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Audit records

Corteza records model turns, tool decisions, provider requests and room deliveries as linked events. Each writer owns its JSONL stream. A warm worker keeps its stream across jobs, with the job ID recorded on each applicable event. Child processes write separate streams and carry parent turn/call references. In-process summaries, reviews, refinements and memory flushes reuse their caller’s writer and payload store, with separate turn IDs. Synchronous archival (archival.async: false) also reuses that writer for dispatch/exit records; its model subprocess owns a separate stream. In the default async path, the background process writes dispatch/exit records to its own stream, and its model subprocess writes another. Those records link back through origin; the original parent stream has no forward dispatch pointer. Each async archival call therefore creates two new streams. There is no global sequence and no shared-file append protocol. The initial reservation directory is removed after the first successful write; the stream file then guards that identity. A crash before the first write can leave a reservation.

The history journal remains the provider-native conversation record. Audit streams live in its audit/ directory, or in the package data audit/ directory when no journal is configured. journal_enabled: false does not disable accounting. Set audit.enabled: false explicitly to disable it.

Reading and accounting

turn() returns an audit reference containing an absolute stream path and turn ID. audit_read(path) reads the stream through the auto-log decoder and returns records plus malformed-line counts/locations, torn_tail, malformed_tail, and interior_damage. Its default view is redacted; use redact = FALSE only when an exact restricted view is needed. Additional known values can be supplied in secrets. Pattern-based filtering cannot identify every credential. Blank lines count as malformed and retain their original line positions.

Sum canonical turn_end usage once per turn ID. Job outcomes, monitor verdicts and transcripts preserve their compatibility usage fields and mark them usage_source: derived, with originating turn references. Provider request events are a breakdown, not another charge to add. Auxiliary summaries and consultations own their own canonical turns, linked to their parent. Known transcript usage uses llm.api field names (input_tokens, output_tokens, total_tokens, cache counts and cost) and is explicitly tagged usage_format: llm.api. The surrounding transcript follows the pi-style message envelope; the usage block is not the pi input/cacheRead schema.

With llm.api 0.1.9.15, usage comes from observed requests, including final tool-less replies and partial requests before a fallback. Request records keep raw usage separately from normalized counts. Requested and reported models are distinct. A failed attempt without provider usage makes coverage partial; missing usage is not invented as zero. Costs are estimates tied to the llm.api version and its bundled table/calculation fingerprints. Earlier llm.api remains supported with per-request coverage unavailable. An instrumented client that emits no requests is marked unobserved, as happens with some test adapters. Only complete, successfully written request coverage replaces turn()$usage with the normalized request sum. With partial coverage the reported total is preserved for /spent, jobs and other callers. turn_end stores reported_usage and request_usage for reconciliation and usage_basis identifies its canonical usage. These alternate totals must not be added together. An escaping error without a reported total can retain the known request sum or checkpoint usage.

A missing terminal record means unresolved completion. It does not establish that no tool effect or model charge occurred. A killed worker’s ordinary job outcome can report indeterminate effects while its child stream ends at start.

Immutable requests and output

Request starts point to a manifest containing the final serialized adapter body, system/instructions, tool schema, ordered message objects and effective settings. This includes provider-added tools and cache annotations. Authentication headers are excluded. SHA-256 references remain valid after in-place history growth, context edits, compaction and restart. Journal sequence/length is only a navigation aid because the live snapshot can change within a sequence.

audit_payload_read(ref) checks the content hash before returning a view. Missing, expired, omitted or damaged payloads are explicit errors. Native history and stored payloads retain their exact contents; redaction never rewrites them. The full captured text of a tool result is recorded before the output cap, with the admitted preview separately identified. Supervised R evaluators write their own linked stream before their local cap; R object summaries also preserve the full printed output. This records captured output, not arbitrary hidden process state or an execution sandbox.

Streams, payloads, transcripts and traces are private on creation. They can contain sensitive data. Room displays keep their existing redaction and summary/detail policy; audit data is not automatically sent to a room. Any same-user code with filesystem access can still tamper with records. Hashes detect payload damage but do not establish tamper-proof provenance.

Bounds, pins and failures

Capture defaults are 16 MiB per full tool result, 256 MiB per turn, and 2 GiB per writer’s payload store. Set audit.limits.result_bytes, turn_bytes and quota_bytes to change them. Each writer deduplicates identical bytes by hash; quotas are not a machine-wide bound across restarts. Supervised captures charge their bytes to the parent turn’s remaining allowance. Omission reasons are per_result, per_turn, quota or capture_failure. Write failures and quota omissions each notify once per process, independently of which occurs first. Payloads already captured in the current turn skip a second on-disk hash check and mtime update; reads always verify their content hash, and reuse in another turn verifies it again.

audit_payload_pin(ref) exempts a payload from expiry. Pins still count toward quota, so a full pinned store causes future capture omissions. Explicit audit_payload_expire(ref$store, days = 30) previews expiry using last-capture time. Passing dry_run = FALSE logs expiry intents/results and removes eligible unpinned bytes. Missing end records leave maintenance unresolved too. No expiry runs automatically, and event streams are not deleted by this function. A 365-day event-retention horizon is planning guidance until an explicit event-retention policy is selected.

New audit writes are observational: they emit one process notice on failure, count missed events, and append a gap on recovery. A recording failure cannot retry a provider request or resend a room message. If the process dies before recovery, the lost count is unknown. Existing journal rewrites, job intent and approval commits keep their required-write behavior.

Records support later investigation and evaluation. Replay, scoring and derived signals such as user corrections remain separate analysis work.

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.