Oddpool ID.

Fetch one event by its Oddpool ID. Returns the same **event** object as [Get Oddpool ID by ticker](/institutions/reference-data/events/lookup).

## Path parameters

<ParamField path="opi" type="string" required>
  The event id, e.g. `OPI-OO4GBEZJ`.
</ParamField>

## Request

<CodeGroup>
  ```bash cURL theme={null}
  curl -H "X-API-Key: your_api_key" \
    "https://api.oddpool.com/reference/v2/events/OPI-OO4GBEZJ"
  ```

  ```python Python theme={null}
  import requests

  r = requests.get(
      "https://api.oddpool.com/reference/v2/events/OPI-OO4GBEZJ",
      headers={"X-API-Key": "your_api_key"},
  )
  event = r.json()
  ```
</CodeGroup>

## Response

A matched **event**. Every field is defined in [Response fields](/institutions/reference-data/response-fields#event).

```json theme={null}
{
  "oddpool_id": "OPI-OO4GBEZJ",
  "title": "Gremio vs Corinthians",
  "subject_domain": "Sports",
  "classified_at": "2026-05-25T18:42:11Z",
  "venue_listings": [
    {
      "oddpool_id": "OPL:KALSHI:KXBRASILEIROGAME-26MAY30GPACOR",
      "venue": "kalshi",
      "venue_event_id": "KXBRASILEIROGAME-26MAY30GPACOR",
      "venue_question": "Who will win the Brasileirão match Grêmio vs Corinthians on May 30?"
    },
    {
      "oddpool_id": "OPL:POLYMARKET:445404",
      "venue": "polymarket",
      "venue_event_id": "445404",
      "venue_question": "Grêmio vs Corinthians: Match Result"
    }
  ],
  "venue_pairs": [
    {
      "venue_a": "kalshi",
      "venue_a_event_id": "KXBRASILEIROGAME-26MAY30GPACOR",
      "venue_b": "polymarket",
      "venue_b_event_id": "445404",
      "basis_class": "identical",
      "outcome_universe": "identical"
    }
  ],
  "outcomes": [
    {
      "oddpool_id": "OPO:OO4GBEZJ:GREMIO-FBPA-JITQ",
      "label": "Grêmio FBPA",
      "outcome_kind": "multi_class_named",
      "outcome_params": {},
      "entity": {
        "oddpool_id": "OPE:TEAM:GREMIO-FBPA",
        "kind": "team",
        "canonical_name": "Grêmio FBPA",
        "aliases": ["Grêmio", "Gremio", "Tricolor Gaúcho"],
        "wikidata_qid": "Q190301",
        "metadata": {
          "league": "Campeonato Brasileiro Série A",
          "sport": "association football",
          "city": "Porto Alegre"
        }
      },
      "venue_listings": [
        {
          "oddpool_id": "OPL:KALSHI:KXBRASILEIROGAME-26MAY30GPACOR-GPA",
          "venue": "kalshi",
          "venue_market_id": "KXBRASILEIROGAME-26MAY30GPACOR-GPA",
          "venue_event_id": "KXBRASILEIROGAME-26MAY30GPACOR",
          "venue_yes_token": null,
          "venue_no_token": null,
          "venue_question": "Gremio"
        },
        {
          "oddpool_id": "OPL:POLYMARKET:0X830BC4CBE4FC945B6CEE65EB1B0A5FEBACB16004C4C7B702A20376E6E12B1429",
          "venue": "polymarket",
          "venue_market_id": "0x830bc4cbe4fc945b6cee65eb1b0a5febacb16004c4c7b702a20376e6e12b1429",
          "venue_event_id": "445404",
          "venue_yes_token": "30372052209701849468461148034092137114942310389987253992056832502897412952481",
          "venue_no_token": "74064390857285423190264600895526377480606423020566358098133374778358135580812",
          "venue_question": "Grêmio FBPA"
        }
      ],
      "venue_pairs": [
        {
          "venue_a": "kalshi",
          "venue_b": "polymarket",
          "fungible": false,
          "divergence_axes": ["condition_scope"],
          "divergence_reason": "Both resolve Yes if Grêmio wins in 90 minutes plus stoppage time, but Kalshi sends cancellation/reschedule over two weeks to fair price while Polymarket keeps postponed games open and canceled-without-makeup resolves No."
        }
      ]
    }
  ]
}
```

## Errors

Returns `404` when no event has this id:

```json theme={null}
{
  "detail": {
    "error_code": "EVENT_NOT_FOUND",
    "error": "no_canonical_match",
    "oddpool_id": "OPI-NONEXIST"
  }
}
```