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Login

POST /api/auth/login

{
  "email": "user@company.com",
  "password": "your-password"
}
Response: 
{
  "token": "tok_abc123...",
  "email": "user@company.com",
  "tenantId": "uuid-here",
  "expiresAt": "2026-03-16T20:00:00Z"
}

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Signup

POST /api/auth/signup

{
  "company": "Acme Corp",
  "email": "admin@acme.com",
  "password": "min-8-characters"
}
Response: 
{
  "status": "created",
  "tenantId": "uuid-here",
  "email": "admin@acme.com",
  "plan": "trial",
  "apiKey": "cg_abc123...",
  "token": "tok_xyz789...",
  "message": "Welcome to ChangeGuard! Save your API key — it cannot be retrieved again."
}
The apiKey is returned only once. Save it immediately.

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Verify Token

POST /api/auth/verify

{ "token": "tok_abc123..." }

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Refresh Token

POST /api/auth/refresh

{ "token": "tok_abc123..." }
Returns a new token. The old token is revoked. Sessions last 8 hours and auto-refresh when less than 10 minutes remain.

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Change Password

POST /api/auth/password
Authorization: Bearer TOKEN

{
  "currentPassword": "old-password",
  "newPassword": "new-password-min-8"
}