@appmonster/mcp-ofd

OFD Reader MCP — Chinese e-invoices (发票) and documents

OFD (GB/T 33190) is China's fixed-layout document format — every e-invoice (电子发票 / 数电票), many official documents and bank statements. Most agents can't open it. This server can: text in reading order, and structured invoice fields.

npx -y @appmonster/mcp-ofd

Hosted (no install, pass url or base64): https://okagent.kr/api/mcp · REST https://okagent.kr/api/tools.

Tool	What it does
ofd_invoice_fields	Invoice number/code, issue date, buyer & seller name and tax ID, amount before tax, tax, total, check code — from the invoice's embedded tags, else from printed labels
ofd_to_text	Full text, page by page, lines rebuilt from glyph positions (template pages included)
ofd_info	Title, creator, dates, page count, signed or not, attachments

Pass exactly one of path, url, base64. Safe by design: only XML parts are inflated (32 MB per part, 96 MB total), XML entity declarations are refused, nothing is written.

Claude Desktop config:

{ "mcpServers": { "ofd": { "command": "npx", "args": ["-y", "@appmonster/mcp-ofd"] } } }

Part of K-MCP. MIT.