Pandoc Bridge

A document format conversion service using Pandoc, supporting both REST (OpenAPI 3.1) and MCP (Model Context Protocol) interfaces.

Features

• 40+ Format Support: Convert between Markdown, HTML, LaTeX, DOCX, PDF, and many more formats
• Dual Protocol: REST API with OpenAPI documentation and MCP server for AI assistants
• Bearer Token Auth: Shared JWT authentication across both protocols
• Streaming Support: Server-Sent Events for progress tracking
• Docker Ready: Production-ready containerization

Quick Start

Using Docker Compose

# Start the service
docker-compose up -d

# Check health
curl http://localhost:8000/health

Local Development

# Install dependencies
pip install -e ".[dev]"

# Run the server
uvicorn src.main:app --reload

# Or use the CLI
pandoc-bridge

API Endpoints

Public Endpoints

Endpoint	Description
GET /	Service information
GET /health	Health check with Pandoc version
GET /api/v1/formats	List supported formats
GET /docs	Swagger UI documentation

Protected Endpoints (Require Bearer Token)

Endpoint	Description
POST /api/v1/convert/text	Convert text content
POST /api/v1/convert/file	Convert uploaded file
POST /api/v1/convert/stream	Stream conversion with SSE

MCP Endpoint

Endpoint	Description
POST /mcp	MCP Streamable HTTP transport

Usage Examples

Convert Text (REST)

# Get a token (for development, tokens are pre-configured)
TOKEN="your-jwt-token"

# Convert Markdown to HTML
curl -X POST http://localhost:8000/api/v1/convert/text \
  -H "Authorization: Bearer $TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "content": "# Hello World\n\nThis is **bold** text.",
    "from_format": "markdown",
    "to_format": "html"
  }'

Convert File (REST)

curl -X POST http://localhost:8000/api/v1/convert/file \
  -H "Authorization: Bearer $TOKEN" \
  -F "file=@document.md" \
  -F "to_format=docx" \
  -o converted.docx

Using with Claude Desktop (MCP)

Add to your Claude Desktop configuration:

{
  "mcpServers": {
    "pandoc-bridge": {
      "command": "npx",
      "args": ["-y", "mcp-remote", "http://localhost:8000/mcp"]
    }
  }
}

Or with authentication:

{
  "mcpServers": {
    "pandoc-bridge": {
      "command": "npx",
      "args": [
        "-y", "mcp-remote",
        "--header", "Authorization: Bearer ${PANDOC_TOKEN}",
        "http://localhost:8000/mcp"
      ]
    }
  }
}

MCP Tools

Tool	Description
convert_text	Convert text between formats
convert_file_base64	Convert base64-encoded files
list_formats	Get supported formats
get_service_info	Get version information

MCP Resources

Resource	Description
formats://list	JSON list of supported formats
formats://matrix	Format conversion compatibility matrix

Authentication

Scopes

Scope	Description
formats:read	Query formats (public)
convert:text	Text conversion
convert:file	File conversion
admin	Full access

Token Format

{
    "sub": "client-id",
    "scopes": ["formats:read", "convert:text", "convert:file"],
    "exp": 1735600000,
    "iat": 1735513600
}

Configuration

Environment variables:

Variable	Default	Description
HOST	0.0.0.0	Server host
PORT	8000	Server port
LOG_LEVEL	INFO	Logging level
JWT_SECRET_KEY	(required)	JWT signing key (min 32 chars)
JWT_EXPIRE_HOURS	24	Token expiration time
MAX_FILE_SIZE_MB	50	Maximum file size
CONVERSION_TIMEOUT	60	Conversion timeout in seconds

Development

Run Tests

# Install dev dependencies
pip install -e ".[dev]"

# Run tests
pytest

# Run with coverage
pytest --cov=src

Lint Code

# Run ruff
ruff check src tests
ruff format src tests

Type Check

mypy src

Architecture

┌─────────────────────────────────────────────────────┐
│                    FastAPI App                       │
│                   (Port 8000)                        │
├─────────────────────┬───────────────────────────────┤
│   REST API          │         MCP Server            │
│   /api/v1/*         │         /mcp                  │
│   (OpenAPI 3.1)     │    (Streamable HTTP)          │
├─────────────────────┴───────────────────────────────┤
│              Shared Auth (Bearer Token)              │
├─────────────────────────────────────────────────────┤
│              ConversionService (Core)                │
├─────────────────────────────────────────────────────┤
│                    Pandoc CLI                        │
└─────────────────────────────────────────────────────┘

License

MIT License - see LICENSE for details.