Closes the loop on "without full tracking the system can't make decisions"
(user pushback on partial coverage). Three gaps that left the inference
layer blind are now wired:
GAP #1 — agent toolStats / token counts / cache hits captured
================================================================
`agent-outcome-backfill.sh` now appends one JSONL row per spawn to
`~/.claude/memory/time-metrics/agent-toolstats.jsonl` with:
agent_id, outcome, stubs, ts,
tool_use_count, duration_ms, tool_stats {Read:N, Bash:M, ...},
tokens_in, tokens_out, cache_read, cache_write
Sidecar journal (no schema migration). Production payload's
.tool_response.totalToolUseCount / totalDurationMs / toolStats / usage
fields land directly. Smoke-tested with synthetic spawn — row written.
GAP #2 — skill_invocations table actually receives writes
================================================================
The `skill_invocations` table (schema v8) had 0 rows because no caller
existed for `skill_metrics::record_invocation`. Added two pieces:
(a) `kei-ledger record-skill <name> --success {0|1}` CLI subcommand
Mirrors record-cost; same dispatch shape. Optional `--agent-id`,
`--trajectory-id`, `--duration-ms`, `--db`. Validates non-empty
name + duration ≥ 0. Outputs `{"ok":true,"skill":"...","ts":N}`.
(b) `hooks/skill-record.sh` — PostToolUse:Skill hook. 50 LOC POSIX.
Detects Skill tool calls, derives success heuristic from
tool_response (exit_code / status / content non-empty), shells
out to `kei-ledger record-skill`. Bypass via SKILL_RECORD_BYPASS=1.
83 kei-ledger tests pass (16 unit + 67 integration). Smoke-tested
end-to-end: `kei-ledger record-skill test-skill --success 1` inserts
a row with correct fields.
Phase D nightly skill-metrics decisions (archive if unused N days,
re-extract if success<60% over M days, validated if >20 calls + >90%
success) now have data to consume.
GAP #3 — numeric-claims.jsonl receives every evidence-tagged claim
================================================================
RULE 0.18 mandated three markers `[REAL:]` / `[FROM-JOURNAL:]` /
`[ESTIMATE-HTC:]` on every numeric/duration/cost claim, but no hook
appended valid claims to the journal — the calibration data RULE 0.18
promised never accumulated.
`hooks/numeric-claims-record.sh` — Stop hook, 140 LOC POSIX. Reads
transcript_path from stdin, locates the last assistant message via
recursive flatten (same pattern as agent-outcome-backfill.sh after
the production-payload-shape fix), regex-extracts every `<phrase>
[<TIER>: <pointer>]` triple, appends one JSONL row per claim.
Idempotent within 1-second window to avoid double-recording on
repeat Stop fires. Bypass via NUMERIC_CLAIMS_RECORD_BYPASS=1.
Smoke test: synthetic transcript with 3 markers (REAL + ESTIMATE-HTC
+ FROM-JOURNAL) produced exactly 3 well-formed JSONL rows.
Settings.json
================================================================
- PostToolUse:Skill matcher created (or augmented if already
present) with skill-record.sh.
- Stop:* matcher gains numeric-claims-record.sh after the existing
chain (stop-verify, task-timer, session-end-dump, extract-task-
durations, chat-numeric-postflag, affect-threshold-check,
enrich-from-jsonl).
What this does NOT do (deferred):
- Backfill `skill_invocations` from past traces (history started
today; Phase D cohort builds forward from now).
- Migrate the agent toolStats sidecar JSONL into a proper ledger
column. Append-only file is fine for the current scale.
- Refactor main.rs (now 233 LOC, was 212; pre-existing CP debt
flagged by skill-record agent — separate cleanup PR).
=== STATUS-TRUTH MARKER ===
shipped: functional
stubs: 0
cargo-check: PASS
behaviour-verified: yes
follow-up-required:
- kei-ledger main.rs Constructor Pattern split (212→233 LOC)
- Verify in next session: skill_invocations gets rows from real
Skill tool use; numeric-claims.jsonl gets rows from real assistant
messages with markers
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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