harrypotter-cli

README

harrypotter

A command line for the Harry Potter API.

harrypotter is a single pure-Go binary. It reads public Harry Potter data from hp-api.onrender.com over plain HTTPS, shapes it into clean records, and prints output that pipes into the rest of your tools. No API key, nothing to run alongside it.

The same package is also a resource-URI driver, so a host program like ant can address Harry Potter resources as harrypotter:// URIs.

Install

go install github.com/tamnd/harrypotter-cli/cmd/harrypotter@latest

Or grab a prebuilt binary from the releases, or run the container image:

docker run --rm ghcr.io/tamnd/harrypotter:latest --help

Usage

harrypotter characters                          # all 437 characters
harrypotter characters --house Gryffindor       # filter by house
harrypotter students                            # 103 Hogwarts students
harrypotter students --house Slytherin          # students in Slytherin
harrypotter staff                               # 25 Hogwarts staff members
harrypotter spells                              # all 77 spells
harrypotter --help                              # full command tree

Every command shares one output contract: -o table|json|jsonl|csv|tsv|url|raw, --fields to pick columns, --template for a custom line, and -n to limit. The default adapts to where output goes (a table on a terminal, JSONL in a pipe), so the same command reads well by hand and parses cleanly downstream.

# pipe into jq
harrypotter characters -o json | jq '.[] | select(.alive)'

# get CSV of Slytherin students
harrypotter students --house Slytherin -o csv

# just names
harrypotter spells --fields name

Serve it

The same operations are available over HTTP and as an MCP tool set for agents, with no extra code:

harrypotter serve --addr :7777    # GET /v1/characters  returns NDJSON
harrypotter mcp                   # speak MCP over stdio

Use it as a resource-URI driver

harrypotter registers a harrypotter domain the way a program registers a database driver with database/sql. A host enables it with one blank import:

import _ "github.com/tamnd/harrypotter-cli/harrypotter"

Then ant (or any program that links the package) dereferences harrypotter:// URIs without knowing anything about the Harry Potter API:

ant get harrypotter://character/<uuid>   # fetch the character record
ant ls  harrypotter://characters         # list all characters
ant url harrypotter://spell/<uuid>       # the live https URL

Development

cmd/harrypotter/   thin main: hands cli.NewApp to kit.Run
cli/               assembles the kit App from the harrypotter domain
harrypotter/       the library: HTTP client, data models, and domain.go (the driver)
docs/              tago documentation site

make build      # ./bin/harrypotter
make test       # go test ./...
make vet        # go vet ./...

Releasing

Push a version tag and GitHub Actions runs GoReleaser, which builds the archives, Linux packages, the multi-arch GHCR image, checksums, SBOMs, and a cosign signature:

git tag v0.1.0
git push --tags

The Homebrew and Scoop steps self-disable until their tokens exist, so the first release works with no extra secrets.

License

Apache-2.0. See LICENSE.