| name | ai-research |
| description | External evidence with citations via a 4-tier escalation (local → free MCPs → web/Exa → NotebookLM autonomous deep research, launched first / harvested last). Every claim sourced [N] or marked [unsourced]; output ends with 3 cited recommended directions. Trigger for 'what does the state of the art say about', 'compare options for', 'find sources on', 'investigate this question', 'research this'. Use for questions whose answer lives OUTSIDE the codebase. Not for codebase exploration; use /ai-explore instead. Not for refactors; use /ai-simplify instead. Not for business-logic debugging; use /ai-debug instead. |
| effort | mid |
| argument-hint | [query] [--depth quick|standard|deep] [--reuse-notebook=id] [--persist] |
| model_tier | sonnet |
| mirror_family | antigravity-skills |
| generated_by | ai-eng sync |
| canonical_source | .claude/skills/ai-research/SKILL.md |
| edit_policy | generated-do-not-edit |
Research
Multi-tier, multi-source, citation-first research with persistent artifact reuse. Replaces ad-hoc WebSearch with a disciplined escalation. Invariants:
- Async-first Tier 3. NotebookLM autonomous deep research launches FIRST at T0 (background subagent) so its slow job overlaps the fast tiers, then is harvested LAST with a bounded wait.
- Citation hard-rule. Every external claim carries
[N] or is marked [unsourced].
- Always 3 directions. Output ends with EXACTLY 3 cited recommended directions.
- Fail-soft capability detection. Every external tier (NotebookLM, Context7, Exa, MS Learn, Tavily) is capability-detected; absent/unauthenticated tools are skipped silently, recorded in
degraded_sources, and NEVER error the run (D7). Tier 3 is gated by notebooklm doctor (exit 0 = available).
- Reuse. Runs persist to
.ai-engineering/runtime/research/<topic-slug>-<YYYY-MM-DD>.md (deep report + notebook_id) so later sessions short-circuit at Tier 0 or harvest via --reuse-notebook.
Process
Order is the execution timeline, not a strict gate sequence — Tier 3 is launched first (step 2) and harvested last (step 6), running concurrently with fast Tiers 0-2.
- Classify query —
handlers/classify-query.md: decide which Tier 1 MCPs apply (library → Context7; Azure/Microsoft → MS Learn; real-world-code → gh search; explicit URL → mark for fetch). Tier 3 is NOT gated here — it is default-on when available.
- Tier 3 launch (T0, background, default-on) — Launch half of
handlers/tier3-notebooklm.md. The notebooklm doctor gate runs INSIDE the background subagent before any create_notebook/add_research; non-zero exit → subagent degrades at T0 (warning, no blocking banner) and the main agent proceeds on Tiers 0-2. When available, launch the deep-research job FIRST as ONE DETACHED CLI command: notebooklm source add-research "<query>" -n <notebook> --from web --mode deep --import-all --timeout <N> --json. --import-all imports discovered sources; the detached job outlives the run. No flag enables it (default-on); absent/unauthenticated → degraded, recorded, never raised.
- Tier 0 — local —
handlers/tier0-local.md: search prior research artifacts, LESSONS.md, and framework-events.ndjson for prior /ai-research invocations. On ≥3 relevant hits the agent MAY short-circuit the fast tiers and synthesize from local context (Tier 3 is still harvested in step 6).
- Tier 1 — free MCPs (parallel) —
handlers/tier1-free-mcps.md: invoke Context7, MS Learn, gh search code/repos IN PARALLEL when the classifier marks them applicable AND available. Dedup by URL/path; absent sources → degraded_sources.
- Tier 2 — web (concurrent fan-out) —
handlers/tier2-web.md: invoke web search + fetch in parallel when Tier 1 yields <5 high-quality hits, or the query has an explicit URL. EVERY available provider runs concurrently — Tavily (mcp__tavily__tavily_search / tavily_extract), Exa (mcp__exa__web_search_exa / web_fetch_exa), built-in WebSearch/WebFetch — merged and deduped by URL, tie-break Tavily > Exa > built-in (D-174-01/03). Each absent provider → degraded_sources ("tavily", "exa"); a provider that raises or returns zero records its tool but never suppresses others (D-174-04 supersedes D-172-02 fall-through). Honor --allowed-domains / --blocked-domains.
- Tier 3 harvest (bounded wait) — Harvest half of
handlers/tier3-notebooklm.md. After Tiers 0-2 finish, do ONE blocking bounded wait on the detached job (the CLI's native wait, bounded by AIENG_RESEARCH_NLM_WAIT_SEC, default 300s, ceiling 900s — no poll loop). On completed: parse --json for report_markdown + discovered/imported sources. On timeout: the detached --import-all job keeps running — do NOT kill it; degrade and preserve notebook_id. On failed/auth_required: degrade gracefully. A later --reuse-notebook=<id> harvests the finished report. Detached deadline = AIENG_RESEARCH_NLM_DEEP_TIMEOUT_SEC (default 1800s) mapped to CLI --timeout.
- Synthesize with citations + 3 directions —
handlers/synthesize-with-citations.md. Merge/dedup NotebookLM-discovered sources with Tier 0-2 sources; every external claim carries [N] or [unsourced]; end with EXACTLY 3 individually-cited directions. Validator regex \[\d+\]|\[unsourced\] must match ≥once per claim paragraph and per direction; on failure retry with a stricter system message (max 2 retries).
- Persist artifact —
handlers/persist-artifact.md. Write .ai-engineering/runtime/research/<topic-slug>-<YYYY-MM-DD>.md with frontmatter (query, depth, tiers_invoked, sources_used, notebook_id, created_at, slug), the Question/Findings/Sources/Notebook Reference sections, and an optional ## Deep Research Report when the harvest completed. Auto-persist when Tier 3 was invoked; opt-in via --persist otherwise.
CLI Flags
- Tier 3 is default-on when available — no flag enables it. It launches whenever
notebooklm doctor exits 0 (D-175-04); the old source-count / comparative heuristics are gone (count is unknowable at T0).
--depth quick|standard|deep (default standard). Controls Tier 0-2 escalation only: quick = Tier 0+1; standard adds Tier 2; deep widens the fast tiers. Does NOT gate Tier 3.--reuse-notebook=<id> (opt-in). Re-attach to an existing notebook (CLI -n <id>) and harvest its report instead of creating one. Primary use: a prior run whose harvest timed out persisted notebook_id while the detached --import-all job kept running — this retrieves the now-finished report (AC6).--persist (opt-in). Forces persistence even when Tier 3 was not invoked (Tier-3 runs auto-persist).--allowed-domains a.com,b.com / --blocked-domains x.com,y.com — pass-through to every available provider (Tavily, Exa, built-in).
Output Contract
Synthesized response in agent context PLUS, when persisted, a Markdown artifact at .ai-engineering/runtime/research/<topic-slug>-<YYYY-MM-DD>.md. The response ALWAYS ends with ## Recommended Directions of EXACTLY 3 strategic directions, each cited [N] or [unsourced] (spec notebooklm-async-tier3 D8/G7, AC5). Format:
## Question
<verbatim user query>
## Findings
<paragraphs with inline [N] citations or [unsourced] markers>
## Recommended Directions
1. **<title>** — <1-2 line rationale> [N]. Trade-off: <cost/risk>.
2. **<title>** — <rationale> [N]. Trade-off: <cost/risk>.
3. **<title>** — <rationale> [unsourced]. Trade-off: <cost/risk>.
## Sources
1. (title, url, accessed_at)
2. ...
## Notebook Reference
<NotebookLM notebook_id if Tier 3 was launched; "_(none)_" otherwise>
## Deep Research Report # OPTIONAL — only when the NotebookLM
<verbatim deep-research report> # bounded harvest completed within the wait window
All sections except ## Deep Research Report are always present; it is appended only when the harvest completed (non-empty report_markdown). On timeout it is absent but notebook_id is recorded so a --reuse-notebook=<id> follow-up retrieves it.
Common Mistakes
- Skipping Tier 0 and going straight to web search (defeats reuse).
- Claims without
[N] / [unsourced] markers (defeats the citation hard-rule).
- Omitting
## Recommended Directions, emitting other than EXACTLY 3, or leaving one uncited (violates AC5).
- Treating an absent tool as a hard failure — capability detection is fail-soft; a run MUST never error (D7).
- Running NotebookLM synchronously instead of launching it first in a background subagent (defeats the async overlap).
- Discarding
notebook_id on harvest timeout (loses the --reuse-notebook follow-up path).
- Not deduping Tier 1 results, or failing to merge/dedup NotebookLM-discovered sources with Tier 0-2 sources at synthesis (Context7 /
gh search / NotebookLM can return overlapping URLs).
Examples
Example — deep dive (NotebookLM default-on) persisted for reuse
User: "deep research on event-sourcing vs CQRS for fintech ledgers, save it for next time"
/ai-research "event sourcing vs CQRS for fintech ledgers" --depth deep --persist
NotebookLM launches at T0 (default-on) and overlaps Tiers 0-2 (Tavily ‖ Exa ‖ built-in WebSearch fan out concurrently). The harvested report + discovered sources fuse with tier sources; the artifact at .ai-engineering/runtime/research/<slug>-<date>.md carries ## Deep Research Report and notebook_id, so future runs short-circuit at Tier 0. NotebookLM absent → run completes on Tiers 0-2, degraded source noted. Prior harvest timed out → --reuse-notebook=<id> retrieves the now-finished report (AC6).
Integration
Called by: user directly, /ai-brainstorm (interrogate handler). Calls: tier0–tier3 handlers (Tier 3 launched first / harvested last), synthesize-with-citations.md, persist-artifact.md. Produces: .ai-engineering/runtime/research/<slug>-<date>.md. See also: /ai-brainstorm (consumes research as evidence).
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