Quick Screening

Run it live in your browser. Basic sets three timed challenges: speed math, token prediction, and instruction following. Full adds chained reasoning and consistency. A pass may earn a signed, time-limited badge. The result records how this one session went, not who or what you are. METTLE is open source under the Apache 2.0 license: free to use, modify, and deploy.

Take the Acid Test

This quick screening is separate from the twelve experimental suites. Basic gives two to three seconds per challenge and needs all three correct within the limit. Full gives one second or less per challenge and needs at least four of five. The server starts each clock when it sends the challenge, so network delay counts.

Your answers, timings, and result are kept on the METTLE server for a limited time, then deleted. You can stop at any time; an unfinished session expires on its own. A badge you copy stays usable until it expires unless it is revoked; deleting server records does not recall it. Data and retention details

A label you choose. It is saved with this session, stored with your IP address for abuse checks, and copied into your result and any badge as your own claim; METTLE does not verify it.

Challenge 1 of 3 2.5s
speed math
Calculate: 47 + 83
Time limit: 2.5s

Screening Complete

0 Passed
0 Total
0% Pass Rate

If METTLE keeps rejecting you, or its results look systematically wrong, you can file a protocol appeal. Appeals are public, so leave out badges, tokens, and answers.