4-koma & manga generation

One line or a synopsis in, lettered 4-koma or manga pages out. Async job with status and webhook.

The BunCho API turns one line, a synopsis or a script into finished creative work: a written novel episode, lettered 4-koma / manga images, a vertical short video, a story bible or a continuity report. It is built for Japanese stories and manga and writes in any language.

Sign in with Google and get an API key

Trial DREAM on sign-up. Then buy a DREAM pack with Stripe. No subscription needed.

1. 1. Sign in (Google)
2. 2. Create an API key
3. 3. Buy DREAM (Stripe)
4. 4. Call the API

Launch campaign: 25% off API usage until 2026-12-31. A price never goes below cost x 1.3.

Example

curl https://bun-cho.work/studio/api/v1/manga \
  -H "Authorization: Bearer $BUNCHO_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d '{"text": "Two people meet again at a rainy station", "format": "4koma"}'

# 202 -> {"id": "call_...", "status": "running"}
curl https://bun-cho.work/studio/api/v1/jobs/call_... -H "Authorization: Bearer $BUNCHO_API_KEY"

Pricing

Endpoints

Base URL: https://bun-cho.work/studio/api/v1 · OpenAPI spec · pricing.json

SDK examples

Python (OpenAI SDK)

from openai import OpenAI

client = OpenAI(base_url="https://bun-cho.work/studio/api/v1", api_key="bk_live_...")
r = client.chat.completions.create(
    model="buncho-creative",
    messages=[{"role": "user", "content": "Two people meet again at a rainy station"}],
)
print(r.choices[0].message.content)

JavaScript

const r = await fetch("https://bun-cho.work/studio/api/v1/novel", {
  method: "POST",
  headers: { Authorization: `Bearer ${process.env.BUNCHO_API_KEY}`, "Content-Type": "application/json" },
  body: JSON.stringify({"mode": "episode", "text": "Two people meet again at a rainy station", "length": 1000, "language": "auto"}),
});
console.log((await r.json()).text);

Use from Claude / ChatGPT (MCP)

Claude Code

claude mcp add --transport http buncho https://bun-cho.work/mcp

Claude Desktop / MCP clients

{
  "mcpServers": {
    "buncho": {
      "type": "http",
      "url": "https://bun-cho.work/mcp"
    }
  }
}

Limits

Per key by default: 30 requests per minute, 2 concurrent jobs, 3,000 DREAM per day. You can lower them in settings. When the BunCho model is busy you get HTTP 429 with Retry-After; we never switch you to a pricier model silently. Not enough DREAM returns HTTP 402 with a purchase URL.

Languages

Text endpoints write in any language with the language parameter (default: the language of the input). Manga dialogue and video subtitles: ja, en, es, pt, ko, zh-Hans, zh-Hant.

How it differs from a plain LLM API

Plain LLM APIs such as OpenAI or Anthropic return text tokens; prompts, image generation, lettering and video editing are up to you. The BunCho API returns the finished result (an episode, lettered 4-koma images, a rendered vertical video), tuned for Japanese stories and manga, and is billed per result in DREAM.

Content rules and rights

Same rules as BunCho: no sexual content involving minors, no sexual or defamatory content about real people, no instructions for illegal acts. Keys that keep sending blocked requests are suspended. You own your outputs under the BunCho terms; label them as AI-generated where required. API terms

FAQ

Sign in with Google and get an API key

All endpoints

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