Makernice APIドキュメント：クイックスタート

curl https://api.makernice.com/v1/generations/quote \
  -H "Authorization: Bearer $MAKERNICE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"seedance-2.5","mode":"t2v","prompt":"温室の中をゆっくり進むドリーショット","duration":5,"resolution":"720p"}'

# → （値は説明用）{ "id": "qt_…", "amount": "500000", "expires_at": "…", "facts": { "quantity": 5, … } }

curl https://api.makernice.com/v1/generations \
  -H "Authorization: Bearer $MAKERNICE_API_KEY" \
  -H "Idempotency-Key: 7c1e9a2b-order-1842" \
  -H "Content-Type: application/json" \
  -d '{"quote_id":"qt_…","input":{"model":"seedance-2.5","mode":"t2v","prompt":"温室の中をゆっくり進むドリーショット","duration":5,"resolution":"720p"}}'

# → 202 { "id": "gen_…", "status": "queued", "billing": "held", … }

curl https://api.makernice.com/v1/generations/gen_… \
  -H "Authorization: Bearer $MAKERNICE_API_KEY"

# status: queued → generating → moderating → succeeded | failed | canceled
# 成功したら: outputs[0].url に APIキー付きで GET すると、ファイルへの 302 が返ります

curl -L -o video.mp4 https://api.makernice.com/v1/generations/gen_…/outputs/0 \
  -H "Authorization: Bearer $MAKERNICE_API_KEY"

import os
import time
import uuid
from decimal import Decimal

import requests

API = "https://api.makernice.com/v1"
ORIGIN = "https://api.makernice.com"
HEADERS = {"Authorization": f"Bearer {os.environ['MAKERNICE_API_KEY']}"}
TIMEOUT_SECONDS = 30
POLL_INTERVAL_SECONDS = 5
MAX_WAIT_SECONDS = 30 * 60
FINAL = {"succeeded", "failed", "canceled"}


def call(method, path, headers=None, **kwargs):
    # Waits out 429 (rate_limited, concurrency_limit_reached) using Retry-After; raises on any other error.
    for _ in range(5):
        r = requests.request(method, API + path, headers={**HEADERS, **(headers or {})}, timeout=TIMEOUT_SECONDS, **kwargs)
        if r.status_code == 429:
            time.sleep(int(r.headers.get("Retry-After", "5")))
            continue
        if not r.ok:
            raise RuntimeError(f"{method} {path} -> {r.status_code}: {r.text}")
        return r.json()
    raise RuntimeError(f"{method} {path}: still rate limited")


job = {
    "model": "seedance-2.5",
    "mode": "t2v",
    "prompt": "A slow dolly shot through a greenhouse",
    "duration": 5,
    "resolution": "720p",
}

# 1. Quote: the exact amount, locked for 12 minutes
quote = call("POST", "/generations/quote", json=job)
usd = Decimal(quote["amount"]).scaleb(-6)  # micro-USD integer string -> dollars, no float rounding
print(f"Quoted ${usd} (price list v{quote['price_version']}), valid until {quote['expires_at']}")

# 2. Create: same input + quote_id. A retry with the same Idempotency-Key returns the same generation
idempotency_key = str(uuid.uuid4())
gen = call("POST", "/generations", json={"quote_id": quote["id"], "input": job}, headers={"Idempotency-Key": idempotency_key})

# 3. Poll: queued -> generating -> moderating -> succeeded | failed | canceled (checking: keep polling)
deadline = time.monotonic() + MAX_WAIT_SECONDS
while gen["status"] not in FINAL:
    if time.monotonic() > deadline:
        raise SystemExit(f"{gen['id']} is still {gen['status']}; poll it again later")
    time.sleep(POLL_INTERVAL_SECONDS)
    gen = call("GET", f"/generations/{gen['id']}")

if gen["status"] != "succeeded":
    # billing is "released": the hold went back to your balance
    raise SystemExit(f"{gen['status']}, billing {gen['billing']}: {gen['error']}")

# 4. Download: outputs[].url is relative to the API origin and redirects (302) to the file
output = gen["outputs"][0]
if output["state"] == "blocked":
    raise SystemExit("Output blocked by moderation (the run is charged); contact support for a manual review")
r = requests.get(ORIGIN + output["url"], headers=HEADERS, timeout=120)  # requests drops Authorization on the redirect
r.raise_for_status()
with open("output.mp4", "wb") as f:
    f.write(r.content)
print(f"Saved output.mp4, charged ${Decimal(gen['amount']).scaleb(-6)}")

// Node.js 18+ (built-in fetch, no packages). Save as quickstart.mjs and run: node quickstart.mjs
import { randomUUID } from "node:crypto";
import { writeFile } from "node:fs/promises";

const API = "https://api.makernice.com/v1";
const ORIGIN = "https://api.makernice.com";
const HEADERS = { Authorization: `Bearer ${process.env.MAKERNICE_API_KEY}` };
const TIMEOUT_MS = 30_000;
const POLL_INTERVAL_MS = 5_000;
const MAX_WAIT_MS = 30 * 60 * 1000;
const FINAL = new Set(["succeeded", "failed", "canceled"]);

const sleep = (ms) => new Promise((resolve) => setTimeout(resolve, ms));
// micro-USD integer string -> dollars, no float rounding
const usd = (micro) => `${BigInt(micro) / 1_000_000n}.${(BigInt(micro) % 1_000_000n).toString().padStart(6, "0")}`;

class Stop extends Error {}

async function call(method, path, { body, headers } = {}) {
  // Waits out 429 (rate_limited, concurrency_limit_reached) using Retry-After; throws on any other error.
  for (let attempt = 0; attempt < 5; attempt++) {
    const r = await fetch(API + path, { signal: AbortSignal.timeout(TIMEOUT_MS),
      method,
      headers: { ...HEADERS, ...(body ? { "Content-Type": "application/json" } : {}), ...headers },
      body: body ? JSON.stringify(body) : undefined,
    });
    if (r.status === 429) {
      await sleep(Number(r.headers.get("Retry-After") ?? "5") * 1000);
      continue;
    }
    if (!r.ok) throw new Stop(`${method} ${path} -> ${r.status}: ${await r.text()}`);
    return r.json();
  }
  throw new Stop(`${method} ${path}: still rate limited`);
}

async function main() {
  const job = {
    "model": "seedance-2.5",
    "mode": "t2v",
    "prompt": "A slow dolly shot through a greenhouse",
    "duration": 5,
    "resolution": "720p",
  };

  // 1. Quote: the exact amount, locked for 12 minutes
  const quote = await call("POST", "/generations/quote", { body: job });
  console.log(`Quoted $${usd(quote.amount)} (price list v${quote.price_version}), valid until ${quote.expires_at}`);

  // 2. Create: same input + quote_id. A retry with the same Idempotency-Key returns the same generation
  const idempotencyKey = randomUUID();
  let gen = await call("POST", "/generations", { body: { quote_id: quote.id, input: job }, headers: { "Idempotency-Key": idempotencyKey } });

  // 3. Poll: queued -> generating -> moderating -> succeeded | failed | canceled (checking: keep polling)
  const deadline = Date.now() + MAX_WAIT_MS;
  while (!FINAL.has(gen.status)) {
    if (Date.now() > deadline) throw new Stop(`${gen.id} is still ${gen.status}; poll it again later`);
    await sleep(POLL_INTERVAL_MS);
    gen = await call("GET", `/generations/${gen.id}`);
  }

  if (gen.status !== "succeeded") {
    // billing is "released": the hold went back to your balance
    throw new Stop(`${gen.status}, billing ${gen.billing}: ${JSON.stringify(gen.error)}`);
  }

  // 4. Download: outputs[].url is relative to the API origin and answers 302 with a signed file URL.
  //    Follow it yourself so your API key is never sent to the file host.
  const [output] = gen.outputs;
  if (output.state === "blocked") throw new Stop("Output blocked by moderation (the run is charged); contact support for a manual review");
  const hop = await fetch(ORIGIN + output.url, { headers: HEADERS, redirect: "manual", signal: AbortSignal.timeout(TIMEOUT_MS) });
  const location = hop.headers.get("Location");
  if (hop.status < 300 || hop.status > 399 || !location) throw new Stop(`GET ${output.url} -> ${hop.status}`);
  const file = await fetch(new URL(location, ORIGIN + output.url), { signal: AbortSignal.timeout(120_000) });
  if (!file.ok) throw new Stop(`download -> ${file.status}`);
  await writeFile("output.mp4", Buffer.from(await file.arrayBuffer()));
  console.log(`Saved output.mp4, charged $${usd(gen.amount)}`);
}

main().catch((err) => {
  console.error(err instanceof Stop ? err.message : err);
  process.exit(1);
});