x3allamerican/cards-skills/bgs-grading-system
Claude Code and agent skill by x3allamerican/cards-skills
Trust tier 3
- community
Source check pending
Checking that the SKILL.md file is still in the repository.
Use when submitting to BGS or evaluating BGS grades. Covers sub-grades, Pristine 10, Black Label, and the BGS 9.5 vs PSA 10 economics.
Install
npx vskill@latest install x3allamerican/cards-skills/bgs-grading-systemSKILL.md
BGS Grading System
BGS publishes 4 sub-grades (centering, corners, edges, surface). Pristine 10 requires all 4 = 10. Black Label = Pristine + perfect every axis.
Sub-grade math
Overall grade follows the LOWEST sub-grade with a half-step round:
- 9-9-9.5-9.5 = 9.5
- 9.5-9.5-9.5-10 = 9.5
- 10-10-10-10 = 10 Pristine
- 10-10-10-10 + every back axis perfect = 10 BLACK LABEL
Black Label hits roughly 1 in 100,000 modern subs.
9.5 vs PSA 10 market
| Era | BGS 9.5 sells at | PSA 10 advantage | |
|---|---|---|---|
| Modern Pokemon | 0.5–0.7× PSA 10 | PSA dominant | |
| Modern sports rookie | 0.6–0.8× PSA 10 | PSA dominant | |
| MTG modern | 0.9–1.1× PSA 10 | BGS preferred | |
| Pristine 10 (sports) | 1.0–1.5× PSA 10 | BGS premium | |
| Black Label | 3–8× regular Pristine | BGS unique |
When to choose BGS
Choose BGS when:
- Card is a Pristine 10 candidate (all 4 sub-grades likely 10)
- MTG submission (collector preference)
- Customer wants sub-grade transparency
- Card has 1 weak axis — BGS half-grades smooth the hit
Where this fits in the X3 empire
Used in Crossover Arbitrage tool to evaluate crack-and-resubmit candidates.
Security
- Security scanPassed, 90 of 100Pattern checks on the skill's files.
- Model reviewPassed
Quality evaluation
- Task evaluationNot runNo evaluation yet. Run one in Skill Studio.
Source
- SKILL.md in the repositoryCheckingskills/bgs-grading-system/SKILL.md
Popularity
- 7-day trend score
- 5
Refreshed 15 Oct 2026, a month ago.
Works with
Any agent vskill installs to: 56 targets in all. These 39 have a page on this site.
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Embed badge
[](https://verified-skill.com/skills/x3allamerican/cards-skills/bgs-grading-system)