The full upstream README, mirrored here for reference. Install config, tool schemas, adoption signals, and an original overview live on the Flatmark listing page.
PDF, Word, PowerPoint and Excel to Markdown
flatmark converts PDF, Word, PowerPoint, Excel and HTML to Markdown over a REST API and an MCP server. Files up to 8 MB convert in one call with MarkItDown. Files up to 25 MB and 200 pages go through a queue that runs Docling with OCR and table detection. The queue returns Markdown and a JSON structure file, by polling or a signed webhook. The servers are in Germany. The free plan has 100 credits a month and needs no card.
Streamable-HTTP endpoint: https://api.flatmark.dev/mcp/ — the anonymous
tier works without a key; an API key raises the limits.
Claude Code:
Cursor / Windsurf / Cline / Claude Desktop:
One-click installs for every client: https://flatmark.dev/connect
Base URL https://api.flatmark.dev/ — authenticate with an X-API-Key header;
anonymous calls work at a lower rate limit.