Pp Marginalrevolution

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Marginal Revolution - Printing Press CLI

Prerequisites: Install the CLI

This skill drives the marginalrevolution-pp-cli binary. You must verify the CLI is installed before invoking any command from this skill. If it is missing, install it first:

1. Install via the Printing Press installer. It defaults binaries to $HOME/.local/bin on macOS/Linux and %LOCALAPPDATA%\Programs\PrintingPress\bin on Windows:

   npx -y @mvanhorn/printing-press-library install marginalrevolution --cli-only

2. Verify: marginalrevolution-pp-cli --version
3. Ensure the reported install directory is on $PATH for the agent/runtime that will invoke this skill.

If the npx install fails (no Node, offline, etc.), fall back to a direct Go install (requires Go 1.26.6 or newer):

go install github.com/mvanhorn/printing-press-library/library/media-and-entertainment/marginalrevolution/cmd/marginalrevolution-pp-cli@latest

If --version reports "command not found" after install, the runtime cannot see the binary directory on $PATH. Do not proceed with skill commands until verification succeeds.

When to Use This CLI

Use this CLI when you need current Marginal Revolution posts, categories, authors, comment counts, or cited outbound links without browser automation.

When Not to Use This CLI

Do not activate this CLI for requests that require creating, updating, deleting, publishing, commenting, upvoting, inviting, ordering, sending messages, booking, purchasing, or changing remote state. This printed CLI exposes read-only commands for inspection, export, sync, and analysis.

Command Reference

feed — Manage feed

• marginalrevolution-pp-cli feed — Returns the current public RSS feed. The feed is XML/RSS and does not require authentication.

RSS-native commands

• marginalrevolution-pp-cli latest --limit 10 --json - list recent posts
• marginalrevolution-pp-cli latest --author Tyler --category Economics - filter recent posts
• marginalrevolution-pp-cli search "ai" --agent - search current feed title/body/category text
• marginalrevolution-pp-cli read <url|guid|title> - read a current-feed post
• marginalrevolution-pp-cli links --limit 5 - extract outbound links from recent posts
• marginalrevolution-pp-cli categories - show category counts in the current feed
• marginalrevolution-pp-cli authors - show author counts in the current feed

Scope Notes

The public RSS feed is available to command-line clients. Marginal Revolution's WordPress JSON API and normal site-search URL returned Cloudflare browser challenges during implementation, so this CLI intentionally keeps search scoped to posts currently present in the feed.

Finding the right command

When you know what you want to do but not which command does it, ask the CLI directly:

marginalrevolution-pp-cli which "<capability in your own words>"

which resolves a natural-language capability query to the best matching command from this CLI's curated feature index. Exit code 0 means at least one match; exit code 2 means no confident match — fall back to --help or use a narrower query.

Auth Setup

No authentication required.

Run marginalrevolution-pp-cli doctor to verify setup.

Agent Mode

Add --agent to any command. Expands to: --json --compact --no-input --no-color --yes.

• Pipeable — JSON on stdout, errors on stderr

• Filterable — --select keeps a subset of fields. Dotted paths descend into nested structures; arrays traverse element-wise. Critical for keeping context small on verbose APIs:

  marginalrevolution-pp-cli feed --agent --select id,name,status

• Previewable — --dry-run shows the request without sending

• Offline-friendly — sync/search commands can use the local SQLite store when available

• Non-interactive — never prompts, every input is a flag

• Read-only — do not use this CLI for create, update, delete, publish, comment, upvote, invite, order, send, or other mutating requests

Response envelope

Commands that read from the local store or the API wrap output in a provenance envelope:

{
  "meta": {"source": "live" | "local", "synced_at": "...", "reason": "..."},
  "results": <data>
}

Parse .results for data and .meta.source to know whether it's live or local. A human-readable N results (live) summary is printed to stderr only when stdout is a terminal — piped/agent consumers get pure JSON on stdout.