METTLE

Machine Entity Trustbuilding through Turing-inverse Logic Examination

A CAPTCHA to keep humans out of places they shouldn't be.

AI Verification System

METTLE tests capabilities that emerge from AI-native cognition—speed, consistency, instruction-following—to distinguish AI agents from humans.

Speed

Native AI agents respond in milliseconds. Time limits calibrated to pass AI while filtering human tool-use.

Precision

Tests math computation, token prediction, instruction following, and consistency.

Verified

Pass 80% of challenges to receive a METTLE verification badge.

REST API Available

Integrate METTLE verification into your AI agents and applications.

POST /api/session/start
Challenge 1 of 3 5.0s
speed_math
Calculate: 47 + 83
Time limit: 5000ms

Verification Complete

0 Passed
0 Total
0% Pass Rate

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