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Esta Habilidad de Claude califica cartas coleccionables (Pokémon, MTG, Flesh and Blood, Kayou) utilizando los estándares de PSA, BGS o CGC. Realiza una evaluación estructurada que cubre centrado, superficie, bordes y esquinas para asignar una calificación final con un intervalo de confianza. Úsala para preseleccionar cartas antes de enviarlas a calificar, resolver disputas sobre su condición o estimar rangos de valor.
Instalación rápida
Claude Code
Recomendadonpx skills add pjt222/agent-almanac -a claude-code/plugin add https://github.com/pjt222/agent-almanacgit clone https://github.com/pjt222/agent-almanac.git ~/.claude/skills/grade-tcg-cardCopia y pega este comando en Claude Code para instalar esta habilidad
Documentación
Grade TCG Card
Grade card per PSA/BGS/CGC. Observation-first (from meditate) → no grade anchoring.
Use When
- Pre-submission evaluation
- Pre-screen collection → high-grade candidates
- Settle buyer/seller disputes
- Learn consistent grading
- Estimate grade-value spread
In
- Required: card ID (set, #, name, variant)
- Required: images or physical desc (front + back)
- Required: standard (PSA 1-10, BGS 1-10 w/ subgrades, CGC 1-10)
- Optional: known market value at grades
- Optional: game (Pokemon, MTG, FaB, Kayou)
Do
Step 1: Clear bias → observe w/o prejudgment
From meditate Step 2-3: observe w/o anchor to expected grade/value.
- Set aside market value
- DO NOT look up sales/population reports pre-grade
- Known valuable → explicit: "Worth $X PSA 10. Set aside."
- Examine as physical object
- Gut impression noted but NOT anchored
- Premature grade thoughts → "anchoring" → return to observation
→ Neutral start. Grade anchoring = #1 source of inconsistency.
If err: bias sticky (high-value wants 10) → write bias explicit. Externalize → reduce influence. Proceed only as physical object.
Step 2: Centering
- Measure border all 4 sides front:
- L vs R (horizontal)
- T vs B (vertical)
- Ratio: 55/45 L-R, 60/40 T-B
- Repeat back
- Apply thresholds:
PSA Centering Thresholds:
+-------+-------------------+-------------------+
| Grade | Front (max) | Back (max) |
+-------+-------------------+-------------------+
| 10 | 55/45 or better | 75/25 or better |
| 9 | 60/40 or better | 90/10 or better |
| 8 | 65/35 or better | 90/10 or better |
| 7 | 70/30 or better | 90/10 or better |
+-------+-------------------+-------------------+
BGS Centering Subgrade:
+------+-------------------+-------------------+
| Sub | Front (max) | Back (max) |
+------+-------------------+-------------------+
| 10 | 50/50 perfect | 50/50 perfect |
| 9.5 | 55/45 or better | 60/40 or better |
| 9 | 60/40 or better | 65/35 or better |
| 8.5 | 65/35 or better | 70/30 or better |
+------+-------------------+-------------------+
- Record ratio per axis + subgrade.
→ Numeric ratios both faces + grade/subgrade. Most objective measurement.
If err: borders too narrow (full-art, borderless) → "centering N/A — borderless", skip Step 3. Services differ for borderless.
Step 3: Surface
- Front under good light:
- Print defects: ink spots, missing ink, print lines, color inconsistency
- Scratches: direct + angled light
- Whitening: haze/clouding
- Indentations: raking light
- Stain/discoloration: yellowing, water marks, chemical
- Back same criteria
- Factory vs handling:
- Factory: print lines, miscut, crimping → may be less penalized
- Handling: scratches, dents, stains → always penalized
- Rate:
- Pristine (10): flawless under mag
- Near-pristine (9-9.5): minor only under mag
- Excellent (8-8.5): minor naked eye
- Good (6-7): moderate, multiple
- Fair+ (1-5): significant
→ Defect inventory located + described + severity. Factory vs handling distinguished.
If err: low-res images → provide range not point grade. Recommend physical.
Step 4: Edge + corner
- 4 edges:
- Whitening: spots/lines along colored (most common)
- Chipping: edge layer missing
- Roughness: uneven / micro-tears
- Foil separation: holofoil delamination
- 4 corners:
- Sharpness: tip crisp
- Rounding: worn curve (slight/moderate/heavy)
- Splitting: layer separation (dings)
- Bending: turned/creased
- Rate same scale
- Note worst edge/corner
→ Per-edge + per-corner. Worst limits overall grade.
If err: in sleeve/toploader obscures → note which areas not fully assessed.
Step 5: Final grade
- PSA (1-10):
- Weakest sub limits final
- Perfect surface + 65/35 centering → cap PSA 8
- "Lowest limits" + adjust up if exceptional
- BGS (4 subgrades → overall):
- Centering, Edges, Corners, Surface each 1-10 in 0.5
- Overall = weighted avg, lowest subgrade limits
- BGS 10 Pristine → all 4 = 10
- BGS 9.5 Gem Mint → avg 9.5+ no sub <9
- CGC (similar to PSA w/ subgrades on label):
- Centering, Surface, Edges, Corners
- Overall = proprietary weighting
- Confidence:
- "PSA 8 (confident)" — clear, unlikely higher/lower
- "PSA 8-9 (borderline)" — either way
- "PSA 7-8 (uncertain)" — limited data
→ Final grade + confidence. BGS all 4 reported. Evidence from Steps 2-4.
If err: inconclusive (scratch vs dirt) → range + recommend pro grading. Never confident w/ insufficient data.
Check
- Bias check pre-grading (no anchoring)
- Centering both faces w/ ratios
- Surface examined (scratches, print, stain, indent)
- All 4 edges + corners individually
- Factory vs handling distinguished
- Grade evidence-backed from each sub
- Confidence stated
- Standard applied correctly
Traps
- Grade anchoring: value knowledge → bias toward hoped-for grade. Physical first.
- Ignore back: back surface + centering count. Many over-focus front.
- Factory vs handling confusion: both affect grade differently.
- Holofoil over-grade: hides scratches until angled. Multiple light angles.
- Centering illusion: art placement can mislead. Measure borders not art.
→
build-tcg-deck— condition affects tournament legalitymanage-tcg-collection— grade-based valuationmeditate— source of observation-without-prejudgment
Repositorio GitHub
Frequently asked questions
What is the grade-tcg-card skill?
grade-tcg-card is a Claude Skill by pjt222. Skills package instructions and resources that Claude loads on demand, so Claude can perform grade-tcg-card-related tasks without extra prompting.
How do I install grade-tcg-card?
Use the install commands on this page: add grade-tcg-card to Claude Code as a plugin, or clone its repository into your skills directory, then restart Claude so it picks up the skill.
What category does grade-tcg-card belong to?
grade-tcg-card is in the Other category, tagged general.
Is grade-tcg-card free to use?
Yes. grade-tcg-card is listed on AIMCP and free to install. It runs inside Claude, so no separate service account is required to use the skill itself.
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