> ## Documentation Index
> Fetch the complete documentation index at: https://superdoc-caio-pizzol-docs-ai-core-preset.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Our Backend Services

Your documents are never persisted. Every API call is stateless: process and forget. That's the point.

Convert contracts to PDF. Add signatures to agreements. Merge quarterly reports. Everything preserves-tracked changes, complex tables, nested lists, headers. Real document operations via REST API.

## Why stateless matters

Enterprise documents contain sensitive data. NDAs, financial reports, legal contracts. SuperDoc's API processes them in memory and returns results immediately. No storage. No persistence. No risk.

## Base URL

```
https://api.superdoc.dev
```

## Authentication

Bearer token in every request (except `/v1/health`):

```bash theme={null}
Authorization: Bearer sd_sk_abc123xyz789
```

## What's working now

**Convert** - DOCX to PDF with perfect fidelity. That 50-page contract with tracked changes? Converts flawlessly.

```bash theme={null}
POST /v1/convert?from=docx
```

**Annotate** - Programmatically populate fields in your DOCX templates. Insert text, images, signatures, and tables.

```bash theme={null}
POST /v1/annotate
```

**Sign** - Add cryptographic signatures to PDFs and DOCX documents with full audit trail support.

```bash theme={null}
POST /v1/sign
```

**Verify** - Validate the authenticity and integrity of signed PDFs.

```bash theme={null}
POST /v1/verify
```

## What's coming

`/merge` - Combine documents with formatting intact. <br />

## Built for real documents

This isn't a wrapper around LibreOffice. SuperDoc uses custom document processing that handles:

* Tables spanning multiple pages
* Tracked changes from multiple reviewers
* Embedded images and charts
* Complex numbered lists and cross-references
* Headers/footers with dynamic fields

Your Word documents work because SuperDoc was built for Word documents. Not markdown. Not HTML: actual DOCX files.

## Resources

**[Status Page](https://status.superdoc.dev)** - Uptime and incidents\
**[GitHub](https://github.com/superdoc-dev/superdoc)** - Examples and issues