> ## Documentation Index
> Fetch the complete documentation index at: https://docs.whitebit.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Query market fees

> Get default spot and futures maker/taker fee rates and custom per-market overrides via the WhiteBIT V4 API.

export const signerFields = [{
  "name": "market",
  "type": "string",
  "required": false,
  "paramIn": "query",
  "description": "Optional. Currently ignored by the API — all market fees are returned regardless of the value provided. Retained for backward compatibility. Example: BTC_USDT",
  "example": "BTC_USDT"
}];

export const WhitebitSigner = ({path: defaultPath = "/api/v4/order/market", defaultParams = "{}", fields = null}) => {
  const {useState, useMemo} = React;
  const [baseUrl, setBaseUrl] = useState("https://whitebit.com");
  const getApiHost = () => baseUrl;
  const hex = buf => Array.from(new Uint8Array(buf)).map(b => b.toString(16).padStart(2, "0")).join("");
  const b64 = s => {
    const bytes = new TextEncoder().encode(s);
    let bin = "";
    bytes.forEach(b => bin += String.fromCharCode(b));
    return btoa(bin);
  };
  const hmacSha512Hex = async (secret, msg) => {
    const key = await crypto.subtle.importKey("raw", new TextEncoder().encode(secret), {
      name: "HMAC",
      hash: "SHA-512"
    }, false, ["sign"]);
    const sig = await crypto.subtle.sign("HMAC", key, new TextEncoder().encode(msg));
    return hex(sig);
  };
  const queryFields = fields ? fields.filter(function (f) {
    return f.paramIn === "query" || f.paramIn === "path";
  }) : [];
  const bodyFields = fields ? fields.filter(function (f) {
    return !f.paramIn || f.paramIn === "body";
  }) : [];
  const [open, setOpen] = useState(false);
  const [authOpen, setAuthOpen] = useState(true);
  const [paramsOpen, setParamsOpen] = useState(true);
  const [apiKey, setApiKey] = useState("");
  const [apiSecret, setApiSecret] = useState("");
  const [showSecret, setShowSecret] = useState(false);
  const [path, setPath] = useState(defaultPath);
  const initFieldValues = fieldDefs => {
    if (!fieldDefs) return {};
    const vals = {};
    for (const f of fieldDefs) {
      vals[f.name] = f.default !== undefined ? String(f.default) : "";
    }
    return vals;
  };
  const [fieldValues, setFieldValues] = useState(function () {
    return initFieldValues(fields);
  });
  const [showRaw, setShowRaw] = useState(false);
  const [params, setParams] = useState(defaultParams === "{}" ? "" : defaultParams);
  const [computed, setComputed] = useState(null);
  const [response, setResponse] = useState(null);
  const [busy, setBusy] = useState(false);
  const [error, setError] = useState("");
  const [urlCopied, setUrlCopied] = useState(false);
  const useFieldsMode = fields !== null && fields !== undefined && !showRaw;
  const setFieldValue = (name, value) => setFieldValues(function (prev) {
    return {
      ...prev,
      [name]: value
    };
  });
  const toggleRaw = () => {
    if (fields === null || fields === undefined) return;
    if (!showRaw) {
      const obj = {};
      for (const f of bodyFields) {
        const val = fieldValues[f.name];
        if (val !== "" && val !== null && val !== undefined) {
          obj[f.name] = f.type === "integer" || f.type === "number" ? Number(val) : val;
        }
      }
      setParams(Object.keys(obj).length ? JSON.stringify(obj, null, 2) : "");
      setShowRaw(true);
    } else {
      try {
        const parsed = JSON.parse(params.trim() || "{}");
        const next = {
          ...fieldValues
        };
        for (const f of bodyFields) {
          if (parsed[f.name] !== undefined) next[f.name] = String(parsed[f.name]);
        }
        setFieldValues(next);
      } catch (e) {}
      setShowRaw(false);
    }
  };
  const compute = async () => {
    setError("");
    setComputed(null);
    setResponse(null);
    try {
      if (!apiKey.trim()) throw new Error("API key is required");
      if (!apiSecret.trim()) throw new Error("API secret is required");
      let extraBodyParams = {};
      let queryString = "";
      if (useFieldsMode) {
        const qParams = {};
        for (const f of fields) {
          const val = fieldValues[f.name];
          const empty = val === "" || val === null || val === undefined;
          if (empty) {
            if (f.required) throw new Error('"' + f.name + '" is required');
            continue;
          }
          if (f.paramIn === "query" || f.paramIn === "path") {
            qParams[f.name] = String(val);
          } else {
            if (f.type === "integer" || f.type === "number") {
              const num = Number(val);
              if (isNaN(num)) throw new Error('"' + f.name + '" must be a number');
              extraBodyParams[f.name] = num;
            } else {
              extraBodyParams[f.name] = val;
            }
          }
        }
        if (Object.keys(qParams).length > 0) {
          queryString = "?" + Object.entries(qParams).map(function (kv) {
            return encodeURIComponent(kv[0]) + "=" + encodeURIComponent(kv[1]);
          }).join("&");
        }
      } else if (params.trim()) {
        try {
          extraBodyParams = JSON.parse(params.trim());
        } catch (e) {
          throw new Error("Body params is not valid JSON");
        }
      }
      const bodyObj = {
        request: path,
        nonce: Date.now(),
        nonceWindow: true
      };
      for (const k in extraBodyParams) bodyObj[k] = extraBodyParams[k];
      const bodyStr = JSON.stringify(bodyObj);
      const payload = b64(bodyStr);
      const signature = await hmacSha512Hex(apiSecret.trim(), payload);
      const result = {
        payload,
        signature,
        bodyStr,
        queryString
      };
      setComputed(result);
      return result;
    } catch (e) {
      setError(e && e.message ? e.message : String(e));
      return null;
    }
  };
  const send = async () => {
    setBusy(true);
    setResponse(null);
    try {
      const out = await compute();
      if (!out) return;
      const res = await fetch("/_mintlify/api/request", {
        method: "POST",
        headers: {
          "Content-Type": "application/json"
        },
        body: JSON.stringify({
          method: "post",
          url: getApiHost() + path + out.queryString,
          header: {
            "content-type": "application/json",
            "X-TXC-APIKEY": apiKey.trim(),
            "X-TXC-PAYLOAD": out.payload,
            "X-TXC-SIGNATURE": out.signature
          },
          body: JSON.parse(out.bodyStr),
          cookie: {},
          query: {}
        })
      });
      const text = await res.text();
      let status = res.status;
      let pretty = text;
      try {
        const json = JSON.parse(text);
        if (json.statusCode !== undefined) {
          status = json.statusCode;
          const raw = typeof json.body === "string" ? json.body : JSON.stringify(json.body);
          try {
            pretty = JSON.stringify(JSON.parse(raw), null, 2);
          } catch (e2) {
            pretty = raw;
          }
        } else {
          pretty = JSON.stringify(json, null, 2);
        }
      } catch (e2) {}
      setResponse({
        status,
        body: pretty
      });
    } catch (e) {
      setError(e && e.message ? e.message : String(e));
    } finally {
      setBusy(false);
    }
  };
  const copy = text => {
    if (navigator && navigator.clipboard) navigator.clipboard.writeText(text);
  };
  const headerRows = useMemo(function () {
    if (!computed) return [];
    return [{
      key: "X-TXC-APIKEY",
      value: apiKey.trim()
    }, {
      key: "X-TXC-PAYLOAD",
      value: computed.payload
    }, {
      key: "X-TXC-SIGNATURE",
      value: computed.signature
    }];
  }, [computed, apiKey]);
  const INPUT_CLS = "w-full rounded-xl border-standard px-3 py-2 text-sm font-mono bg-background-light dark:bg-background-dark outline-none focus:ring-1 focus:ring-[#3064E3]/40 text-gray-900 dark:text-gray-100 placeholder-gray-400 dark:placeholder-white/20";
  const SECTION_CLS = "rounded-2xl border border-zinc-200 dark:border-zinc-800";
  const SECTION_BTN_CLS_OPEN = "flex w-full pt-3.5 pb-3 px-3.5 items-center justify-between cursor-pointer hover:bg-gray-50 dark:hover:bg-white/5 transition-colors rounded-t-2xl";
  const SECTION_BTN_CLS_CLOSED = "flex w-full pt-3.5 pb-3 px-3.5 items-center justify-between cursor-pointer hover:bg-gray-50 dark:hover:bg-white/5 transition-colors rounded-2xl";
  const renderField = function (f) {
    return <div key={f.name}>
        <div className="flex items-center gap-1.5 mb-1 mt-2.5">
          <span className="text-xs font-mono font-medium text-gray-700 dark:text-gray-300">{f.name}</span>
          {f.required ? <span className="text-xs text-red-500 dark:text-red-400">required</span> : <span className="text-xs text-gray-400 dark:text-gray-500">optional</span>}
          <span className="text-xs text-gray-400 dark:text-gray-500 ml-auto">{f.type}{f.enum ? " · enum" : ""}</span>
        </div>
        {f.description && <div className="text-xs text-gray-400 dark:text-gray-500 mb-1">{f.description}</div>}
        {f.enum ? <select className={INPUT_CLS} value={fieldValues[f.name] || ""} onChange={function (e) {
      setFieldValue(f.name, e.target.value);
    }}>
            {!f.required && <option value="">— leave empty —</option>}
            {f.enum.map(function (v) {
      return <option key={v} value={v}>{v}</option>;
    })}
          </select> : <input type={f.type === "integer" || f.type === "number" ? "number" : "text"} className={INPUT_CLS} value={fieldValues[f.name] || ""} onChange={function (e) {
      setFieldValue(f.name, e.target.value);
    }} placeholder={f.example !== undefined ? String(f.example) : f.required ? f.name : "optional"} spellCheck={false} autoComplete="off" />}
      </div>;
  };
  return <div className="not-prose my-6 flex w-full flex-col bg-background-light dark:bg-background-dark border-standard rounded-2xl p-1.5">

      {}
      <div className="flex w-full items-center space-x-1.5 rounded-xl p-1.5 border-standard">

        {}
        <div className="flex items-center gap-1.5 flex-1 min-w-0">
          <span className="rounded-lg font-bold px-1.5 py-0.5 text-xs leading-5 shrink-0 bg-blue-400/20 text-blue-700 dark:text-blue-400">
            POST
          </span>
          <div className="flex items-center flex-1 min-w-0 text-sm font-mono overflow-hidden">
            {}
            <div className="relative shrink-0 flex items-center">
              <select value={baseUrl} onChange={function (e) {
    setBaseUrl(e.target.value);
  }} onClick={function (e) {
    e.stopPropagation();
  }} className="appearance-none bg-transparent outline-none font-mono text-sm text-gray-600 dark:text-gray-400 hover:text-gray-900 dark:hover:text-gray-200 transition-colors cursor-pointer pr-4">
                <option value="https://whitebit.com">https://whitebit.com</option>
                <option value="https://whitebit.eu">https://whitebit.eu</option>
              </select>
              <svg className="absolute right-0 top-1/2 -translate-y-1/2 pointer-events-none text-gray-400 dark:text-gray-500" width="10" height="10" viewBox="0 0 10 10" fill="none">
                <path d="M2 3.5L5 6.5L8 3.5" stroke="currentColor" strokeWidth="1.2" strokeLinecap="round" strokeLinejoin="round" />
              </svg>
            </div>
            {}
            <button type="button" title="Copy URL" onClick={function () {
    var url = baseUrl + path;
    if (navigator && navigator.clipboard) navigator.clipboard.writeText(url);
    setUrlCopied(true);
    setTimeout(function () {
      setUrlCopied(false);
    }, 1500);
  }} className="truncate text-left text-black dark:text-white transition-colors">
              {path}
            </button>
          </div>
        </div>

        <div className="flex items-center gap-1.5 shrink-0">
          {}
          <button type="button" title="Copy URL" onClick={function () {
    var url = getApiHost() + path;
    if (navigator && navigator.clipboard) navigator.clipboard.writeText(url);
    setUrlCopied(true);
    setTimeout(function () {
      setUrlCopied(false);
    }, 1500);
  }} className="flex items-center justify-center w-6 h-6 rounded-lg hover:bg-gray-200 dark:hover:bg-white/10 text-gray-400 dark:text-gray-500 transition-colors">
            {urlCopied ? <svg width="13" height="13" viewBox="0 0 13 13" fill="none">
                <path d="M2 7L5 10L11 3" stroke="#2AB673" strokeWidth="1.5" strokeLinecap="round" strokeLinejoin="round" />
              </svg> : <svg width="13" height="13" viewBox="0 0 13 13" fill="none">
                <rect x="4.5" y="1.5" width="7" height="8" rx="1.5" stroke="currentColor" strokeWidth="1.2" />
                <path d="M2 4.5H1.5A1 1 0 0 0 .5 5.5v6A1 1 0 0 0 1.5 12.5h6A1 1 0 0 0 8.5 11.5V11" stroke="currentColor" strokeWidth="1.2" strokeLinecap="round" />
              </svg>}
          </button>

          {}
          <button type="button" onClick={function () {
    setOpen(function (v) {
      return !v;
    });
  }} className="text-sm font-semibold px-3 py-1.5 rounded-lg bg-[#2AB673] text-white hover:bg-[#239660] active:bg-[#1e7d52] transition-colors hidden sm:inline-flex items-center gap-1.5 cursor-pointer">
            {open ? <>
                Close
                <svg width="12" height="12" viewBox="0 0 12 12" fill="none" className="shrink-0">
                  <path d="M2 9L6 5L10 9" stroke="currentColor" strokeWidth="1.5" strokeLinecap="round" strokeLinejoin="round" />
                </svg>
              </> : <>
                Try it
                <svg width="12" height="12" viewBox="0 0 12 12" fill="none" className="shrink-0">
                  <polygon points="2,1 11,6 2,11" fill="currentColor" />
                </svg>
              </>}
          </button>
        </div>
      </div>

      {}
      {open && <div className="mt-1.5 space-y-1.5">

          {}
          <div className={SECTION_CLS}>
            <button type="button" onClick={function () {
    setAuthOpen(function (v) {
      return !v;
    });
  }} className={authOpen ? SECTION_BTN_CLS_OPEN : SECTION_BTN_CLS_CLOSED}>
              <div className="flex items-center gap-x-1.5">
                <svg width="12" height="12" viewBox="0 0 12 12" fill="none" className="text-gray-400 dark:text-gray-500 transition-transform shrink-0" style={{
    transform: authOpen ? "rotate(90deg)" : "rotate(0deg)"
  }}>
                  <path d="M4 2.5L8 6L4 9.5" stroke="currentColor" strokeWidth="1.5" strokeLinecap="round" strokeLinejoin="round" />
                </svg>
                <span className="text-sm font-medium text-gray-800 dark:text-gray-200 leading-6">Authentication</span>
              </div>
            </button>
            {authOpen && <div className="px-3.5 pb-3.5 pt-0 border-t border-zinc-100 dark:border-zinc-800/60">
                <div className="flex items-center gap-1.5 mb-1 mt-2.5">
                  <span className="text-xs font-mono font-medium text-gray-700 dark:text-gray-300">X-TXC-APIKEY</span>
                  <span className="text-xs text-red-500 dark:text-red-400">required</span>
                  <span className="text-xs text-gray-400 dark:text-gray-500 ml-auto">string</span>
                </div>
                <input className={INPUT_CLS} value={apiKey} onChange={function (e) {
    setApiKey(e.target.value);
  }} placeholder="your-api-key" autoComplete="off" spellCheck={false} />

                <div className="flex items-center gap-1.5 mb-1 mt-2.5">
                  <span className="text-xs font-mono font-medium text-gray-700 dark:text-gray-300">API secret</span>
                  <span className="text-xs text-red-500 dark:text-red-400">required</span>
                  <span className="text-xs text-gray-400 dark:text-gray-500 ml-auto">string</span>
                </div>
                <div className="flex gap-1.5">
                  <input type={showSecret ? "text" : "password"} className={INPUT_CLS + " flex-1"} value={apiSecret} onChange={function (e) {
    setApiSecret(e.target.value);
  }} placeholder="your-api-secret" autoComplete="off" spellCheck={false} />
                  <button type="button" onClick={function () {
    setShowSecret(function (v) {
      return !v;
    });
  }} className="text-xs px-2.5 rounded-xl border-standard bg-background-light dark:bg-background-dark hover:bg-gray-50 dark:hover:bg-white/5 text-gray-500 dark:text-gray-400 shrink-0 transition-colors">
                    {showSecret ? "hide" : "show"}
                  </button>
                </div>
                <p className="text-xs text-gray-400 dark:text-gray-500 mt-1.5">
                  Credentials stay in memory only — never written to localStorage or cookies.
                </p>
              </div>}
          </div>

          {}
          <div className={SECTION_CLS}>
            <button type="button" onClick={function () {
    setParamsOpen(function (v) {
      return !v;
    });
  }} className={paramsOpen ? SECTION_BTN_CLS_OPEN : SECTION_BTN_CLS_CLOSED}>
              <div className="flex items-center gap-x-1.5">
                <svg width="12" height="12" viewBox="0 0 12 12" fill="none" className="text-gray-400 dark:text-gray-500 transition-transform shrink-0" style={{
    transform: paramsOpen ? "rotate(90deg)" : "rotate(0deg)"
  }}>
                  <path d="M4 2.5L8 6L4 9.5" stroke="currentColor" strokeWidth="1.5" strokeLinecap="round" strokeLinejoin="round" />
                </svg>
                <span className="text-sm font-medium text-gray-800 dark:text-gray-200 leading-6">Body</span>
              </div>
              {fields !== null && fields !== undefined && bodyFields.length > 0 && <button type="button" onClick={function (e) {
    e.stopPropagation();
    toggleRaw();
  }} className="text-xs text-gray-400 hover:text-gray-600 dark:hover:text-gray-300 underline mr-1">
                  {showRaw ? "form fields" : "edit as JSON"}
                </button>}
            </button>
            {paramsOpen && <div className="px-3.5 pb-3.5 pt-0 border-t border-zinc-100 dark:border-zinc-800/60">
                {queryFields.length > 0 && <div className="mb-1">
                    <p className="text-xs font-medium text-gray-500 dark:text-gray-400 mb-1 mt-2.5">Query parameters</p>
                    {queryFields.map(renderField)}
                  </div>}

                {useFieldsMode ? bodyFields.length > 0 ? <div>
                      {bodyFields.map(renderField)}
                      <p className="text-xs text-gray-400 dark:text-gray-500 mt-2">
                        <code className="font-mono">request</code>, <code className="font-mono">nonce</code>, <code className="font-mono">nonceWindow</code> added automatically.
                      </p>
                    </div> : <p className="text-xs text-gray-400 dark:text-gray-500 mt-2.5">
                      No body parameters required.{" "}
                      <code className="font-mono">request</code>, <code className="font-mono">nonce</code>, <code className="font-mono">nonceWindow</code> added automatically.
                    </p> : <div>
                    <p className="text-xs text-gray-400 dark:text-gray-500 mt-2.5 mb-1.5">
                      <code className="font-mono">request</code>, <code className="font-mono">nonce</code>, <code className="font-mono">nonceWindow</code> added automatically.
                    </p>
                    <textarea className={INPUT_CLS + " min-h-[80px] resize-y"} rows={4} value={params} onChange={function (e) {
    setParams(e.target.value);
  }} placeholder="{ &quot;market&quot;: &quot;BTC_USDT&quot; }" spellCheck={false} />
                  </div>}
              </div>}
          </div>

          {}
          <div className="flex flex-wrap items-center gap-1.5 px-0.5">
            <button type="button" onClick={send} disabled={busy} className="flex items-center justify-center px-3 h-9 text-sm font-medium rounded-xl hover:opacity-80 gap-1.5 transition-opacity disabled:opacity-50 disabled:pointer-events-none bg-[#3064E3] text-white">
              {busy ? <svg className="animate-spin w-4 h-4" viewBox="0 0 24 24" fill="none">
                  <circle className="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" strokeWidth="4" />
                  <path className="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8v8z" />
                </svg> : "Send request"}
            </button>
            <button type="button" onClick={compute} disabled={busy} className="flex items-center justify-center px-3 h-9 text-sm font-medium rounded-xl border-standard hover:bg-gray-50 dark:hover:bg-white/5 transition-colors disabled:opacity-50 disabled:pointer-events-none text-gray-700 dark:text-gray-300 bg-background-light dark:bg-background-dark">
              Compute headers
            </button>
          </div>

          {}
          {error && <div className="px-3.5 py-2.5 rounded-2xl border border-red-200 dark:border-red-900/40 bg-red-50 dark:bg-red-950/20 text-sm text-red-600 dark:text-red-400 break-words">
              {error}
            </div>}

          {}
          {computed && <div className={SECTION_CLS + " overflow-hidden"}>
              <div className="flex items-center justify-between pt-3 pb-2.5 px-3.5 border-b border-zinc-100 dark:border-zinc-800/60">
                <span className="text-sm font-medium text-gray-800 dark:text-gray-200">Computed headers</span>
              </div>
              <div className="px-3.5 pb-3.5">
                {headerRows.map(function (row) {
    return <div key={row.key} className="mt-2.5">
                      <div className="flex items-center justify-between mb-1">
                        <span className="text-xs font-mono text-gray-500 dark:text-gray-400">{row.key}</span>
                        <button type="button" onClick={function () {
      copy(row.value);
    }} className="text-xs px-2 py-0.5 rounded-lg border-standard hover:bg-gray-50 dark:hover:bg-white/5 text-gray-500 dark:text-gray-400 transition-colors">
                          copy
                        </button>
                      </div>
                      <input readOnly value={row.value} className="w-full rounded-xl border-standard px-3 py-2 text-xs font-mono bg-gray-50 dark:bg-white/[0.03] text-gray-500 dark:text-gray-400 outline-none select-all cursor-default" />
                    </div>;
  })}
                <details className="mt-2.5">
                  <summary className="text-xs text-gray-400 dark:text-gray-500 cursor-pointer select-none hover:text-gray-600 dark:hover:text-gray-300 transition-colors">
                    full request body
                  </summary>
                  <pre className="text-xs font-mono whitespace-pre-wrap break-all mt-2 text-gray-600 dark:text-gray-400 m-0">
                    {(function () {
    try {
      return JSON.stringify(JSON.parse(computed.bodyStr), null, 2);
    } catch (e) {
      return computed.bodyStr;
    }
  })()}
                  </pre>
                </details>
                {computed.queryString && <p className="text-xs text-gray-400 dark:text-gray-500 font-mono mt-1">
                    query: {computed.queryString}
                  </p>}
              </div>
            </div>}

          {}
          {response && <div className={SECTION_CLS + " overflow-hidden"}>
              <div className="flex items-center gap-2 pt-3 pb-2.5 px-3.5 border-b border-zinc-100 dark:border-zinc-800/60">
                <span className="text-sm font-medium text-gray-800 dark:text-gray-200">Response</span>
                <span className={"text-xs font-mono font-medium px-1.5 py-0.5 rounded-lg " + (response.status < 400 ? "bg-[#2AB673]/10 text-[#2AB673]" : "bg-red-100/50 dark:bg-red-400/10 text-red-600 dark:text-red-300")}>
                  {response.status}
                </span>
              </div>
              <pre className="text-xs font-mono whitespace-pre-wrap overflow-auto max-h-80 m-0 px-3.5 py-3 text-gray-700 dark:text-gray-300">
                {response.body}
              </pre>
            </div>}

        </div>}

    </div>;
};

export const RelatedResources = ({children}) => {
  const {useEffect, useRef, useState} = React;
  const ref = useRef(null);
  const [visible, setVisible] = useState(false);
  useEffect(() => {
    if (!ref.current) return;
    const el = ref.current;
    if (el.parentElement) {
      el.parentElement.appendChild(el);
    }
    setVisible(true);
  }, []);
  return <div ref={ref} className="related-resources" style={{
    marginTop: "2.5rem",
    paddingTop: "1.5rem",
    borderTop: "1px solid var(--border-color, #e5e7eb)",
    opacity: visible ? 1 : 0,
    transition: "opacity 0.15s ease-in"
  }}>
      <h2 style={{
    marginTop: 0
  }}>Related resources</h2>
      {children}
    </div>;
};

<WhitebitSigner path="/api/v4/market/fee" fields={signerFields} />

<RelatedResources>
  * [Query market fee for a single market](/api-reference/trading/query-market-fee-single) — the effective maker and taker fee for one market
  * [Retail Price Improvement (RPI)](/glossary#retail-price-improvement-rpi) — what the maker fee premium applies to
</RelatedResources>


## OpenAPI

````yaml openapi/private/http-trade-v4.yaml POST /api/v4/market/fee
openapi: 3.0.3
info:
  title: Private HTTP API V4 - Collateral Trading
  description: |
    WhiteBIT Private HTTP API V4 for collateral/margin trading operations.

    Base URL: https://whitebit.com

    All endpoints return time in Unix-time format.
    All endpoints return either a JSON object or array.
    For receiving responses from API calls please use http method POST.

    Authentication required for all endpoints.
  version: 4.0.0
  license:
    name: WhiteBIT Terms of Service
    url: https://whitebit.com/terms
servers:
  - url: https://whitebit.com
    description: WhiteBIT Global Server
  - url: https://whitebit.eu
    description: WhiteBIT EU Server
security:
  - ApiKeyAuth: []
    PayloadAuth: []
    SignatureAuth: []
tags:
  - name: Collateral Trading
    description: Endpoints for collateral/margin trading operations
  - name: Spot Trading
    description: Endpoints for spot trading operations
  - name: Market Fee
    description: Endpoints for querying trading fees
paths:
  /api/v4/market/fee:
    post:
      tags:
        - Market Fee
      summary: Query Market Fees
      description: >
        Returns the account's default spot and futures maker and taker fees,
        plus any custom per-market overrides.


        The `maker` and `taker` fields represent default spot trading fees. The
        `futures_maker` and `futures_taker` fields represent default futures
        trading fees. The `custom_fee` object lists per-market overrides, keyed
        by market name.


        The `rpi_maker_fee_premium` and `futures_rpi_maker_fee_premium` fields
        carry the [Retail Price Improvement
        (RPI)](/glossary#retail-price-improvement-rpi) premiums applied on top
        of the maker rates when RPI orders execute. The endpoint returns them
        for every account, regardless of whether the RPI order mode is enabled.


        The system calculates the effective futures fee as the lower value
        between the user-specific custom fee and the market-specific fee.


        When the market fee is lower than the assigned custom fee, the system
        returns the market fee.


        Example: If the custom futures taker fee equals `0.026` and the market
        fee equals `0.02`, the response returns `0.02`.
      operationId: getMarketFee
      parameters:
        - name: market
          in: query
          required: false
          description: >-
            Optional. Currently ignored by the API — all market fees are
            returned regardless of the value provided. Retained for backward
            compatibility. Example: BTC_USDT
          schema:
            type: string
            example: BTC_USDT
      responses:
        '200':
          description: Successful response
          content:
            application/json:
              schema:
                type: object
                x-fern-type-name: GetMarketFeeResponse
                properties:
                  error:
                    type: string
                    nullable: true
                    example: null
                  taker:
                    type: string
                    description: Taker fee percentage
                    example: '0.1'
                  maker:
                    type: string
                    description: Maker fee percentage
                    example: '0.1'
                  futures_taker:
                    type: string
                    description: >
                      Default effective futures taker fee percentage. The system
                      returns the lower value between the custom fee (if
                      assigned) and the default market fee.
                    example: '0.035'
                  futures_maker:
                    type: string
                    description: >
                      Default effective futures maker fee percentage. The system
                      returns the lower value between the custom fee (if
                      assigned) and the default market fee.
                    example: '0.01'
                  rpi_maker_fee_premium:
                    type: string
                    nullable: true
                    description: >
                      Additional maker fee percentage applied on top of the
                      `maker` rate when a [Retail Price Improvement
                      (RPI)](/glossary#retail-price-improvement-rpi) order
                      executes on a spot or margin market. The effective RPI
                      maker rate equals `maker` plus `rpi_maker_fee_premium`.
                      The field returns `null` when no premium is configured for
                      the account; a premium configured as zero is returned as
                      `"0"`, not `null`.
                    example: '0.015'
                  futures_rpi_maker_fee_premium:
                    type: string
                    nullable: true
                    description: >
                      Additional maker fee percentage applied on top of the
                      `futures_maker` rate when a [Retail Price Improvement
                      (RPI)](/glossary#retail-price-improvement-rpi) order
                      executes on a futures market. The effective futures RPI
                      maker rate equals `futures_maker` plus
                      `futures_rpi_maker_fee_premium`. The field returns `null`
                      when no premium is configured for the account; a premium
                      configured as zero is returned as `"0"`, not `null`.
                    example: '0.01'
                  custom_fee:
                    type: object
                    description: >
                      Per-market fee overrides, keyed by market name. Each value
                      contains the market's custom `taker` and `maker` rates.
                    additionalProperties:
                      type: object
                      properties:
                        taker:
                          type: string
                          description: Custom taker fee percentage for the market
                          example: '0.055'
                        maker:
                          type: string
                          description: Custom maker fee percentage for the market
                          example: '0.01'
                    example:
                      BTC_PERP:
                        taker: '0.055'
                        maker: '0.01'
                      ETH_PERP:
                        taker: '0.055'
                        maker: '0.01'
        '422':
          description: Validation failed
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
      security:
        - ApiKeyAuth: []
          PayloadAuth: []
          SignatureAuth: []
components:
  schemas:
    ErrorResponse:
      type: object
      properties:
        code:
          type: integer
          description: Error code
          example: 30
        message:
          type: string
          description: Error message
          example: Validation failed
        errors:
          type: object
          additionalProperties:
            type: array
            items:
              type: string
          description: Detailed error information
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: X-TXC-APIKEY
      description: The public WhiteBIT API key.
    PayloadAuth:
      type: apiKey
      in: header
      name: X-TXC-PAYLOAD
      description: Base64-encoded JSON request body.
    SignatureAuth:
      type: apiKey
      in: header
      name: X-TXC-SIGNATURE
      description: >-
        HMAC-SHA512 signature of the payload, hex-encoded. Computed as
        hex(HMAC-SHA512(payload, api_secret)).

````