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postcache

by postcache.dev · remote · no sign-in to list tools · v1.0.0 · published by dev.postcache

Public, short-lived media URLs for agents posting to Instagram, Threads and Facebook.

Deletes · 1Changes · 2
CompareRegistry entry

4 tools: 1 can delete or cancel things, 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 postcache https://postcache.dev/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.

4 tools

Deletes or cancels 1Claude Code: deny
  • delete_mediaDelete an uploaded file now (call after the post is published).No findings

    Why it is in this group

    • The name "delete_media" says "delete": a word for removing or ending something.
    Description, as the server wrote it
    Delete an uploaded file now (call after the post is published).
Changes things 2Claude Code: ask
  • check_mediaCheck a file against a platform without storing it.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.
    Description, as the server wrote it
    Check a file against a platform without storing it. With convert, also says whether conversion can fix it.
  • upload_mediaUpload an image or video for a social platform.No findings

    Why it is in this group

    • The name "upload_media" says "upload": a word for a change.
    Description, as the server wrote it
    Upload an image or video for a social platform. Returns a public URL that passes the platform media rules, or the problems with fixes. With convert, a fixable file comes back as status "converting": poll get_media until status is "ready" (url set) or "failed". Give the URL to the platform API (image_url / video_url), then call delete_media.
Only reads 1Claude Code: allow
  • get_mediaStatus (converting, ready, failed), URL, expiry and fetch count of an uploaded file.No findings

    Why it is in this group

    • The name "get_media" says "get": a word for reading.
    Description, as the server wrote it
    Status (converting, ready, failed), URL, expiry and fetch count of an uploaded file.

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

claude mcp add --transport http postcache https://postcache.dev/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__postcache__get_media"
    ],
    "ask": [
      "mcp__postcache__upload_media",
      "mcp__postcache__check_media"
    ],
    "deny": [
      "mcp__postcache__delete_media"
    ]
  }
}

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 postcache. Review it before you use it.