Mine recent local coding-agent transcripts for memories worth keeping, using the `vestige_scan_sessions` MCP tool. Fire at session start (to catch up on what happened in prior sessions), when the user says "scan my sessions", "what did we work on recently?", "catch up from my transcripts", "ingest recent sessions", "mine my history", or when picking up a project after a pause. The tool hands you redacted, cursor-advanced turns from this project's Claude Code and Codex transcripts; you extract decisions/notes/preferences/questions inline and file each via `vestige_propose_candidate`. Opt-in — requires `[mcp] allow_scan_sessions = true` in `.vestige/config.toml`. Candidates land in the assimilation inbox for human review, never as durable memories directly.
Use this skill when you need the raw source receipts for a memory or candidate — the typed evidence rows, not the narrative walk. Fire when the user says "what sources back mem_X?", "show me the source receipts", "list the sources for mem_X", or "filter sources by kind agent_session". Use `vestige-why` when you want the full provenance narrative including events; use this skill when you want the tabular source index only.
Use this skill when you want to audit what queries the agent or CLI has run against project memory. Fire when the user says "what queries did the agent run?", "show recent trace events", "did anyone search for X recently?", or "list traces by caller mcp". Every vestige search, recall, expand, and context call writes a query_events row automatically — this skill surfaces them. Use vestige-trace-show to expand a single trace.
Use this skill to re-run a stored trace against the current memory store and diff the results against the original — answering "would the agent get the same answer today?". Fire when the user says "re-run trace_X", "replay that search", "diff trace_X against current state", or "did the answers drift?". Read-only: writes a NEW query_events row tagged with replay_of; never mutates the original trace or any memory. provider_match=false flags embedding drift.
Use this skill when you want to expand a specific trace to its full detail — the query text, mode requested vs resolved, provider, result IDs, and scores. Fire when the user says "expand trace_X", "show me what trace_X returned", or "what did that search find?". Use vestige-trace-list first to find the trace_id, then this skill to inspect one in full.
Use this skill when you want to know where a memory came from, need to explain its provenance, or must audit what was captured and when. Fire when the user says "where did this come from?", "explain that memory", "why do we have mem_X?", "show provenance for X", "what's the source of mem_X?", or "trace this memory back". Works for both memories and pre-approval candidates. Soft-deleted memories are included — provenance is always inspectable.
Review Vestige code against this repo's CODESTYLE.md, CLAUDE.md, and PRD — naming, progressive disclosure, error handling, agentic patterns, and the seven hard architectural rules (soft-delete only, project-scope boundary, immutable migrations, one-way crate deps, newtype IDs, MCP intent-not-mechanics, no daemon). Use when the user says "vestige-review", "review this", "review my branch", "check my code", "look over this PR/diff", "roast this", "is this ready to merge", or after finishing work in any Vestige crate. Prefer over the global code-review skill inside this repo — it layers Vestige-specific rules on top of the style guide and produces findings grouped by severity (blocker / major / minor / nit) with file:line citations and concrete fixes.
Fires automatically — without the user asking — when the conversation produces something a future session would want. Watch for decisions ("we'll go with…", "settled — X"), preferences ("I prefer…", "always…", "never…", "make sure to…"), open questions ("TBD", "unclear whether…", "follow-up:"), TILs / aha moments, gotchas ("careful — X breaks Y"), smells, workarounds, root causes, and broken assumptions. Probe `vestige recall` first to dedup, then dispatch to `vestige <subcommand> add`. Surface: `Recorded <kind> mem_<ULID>.` Do not wait for "remember this".