flatmark

dev.flatmarkv1.0.0Updated Oct 1, 2026

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

VerifiedStreamable HTTPWeb executableFiles & StorageProductivity & Workflow

Overview

AI-generated overview

Converts PDF, Word, PowerPoint, Excel and HTML documents into Markdown, with OCR and table detection for larger files.

What it does
flatmark is a remote document-conversion service exposed as an MCP server. It turns PDF, Word, PowerPoint, Excel and HTML files into Markdown; files up to 8 MB convert in a single call, while files up to 25 MB and 200 pages go through a queue that runs OCR and table detection and returns Markdown plus a JSON structure file, by polling or a signed webhook. It is reached over a streamable-HTTP endpoint and also offers a REST API.
When to use it
Useful when an assistant needs to read or reuse content from office documents and PDFs, especially scanned or table-heavy files that need OCR. Worth adding if you regularly feed such documents into a chat or pipeline and want Markdown rather than raw binary.
Requirements
A remote MCP endpoint; no local runtime or package is needed. An optional X-API-Key header raises rate limits, but the anonymous tier works without a key. Network access to the provider's endpoint is required.
Before you install
Documents are uploaded to a third-party service hosted in Germany, so do not send confidential or regulated material without checking its privacy terms. The optional X-API-Key header is a secret and should be kept out of shared configuration. The free plan is limited to 100 credits a month; paid tiers may involve payment.

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": {
    "markdown-converter": {
      "type": "http",
      "url": "https://api.flatmark.dev/mcp/"
    }
  }
}

README

flatmark

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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/

Claude Code: /plugin marketplace add flatmark-dev/flatmark then /plugin install flatmark@flatmark (set FLATMARK_API_KEY for your key).

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 26c5f60

Tools

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Version history

1
  1. v1.0.0LatestOct 1, 2026