| code | No | FragGate or fabric code when present: FG-OK, FG-HALLUC-TOOL, FG-STUB, FG-LOCAL-ONLY, FG-UNKNOWN-OP, FG-GATE-REFUSE, FG-LAMB-REFUSE, or a module refuse such as MESH-* / AKM-*. | |
| door | No | Door name. The public door is fraggate. | |
| ran_in | No | Execution locale (for example aziel-runtime) when present. | |
| result | No | One hub product card: name, version, skill markdown, download, ops, skill_source. Unknown slug is unknown product — not a FragGate FG-HALLUC-TOOL envelope. | |
| status | No | HTTP-like status when present on wrappers (200 ok; 400+ error / refuse). | |
| display | No | Human-facing envelope. Show title and summary, then take the next input. | |
| receipt | No | Optional receipt, ledger tip, or TemporalLock/ForgeReceipts exit when the door stamped one. | |
| refusal | No | Explicit refuse object, code, or message when the door or engine refused. | |
| engine_op | No | Resolved engine op when present (often inside result). | |
| ledger_tip | No | Ask/refuse ledger tip when the door stamped one. | |
| provenance | No | Provenance / input packet when the pipeline attached one. | |
| session_id | No | Raw session id when session plumbing was used. Hidden unless the user asked for the chain. | |
| engine_slug | No | Resolved engine slug when present (often inside result). | |
| limitations | No | Capability limitations or Remain-OFF notes when present. | |
| engine_digest | No | 64-hex engine_digest when a true in-process engine ran (often inside result). | |