curl --request GET \
  --url https://matcher.sandbox.lerian.net/v1/discovery/connections/{connectionId}/schema/history \
  --header 'Authorization: Bearer <token>'

package main

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

func main() {

	url := "https://matcher.sandbox.lerian.net/v1/discovery/connections/{connectionId}/schema/history"

	req, _ := http.NewRequest("GET", url, nil)

	req.Header.Add("Authorization", "Bearer <token>")

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

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

	fmt.Println(string(body))

}

const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};

fetch('https://matcher.sandbox.lerian.net/v1/discovery/connections/{connectionId}/schema/history', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://matcher.sandbox.lerian.net/v1/discovery/connections/{connectionId}/schema/history"

headers = {"Authorization": "Bearer <token>"}

response = requests.get(url, headers=headers)

print(response.text)

{
  "connectionId": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
  "generations": [
    {
      "archivedAt": "2026-07-15T12:30:00Z",
      "tables": [
        {
          "columns": [
            {
              "name": "amount",
              "nullable": true,
              "type": "numeric"
            }
          ],
          "tableName": "transactions",
          "columnsNarrowed": true,
          "columnsStale": true,
          "notYetExtractableReason": "COLUMNS_NOT_ENUMERATED",
          "retirementCause": "ABSENT_FROM_CATALOG"
        }
      ],
      "fieldReport": "SAMPLED",
      "retirementCause": "ABSENT_FROM_CATALOG"
    }
  ]
}

{
  "code": "ERR-0001",
  "detail": "Property foo is required but is missing.",
  "errors": [
    {
      "location": "<string>",
      "message": "<string>",
      "value": "<unknown>"
    }
  ],
  "instance": "https://example.com/error-log/abc123",
  "status": 400,
  "title": "Bad Request",
  "type": "https://example.com/errors/example",
  "upstream": {
    "code": "E4001",
    "message": "account not found at provider"
  }
}