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Use when needing authentication separate from grading. Used for autograph, memorabilia, and pre-purchase verification.
默认使用会先检查来源的 Prompt；你也可以切换为直接命令，或下载本地副本。
决定是否安装前，请先阅读 SKILL.md，以及 SkillsMP 当前展示的配套文件。
用 Codex 或 Claude 帮你安装 复制这段 Prompt，粘贴到 Codex、Claude 或其他助手里，让它检查 Skill 页面并帮你完成安装。
直接命令不会经过审查 Prompt；运行前请先检查来源。
npx skills add https://github.com/x3allamerican/cards-skills --skill third-party-authentication-services命令会保持在同一行。复制前请横向滚动并检查完整内容。
想先保存到本地？可下载 SkillsMP 当前能够提供的文件。
基于 SOC 职业分类
正在显示 SKILL.md
| name | third-party-authentication-services |
| description | Use when needing authentication separate from grading. Used for autograph, memorabilia, and pre-purchase verification. |
PSA/DNA, JSA, BGS, Beckett Authentication, and SGC offer authentication without grading. Cost $10-50 per card.
Before buying a $5K+ raw card:
Game-used jerseys, balls, equipment: PSA/DNA or JSA standard. Auction houses require third-party COA for premier sales.
Concierge tool recommends pre-purchase auth for high-value raw purchases.