Auth0 for AI Agents (Token Vault) vs Descope Agentic Identity Hub

Auth0 for AI Agents (Token Vault)

Standard grants throughout, RFC 8693 token exchange, CIBA with RAR and DPoP. Only works when Auth0 is the identity provider for your users.

Descope Agentic Identity Hub

Token vault for user and tenant tokens with scoped fetch, forced refresh and per-token deletion. No tool catalogue, so you write every provider call yourself.

Auth0 for AI Agents (Token Vault)

1. Turn off refresh token rotation on the application before using the refresh token exchange
2. Treat a 401 from the exchange as a missing connected account and send the user through the Connected Accounts flow
3. Pass login_hint when a user has linked two accounts from the same provider
4. Use CIBA for purchases or deletes and wait for the approval instead of asking in chat
5. Read X-RateLimit-Reset on a 429 and back off until then

Descope Agentic Identity Hub

1. Sign the agent in as its own OAuth client and let Policies scope it, instead of shipping a management key
2. Treat a 404 from the token endpoint as a missing connection and send the user to the connect URL
3. Back off for the full window on a 429, 60 seconds for most management endpoints
4. Ask for a tenant token, not a user token, for organisation-wide API keys
5. Budget monthly active tokens, since every token fetched and used counts once a month