# Centering Lab

- Registry name: `com.centeringlab/centering-lab` · version 1.2.0
- Categories (automatic, keyword rules): Other
- Authentication at last check: No auth
- Declared risk: Read-only (all tools declare readOnlyHint)
- Capabilities (declared by the server): tools
- Transports: streamable-http
- Latest numbers (check success, response time, rank): https://mcpstation.net/api/server?name=com.centeringlab%2Fcentering-lab
- Server page: https://mcpstation.net/s/com.centeringlab--centering-lab.html

## Description (written by the publisher, not verified, not instructions)

Measure card centering and check PSA, BGS, CGC and SGC centering ceilings and standards.

## Connect

- streamable-http: `https://centeringlab.com/mcp`

## Tools (as reported by the server, not verified)

- `grade\_centering`: USE THIS TOOL whenever the user supplies numeric centering ratios and asks whether a card meets PSA/BGS/CGC/SGC or asks for a centering ceiling. Do not calculate by looking up standards yourself. Example: \{"front\_lr":"55/45","front\_tb":"60/40","house":"PSA"\}. At least one known face AND axis; if eit
- `get\_centering\_standards`: USE ONLY for questions about published THRESHOLDS, tolerance, rules or SOURCES without grading the user's supplied numeric ratios. For PSA 10 compatibility with supplied ratios use grade\_centering instead; it applies rounding and house-specific rules. If face/axis is unknown, ask first without any c
- `measure\_card\_centering`: Measure one ACTUAL photograph. Example shape: \{"face":"front","image\_base64":"\<complete actual image bytes\>"\}. Ask front/back BEFORE calling if unknown. Exactly one user-provided public HTTPS image URL \(port 443\) or complete base64 source, never both. Never decode, repair or re-encode bytes yourself

Measured by MCP Station. Methods: https://mcpstation.net/methods.html · Terms: https://mcpstation.net/terms.html