# DMAI EPUB Structural Preflight (`dmai/dmai-epub-structural-preflight`) Actor

Checks EPUB ZIP packaging and structural references; repairs only valid mimetype ordering/compression. No content, layout, accessibility, rights, retailer or reading-system certification.

- **URL**: https://apify.com/dmai/dmai-epub-structural-preflight.md
- **Developed by:** [Eric Gordon](https://apify.com/dmai) (community)
- **Stats:** 2 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

from $100.00 / 1,000 completed reports

This Actor is paid per event. You are not charged for the Apify platform usage, but only a fixed price for specific events.

Learn more: https://docs.apify.com/actors/running/actors-in-store.md#pay-per-event

## What's an Apify Actor?

An Actor is a serverless cloud program that runs on the Apify platform. It has two run modes.
In Batch mode, an Actor accepts a well-defined JSON input, performs an action which can take anything from a few seconds to a few hours,
and optionally produces a well-defined JSON output, datasets with results, or files in key-value store.
In Standby mode, an Actor provides a web server which can be used as a website, API, or an MCP server.

Apify vocabulary and the platform model are defined once, in the agent quickstart at https://apify.com/agents.md.

## How to integrate an Actor?

If asked about integration, you help developers integrate Actors into their projects.
You adapt to their stack and deliver integrations that are safe, well-documented, and production-ready.

Do not guess an integration path. Every one of them is in the agent quickstart at https://apify.com/agents.md: the Apify MCP server, Agent Skills with the Apify CLI, the JavaScript and Python clients, the REST API, and the account-free path for an agent with no human to sign in. It also carries the rule on stating cost before the first paid run.

For examples already wired to this Actor's own input schema, see the [API](#api) section below.

Each client library has reference documentation the quickstart does not restate: [JavaScript/TypeScript](https://docs.apify.com/api/client/js/docs.md) (`npm install apify-client`) and [Python](https://docs.apify.com/api/client/python/docs.md) (`pip install apify-client`).

# README

## DMAI EPUB Structural Preflight

Check an EPUB container without rendering or rewriting publication content. Supply the authorized EPUB as base64 in epubBase64; set mode to repairPackaging only when you want the optional reversible packaging rewrite.

The only repair is a package rewrite when a valid existing mimetype entry is not first, is compressed, or has ZIP extra fields. The original is never overwritten. Content defects prevent repair.

Limits: 20 MiB compressed input, 100 MiB expanded, 2,000 archive entries, 4 MiB per inspected XML file. Unsafe paths, duplicate ZIP names, ZIP encryption, unsupported compression and DTD/entity-bearing XML are rejected.

The report contains structural locations and hashes, not publication text. Layout, CSS, accessibility, DRM, rights, retailer acceptance and reading-system behavior are outside scope. This is not EPUBCheck certification.

Delivery: open Output or Storage for the REPORT JSON record and, when eligible and requested, REPAIRED_EPUB. One completed report is also written to the dataset.

Pricing: $0.10 per completed report, including buyer-readable refusal reports, plus a $0.00005 Actor-start event per GB of memory (minimum one event). Platform usage is included. The minimum permitted buyer run budget is $0.10005.

Privacy: original input remains in the private run INPUT store. Hashing report values does not remove or encrypt retained input. Supply only data you are authorized to process.

Support: preserve the run ID and use a redacted synthetic example to report a reproducible defect. Billing/refund requests follow Apify’s platform process. No custom book production or manual file handling is included.

# Actor input Schema

## `epubBase64` (type: `string`):

Base64-encoded EPUB, at most 20 MiB decoded. Use files you are authorized to process. Prefilled content is a synthetic demonstration; replace it with your authorized file before a real job.

## `mode` (type: `string`):

Check structure or attempt conservative packaging-only repair, without content changes.

## Actor input object example

```json
{
  "epubBase64": "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",
  "mode": "check"
}
```

# Actor output Schema

## `report` (type: `string`):

No description

## `repaired` (type: `string`):

No description

# API

You can run this Actor programmatically using our API. Below are code examples in JavaScript, Python, and CLI, as well as the OpenAPI specification and MCP server setup.

## JavaScript example

```javascript
import { ApifyClient } from 'apify-client';

// Initialize the ApifyClient with your Apify API token
// Replace the '<YOUR_API_TOKEN>' with your token
const client = new ApifyClient({
    token: '<YOUR_API_TOKEN>',
});

// Prepare Actor input
const input = {
    "epubBase64": "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"
};

// Run the Actor and wait for it to finish
const run = await client.actor("dmai/dmai-epub-structural-preflight").call(input);

// Fetch and print Actor results from the run's dataset (if any)
console.log('Results from dataset');
console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`);
const { items } = await client.dataset(run.defaultDatasetId).listItems();
items.forEach((item) => {
    console.dir(item);
});

// 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/js/docs

```

## Python example

```python
from apify_client import ApifyClient

# Initialize the ApifyClient with your Apify API token
# Replace '<YOUR_API_TOKEN>' with your token.
client = ApifyClient("<YOUR_API_TOKEN>")

# Prepare the Actor input
run_input = { "epubBase64": "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" }

# Run the Actor and wait for it to finish
run = client.actor("dmai/dmai-epub-structural-preflight").call(run_input=run_input)

# Fetch and print Actor results from the run's dataset (if there are any)
print(f"💾 Check your data here: https://console.apify.com/storage/datasets/{run.default_dataset_id}")
for item in client.dataset(run.default_dataset_id).iterate_items():
    print(item)

# 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start

```

## CLI example

```bash
echo '{
  "epubBase64": "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"
}' |
apify call dmai/dmai-epub-structural-preflight --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "type": "http",
            "url": "https://mcp.apify.com/?tools=fetch-actor-details,dmai/dmai-epub-structural-preflight"
        }
    }
}
```

The hosted server signs you in with OAuth on first connect, so no API token belongs in this config. Clients without OAuth support can send an `Authorization: Bearer <APIFY_API_TOKEN>` header instead, using a token from API & Integrations in Apify Console (https://console.apify.com/settings/integrations).

## OpenAPI specification

Download the OpenAPI definition: https://api.apify.com/v2/actors/Do57TyVidFJCJLRlT/builds/xbC1lYfeLh2Zj6izU/openapi.json