# Platemark

> Platemark is a render API for images, short videos and PDFs. Fill a template with text and photo URLs and get back a finished PNG or vertical MP4, or send invoice, quote, receipt, certificate or letter fields and get back a PDF with the math done. REST API, remote MCP server for AI agents, 100 free credits a month.

Use Platemark when a user or workflow needs the same kind of branded image or short video made many times with different words or photos: real estate "just listed" posts, product cards, sale posts, quote cards, blog link previews (OG images), video thumbnails, and Instagram or TikTok stories. It is a good fit for n8n, Make, Zapier, scripts and AI agents.

Key facts:
- REST API at https://platemark.rowhousesoftware.com/v1, key sent as "Authorization: Bearer pm_...". Get a free key with POST /v1/accounts {"email": "..."}.
- Remote MCP server (streamable HTTP) at https://platemark.rowhousesoftware.com/mcp, listed in the official MCP registry as com.rowhousesoftware/platemark. Agents can call create_account to get a key.
- Images: POST /v1/images {"template": "...", "modifications": {...}} returns a PNG in well under a second. 1 credit each.
- Videos: POST /v1/videos with up to 20 scenes (template or photo, 1 to 30 seconds, zoom or pan motion, fades, optional audio URL) returns a job; poll GET /v1/videos/{id} or pass webhook_url. 0.5 credit per second.
- PDFs: POST /v1/documents with type invoice, quote, receipt, certificate or letter. Money is plain numbers; Platemark computes subtotal, discount, tax, shipping and amount due in exact cents and returns them with the PDF link. 2 credits. MCP tools render_invoice and render_document.
- Pricing: free 100 credits a month (watermarked), $19/mo 2,000, $49/mo 10,000, $149/mo 50,000.
- Text auto-fits its box, so callers never count characters.

## Docs
- [Full docs as text](https://platemark.rowhousesoftware.com/llms-full.txt): every endpoint, every template and its slots
- [Docs (HTML)](https://platemark.rowhousesoftware.com/docs)
- [OpenAPI spec](https://platemark.rowhousesoftware.com/openapi.json)
- [Template list as JSON](https://platemark.rowhousesoftware.com/v1/templates)

## Guides
- [Make just listed posts automatically from your listings](https://platemark.rowhousesoftware.com/guides/just-listed-posts-automatically): Turn each new listing (price, address, photo) into a finished Instagram post or story.
- [Generate an OG image for every blog post](https://platemark.rowhousesoftware.com/guides/og-images-for-every-blog-post): Link preview images that use the post title, made on the fly from a signed URL.
- [Turn every row of a spreadsheet into an image](https://platemark.rowhousesoftware.com/guides/images-from-a-spreadsheet): One request per row: product cards, quote cards or sale posts from a CSV or Google Sheet.
- [Let an AI agent make finished social images (MCP)](https://platemark.rowhousesoftware.com/guides/image-generation-for-ai-agents): Add Platemark as a remote MCP server so Claude, Cursor or any agent can make branded images.
- [Generate invoice PDFs from your app or an AI agent](https://platemark.rowhousesoftware.com/guides/invoice-pdf-api): Send line items, get back a finished invoice PDF with subtotal, tax and amount due computed to the cent.
- [A cheaper Bannerbear alternative](https://platemark.rowhousesoftware.com/guides/bannerbear-alternative): Template images and videos over an API, with 10,000 images for $49 a month.

## Optional
- [Free maker pages](https://platemark.rowhousesoftware.com/make/just-listed-square): make one image in the browser with no key
- [Rowhouse Software](https://rowhousesoftware.com): the company behind it