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Sign in with an SSH key

Sign the challenge below with your SSH key.

psyclyx-auth-v1:O5gwGauYmtPBh-XdK8vB1QEVC9PTVjUhXSRvit9DR2o=:1785969521384:XfTTQI2xQBj6lGxA1mBWto747a4XlkP5L6JhfprZUI0=

Run this command to sign:

printf %s 'psyclyx-auth-v1:O5gwGauYmtPBh-XdK8vB1QEVC9PTVjUhXSRvit9DR2o=:1785969521384:XfTTQI2xQBj6lGxA1mBWto747a4XlkP5L6JhfprZUI0=' \
  | ssh-keygen -Y sign -f ~/.ssh/id_ed25519 -n psyclyx-auth-portal

Sign in from a shell (one-liner that opens a magic link)

Run this in any shell where your SSH key lives. It prints a one-shot URL — open it to log in.

B=https://login.psyclyx.xyz/api/v0; C=$(curl -sS $B/challenge -Haccept:text/plain)
curl -sS "$B/redeem/$C" -Hcontent-type:text/plain \
  --data-binary "$(printf %s $C|ssh-keygen -Y sign -n psyclyx-auth-portal -f ~/.ssh/id_ed25519)"

Or sign in from a device you already trust

If you're already signed in elsewhere, enter this code there to authorize this browser:

2M9VUC

Or approve this code from a shell with your SSH key:

B=https://login.psyclyx.xyz/api/v0; CODE=2M9VUC; C=$(curl -sS $B/challenge -Haccept:text/plain)
curl -sS "$B/device-approve/$C?code=$CODE" -Hcontent-type:text/plain \
  --data-binary "$(printf %s $C|ssh-keygen -Y sign -n psyclyx-auth-portal -f ~/.ssh/id_ed25519)"

The code expires in 5 minutes; this page will redirect once it's authorized.

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