Verified facts
- Realtime turns a SQL query into a subscription updated with the data, with SSR, local writes and support for branching and scale-to-zero.
- The beta covers AWS us-east-1, us-east-2, eu-central-1 and ap-southeast-1. Agents can use the neon-realtime skill or MCP server.
- AI Gateway adds eleven models, including Haiku 5.5, GPT-6.1 Sol and Grok 4.7; access remains tied to Launch/Scale plans and prepaid credits.
- MCP can use a chosen Postgres role instead of the owner; get_connection_string is then disabled. run_sql_transaction is removed from read-only mode because it could write.
What changes
Reactive apps become easier to build; data access remains the sensitive point.
Practical implication
Check processing location and beta terms before entrusting sensitive data.
Availability
Belgium/EEA: eu-central-1 is among the announced Realtime regions; this does not prove all Gateway inference remains in the EEA.
Limits and uncertainty
Realtime regional coverage must not be extrapolated to other services. MCP permissions and latency were not tested.
