# Largest individual dark-pool prints for a ticker

`GET https://flow-api.skylit.ai/v1/dark-pool/top-prints/{ticker}`

API: Flowseeker. Credits: 3.

The top-N largest individual off-exchange prints for `{ticker}` over a
trailing window, ordered by notional descending. Each row is a single
TRF print (not an aggregate), useful as a support/resistance anchor.

## Authentication

Send your Skylit API key as a bearer token: `Authorization: Bearer <key>`. No other header is accepted.

## Parameters

| Name | In | Type | Required | Description |
| --- | --- | --- | --- | --- |
| `ticker` | path | string | yes | Underlying ticker symbol (uppercase, e.g. `SPY`, `AAPL`). |
| `top_n` | query | integer | no | Number of largest prints to return. (default `5`; min 1; max 20) |
| `lookback_days` | query | integer | no | Calendar-day trailing window. (default `45`; min 1; max 180) |
| `as_of_date` | query | string (date) | no | Optional anchor date (`YYYY-MM-DD`); the window becomes `[as_of_date - lookback_days, as_of_date]`. Omit for a today-anchored window. |

## Example request

```bash
curl "https://flow-api.skylit.ai/v1/dark-pool/top-prints/SPY" \
  -H "Authorization: Bearer $SKYLIT_API_KEY"
```

## Responses

### 200

Top-N largest prints for `{ticker}`, ordered by notional.

Shape (placeholder values):

```json
{
  "data": [
    {
      "timestamp": "string",
      "price": 0,
      "notional": 0,
      "size": 0
    }
  ],
  "meta": {
    "timestamp": "string",
    "requestId": "d7574836"
  }
}
```

### 400

Request validation failed.

invalidParam:

```json
{
  "error": {
    "code": "BAD_REQUEST",
    "message": "Invalid parameter 'timeframe': must be one of [1m, 5m, 15m, 1h, 4h, 1d, 1w, 1M]"
  }
}
```

### 401

Missing or invalid API key.

missingKey:

```json
{
  "error": {
    "code": "UNAUTHORIZED",
    "message": "Authentication required"
  }
}
```

### 402

The account's shared Skylit credit balance is lower than this route's cost. Top up to continue. Carries `X-Credits-Remaining: 0`.

Headers: `X-Credits-Remaining`.

outOfCredits:

```json
{
  "error": {
    "code": "insufficient_credits",
    "message": "Out of credits. Top up to continue making requests."
  }
}
```

### 403

API key invalid, revoked or expired, or the account's API access is suspended (`account_suspended`).

accountSuspended:

```json
{
  "error": {
    "code": "account_suspended",
    "message": "API access has been suspended for this account. Contact support."
  }
}
```

### 404

Unknown resource (ticker / sector / window with no data).

noData:

```json
{
  "error": {
    "code": "NOT_FOUND",
    "message": "No trades found for AAPL on 2026-05-27 with timeframe 1d"
  }
}
```

### 429

Per-minute rate limit exceeded.

Headers: `Retry-After`.

tooFast:

```json
{
  "error": {
    "code": "RATE_LIMITED",
    "message": "Rate limit of 100 req/min exceeded. Retry after 18s."
  }
}
```

### 503

Underlying data source temporarily unavailable, or the credit balance could not be verified (`credit_check_failed`). Safe to retry.

ingestionLag:

```json
{
  "error": {
    "code": "UNAVAILABLE",
    "message": "Live feed is degraded; please retry in a few seconds."
  }
}
```

creditCheckFailed:

```json
{
  "error": {
    "code": "credit_check_failed",
    "message": "Could not verify credit balance. Please retry."
  }
}
```