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Mergewell Mail Merge

by theluckystrike · remote · no sign-in to list tools · v1.0.1 · published by GitHub user theluckystrike

Mail merge from Excel or CSV to PDF, right in the chat.

Changes · 1
CompareRegistry entry

2 tools: 1 change things and 1 only read.

Scanned Oct 22, 2026

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

claude mcp add --transport http mail-merge https://mail-merge.zovo.one/mcp

Findings

Matches of fixed checks, with the text they matched.

1 warn
  • Warngenerate_merged_documents

    The server marks "generate_merged_documents" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

    Matched text

    annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "generate_merged_documents" says "generate": a word for a change.

    What this check looks for

Tools

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

2 tools

Changes things 1Claude Code: ask
  • generate_merged_documentsUse this when the user wants to mail merge from Excel or CSV to PDF: personalized letters from a spreadsheet (thank-you letters for each donor, the same letter to 200 people with t…1 finding

    Why it is in this group

    • The name "generate_merged_documents" says "generate": a word for a change.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

    Findings

    • Warn

      The server marks "generate_merged_documents" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

      Matched text

      annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "generate_merged_documents" says "generate": a word for a change.

      What this check looks for
    Description, as the server wrote it
    Use this when the user wants to mail merge from Excel or CSV to PDF: personalized letters from a spreadsheet (thank-you letters for each donor, the same letter to 200 people with their names), certificates in bulk from a name list (award, completion, participation), or envelopes from a contact list (#10 with return address). Fills {{Field}} placeholders with defaults, formats and {{#if}} conditions for each row and returns ONE combined PDF (one document per record, up to 2,000 per batch) plus a per-record merge report CSV. Does not send email, mail, or print anything, and does not make mailing labels. Do not use for Outlook or Gmail bulk email.

    Annotations the server declares

    • title: Generate merged documents
    • readOnlyHint: true
    • destructiveHint: false
    • openWorldHint: false
    • idempotentHint: true
Only reads 1Claude Code: allow
  • preview_mail_mergeUse this when the user wants to check a mail merge before printing: see how their spreadsheet (CSV or Excel) or list fills a letter, certificate or envelope template, which templat…No findings

    Why it is in this group

    • The name "preview_mail_merge" says "preview": a word for reading.
    Description, as the server wrote it
    Use this when the user wants to check a mail merge before printing: see how their spreadsheet (CSV or Excel) or list fills a letter, certificate or envelope template, which template fields like {{First Name}} have no matching column, which columns were matched by a similar name (first_name for First Name), and which records have empty values. Returns the first 3 merged records (or from preview_from) and a missing-field report; no files. Does not send email, print, or make labels. Do not use for Outlook or Gmail email merges.

    Annotations the server declares

    • title: Preview mail merge
    • readOnlyHint: true
    • destructiveHint: false
    • openWorldHint: false
    • idempotentHint: 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 1.0.1. Values in angle brackets are yours to fill in.

claude mcp add --transport http mail-merge https://mail-merge.zovo.one/mcp

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__mail-merge__preview_mail_merge"
    ],
    "ask": [
      "mcp__mail-merge__generate_merged_documents"
    ],
    "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 mail-merge. Review it before you use it.