Agent-Readiness Grade / Sites / projecteuler.net / Claim
Claim the scorecard for projecteuler.net
Free, no account, no email. Prove you control projecteuler.net by publishing a token; you then get a private link with the grade history and a re-grade button (one per hour), and the badge reads "CLAIMED · D". A claim does not change the score.
1. Your token for projecteuler.net
agx-37e86c3eb613fdc9a36d4e8ee9c9f458
2. Publish it, either way
A file. Serve the token as plain text at https://projecteuler.net/.well-known/agentexchange-claim.txt (HTTP 200, not redirected off the host; a www. variant is fine). One token per line if the file already carries other claims.
agx-37e86c3eb613fdc9a36d4e8ee9c9f458
Or a meta tag in the <head> of https://projecteuler.net/:
<meta name="agentexchange-claim" content="agx-37e86c3eb613fdc9a36d4e8ee9c9f458">
3. Verify
Nothing is stored until the proof is found. Removing the file later does not unclaim the profile; re-verify at any time to get a fresh link. Limit: 10 verification attempts per hour per IP. Scripted use: curl -X POST https://grade.agentexchange.work/site/projecteuler.net/claim.