Merge, split, stamp and read PDFs, pure JavaScript, no upload. It merges and splits PDFs, extracts and reorders pages, rotates a sideways scan, stamps PAID or DRAFT or any text, watermarks the business name and VAT id from the shared profile, and reads text back best effort with no OCR.
Twelve tools out of Cascade's 100-tool ceiling is a cheap seat for something used a few times a week rather than continuously, unlike a timer or a spreadsheet tool held open all day.
| You say | Tool |
|---|---|
| Stamp PAID on this invoice and save a copy. | pdf_stamp |
| Join these three PDFs into one file. | pdf_merge |
| Split the scan: pages 1-3 are the invoice, 4 onwards is the receipt. | pdf_split |
The worked run stamped PAID on a 1-page invoice and wrote a new 0.9 MB file; the original file was byte-for-byte unchanged, which every writing tool here guarantees on purpose.
The file is mcp_config.json, and the key inside it is mcpServers.
| Scope | Path |
|---|---|
| macOS, Windows and Linux | ~/.codeium/windsurf/mcp_config.json |
If you also run Claude Desktop, the shortest path there is one click: pdf.mcpb
from the bundle catalog opens as an extension, with no JSON and no terminal.
Windsurf reads its own config, so here it is:
The config block:
{
"mcpServers": {
"pdf": {
"command": "node",
"args": ["/absolute/path/to/mcp-servers/servers/pdf/dist/index.js"]
}
}
}The node command above wants a built file. From a clone, once:
git clone https://github.com/theluckystrike/mcp-servers.git
cd mcp-servers && npm install
npm run build -w packages/mcp-license -w servers/pdfThat writes servers/pdf/dist/index.js, and its absolute path is the one argument
the config needs.
The npm packages are not published yet, so the form below returns a 404 today. It is here because it is what the entry becomes the day the publish lands, with nothing else changed:
{
"mcpServers": {
"pdf": {
"command": "npx",
"args": ["-y", "@theluckystrike/mcp-pdf"]
}
}
}Save and reopen the MCP Servers list; Cascade picks it up without restarting the editor.
Nothing is published to npm yet, so the working install paths are the ones above: the .mcpb bundle from the bundle catalog, a clone and build, or the hosted URL.
The same server runs at https://mcp.zovo.one/mcp/pdf over MCP streamable HTTP, no install. Mint a free token with curl https://mcp.zovo.one/mcp/token, or use a Pro key. It has no filesystem, so a file comes back as a one-hour download link.
{
"mcpServers": {
"pdf": {
"url": "https://mcp.zovo.one/mcp/pdf",
"headers": { "Authorization": "Bearer <token>" }
}
}
}Read this first: mcp_config.json applies to the legacy Cascade agent only. The Devin Local agent, the default for new tabs, takes its servers from the Devin CLI config files, so a correct entry here can still be invisible in a fresh tab. The other hard number is a cap: Cascade reaches at most 100 tools at once, and every enabled server spends from it.
Free: info, count and text unlimited; merge up to 5 files; edits on files up to 30 pages; the PAID and DRAFT stamp presets. Pro is $19 once, verified offline.
~/.codeium/windsurf/mcp_config.json, under mcpServers. Reach it from the MCPs icon at the top right of the Cascade panel, or Devin Settings, Cascade, MCP Servers.
That file applies to the legacy Cascade agent only. The Devin Local agent, the default for new tabs, reads its servers from the Devin CLI config files instead. Check which agent the tab runs.
Cascade reaches at most 100 tools at any one time, and every enabled server spends from that single budget. MCP PDF Tools contributes 12 tools, so keep the enabled list short rather than counting servers.
MCP PDF Tools in detail · The same server in VS Code and Cline · Every server in Windsurf · Guides · Windsurf docs · Buy Pro
Merge, split and stamp PDFs from chat, and why some come back as glyph numbers · Price drop alerts and PDF cleanup from chat: two small jobs you keep postponing · Splitting one big scan into separate documents · Merging a folder of receipts into one PDF from chat