CRX 101
Contact
POST

/auth/challenge

Body

Bearer token · optional

Bearer
Language
curl -X POST "https://app.crxfx.com/svc/relayer/auth/challenge" \
  -H "Content-Type: application/json" \
  -d '{
  "address": "0x0000000000000000000000000000000000000000"
}'
Response
Press Try It! to run the call and read the live response.

POST /auth/challenge is step 1 of login. It returns the exact message the wallet must personal_sign. The endpoint is public: no token is required.

  • Body: { "address": "0x…" }.
  • Returns: { "message": "Sign in to CRX relayer.\nAddress: …\nNonce: …\nExpires: …" }.
POST /auth/challenge