React Native

Submit from React Native

const FORM_ID = "FORM_UUID";
const INGEST_SECRET = process.env.EXPO_PUBLIC_MUXFORMS_INGEST_SECRET; // proxy via your API in prod

export async function submitContact(email: string, message: string) {
  const res = await fetch(`https://www.muxforms.com/api/v1/forms/${FORM_ID}/submit`, {
    method: "POST",
    headers: {
      "Content-Type": "application/json",
      Authorization: `Bearer ${INGEST_SECRET}`,
    },
    body: JSON.stringify({ email, message, platform: "ios", _hp: "" }),
  });
  if (res.status === 422) {
    const err = await res.json();
    throw err;
  }
  if (!res.ok) throw new Error("Submit failed");
}

Security note

Do not ship production ingest secrets in client binaries when avoidable—POST from your backend or Expo API route with the secret in environment variables.