Streaming Security

CAST means Continuous-on-Authoring Security Testing.

The main point is simple: Cencurity Engine checks model output while it is still being generated.

Why it matters

Unsafe code can appear before it is ever pasted into a file.

That is why the engine works on the stream itself.

Three outcomes

• normal code output -> allow
• secret or token in output -> redact
• dangerous code like eval(...) -> block

Simple streaming model

model streams output
  -> engine inspects chunks
  -> safe output continues
  -> sensitive output is redacted
  -> dangerous output is blocked

Operational behavior

The engine docs describe stream-time behavior such as:

• SSE parsing and [DONE] handling
• cross-chunk scanning
• redact and block interception
• long-stream stability