JustFill PDF Forms MCP Server

Detect, review and fill PDF form fields - scans included - via justfill.app

Remote serverstreamable-http

What is the JustFill PDF Forms MCP Server?

Detect, review and fill PDF form fields - scans included - via justfill.app

What it actually does

Let AI agents (Claude, ChatGPT, n8n — any MCP client) detect, review and fill PDF form fields through justfill.app.

More MCP options

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Maintainer setup documentation.

Recorded tools

Check the linked publisher documentation and your connected client's tool list. Names and availability can vary with the server version and account permissions.

ToolWhat it does
open_pdfpath, min_confidence=0.0, max_pages=10, force_detect=False) —
render_previewpage_index) — page image with labeled field boxes (blue = deterministic, green/orange/red = ML confidence)
render_filled_previewvalues, page_index) — the same page with your values
list_fieldspage_index?)
add_fieldx, y, w, h, name, page_index, field_type, align?, vertical_align?) — coords in % of page, top-left origin
update_fieldfield_id, …) / remove_field(field_id)
update_fields[{field_id, …}, …]) / remove_fields([ids]) — batch versions
prune_fieldsfield_type?, confidence_below?, width_below?, height_below?, page_index?, exclude_ids?) —
fill_pdfvalues, output_path, flatten=True) — values = {field_id: text};
save_templatename) — persist the reviewed layout for deterministic repeat fills
list_templates)

How to install the JustFill PDF Forms MCP Server

{
  "mcpServers": {
    "justfill": {
      "command": "justfill-mcp"
    }
  }
}

From the project documentation. Replace placeholders and example paths before connecting.

Frequently asked questions

Detect, review and fill PDF form fields - scans included - via justfill.app Confirm the tools offered by your installed version in the connected client. Tool availability and permissions depend on the server and account configuration.