Anything in.
Anything out.
You control
the middle.

# Send a one-off broadcast to all confirmed subscribers
curl -X POST https://api.rssemit.com/v1/broadcasts \
  -H "Authorization: Bearer $EMIT_KEY" \
  -H "Content-Type: application/json" \
  -d '{
        "subject":   "Shipping Emit v1.4",
        "body_html": "<h1>We shipped.</h1>",
        "feed_id":   "8Hk2q9f1-…"
      }'

# → { "id": "8Hk2q9f1…", "status": "queued", "recipient_count": 4218 }

// node 20 · zero deps
const r = await fetch("https://api.rssemit.com/v1/broadcasts", {
  method: "POST",
  headers: {
    "Authorization": `Bearer ${process.env.EMIT_KEY}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    subject:   "Shipping Emit v1.4",
    body_html: "<h1>We shipped.</h1>",
    feed_id:   "8Hk2q9f1-…",
  }),
});

const { id, recipient_count } = await r.json();
console.log(`queued ${recipient_count} to ${id}`);

# python 3.11 · stdlib only
import os, json, urllib.request as u

req = u.Request(
    "https://api.rssemit.com/v1/broadcasts",
    method="POST",
    headers={
        "Authorization": f"Bearer {os.environ['EMIT_KEY']}",
        "Content-Type": "application/json",
    },
    data=json.dumps({
        "subject":   "Shipping Emit v1.4",
        "body_html": "<h1>We shipped.</h1>",
        "feed_id":   "8Hk2q9f1-…",
    }).encode(),
)

res = json.loads(u.urlopen(req).read())
print(f"queued {res['recipient_count']} to {res['id']}")

// go 1.22
body, _ := json.Marshal(map[string]any{
    "subject":   "Shipping Emit v1.4",
    "body_html": "<h1>We shipped.</h1>",
    "feed_id":   "8Hk2q9f1-…",
})

req, _ := http.NewRequest("POST",
    "https://api.rssemit.com/v1/broadcasts",
    bytes.NewReader(body))
req.Header.Set("Authorization", "Bearer " + os.Getenv("EMIT_KEY"))
req.Header.Set("Content-Type", "application/json")

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

# ruby 3.3
require "net/http"; require "json"

uri = URI("https://api.rssemit.com/v1/broadcasts")
req = Net::HTTP::Post.new(uri, {
  "Authorization" => "Bearer #{ENV['EMIT_KEY']}",
  "Content-Type"  => "application/json",
})
req.body = {
  subject:   "Shipping Emit v1.4",
  body_html: "<h1>We shipped.</h1>",
  feed_id:   "8Hk2q9f1-…",
}.to_json

res = Net::HTTP.start(uri.host, uri.port, use_ssl: true) { |h| h.request(req) }
puts JSON.parse(res.body)["id"]