---
title: "Get Open Interest"
method: GET
path: "/v1/perps/open_interest"
tags: ["Market Data"]
---

# Get Open Interest

`GET /v1/perps/open_interest`

Get open interest across all perpetual futures markets.

## Response `200`

Array of open interest objects per market

- object
  - `success` boolean, required — Whether the request was successful
  - `error` string — Error message, present only on failure
  - `error_code` string — Semantic error code. See each endpoint's error responses for the specific codes it can return.
  - `deprecated` string — Deprecation notice, if applicable
  - `result` OpenInterestRes[]
    - `market` string, required — Perpetual futures market
    - `openInterest` string, required — The open interest in base size
    - `notionalValue` string, required — The notional value of the open interest at the current mark price

## Other responses

- `429` — Rate limit exceeded. Slow down request frequency.
- `500` — Internal server error.

---

[API](https://skmtc.net/ondoperps/apis/ondo-perps-rest-api.md) · [All operations](https://skmtc.net/ondoperps/apis/ondo-perps-rest-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/ondoperps/ondo-perps-rest-api/revisions/39df6b2fa672/schema)