flatmark

dev.flatmarkv1.0.0Updated Sep 28, 2026

Document to Markdown MCP server: PDF, Word, PowerPoint, Excel and HTML, with OCR for large files.

VerifiedStreamable HTTPWeb executableFiles & StorageKnowledge & Memory

Overview

AI-generated overview

Converts PDF, Word, PowerPoint, Excel and HTML files to Markdown so an assistant can read and reuse their content.

What it does
flatmark takes a document and returns it as Markdown, using MarkItDown for files up to 8 MB in a single call. Larger files, up to 25 MB and 200 pages, are sent through a queue that runs Docling with OCR and table detection, returning both Markdown and a JSON structure file by polling or a signed webhook. It is reached over a REST API and a streamable-HTTP MCP endpoint.
When to use it
Use it when an assistant needs to ingest documents whose content it cannot otherwise extract, such as scanned PDFs, Office files or HTML pages. It suits one-off conversions of a single file as well as queued processing of larger, OCR-heavy documents.
Requirements
A remote streamable-HTTP endpoint at plus network access; nothing runs locally. No account is needed for the anonymous tier, which has lower rate limits; an optional X-API-Key header raises those limits. The free plan gives 100 credits a month and needs no card.
Before you install
Documents are uploaded to third-party servers in Germany, so anything you convert leaves the machine and is processed externally. The optional X-API-Key header is a secret; an anonymous tier works without it but at a lower rate limit. Queued conversions may finish via a webhook, and paid plans are listed on the pricing page.

Installation

In SourceWeft

  1. Open flatmark in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "flatmark": {
      "type": "http",
      "url": "https://api.flatmark.dev/mcp/"
    }
  }
}

README

flatmark

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.

Links

MCP server

Streamable-HTTP endpoint: https://api.flatmark.dev/mcp/ — the anonymous tier works without a key; an API key raises the limits.

Claude Code:

sh
claude mcp add --transport http flatmark https://api.flatmark.dev/mcp/

Cursor / Windsurf / Cline / Claude Desktop:

json
{  "mcpServers": {    "flatmark": {      "url": "https://api.flatmark.dev/mcp/"    }  }}

One-click installs for every client: https://flatmark.dev/connect

API

Base URL https://api.flatmark.dev/ — authenticate with an X-API-Key header; anonymous calls work at a lower rate limit.

Source: README.md at commit 3a4b25d

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Version history

1
  1. v1.0.0LatestSep 28, 2026