# Centeringlab Centering Lab MCP server

Source: https://glimind.com/server/mcp-registry%2Fcom.centeringlab%2Fcentering-lab
Registry id: `mcp-registry/com.centeringlab/centering-lab`
Status: live (checked 2026-10-27T16:00:36.338Z)

## Verdict

Centeringlab Centering Lab MCP server answered 99.97% of Glimind's liveness checks over 30 days, better than 37% of MCP servers, with 547 ms median handshake and 1 outage in 90 days. Its agent-readiness grade is A (95/100) across 3 tools, costing an agent about 3,731 tokens to load. Checked every few minutes; no tool is ever called.

## Measurements (30 days)

| Metric | Value | Better than |
|---|---|---|
| Uptime, 30 days | 99.97% | 37% of MCP servers |
| Median handshake latency | 547 ms | 40% of MCP servers |
| p95 handshake latency | 2967 ms | — |
| Checks in 30 days | 4,358 | — |
| Outages, 90 days | 1 | — |
| Median recovery | 7 min | — |
| Agent-readiness score | 95/100 (A) | 79% of MCP servers |
| Tools | 3 | — |
| Tool-list size for an agent | ~3,731 tokens | 42% of MCP servers |
| Days observed | 24 | — |

## Install

```json
{
  "mcpServers": {
    "centeringlab-centering-lab-mcp-server": {
      "type": "http",
      "url": "https://centeringlab.com/mcp"
    }
  }
}
```

Claude Code:

```sh
claude mcp add --transport http centeringlab-centering-lab-mcp-server https://centeringlab.com/mcp
```

## Tools (3)

- `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
- `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 calculat
- `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

Measured by Glimind (https://glimind.com): MCP handshake + tool list only, no tool is ever called. CC BY 4.0.