# Review by Andrej Karpathy (Round 1)

Now I have a complete picture. Let me write my review:

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## Review as Andrej Karpathy

I've thoroughly reviewed the Intent Router implementation against the PRD requirements. From an AI/LLM systems perspective, this implementation demonstrates good engineering principles but has significant incompleteness issues.

### What's Working Well (Tasks 1-5)

**The core router module is well-designed:**

1. **Structured output with JSON** — The `_parse_router_response()` function properly handles JSON parsing with fallback for markdown-fenced responses. This is exactly the right approach for LLM outputs.

2. **Fail-open behavior** — On any parse error or unknown category, it defaults to `CODE_CHANGE`. This is the correct safety design for stochastic outputs — when uncertain, take the conservative action.

3. **Two-stage architecture** — The separation between router (no tools, $0.05) and Q&A agent (read-only tools, $0.50) is architecturally sound. This minimizes the blast radius if the LLM is prompt-injected.

4. **Prompt structure** — The system prompt in `_build_router_prompt()` is clean, provides explicit JSON format instructions, and includes fail-open guidance. Good prompt engineering.

5. **Input sanitization** — Using `sanitize_untrusted_content()` on user input before embedding it in prompts. Essential for security.

6. **Q&A agent sandboxing** — The `answer_question()` function correctly limits tools to `["Read", "Glob", "Grep"]`. This is the right level of autonomy for a read-only Q&A agent.

### Critical Missing Implementation

**Tasks 6-10 are NOT implemented:**

- **No `--no-triage` CLI flag** — PRD FR-6 requires this, but it's not in cli.py
- **No routing integration in `run()` or REPL** — The router exists but is never called
- **No audit logging** — FR-8 requires logging to `.colonyos/runs/triage_<timestamp>.json`, but `_log_router_decision()` doesn't exist
- **No Slack refactoring** — Task 8.0 to share logic with slack.py is not done
- **No documentation updates** — README hasn't been updated

The tasks file shows all tasks as `[ ]` (unchecked), confirming this is incomplete.

### From an LLM Engineering Perspective

**Concerns with current implementation:**

1. **No structured output validation** — While JSON parsing handles malformed responses, there's no schema validation (e.g., Pydantic). For production, I'd want to ensure category is actually one of the four valid values at the type level.

2. **Confidence threshold is configurable but never enforced** — The config has `confidence_threshold: 0.7` but since CLI integration isn't done, it's not being used.

3. **Model selection hardcoded** — The router uses haiku, but this should be validated against the config's `router.model` setting at runtime.

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VERDICT: request-changes

FINDINGS:
- [src/colonyos/cli.py]: Missing `--no-triage` flag (FR-6) and router integration (FR-4). The router module exists but is never invoked from the CLI.
- [src/colonyos/router.py]: Missing `_log_router_decision()` function for audit logging (FR-8). No logging to `.colonyos/runs/triage_<timestamp>.json`.
- [src/colonyos/cli.py]: REPL routing (Task 7.0) not implemented — `_run_repl()` doesn't call `route_query()`.
- [src/colonyos/slack.py]: Slack triage refactoring (Task 8.0) not implemented — `triage_message()` is not updated to use the shared router.
- [cOS_tasks/]: All tasks marked as incomplete (`[ ]`) despite claiming tasks 1-5 are merged to main.
- [README.md]: No documentation for router configuration or `--no-triage` flag.

SYNTHESIS:
The implementation demonstrates solid LLM engineering fundamentals: fail-open behavior, structured JSON output parsing, two-stage privilege separation, and input sanitization. However, it's approximately 50% complete. The core router infrastructure (tasks 1-5: RouterCategory enum, RouterResult dataclass, route_query(), answer_question(), RouterConfig, qa.md template) is properly implemented and tested. But the critical integration layer (tasks 6-10: CLI `--no-triage` flag, routing in `run()` and REPL, Slack refactoring, audit logging, documentation) is entirely missing. The router exists as a well-tested library that nothing calls. From a model utilization perspective, the prompts are well-structured and the tooling constraints (no tools for classification, read-only tools for Q&A) represent appropriate autonomy levels. To ship this feature, the CLI integration must be completed so users actually benefit from the routing capability.
