PortHub

PortHub is a local-first tool for storing and retrieving Markdown context by hierarchical keys via CLI and MCP.

MVP Scope

• Local filesystem storage only (default: ~/.porthub; configurable via PORTHUB_HOME or --root).
• CLI workflows plus an MCP stdio server.
• Five commands: set, get, search, list, server.
• Exact match for get.
• Case-insensitive substring match for search (with optional key-only/content-only modes).

Install

Install the CLI tool:

uv tool install -U porthub

Or run directly without installation:

uvx porthub --help

For local development in this repository:

uv sync

You can run commands either through uv:

uv run porthub --help

Or through the installed script:

porthub --help

Usage

Set Markdown content from an inline string:

porthub set python/typer "# Typer\nCLI framework for Python"

Set Markdown content from a file:

porthub set python/typer --file ./notes/typer.md

Set Markdown content from stdin:

cat ./notes/typer.md | porthub set python/typer --stdin

Get content by exact key:

porthub get python/typer

Search by key or content (case-insensitive):

porthub search typer

Search by key only:

porthub search typer --key-only

Search by content only:

porthub search typer --content-only

Limit search results:

porthub search typer --limit 10

List all keys:

porthub list

Use a custom storage root for any command:

porthub --help
porthub list --root ./tmp-porthub
porthub get python/typer --root ./tmp-porthub

Or set a default storage root via environment variable:

export PORTHUB_HOME=./tmp-porthub
porthub list

MCP Server

Start MCP server over stdio:

uv run porthub server
uvx porthub server

Use custom storage root:

uv run porthub server --root ./tmp-porthub

Default MCP tools (namespaced):

• porthub_get(key)
• porthub_set(key, value)
• porthub_search(query, mode=\"all\"|\"key\"|\"content\", limit=None)
• porthub_list()

Tool responses are structured JSON objects with:

• ok (true or false)
• error (null or {code, message})
• tool payload fields such as key, content, matches, keys

Example MCP client configuration (same pattern as uvx + args):

{
  "mcpServers": {
    "porthub": {
      "command": "uvx",
      "args": ["porthub", "server"]
    }
  }
}

With custom storage root:

{
  "mcpServers": {
    "porthub": {
      "command": "uvx",
      "args": ["porthub", "server", "--root", "./tmp-porthub"]
    }
  }
}

Skills

This repository includes a local skill for package-documentation retrieval workflows:

• Install (method 1):

npx skills add narumiruna/porthub

• Install (method 2):

npx ctx7 skills install narumiruna/porthub

• Skill source: skills/porthub/SKILL.md

Key Rules

A key is valid only when all rules pass:

1. It is not empty after trimming spaces.
2. It does not start or end with /.
3. It does not contain //.
4. It does not contain ...
5. It does not end with .md.

Error Behavior

• Validation failures return non-zero exit code.
• get returns non-zero when a key is not found.
• search returns empty output with exit code 0 when no match exists.
• search returns non-zero when --key-only and --content-only are both provided.
• search returns non-zero when --limit is not greater than 0.
• set returns non-zero unless exactly one content source is provided:
  • positional value
  • --file
  • --stdin