# sign_pdf: Sign a PDF

Stamp a signature image (PNG or JPEG) on a page: at a named spot (bottom-right by default) or at x and y in points from the top-left corner.

A tool of the [FynePDF MCP server](https://fynepdf.com/developers/docs/mcp) (`https://api.fynepdf.com/mcp`). Makes a new file; the original is kept.

## Ask for it

- "Sign the last page with my signature image."
- "Add my signature at the bottom right."

## Inputs

| Input | Type | Required | What it does |
|---|---|---|---|
| `file_id` | string |  | A FynePDF file_id from upload_file, import_file_from_url or an earlier tool. |
| `file` | object |  | A file the person attached in ChatGPT (filled in by ChatGPT). |
| `file_url` | string |  | A public link to the file. |
| `library_file_id` | string |  | A file from the person's FynePDF Library (from list_library_files). |
| `signature_file_id` | string |  | The signature image's file_id. |
| `signature` | object |  | A signature image attached in ChatGPT. |
| `signature_url` | string |  |  |
| `page` | integer or "first" · "last" · "all" |  |  |
| `position` | "bottom-right" · "bottom-center" · "bottom-left" · "top-right" · "top-left" |  |  |
| `x` | number |  |  |
| `y` | number |  |  |
| `width` | number |  |  |

## The same over HTTP

From your own code, call [Sign PDF API](https://fynepdf.com/developers/docs/api/sign).

## Connect it

[Claude](https://fynepdf.com/developers/docs/mcp/claude) · [ChatGPT](https://fynepdf.com/developers/docs/mcp/chatgpt) · [Cursor](https://fynepdf.com/developers/docs/mcp/cursor) · [VS Code](https://fynepdf.com/developers/docs/mcp/vscode) · [Claude Code](https://fynepdf.com/developers/docs/mcp/claude-code)


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Open this page in a browser: https://fynepdf.com/developers/docs/mcp/tools/sign_pdf

More: [All tools](https://fynepdf.com/tools) · [AI agents](https://fynepdf.com/ai/agents) · [llms.txt](https://fynepdf.com/llms.txt) · [Sitemap](https://fynepdf.com/sitemap.xml)