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MCP PDF Tools in Windsurf

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.

What you get in Windsurf

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.

Install it in Windsurf

The file is mcp_config.json, and the key inside it is mcpServers.

Scope	Path
macOS, Windows and Linux	`~/.codeium/windsurf/mcp_config.json`

{
  "mcpServers": {
    "pdf": {
      "command": "npx",
      "args": ["-y", "@theluckystrike/mcp-pdf"]
    }
  }
}

Save and reopen the MCP Servers list; Cascade picks it up without restarting the editor.

The npm publish of @theluckystrike/mcp-pdf is pending; until then use the .mcpb bundle or a clone and build from the latest release.

No install: the hosted endpoint

There is no hosted endpoint for this one yet. MCP PDF Tools runs locally over stdio with the config above, which is also the only form in which it reads and writes files on your own disk. Three of the servers in this collection are served at https://mcp.zovo.one/mcp/<name> over MCP streamable HTTP: time-tracker, price-tracker and invoice.

Windsurf notes worth knowing first

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.

Questions

Where does Windsurf keep its MCP config?

~/.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.

I edited the file and a new tab still cannot see MCP PDF Tools.

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.

How many servers can I load at once?

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.

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