curl -s \
  "https://engine.example.com/v1/instruments/FUND/precheck?act=subscription&holderId=alpha&units=100.0" \
  -H "Authorization: Bearer $TOKEN"

// A client from OpenAPI Generator: see Build a client.
import {
  Configuration,
  PoliciesApi,
  ProblemFromJSON,
  ResponseError,
} from "./nodeasset-client";

const api = new PoliciesApi(new Configuration({
  basePath: "https://engine.example.com",
  accessToken: process.env.TOKEN,
}));

try {
  const answer = await api.getPrecheck({
    instrumentId: "FUND",
    act: "subscription",
    holderId: "alpha",
    units: 100.0,
  });
  console.log(answer.value);
} catch (e) {
  if (!(e instanceof ResponseError)) throw e;
  // A refusal is a problem; its type ends in the slug.
  const problem = ProblemFromJSON(await e.response.json());
  const slug = problem.type.split(":").pop();
  console.error(e.response.status, slug, problem.detail);
}

# A client from OpenAPI Generator: see Build a client.
import os
import sys

import nodeasset_client

config = nodeasset_client.Configuration(
    host="https://engine.example.com",
    access_token=os.environ["TOKEN"],
)
with nodeasset_client.ApiClient(config) as client:
    api = nodeasset_client.PoliciesApi(client)
    try:
        answer = api.get_precheck(
            instrument_id="FUND",
            act="subscription",
            holder_id="alpha",
            units=100.0,
        )
        print(answer.value)
    except nodeasset_client.ApiException as e:
        # A refusal is a problem; its type ends in the slug.
        problem = nodeasset_client.Problem.from_json(e.body)
        slug = problem.type.rsplit(":", 1)[-1]
        print(e.status, slug, problem.detail, file=sys.stderr)

// A client from OpenAPI Generator: see Build a client.
import java.math.BigDecimal;
import nodeasset.client.ApiClient;
import nodeasset.client.ApiException;
import nodeasset.client.api.PoliciesApi;
import nodeasset.client.model.PrecheckAct;
import nodeasset.client.model.Problem;

public class GetPrecheck {
  public static void main(String[] args) throws Exception {
    ApiClient client = new ApiClient();
    client.updateBaseUri("https://engine.example.com");
    client.setRequestInterceptor(builder ->
        builder.header("Authorization", "Bearer " + System.getenv("TOKEN")));
    PoliciesApi api = new PoliciesApi(client);

    try {
      var request = PoliciesApi.APIGetPrecheckRequest.newBuilder()
          .instrumentId("FUND")
          .act(PrecheckAct.fromValue("subscription"))
          .holderId("alpha")
          .units(new BigDecimal("100.0"))
          .build();
      var answer = api.getPrecheck(request);
      System.out.println(answer.getValue());
    } catch (ApiException e) {
      // A refusal is a problem; its type ends in the slug.
      Problem problem = client.getObjectMapper()
          .readValue(e.getResponseBody(), Problem.class);
      String type = problem.getType();
      String slug = type.substring(type.lastIndexOf(':') + 1);
      System.err.println(e.getCode() + " " + slug + " " + problem.getDetail());
    }
  }
}