Skip to content

dev.pdfops/pdfops-mcp

by pdfops.dev · remote · local (npm) · no sign-in to list tools · v0.3.6 · published by dev.pdfops

Deterministic PDF tools for AI agents: inspect fields, fill forms, merge PDFs, invoices.

Final · 2Changes · 2
CompareRegistry entry

5 tools: 2 do something that can't be undone, 2 change things and 1 only read.

Scanned Oct 21, 2026

No check matched anything in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http pdfops https://pdfops.dev/api/mcp --header 'Authorization: <your-authorization>'

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

5 tools

Can't be undone 2Claude Code: ask
  • pdf_invoiceGenerate a complete, professionally laid-out invoice PDF from structured data — no template needed.No findings

    Why it is in this group

    • The description's first verb is "generate": a word for a change.
    • The input addresses people (input.invoice.to): what it sends cannot be taken back.
    Description, as the server wrote it
    Generate a complete, professionally laid-out invoice PDF from structured data — no template needed. Deterministic: the same input produces byte-identical output (safe to re-run). Note: without a paid PDFops key the output carries a small "Generated with pdfops.dev" footer line. Returns the invoice inline as an application/pdf resource. Use this when you have invoice DATA and no document; if you already have an invoice PDF or a fillable template to populate, use pdf_fill instead.

    Annotations the server declares

    • readOnlyHint: false
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: true
  • pdf_mergeMerge two or more PDFs into one, in the order given, and return the result.No findings

    Why it is in this group

    • The name "pdf_merge" says "merge": a word for a change that another call does not undo.
    Description, as the server wrote it
    Merge two or more PDFs into one, in the order given, and return the result. Sources are read only and never modified. Returns the merged PDF inline as an application/pdf resource. This tool only concatenates whole documents: it does not reorder, rotate or delete pages within them, and it does not fill forms — use pdf_fill for a fillable form and pdf_invoice to build a document from data. An unreadable or rejected input fails with an error, so a partial merge is never returned.

    Annotations the server declares

    • readOnlyHint: false
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: true
Changes things 2Claude Code: ask
  • pdf_fillFill AcroForm form fields in a PDF and return the result.No findings

    Why it is in this group

    • The name "pdf_fill" says "fill": a word for a change.
    Description, as the server wrote it
    Fill AcroForm form fields in a PDF and return the result. Field names must exist in the PDF (use pdf_inspect first). All values are strings; checkboxes take "true"/"false"; dropdown/radio/optionlist values must be one of the field's options; text values must respect the field's maxLength from pdf_inspect. The source PDF is never modified. Returns the filled PDF inline as an application/pdf resource. Encrypted PDFs are rejected with decrypt advice (common for government blanks with an empty user password).

    Annotations the server declares

    • readOnlyHint: false
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: true
  • pdfops_usageCheck the current PDFops API quota for the configured key: tier, limit, used, remaining, the billing period, and the reset timestamp.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    Check the current PDFops API quota for the configured key: tier, limit, used, remaining, the billing period, and the reset timestamp. Read-only and safe to call before a batch to confirm there is headroom. Uses the API key this connection authenticated with.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: true
Only reads 1Claude Code: allow
  • pdf_inspectList a PDF's AcroForm form fields — names, types, options, current values, per-field maxLength where declared — plus a paste-ready fillTemplate object for pdf_fill and a hasXFA fla…No findings

    Why it is in this group

    • The name "pdf_inspect" says "inspect": a word for reading.
    Description, as the server wrote it
    List a PDF's AcroForm form fields — names, types, options, current values, per-field maxLength where declared — plus a paste-ready fillTemplate object for pdf_fill and a hasXFA flag (hybrid AcroForm/XFA inputs lose their XFA layer when filled). A PDF with no fillable form returns count 0. Read-only: the PDF is fetched but never modified. Call this FIRST when filling an unfamiliar PDF, since pdf_fill rejects unknown field names and over-length values.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: true

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 0.3.6. Values in angle brackets are yours to fill in.

claude mcp add --transport http pdfops https://pdfops.dev/api/mcp --header 'Authorization: <your-authorization>'

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__pdfops__pdf_inspect"
    ],
    "ask": [
      "mcp__pdfops__pdf_fill",
      "mcp__pdfops__pdf_merge",
      "mcp__pdfops__pdf_invoice",
      "mcp__pdfops__pdfops_usage"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as pdfops. Review it before you use it.