Yahoo Finance — Printing Press CLI

Prerequisites: Install the CLI

This skill drives the

yahoo-finance-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 yahoo-finance --cli-only

Verify:
```
yahoo-finance-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 1.23+):

bash

go install github.com/mvanhorn/printing-press-library/library/commerce/yahoo-finance/cmd/yahoo-finance-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.

When to Use This CLI

Use this CLI when the user asks about:

stock, ETF, or fund quotes
chart history or price ranges
fundamentals or quote summary modules
options chains or simple moneyness filtering
trending symbols or predefined market screeners
ticker search and autocomplete
local watchlists
portfolio cost basis and unrealized P&L

Do not use it when the user specifically needs:

real-time streaming tick data
exchange-grade paid data feeds
broker/account actions like order entry

Best Command Mapping

"How is AAPL doing?" →

yahoo-finance-pp-cli quote --symbols AAPL --agent

"Give me a deeper view on Microsoft" →

yahoo-finance-pp-cli quote summary MSFT --agent

"Show me NVDA for the last year" →

yahoo-finance-pp-cli chart NVDA --range 1y --interval 1wk --agent

"What are the top gainers today?" →

yahoo-finance-pp-cli screener --scr-ids day_gainers --agent

"What is trending in the US?" →

yahoo-finance-pp-cli trending US --agent

"Track my portfolio" →

yahoo-finance-pp-cli portfolio perf --agent

"Compare AAPL, MSFT, and NVDA" →

yahoo-finance-pp-cli compare AAPL MSFT NVDA --agent

"Show me SPY options expiring soon" →

yahoo-finance-pp-cli options-chain SPY --max-dte 45 --agent

Unique Capabilities

watchlist

Save named ticker groups locally for reuse across commands.

bash

yahoo-finance-pp-cli watchlist create tech
yahoo-finance-pp-cli watchlist add tech AAPL MSFT NVDA GOOG

portfolio

Track local lots with purchase date and cost basis, then join them with live quotes.

bash

yahoo-finance-pp-cli portfolio add AAPL 50 185.50 --purchased 2024-06-15
yahoo-finance-pp-cli portfolio perf --agent
yahoo-finance-pp-cli portfolio gains --agent

digest

Summarize a watchlist into biggest gainers and losers.

bash

yahoo-finance-pp-cli digest --watchlist tech --agent

compare

Show a normalized multi-symbol comparison.

bash

yahoo-finance-pp-cli compare AAPL MSFT GOOG NVDA --agent

sparkline

Render a compact terminal sparkline from recent chart data.

bash

yahoo-finance-pp-cli sparkline AAPL --range 3mo

sql

Run SQL directly against the local Yahoo/watchlist/portfolio database.

bash

yahoo-finance-pp-cli sql "SELECT watchlist, COUNT(*) FROM watchlist_members GROUP BY watchlist" --agent

fx

Convert currencies without manually building Yahoo FX pair symbols.

bash

yahoo-finance-pp-cli fx USD EUR --amount 100 --agent

options-chain

Filter Yahoo's raw chain into a usable options view by moneyness and DTE.

bash

yahoo-finance-pp-cli options-chain AAPL --moneyness otm --max-dte 45 --type calls --agent

auth login-chrome

Import a browser session when Yahoo blocks the automatic crumb bootstrap from the current IP.

bash

yahoo-finance-pp-cli auth login-chrome --cookies ~/yahoo-cookies.json --crumb abc123

Command Reference

Market data:

yahoo-finance-pp-cli quote --symbols AAPL,MSFT

```
yahoo-finance-pp-cli quote summary AAPL
```

yahoo-finance-pp-cli chart AAPL --range 1mo --interval 1d

yahoo-finance-pp-cli fundamentals AAPL --type annualTotalRevenue

yahoo-finance-pp-cli insights --symbol AAPL

```
yahoo-finance-pp-cli options AAPL
```

yahoo-finance-pp-cli recommendations AAPL

yahoo-finance-pp-cli screener --scr-ids day_gainers

```
yahoo-finance-pp-cli trending US
```
```
yahoo-finance-pp-cli search "apple"
```

yahoo-finance-pp-cli autocomplete --query appl

Local-state and derived workflows:

yahoo-finance-pp-cli watchlist create|add|remove|list|show|delete

yahoo-finance-pp-cli portfolio add|list|remove|perf|gains

```
yahoo-finance-pp-cli digest
```
```
yahoo-finance-pp-cli compare
```
```
yahoo-finance-pp-cli sparkline
```
```
yahoo-finance-pp-cli sql
```
```
yahoo-finance-pp-cli fx
```
```
yahoo-finance-pp-cli options-chain
```

Utilities:

```
yahoo-finance-pp-cli sync
```
```
yahoo-finance-pp-cli workflow archive
```
```
yahoo-finance-pp-cli workflow status
```
```
yahoo-finance-pp-cli export
```
```
yahoo-finance-pp-cli import
```
```
yahoo-finance-pp-cli doctor
```
```
yahoo-finance-pp-cli auth status
```
```
yahoo-finance-pp-cli auth logout
```
```
yahoo-finance-pp-cli auth login-chrome
```

Practical Recipes

Morning briefing over a watchlist

bash

yahoo-finance-pp-cli watchlist create tech
yahoo-finance-pp-cli watchlist add tech AAPL MSFT NVDA GOOG META
yahoo-finance-pp-cli digest --watchlist tech --agent

Track a real portfolio with cost basis

bash

yahoo-finance-pp-cli portfolio add AAPL 50 185.50 --purchased 2024-06-15
yahoo-finance-pp-cli portfolio add MSFT 20 340.00 --purchased 2024-03-01
yahoo-finance-pp-cli portfolio perf --agent
yahoo-finance-pp-cli portfolio gains --agent

Compare several large-cap names

bash

yahoo-finance-pp-cli compare AAPL MSFT NVDA GOOG --agent

Fallback when Yahoo blocks your IP

bash

yahoo-finance-pp-cli auth login-chrome --cookies ~/yahoo-cookies.json --crumb abc123
yahoo-finance-pp-cli doctor

Session Model

Yahoo Finance uses a crumb/cookie session model, not an API key model.

first live request: the CLI tries to bootstrap the session automatically
if Yahoo blocks that bootstrap with HTTP 429: use
```
auth login-chrome
```
inspect cached state:
```
auth status
```
clear a bad cached session:
```
auth logout
```

Agent Mode

Add

--agent

when you want machine-oriented output.

It expands to:

```
--json
```
```
--compact
```
```
--no-input
```
```
--no-color
```
```
--yes
```

Useful companion flags:

```
--select <fields>
```
```
--dry-run
```
```
--no-cache
```
```
--data-source auto|live|local
```
```
--rate-limit <n>
```

Filtering output

--select

accepts dotted paths to descend into nested responses; arrays traverse element-wise:

bash

yahoo-finance-pp-cli <command> --agent --select id,name
yahoo-finance-pp-cli <command> --agent --select items.id,items.owner.name

Use this to narrow huge payloads to the fields you actually need — critical for deeply nested API responses.

Response envelope

Data-layer commands wrap output in

{"meta": {...}, "results": <data>}

. Parse

.results

for data and

.meta.source

to know whether it's

live

or local. The

N results (live)

summary is printed to stderr only when stdout is a TTY; piped/agent consumers see pure JSON on stdout.

Exit Codes

Code	Meaning
0	Success
2	Usage error
3	Resource not found
4	Session/auth-style error
5	API error
7	Rate limited
10	Config error

Argument Parsing

Given

$ARGUMENTS

Empty,
```
help
```
, or
```
--help
```
→ run
```
yahoo-finance-pp-cli --help
```
```
install
```
→ install CLI
```
install mcp
```
→ install MCP server
Anything else → map the user request to the best command above and run it with
```
--agent
```

MCP Server Installation

bash

go install github.com/mvanhorn/printing-press-library/library/commerce/yahoo-finance/cmd/yahoo-finance-pp-mcp@latest
claude mcp add yahoo-finance yahoo-finance-pp-mcp

Direct Use

Check whether
```
yahoo-finance-pp-cli
```
is installed.
If not installed, offer CLI installation.
Choose the command that matches the user's intent most directly.
Run with
```
--agent
```
unless the user explicitly wants human-formatted output.
If Yahoo is rate-limiting this machine, guide the user to
```
auth login-chrome
```
.

Agent Workflow Features

This CLI exposes three shared agent-workflow capabilities patched in from cli-printing-press PR #218.

Named profiles

Persist a set of flags under a name and reuse them across invocations.

bash

# Save the current non-default flags as a named profile
yahoo-finance-pp-cli profile save <name>

# Use a profile — overlays its values onto any flag you don't set explicitly
yahoo-finance-pp-cli --profile <name> <command>

# List / inspect / remove
yahoo-finance-pp-cli profile list
yahoo-finance-pp-cli profile show <name>
yahoo-finance-pp-cli profile delete <name> --yes

Flag precedence: explicit flag > env var > profile > default.

--deliver

Route command output to a sink other than stdout. Useful when an agent needs to hand a result to a file, a webhook, or another process without plumbing.

bash

yahoo-finance-pp-cli <command> --deliver file:/path/to/out.json
yahoo-finance-pp-cli <command> --deliver webhook:https://hooks.example/in

File sinks write atomically (tmp + rename). Webhook sinks POST

application/json

(or

application/x-ndjson

when

--compact

is set). Unknown schemes produce a structured refusal listing the supported set.

feedback

Record in-band feedback about this CLI from the agent side of the loop. Local-only by default; safe to call without configuration.

bash

yahoo-finance-pp-cli feedback "what surprised you or tripped you up"
yahoo-finance-pp-cli feedback list         # show local entries
yahoo-finance-pp-cli feedback clear --yes  # wipe

Entries append to

~/.yahoo-finance-pp-cli/feedback.jsonl

as JSON lines. When

YAHOO_FINANCE_FEEDBACK_ENDPOINT

is set and either

--send

is passed or

YAHOO_FINANCE_FEEDBACK_AUTO_SEND=true

, the entry is also POSTed upstream (non-blocking — local write always succeeds).

pp-yahoo-finance

NPX Install

Tags

SKILL.md Content

Yahoo Finance — Printing Press CLI

Prerequisites: Install the CLI

When to Use This CLI

Best Command Mapping

Unique Capabilities

`watchlist`

`portfolio`

`digest`

`compare`

`sparkline`

`sql`

`fx`

`options-chain`

`auth login-chrome`

Command Reference

Practical Recipes

Morning briefing over a watchlist

Track a real portfolio with cost basis

Compare several large-cap names

Fallback when Yahoo blocks your IP

Session Model

Agent Mode

Filtering output

Response envelope

Exit Codes

Argument Parsing

MCP Server Installation

Direct Use

Agent Workflow Features

Named profiles

--deliver

feedback