Runtime decisions beat prompt review
Prompt review is useful context. The durable control point is the moment an agent tries to read, write, run, fetch, or call a tool.
The prompt is not the boundary
A prompt can describe intent, but the risky part usually appears later: a shell command, a file write, a web fetch, or an MCP call. Reviewing the prompt alone leaves the policy engine guessing about paths, destinations, repositories, and tool arguments.
That gap matters because benign prompts can lead to risky actions after the model reads local context. The control point has to sit where intent turns into an operation.
Evaluate the action in context
Agent actions are easier to judge when they are normalized into concrete fields: tool name, command text, file path, MCP server, destination host, workstation, project, identity, and organization policy.
The runtime decision can then be boring on purpose: allow, warn, or deny. The verdict is not a vibe check. It is a policy result with evidence attached.
Record what would matter later
Security teams need a timeline they can defend after the fact. A runtime decision should capture enough detail to explain why an action was allowed or blocked without forcing an analyst to reconstruct the session from scattered logs.
That is why Agent Keeper treats Runtime Shield as an execution-layer control, not a prompt scanner with better marketing copy.