docker-hub

Docker Hub CLI

Docker Hub public API. Search container images, browse tags, check sizes, inspect Dockerfiles, and explore the world's largest container registry. No authentication required for public repositories (rate limited to ~18 req/min).

Created by @hnshah (Hiten Shah).

Install

The recommended path installs both the docker-hub-pp-cli binary and the pp-docker-hub agent skill (Claude Code, Codex, Cursor, Gemini CLI, GitHub Copilot, and other agents supported by the upstream skills CLI) in one shot:

npx -y @mvanhorn/printing-press-library install docker-hub

For CLI only (no skill):

npx -y @mvanhorn/printing-press-library install docker-hub --cli-only

For skill only — installs the skill into the same agents as the default command above, but skips the CLI binary (use this to update or reinstall just the skill):

npx -y @mvanhorn/printing-press-library install docker-hub --skill-only

To constrain the skill install to one or more specific agents (repeatable — agent names match the skills CLI):

npx -y @mvanhorn/printing-press-library install docker-hub --agent claude-code
npx -y @mvanhorn/printing-press-library install docker-hub --agent claude-code --agent codex

Without Node (Go fallback)

If npx isn't available (no Node, offline), install the CLI directly via Go (requires Go 1.26.6 or newer):

go install github.com/mvanhorn/printing-press-library/library/developer-tools/docker-hub/cmd/docker-hub-pp-cli@latest

This installs the CLI only — no skill.

Pre-built binary

Download a pre-built binary for your platform from the latest release. On macOS, clear the Gatekeeper quarantine: xattr -d com.apple.quarantine <binary>. On Unix, mark it executable: chmod +x <binary>.

Install for Hermes

Install the CLI binary first. The installer writes binaries to a per-user managed bin directory by default: $HOME/.local/bin on macOS/Linux and %LOCALAPPDATA%\Programs\PrintingPress\bin on Windows.

npx -y @mvanhorn/printing-press-library install docker-hub --cli-only

Then install the focused Hermes skill.

From the Hermes CLI:

hermes skills install mvanhorn/printing-press-library/cli-skills/pp-docker-hub --force

Inside a Hermes chat session:

/skills install mvanhorn/printing-press-library/cli-skills/pp-docker-hub --force

Restart the Hermes session or gateway if the newly installed skill is not visible immediately.

Install for OpenClaw

Install both the CLI binary and the focused OpenClaw skill. The installer defaults binaries to a per-user bin directory ($HOME/.local/bin on macOS/Linux, %LOCALAPPDATA%\Programs\PrintingPress\bin on Windows):

npx -y @mvanhorn/printing-press-library install docker-hub --agent openclaw

Restart the OpenClaw session or gateway if the newly installed skill is not visible immediately.

Use with Claude Desktop

This CLI ships an MCPB bundle — Claude Desktop's standard format for one-click MCP extension installs (no JSON config required).

To install:

1. Download the .mcpb for your platform from the latest release.
2. Double-click the .mcpb file. Claude Desktop opens and walks you through the install.

Requires Claude Desktop 1.0.0 or later. Pre-built bundles ship for macOS Apple Silicon (darwin-arm64) and Windows (amd64, arm64); for other platforms, use the manual config below.

Manual JSON config (advanced)

If you can't use the MCPB bundle (older Claude Desktop, unsupported platform), install the MCP binary and configure it manually.

go install github.com/mvanhorn/printing-press-library/library/other/docker-hub/cmd/docker-hub-pp-mcp@latest

Add to your Claude Desktop config (~/Library/Application Support/Claude/claude_desktop_config.json):

{
  "mcpServers": {
    "docker-hub": {
      "command": "docker-hub-pp-mcp"
    }
  }
}

Quick Start

1. Install

See Install above.

2. Verify Setup

docker-hub-pp-cli doctor

This checks your configuration.

3. Try Your First Command

docker-hub-pp-cli docker-hub-search

Usage

Run docker-hub-pp-cli --help for the full command reference and flag list.

Commands

docker-hub-search

Manage docker hub search

• docker-hub-pp-cli docker-hub-search search-repositories - Full-text search across all Docker Hub repositories. Returns name, description, stars, and pull counts.

repositories

Repository metadata and details

• docker-hub-pp-cli repositories get-repository - Full metadata for a Docker Hub repository including pull count, stars, description, and last update time.

Output Formats

# Human-readable table (default in terminal, JSON when piped)
docker-hub-pp-cli docker-hub-search

# JSON for scripting and agents
docker-hub-pp-cli docker-hub-search --json

# Filter to specific fields
docker-hub-pp-cli docker-hub-search --json --select id,name,status

# Dry run — show the request without sending
docker-hub-pp-cli docker-hub-search --dry-run

# Agent mode — JSON + compact + no prompts in one flag
docker-hub-pp-cli docker-hub-search --agent

Agent Usage

This CLI is designed for AI agent consumption:

• Non-interactive - never prompts, every input is a flag
• Pipeable - --json output to stdout, errors to stderr
• Filterable - --select id,name returns only fields you need
• Previewable - --dry-run shows the request without sending
• Read-only by default - this CLI does not create, update, delete, publish, send, or mutate remote resources
• Offline-friendly - sync/search commands can use the local SQLite store when available
• Agent-safe by default - no colors or formatting unless --human-friendly is set

Exit codes: 0 success, 2 usage error, 3 not found, 5 API error, 7 rate limited, 10 config error.

Health Check

docker-hub-pp-cli doctor

Verifies configuration and connectivity to the API.

Configuration

Config file: ~/.config/docker-hub-pp-cli/config.toml

Troubleshooting

Not found errors (exit code 3)

• Check the resource ID is correct
• Run the list command to see available items

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