The flatmark MCP server,
connected in one click.
Document to Markdown MCP server: PDF, Word, PowerPoint, Excel and HTML, with OCR for large files. Connect the official flatmark MCP server to Claude, ChatGPT, or Cursor through gate — one gateway URL, no config files, security-checked.
Free to start · No credit card · No hosting needed
Add flatmark to your AI in one minute
Pick your client. Copy, paste, done — or let gate handle sign-ins and policies for you.
claude mcp add --transport http flatmark https://api.flatmark.dev/mcp/Run in your terminal, then restart Claude Code.
flatmark · https://api.flatmark.dev/mcp/
What your AI can do with flatmark
Real prompts you can type the moment it's connected — no setup, no docs to read.
“Use “convert_document”: Convert a document up to 8 MB to Markdown and return it directly. Pass the file as base64 in `content_base64`, or as a download link in `fi.”
“Use “submit_conversion_job”: Queue a document up to 25 MB and 200 pages for conversion with OCR and tables. Pass the file as base64 in `content_base64`, or as a downloa.”
“Use “get_conversion_job”: Check a queued conversion job you submitted. Returns `job_id` and `status` (`queued`, `running`, `succeeded` or `failed`). A succeeded job.”
How secure is the flatmark MCP server?
Every server in the gate directory has to pass the same four checks before your AI can touch it. Here's how flatmark holds up.
Security grade D
gate scanned 3 tools on Oct 1, 2026. A few things are worth a look before you connect.
- mediumconvert_document: References secrets or data exfiltration
- mediumsubmit_conversion_job: References secrets or data exfiltration
- mediumget_conversion_job: References secrets or data exfiltration
- +2 more in the full report
Official endpoint
Operated by flatmark (flatmark.dev) at its documented MCP endpoint — not a third-party mirror or community re-host.
No sign-in needed
This server only exposes public data — no account and no credentials are involved when you connect.
Scanned before it goes live
gate checks every tool for prompt injection, hidden instructions, data-exfiltration hints, and over-broad permissions before the server is available through your gateway.
Watched for drift
If flatmark adds or changes tools later, gate re-scans and alerts you — before your AI acts on the change.
Connected in three steps
Connect your gate
Add one gateway URL to Claude, ChatGPT, or any MCP client. One-time setup, about two minutes.
Pick flatmark
Choose flatmark in the gate directory. No sign-in needed.
Use it anywhere
flatmark's tools are live in every AI client you've connected — with rules and logging built in.
Free to start · No credit card · No hosting needed
The actual tools flatmark exposes
Fetched live from the official endpoint and re-checked daily by gate — not marketing copy.
convert_document — Convert a document up to 8 MB to Markdown and return it directly. Pass the file as base64 in `content_base64`, or as a download link in `fi
submit_conversion_job — Queue a document up to 25 MB and 200 pages for conversion with OCR and tables. Pass the file as base64 in `content_base64`, or as a downloa
get_conversion_job — Check a queued conversion job you submitted. Returns `job_id` and `status` (`queued`, `running`, `succeeded` or `failed`). A succeeded job
Who runs the flatmark MCP server?
The flatmark MCP server at a glance
https://api.flatmark.dev/mcp/Questions, answered
Is there an official flatmark MCP server?
Yes — flatmark operates its own remote MCP server at api.flatmark.dev. gate connects you to that official endpoint and adds security scanning, per-tool access rules, and an activity log on top.
How do I connect flatmark to Claude or ChatGPT?
Add gate's gateway URL to your AI client once, then pick flatmark in the directory. No account or sign-in is needed. From then on, flatmark's tools are available in every client you've connected to gate.
Do I need to host anything?
No. flatmark runs the server, and gate is fully managed. You just connect one URL — there's nothing to install, deploy, or maintain.
Is the flatmark MCP server safe to connect?
It's the vendor's official endpoint, and gate scans its tools for prompt injection and hidden instructions before it goes live, re-checks it whenever it changes, and lets you allow, block, or require approval for every single tool.
Is it free?
Yes — you can get started with gate for free and connect flatmark in minutes. No credit card required.
Connect more than just flatmark
Every server below works through the same gateway URL — connect once, add tools anytime.
Squarespace DomainsDesignView →Set up flatmark in: Claude · Claude Code · ChatGPT · Cursor · VS Code