pp-uk-train-goat

What this skill does

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# UK Train Goat — Printing Press CLI

## Prerequisites: Install the CLI

This skill drives the `uk-train-goat-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:
   ```bash
   npx -y @mvanhorn/printing-press-library install uk-train-goat --cli-only
   ```
2. Verify: `uk-train-goat-pp-cli --version`
3. Ensure `$GOPATH/bin` (or `$HOME/go/bin`) is on `$PATH`.

If the `npx` install fails before this CLI has a public-library category, install Node or use the category-specific Go fallback after publish.

If `--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.

uk-train-goat wraps the free National Rail OpenLDBWS API with a Cobra command tree, an MCP server, and an offline station database. Live departures, arrivals, journey planning A->B, and service status all run from one terminal command and ship with a programmatic eval grader that pins tool descriptions for LLM agents.

## When to Use This CLI

Use uk-train-goat for any UK National Rail question an agent or terminal user has: live departures, live arrivals, journey planning between two stations on today or a future date, and service-status / delay-reason lookups. The local SQLite store gives every command offline CRS resolution and supports saved-commute features (`go`, `saved status`, `recent`) that a thin API wrapper cannot. Do not use uk-train-goat for booking, fare comparisons against Trainline, EU/Eurostar trains, or real-time push notifications; those are explicit non-goals for v0.1.

## 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.

## Unique Capabilities

These capabilities aren't available in any other tool for this API.

### Local state that compounds

- **`go`** — Run a saved commute in one keystroke; resolves origin, destination, and time-window from the local store.

  _Pick this when an agent needs the user's named recurring route resolved from local state, not a fresh A->B planning call._

  ```bash
  uk-train-goat-pp-cli go morning --json --select services.std,services.platform,services.etd
  ```
- **`saved status`** — Fans out across every saved route and prints a single ranked status table for all your commutes.

  _Pick this on disruption mornings when a user has multiple saved commutes and wants one answer, not N separate board calls._

  ```bash
  uk-train-goat-pp-cli saved status --json --select routes.name,routes.next.std,routes.next.etd
  ```
- **`recent`** — Re-runs your recent A->B searches with fresh live data, side-by-side, so iterative trip planning is one keystroke per refresh.

  _Pick this when the user is iterating dates or origins for one trip; every previous query stays one keystroke away._

  ```bash
  uk-train-goat-pp-cli recent --json --select queries.from,queries.to,queries.next.std
  ```

### Agent-native plumbing

- **`stations`** — FTS5 search over the local UK CRS code table; resolves Paddington -> PAD with no network call.

  _Pick this whenever the user names a station in prose; resolve to CRS once, then call any other uk-train-goat command._

  ```bash
  uk-train-goat-pp-cli stations --search kings --json --select results.crs,results.name
  ```
- **`board`** — Accept a comma-separated list of CRS codes and merge departures across all of them into one ranked time-ordered list.

  _Pick this when an agent needs the next London-bound (or other regional cluster) departure across multiple terminals at once._

  ```bash
  uk-train-goat-pp-cli board PAD,KGX,EUS --in 30m --json --select services.origin,services.std,services.destination
  ```
- **`eval`** — Programmatic eval grader that scores an LLM agent against a fixture suite of natural-language UK-rail prompts; 80% pass-rate threshold blocks ship.

  _Run this in CI on changes to internal/cli or internal/mcp; failing evals mean an agent will pick the wrong tool or wrong args._

  ```bash
  EVAL_AGENT_MODEL=claude-sonnet-4-6 uk-train-goat-pp-cli eval --json
  ```

### Service-specific content

- **`why`** — Combines GetServiceDetails delay/cancel reasons with adjacent operator alerts into one screen explaining what is going wrong with one service.

  _Pick this when the user wants to understand a delay, not just see it._

  ```bash
  uk-train-goat-pp-cli why L8rW0bMonHt3K4IengVPQw== --json
  ```
- **`journey`** — Ranks A->B options by combined scheduled-time, current delay, and platform-known signal so on-time-but-later beats earlier-but-late.

  _Pick this for trip planning during disruption; choosing the earliest scheduled departure is often wrong when delays exist._

  ```bash
  uk-train-goat-pp-cli journey RDG PAD --rank --json --select journeys.std,journeys.delay,journeys.platform
  ```

## Command Reference

**status** — Internal placeholder resource. Real commands are hand-authored against the OpenLDBWS wrapper.

- `uk-train-goat-pp-cli status` — Placeholder; deleted post-generate. Real CLI commands live in internal/cli/board.go etc.


### Finding the right command

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

```bash
uk-train-goat-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.

## Recipes


### Daily morning commute check

```bash
uk-train-goat-pp-cli go morning --json
```

Resolves the saved commute named 'morning' and returns the next departures filtered to your destination.

### Compact multi-station agent query

```bash
uk-train-goat-pp-cli board PAD,KGX,EUS --in 30m --agent --select services.origin,services.std,services.destination,services.etd
```

Multi-origin fan-out + dotted-path field selection; tight payload for an LLM context window. --in / --within accept human-readable durations (30m, 1h).

### Why is my train late

```bash
uk-train-goat-pp-cli why $SERVICE_ID --json
```

Composes service detail with NRCC operator alerts so the user sees the reason, not just the delay.

### Iterative trip planning

```bash
uk-train-goat-pp-cli recent --json
```

Re-runs your recent journey queries with fresh live data; one keystroke per refresh.

### CI eval gate

```bash
uk-train-goat-pp-cli eval --json
```

Runs the agent eval suite (set EVAL_AGENT_MODEL=claude-sonnet-4-6 in your environment first; exits non-zero if pass rate drops below 80%).

## Auth Setup
Run `uk-train-goat-pp-cli auth setup` to print the URL and steps for getting a key (add `--launch` to open the URL). Then set:

```bash
export LDBWS_API_TOKEN="<your-key>"
```

Or persist it in `~/.config/uk-train-goat-pp-cli/config.toml`.

Run `uk-train-goat-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
  uk-train-goat-pp-cli status --agent --select id,name,