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:

Install via the Printing Press installer:

bash

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

Verify:
```
marginalrevolution-pp-cli --version
```
Ensure
```
$GOPATH/bin
```
(or
```
$HOME/go/bin
```
) is on
```
$PATH
```
.

If the

npx

install fails (no Node, offline, etc.), fall back to a direct Go install (requires Go 1.26.3 or newer):

bash

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

--version

reports "command not found" after install, the install step did not put the binary on

$PATH

. Do not proceed with skill commands until verification succeeds.

Use this CLI for recent Marginal Revolution posts in structured form, including author/category filtering, recent-feed search, post text, comment counts, and outbound links. It was regenerated with CLI Printing Press 4.2.1 and keeps the generated v4.2 agent/MCP scaffolding while adding RSS-native helper commands.

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:

bash

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

means at least one match; exit code

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:
bash
```
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:

json

{
  "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.

Agent Feedback

When you (or the agent) notice something off about this CLI, record it:

marginalrevolution-pp-cli feedback "the --since flag is inclusive but docs say exclusive"
marginalrevolution-pp-cli feedback --stdin < notes.txt
marginalrevolution-pp-cli feedback list --json --limit 10

Entries are stored locally at

~/.marginalrevolution-pp-cli/feedback.jsonl

. They are never POSTed unless

MARGINALREVOLUTION_FEEDBACK_ENDPOINT

is set AND either

--send

is passed or

MARGINALREVOLUTION_FEEDBACK_AUTO_SEND=true

. Default behavior is local-only.

Write what surprised you, not a bug report. Short, specific, one line: that is the part that compounds.

Output Delivery

Every command accepts

--deliver <sink>

. The output goes to the named sink in addition to (or instead of) stdout, so agents can route command results without hand-piping. Three sinks are supported:

Sink	Effect
`stdout`	Default; write to stdout only
`file:<path>`	Atomically write output to `<path>` (tmp + rename)
`webhook:<url>`	POST the output body to the URL ( `application/json` or `application/x-ndjson` when `--compact` )

Unknown schemes are refused with a structured error naming the supported set. Webhook failures return non-zero and log the URL + HTTP status on stderr.

Named Profiles

A profile is a saved set of flag values, reused across invocations. Use it when a scheduled agent calls the same command every run with the same configuration - HeyGen's "Beacon" pattern.

marginalrevolution-pp-cli profile save briefing --json
marginalrevolution-pp-cli --profile briefing feed
marginalrevolution-pp-cli profile list --json
marginalrevolution-pp-cli profile show briefing
marginalrevolution-pp-cli profile delete briefing --yes

Explicit flags always win over profile values; profile values win over defaults.

agent-context

lists all available profiles under

available_profiles

so introspecting agents discover them at runtime.

Exit Codes

Code	Meaning
0	Success
2	Usage error (wrong arguments)
3	Resource not found
5	API error (upstream issue)
7	Rate limited (wait and retry)
10	Config error

Argument Parsing

Parse

$ARGUMENTS

Empty,
help
, or
--help
→ show

marginalrevolution-pp-cli --help

output

Starts with
install
→ ends with
```
mcp
```
→ MCP installation; otherwise → see Prerequisites above
Anything else → Direct Use (execute as CLI command with
```
--agent
```
)

MCP Server Installation

Install the MCP binary from this CLI's published public-library entry or pre-built release, then register it:

bash

claude mcp add marginalrevolution-pp-mcp -- marginalrevolution-pp-mcp

Verify:

claude mcp list

Direct Use

Check if installed:
```
which marginalrevolution-pp-cli
```
If not found, offer to install (see Prerequisites at the top of this skill).
Match the user query to the best command from the Unique Capabilities and Command Reference above.

Execute with the

--agent

flag:

bash

marginalrevolution-pp-cli <command> [subcommand] [args] --agent

If ambiguous, drill into subcommand help:

marginalrevolution-pp-cli <command> --help

pp-marginalrevolution

NPX Install

Tags

SKILL.md Content

Marginal Revolution - Printing Press CLI

Prerequisites: Install the CLI

When to Use This CLI

When Not to Use This CLI

Command Reference

Scope Notes

Finding the right command

Auth Setup

Agent Mode

Response envelope

Agent Feedback

Output Delivery

Named Profiles

Exit Codes

Argument Parsing

MCP Server Installation

Direct Use