Skip to content

ai.powerline/inbox-preview

by powerline.ai · remote · no sign-in to list tools · v0.1.0 · published by ai.powerline

Render HTML/.eml emails in real Gmail, Outlook & Yahoo web clients and screenshot them

Changes · 1
CompareRegistry entry

4 tools: 1 change things and 3 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 inbox-preview https://api.powerline.ai/v1/mcp

Tools

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

4 tools

Changes things 1Claude Code: ask
  • submit_previewSubmit an email for rendering across email clients — full HTML, or a complete raw .eml (base64).No findings

    Why it is in this group

    • The name "submit_preview" says "submit": a word for a change.
    Description, as the server wrote it
    Submit an email for rendering across email clients — full HTML, or a complete raw .eml (base64). Provide exactly one of html/eml. Returns a job ID to poll for results.
Only reads 3Claude Code: allow
  • get_jobGet the status and screenshots for a preview job.No findings

    Why it is in this group

    • The name "get_job" says "get": a word for reading.
    Description, as the server wrote it
    Get the status and screenshots for a preview job. Poll until status is "completed".
  • get_screenshotFetch a rendered screenshot.No findings

    Why it is in this group

    • The name "get_screenshot" says "get": a word for reading.
    Description, as the server wrote it
    Fetch a rendered screenshot. Returns the image URL for the given job, client, width, and environment (color scheme / images).
  • list_clientsList the email clients this deployment can render right now, with their rendering tier, engine, and capabilitiesNo findings

    Why it is in this group

    • The name "list_clients" says "list": a word for reading.
    Description, as the server wrote it
    List the email clients this deployment can render right now, with their rendering tier, engine, and capabilities

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 0.1.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http inbox-preview https://api.powerline.ai/v1/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__inbox-preview__list_clients",
      "mcp__inbox-preview__get_job",
      "mcp__inbox-preview__get_screenshot"
    ],
    "ask": [
      "mcp__inbox-preview__submit_preview"
    ],
    "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 inbox-preview. Review it before you use it.