book-to-skill vs port22: Features, Pricing & Which Is Better (2026)

A side-by-side comparison of book-to-skill and port22 — features, pricing, and ideal use cases — to help you decide which AI tool fits your workflow.

book-to-skill

virgiliojr94

Free

Convert technical books, docs, and PDFs into a unified agent skill your AI coding assistant can reference in Claude Code, Copilot CLI, or Amp.

Multi-Format Ingest: Accepts PDF, EPUB, DOCX, Markdown, HTML, RTF, and MOBI as source material.
Folder & Multi-Source Support: Bundle a directory of mixed documents into one unified skill rather than one file per skill.
Agent Skills Standard Output: Produces skills that conform to the Agent Skills Open Standard so any compliant agent can load them.
Assistant Compatibility: Works with Claude Code, GitHub Copilot CLI, and Amp out of the box.
Token-Efficient Retrieval: Reports 24×–51× fewer tokens than dumping the source text into context.
MIT-Licensed CLI: Ships as an installable command-line tool with open-source license and GitHub releases.

Personal Study Reference: Convert a technical book you're reading into a skill your coding agent can quiz you on or cite while you code.
Domain-Knowledge Onboarding: Package a company's PDF handbook or spec collection so new-hire agents can answer questions without human bandwidth.
Framework Documentation: Turn a language or framework's PDF/HTML docs into a locally referenceable skill for offline agent use.
Research Collection: Bundle a folder of papers into one skill so an agent can cross-reference them during writing sessions.
Legacy System Playbook: Ingest older manuals or runbooks (RTF, DOCX) so agents helping with maintenance have grounded answers.

Freemium

Mobile remote for AI coding agents — pair your phone with a Mac companion and drive Claude Code, Codex, or OpenCode from anywhere.

Attach to a Live Session: Drives the agent session you already started in your terminal rather than spawning a fork or shadow instance.
Multi-Agent Support: Works with Claude Code, Codex, and OpenCode today, with OpenClaw and Hermes on the roadmap.
Live Token Streaming: Reads every token the agent produces as it thinks, edits files, and runs commands, streamed to your phone in real time.
Push Approvals: Sends a push the moment an agent finishes or needs input so you can approve or answer without opening the app.
Dynamic Island & Lock-Screen Status: Shows a live count in the Dynamic Island and the full session roster on the lock screen.
iCloud Pairing: Same Apple ID on Mac and iPhone auto-pairs devices — no new login and no QR code scanning.
LAN-First with Encrypted Relay: Uses the local network at your desk and falls back to an end-to-end-encrypted relay when remote, keeping code off port22 servers.

Approve Long-Running Agents on the Go: Kick off a Claude Code refactor and approve intermediate steps from your phone during commute or errands.
Monitor Overnight Runs: Watch an agent's live transcript from bed or a meeting without returning to the desk.
Cross-Room Development: Continue a coding session from the couch while the actual model, tools, and repo stay on the Mac.
Multi-Session Oversight: Track several parallel agent sessions from one phone view instead of tab-switching on the Mac.
Remote Debugging Assist: Read an agent's reasoning stream from a client site or coffee shop before deciding whether to intervene.