nisse-core records each model call of every agent into a file beside its state store (<state>.calls.db), for the status page (L7, X6): - the request body exactly as sent (never headers), the raw response with its reasoning, the model asked and the one that answered, time, tokens and llama-server's own prompt reuse (timings.cache_n); - its work item, role, run and purpose: Driver.run and nisse-dev's delegation loop open runs, nested; compaction, expert consults, the classifier and the go-ahead reader label their calls; - provenance, worked out in BudgetedClient by comparing the events at each stage: each event sent with its log id and content as sent, which a compaction replaced, which fitting shortened (by how much) and dropped. Content is stored once by hash, compressed. It is diagnostic only: the agent never reads it, a failed write is logged once and recording stops while the call goes on, and the file is deleted when the agent starts, so its layout never migrates; CallReader refuses a layout it doesn't know. While recording, the system prompt ends with one sentence saying so. `call_record: false` in either agent's YAML turns it off. The benchmark records each run beside that run's own state store, and `--keep-runs DIR` keeps both for the page. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01J5Utyfzw7gF7UhjRDEtjTk