Zero Skill: Automatically Discover and Invoke Paid External Tools on a Per-Use Basis When the Agent Says "Cannot Do It"

Zero is a search engine and payment layer designed for AI Agents. Official Skills will intervene when the model is about to say "cannot do" or ask users to register for APIs on their own, using zero search / get / fetch / review to discover and call external capabilities (x402 / MPP) on a pay-per-use basis. Users can log in with a unified wallet, eliminating the need to apply for individual Keys for each service. This article verifies the installation methods (Claude Code, Codex, Gemini CLI, Cursor) and cost control points based on the official repository, SKILL.md, zero.xyz and the npm package @zeroxyz/cli (version 1.30.0).