Agent-Readiness Grade / Sites / chessbase.com / Claim
Claim the scorecard for chessbase.com
Free, no account, no email. Prove you control chessbase.com 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 chessbase.com
agx-38c64253c0609d1835f7ceb3b05926be
2. Publish it, either way
A file. Serve the token as plain text at https://chessbase.com/.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-38c64253c0609d1835f7ceb3b05926be
Or a meta tag in the <head> of https://chessbase.com/:
<meta name="agentexchange-claim" content="agx-38c64253c0609d1835f7ceb3b05926be">
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/chessbase.com/claim.