curl --request POST \
  --url https://forge.coreweave.com/api/distillation/v1/projects/{alias}/datasets/{datasetId}/append \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "params": {
    "query": {
      "source": "task",
      "after": "2023-11-07T05:31:56Z",
      "before": "2023-11-07T05:31:56Z",
      "filters": {}
    },
    "sampling": {
      "limit": 123
    },
    "split": {
      "val": 0.5,
      "by": "trace"
    }
  }
}
'

import requests

url = "https://forge.coreweave.com/api/distillation/v1/projects/{alias}/datasets/{datasetId}/append"

payload = { "params": {
        "query": {
            "source": "task",
            "after": "2023-11-07T05:31:56Z",
            "before": "2023-11-07T05:31:56Z",
            "filters": {}
        },
        "sampling": { "limit": 123 },
        "split": {
            "val": 0.5,
            "by": "trace"
        }
    } }
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    params: {
      query: {
        source: 'task',
        after: '2023-11-07T05:31:56Z',
        before: '2023-11-07T05:31:56Z',
        filters: {}
      },
      sampling: {limit: 123},
      split: {val: 0.5, by: 'trace'}
    }
  })
};

fetch('https://forge.coreweave.com/api/distillation/v1/projects/{alias}/datasets/{datasetId}/append', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://forge.coreweave.com/api/distillation/v1/projects/{alias}/datasets/{datasetId}/append",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'params' => [
        'query' => [
                'source' => 'task',
                'after' => '2023-11-07T05:31:56Z',
                'before' => '2023-11-07T05:31:56Z',
                'filters' => [
                                
                ]
        ],
        'sampling' => [
                'limit' => 123
        ],
        'split' => [
                'val' => 0.5,
                'by' => 'trace'
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://forge.coreweave.com/api/distillation/v1/projects/{alias}/datasets/{datasetId}/append"

	payload := strings.NewReader("{\n  \"params\": {\n    \"query\": {\n      \"source\": \"task\",\n      \"after\": \"2023-11-07T05:31:56Z\",\n      \"before\": \"2023-11-07T05:31:56Z\",\n      \"filters\": {}\n    },\n    \"sampling\": {\n      \"limit\": 123\n    },\n    \"split\": {\n      \"val\": 0.5,\n      \"by\": \"trace\"\n    }\n  }\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://forge.coreweave.com/api/distillation/v1/projects/{alias}/datasets/{datasetId}/append")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"params\": {\n    \"query\": {\n      \"source\": \"task\",\n      \"after\": \"2023-11-07T05:31:56Z\",\n      \"before\": \"2023-11-07T05:31:56Z\",\n      \"filters\": {}\n    },\n    \"sampling\": {\n      \"limit\": 123\n    },\n    \"split\": {\n      \"val\": 0.5,\n      \"by\": \"trace\"\n    }\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://forge.coreweave.com/api/distillation/v1/projects/{alias}/datasets/{datasetId}/append")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"params\": {\n    \"query\": {\n      \"source\": \"task\",\n      \"after\": \"2023-11-07T05:31:56Z\",\n      \"before\": \"2023-11-07T05:31:56Z\",\n      \"filters\": {}\n    },\n    \"sampling\": {\n      \"limit\": 123\n    },\n    \"split\": {\n      \"val\": 0.5,\n      \"by\": \"trace\"\n    }\n  }\n}"

response = http.request(request)
puts response.read_body

{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "task_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "name": "<string>",
  "params": {
    "query": {
      "source": "task",
      "after": "2023-11-07T05:31:56Z",
      "before": "2023-11-07T05:31:56Z",
      "filters": {
        "task_version": 1073741824,
        "resolved_provider": "<string>",
        "resolved_model": "<string>",
        "metadata": {}
      }
    },
    "sampling": {
      "strategy": "random",
      "limit": 50000
    },
    "split": {
      "val": 0.5,
      "by": "trace"
    }
  },
  "revision": 123,
  "status": "building",
  "build_progress": {
    "stage": "discovering",
    "processed": 123,
    "total": 123,
    "imported": 123
  },
  "entry_counts": {
    "total": 123,
    "train": 123,
    "val": 123
  },
  "relabel_runs": [
    {
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "dataset_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "dataset_revision": 123,
      "model_ref": "openai/gpt-5.6-sol",
      "status": "queued",
      "output_count": 123,
      "created_at": "2023-11-07T05:31:56Z",
      "updated_at": "2023-11-07T05:31:56Z",
      "error": "<string>"
    }
  ],
  "created_at": "2023-11-07T05:31:56Z",
  "updated_at": "2023-11-07T05:31:56Z"
}

{
  "error": {
    "message": "Project 'missing' not found in entity 'your-team'",
    "type": "not_found"
  }
}