> For the complete documentation index, see [llms.txt](https://docs.nexus.xyz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.nexus.xyz/api-reference/funding/fetch-funding-samples-v1.md).

# GET /api/v1/markets/{market\_id}/funding-samples

Funding premium-index samples

Funding premium-index samples.

`operationId`: `fetchFundingSamplesV1`

> **Declared server:** `https://api.testnet.nexus.xyz`. Examples follow the OpenAPI operation, path-item, then document server precedence and append the full operation path. A declared URL is not proof of live routing; verify the target deployment before use. See [Networks](/api-reference/guides/networks.md).

> **Not reachable through CCXT.** Premium-index samples between funding settlements, not funding rates. CCXT's only funding-rate structure is `FundingRateHistory` (a settled `fundingRate` at a timestamp), and `GET /markets/{market_id}/funding` already serves it as fetchFundingRateHistory. `FundingPremiumSample` carries a timestamp and `premium_index`, and states that the settled rate is a property of the settlement window rather than of an intra-window sample, so a fetchFundingRateHistory badge here would publish a `fundingRate` nothing can fill. fetchPremiumIndexOHLCV is the only other candidate in ccxt 4.5.76 and does not describe it either: it returns OHLCV candles, and these are scalar point observations. Reachable natively as the implicit publicGetMarketsMarketIdFundingSamples.

**Authentication:** none — this operation is public.

Dense per-tick premium-index samples (60s cadence, up to 480 points = 8h). Public — no authentication required.

## Parameters

| Name        | In    | Type      | Required | Default | Description                                                                                                                                                                                                                                                                                                                                                                                                                                            |
| ----------- | ----- | --------- | -------- | ------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| `market_id` | path  | `string`  | Yes      | —       | Market identifier (e.g. BTC-USDX-PERP, ETH-USDX-PERP). Uppercase ASCII alphanumeric segments joined by single hyphens, at most 64 characters. A value outside that set is rejected with `400` (`INVALID_MARKET_ID`) before any store is read — it cannot name a market, so an empty result would assert that nothing traded rather than that the question was malformed. A well-formed identifier that names no listed market is a `404`, not a `400`. |
| `limit`     | query | `integer` | No       | `480`   | Maximum samples to return (capped at 480).                                                                                                                                                                                                                                                                                                                                                                                                             |

## Responses

| Status | Body                                                                                     | Meaning                              |
| ------ | ---------------------------------------------------------------------------------------- | ------------------------------------ |
| `200`  | array of [`FundingPremiumSample`](/api-reference/guides/schemas.md#fundingpremiumsample) | Premium-index samples, oldest first. |
| `400`  | — *(no schema declared)*                                                                 | —                                    |

## Example

{% tabs %}
{% tab title="cURL" %}

```bash
curl -X GET 'https://api.testnet.nexus.xyz/api/v1/markets/BTC-USDX-PERP/funding-samples'
```

{% endtab %}

{% tab title="Python" %}

```python
import requests


response = requests.get("https://api.testnet.nexus.xyz/api/v1/markets/BTC-USDX-PERP/funding-samples")
response.raise_for_status()
print(response.json())
```

{% endtab %}

{% tab title="TypeScript" %}

```typescript
const response = await fetch("https://api.testnet.nexus.xyz/api/v1/markets/BTC-USDX-PERP/funding-samples", {
  method: "GET",
});
if (!response.ok) throw new Error(`${response.status} ${await response.text()}`);
console.log(await response.json());
```

{% endtab %}
{% endtabs %}

***

<sub>Generated from</sub> <sub></sub><sub>`eng/apps/exchange/api/openapi.json`</sub> <sub></sub><sub>(spec</sub> <sub></sub><sub>`0.9.70`</sub><sub>). Do not edit by hand — regenerate with</sub> <sub></sub><sub>`python3 product/docs/tools/api-reference/generate.py`</sub><sub>. Hand-authored context lives in the Guides pages.</sub>


---

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```
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```

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