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

# Polymarket: Get Open Interest

> Get the open interest, the value of outstanding positions, in one or more prediction markets. Includes inputs, outputs, SDK V2 examples, and Deepline cost.

Get the open interest, the value of outstanding positions, in one or more prediction markets.

> [!NOTE]
>
> Tool ID: `polymarket_get_open_interest`

## Run this action

This action has conditional or dynamic inputs. A static example cannot describe these inputs reliably.

Read the live contract before you execute this action:

```bash theme={"languages":{"custom":["/languages/deepline-prompt.json"]}}
deepline describe polymarket_get_open_interest --json
```

## Example response

The static output schema lacks the details for a reliable example. Use `deepline describe polymarket_get_open_interest --json` for the complete live contract.

## Input reference

**Data API v2:** this route has a v2 counterpart, `GET /v2/oi`. See [Migrating to Data API v2](https://deepline.com/docs/migrate/data-api-v1-to-v2).

| Name | Type | Required | Default | Details |
| - | - | - | - | - |
| `payload.market` | `array` | No | — | — |

<details>
  <summary>Show raw input schema</summary>

  ### Input JSON Schema

  ```json theme={"languages":{"custom":["/languages/deepline-prompt.json"]}}
  {
    "type": "object",
    "description": "**Data API v2:** this route has a v2 counterpart, `GET /v2/oi`. See [Migrating to Data API v2](/migrate/data-api-v1-to-v2).",
    "properties": {
      "market": {
        "type": "array",
        "items": {
          "type": "string",
          "description": "0x-prefixed 64-hex string",
          "pattern": "^0x[a-fA-F0-9]{64}$"
        }
      }
    },
    "required": [],
    "additionalProperties": false
  }
  ```
</details>

## Output reference

Standard tool result payload.

| Name | Type | Required | Default | Details |
| - | - | - | - | - |
| `result.data` | `array` | Yes | — | Provider response payload. |
| `result.data[].market` | `string` | No | — | 0x-prefixed 64-hex string Pattern: `^0x[a-fA-F0-9]&#123;64&#125;$`. |
| `result.data[].value` | `number` | No | — | — |
| `result.meta` | `object` | No | — | Additional response metadata (status, paging). |

<details>
  <summary>Show raw output schema</summary>

  ### Output JSON Schema

  ```json theme={"languages":{"custom":["/languages/deepline-prompt.json"]}}
  {
    "type": "object",
    "description": "Standard tool result payload.",
    "properties": {
      "data": {
        "type": "array",
        "description": "Provider response payload.",
        "items": {
          "type": "object",
          "properties": {
            "market": {
              "type": "string",
              "description": "0x-prefixed 64-hex string",
              "pattern": "^0x[a-fA-F0-9]{64}$"
            },
            "value": {
              "type": "number"
            }
          },
          "additionalProperties": false
        }
      },
      "meta": {
        "type": "object",
        "description": "Additional response metadata (status, paging).",
        "additionalProperties": true
      }
    },
    "required": [
      "data"
    ],
    "additionalProperties": false
  }
  ```
</details>

## Deepline cost

* Pricing model: `fixed` (per call).
* Estimated Deepline credits: `0` per pricing unit.
* Provider-native pricing may still exist outside Deepline credit billing.

## Related documentation

* [Polymarket provider guide](https://deepline.com/docs/providers/polymarket/guide.md)
* [SDK V2 quickstart](https://deepline.com/docs/sdk-v2/quickstart.md)
* [SDK reference](https://deepline.com/docs/sdk-v2/sdk-reference.md)
* [Run tools across a CSV](https://deepline.com/docs/sdk-v2/batch-csv.md)


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