---
title: "Packs"
description: "Harness Packs you can install today, with their commands and what each asks before it writes."
canonical: https://harnesscontextprotocol.io/packs
---

# Packs

> Harness Packs you can install today, with their commands and what each asks before it writes.

5 packs. JSON: https://harnesscontextprotocol.io/api/v1/packs

- [Transit](https://harnesscontextprotocol.io/packs/transit) (`public-read`, gold): Public-read gold pack: find, plan, show, status, follow. No login. Install: `hcpx install github:harnesscontextprotocol/hcp//examples/standalone/transit`
- [HCP Example](https://harnesscontextprotocol.io/packs/hcp-example) (`public-read`, gold): Public-read gold: the protocol CLI as a pack (doctor, list, lint, skill, catalog). Install: `hcpx install npm:@harnesscontextprotocol/example`
- [Ledger](https://harnesscontextprotocol.io/packs/ledger) (`gated-write`, gold): Gated-write gold pack: installer family, connect, confirm on transfer. Install: `hcpx install github:harnesscontextprotocol/hcp//examples/packs/ledger`
- [Echo](https://harnesscontextprotocol.io/packs/echo) (`public-read`, gold): Smallest composite pack. In-process, sandbox-safe, no binary. Install: `hcpx install github:harnesscontextprotocol/hcp//examples/packs/echo`
- [HCP CLI](https://harnesscontextprotocol.io/packs/hcp-cli) (`control`, gold): Bootstrap pack. The CLI is itself a pack: doctor, install, exec, init, search. Install: `hcpx doctor --json`

## Sitemap

- [Documentation](https://harnesscontextprotocol.io/docs)
- [Packs](https://harnesscontextprotocol.io/packs)
- [Glossary](https://harnesscontextprotocol.io/docs/reference/glossary)
- [llms.txt](https://harnesscontextprotocol.io/llms.txt)
- [llms-full.txt](https://harnesscontextprotocol.io/llms-full.txt)
- [OpenAPI](https://harnesscontextprotocol.io/openapi.json)
- [MCP](https://harnesscontextprotocol.io/mcp)