| MCP | Search, hybrid search, source preview, triage rendering. | Shell, Git write, kubectl mutation, evidence writes. | Agents need context, not production power. |
| HARP | Evidence rendering, citation ranking, policy labels, evals. | Autonomous remediation and source-of-truth task decisions. | HARP is memory and evidence, not the operator. |
| Nero-Camp | Task state, source records, timeline, approval, closeout. | Treating HARP output as executable authority. | Nero records the human decision. |
| OpenRAG | Semantic indexing and retrieval. | Direct agent access that bypasses HARP policy. | HARP mediates retrieval and fallback behavior. |
| LiteLLM | Classification and summarization when policy allows. | Replacing citations or final decisions. | Model output must remain grounded and governed. |