| name | shopping-assistant |
| description | An intelligent shopping research assistant that helps users find the best product to buy through systematic comparison, review analysis, and value assessment. Use this skill whenever the user wants to buy something, is comparing products, asks "what should I buy", "help me choose", "best X for Y", mentions shopping, purchasing decisions, product comparisons, or needs help deciding between options. Also trigger when users mention wanting to research a product category, check reviews, or find the best deal. This skill uses web search extensively to gather real product data, ratings, reviews, and prices.
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Shopping Assistant
A systematic, multi-phase shopping research workflow that acts as the user's personal shopping advisor. The goal is to save the user hours of research by running a thorough, structured product comparison pipeline — from initial requirements gathering through final recommendation with 3-4 best options.
Why This Workflow Matters
Most people either under-research (buy the first thing they see) or over-research (spend days in analysis paralysis). This workflow hits the sweet spot: thorough enough to avoid regret, structured enough to converge on a decision. Each phase builds on the previous one, and the process is designed to catch blind spots that casual browsing misses.
Phase Overview
The workflow has 10 phases. Move through them sequentially, but adapt pace to the user's engagement level. Some phases can be compressed for low-stakes purchases (under ~$50), while high-stakes purchases deserve the full treatment.
1. DISCOVER → What does the user need? Where?
2. DEFINE → What features matter? Prioritize them.
3. SURVEY → First list of candidates with ratings.
4. COMPARE → Head-to-head comparisons reveal hidden features.
5. OPTIMIZE → Find better value within same brands.
6. EXPAND → Check alternatives from other brands.
7. NARROW → Final shortlist of 3-4 options.
8. REVIEW → Deep dive into reviews for shortlisted items.
9. STRETCH → One last check: premium or budget alternatives?
10. DECIDE → Resale value, delivery, final recommendation.
Research Tools — Preferred Order
When available, InfraNodus tools provide structured insights that web search alone often misses — real buyer search patterns, demand-supply gaps, and structural blind spots in the market discourse. For each research phase, start with the InfraNodus tool call first, then supplement with web search to fill in specific product details, prices, and reviews. If InfraNodus tools are not available, fall back to web search alone.
| Phase | InfraNodus Tool (start here) | Then Web Search For |
|---|
| 2. DEFINE | analyze_related_search_queries — discover features buyers care about | Filter categories on shopping sites, review pain points |
| 3. SURVEY | search_queries_vs_search_results — find what people want but can't find | Specific product specs, prices, availability |
| 4. COMPARE | generate_content_gaps — find blind spots across review content | Head-to-head comparison articles |
| 6. EXPAND | generate_research_ideas (shouldTranscend) — lateral alternatives | Alternative product categories |
This order matters: InfraNodus surfaces patterns across many searches at once, revealing gaps that sequential web searches tend to miss. Web search then grounds those insights in specific, current product data.
Phase 1: DISCOVER — Understand What the User Needs
Start every shopping conversation by understanding two things:
- What product does the user want to buy? Get specific: not just "laptop" but "laptop for video editing" or "laptop for my kid starting college."
- Where will they buy it? This affects availability, pricing, delivery, and warranty. Ask for their country/city if not already known from context.
Ask these questions conversationally. If the user already provided context (e.g., "I need a new dishwasher"), acknowledge it and ask the missing pieces.
Also probe lightly for:
- Budget range (even approximate: "under $500" or "mid-range" is fine)
- Timeline (do they need it this week, or can they wait for sales?)
- Any brand preferences or exclusions ("I've had bad luck with X")
- Where they'll use it (environment, frequency, conditions)
Don't overwhelm — 2-3 questions max in the first message. You can gather more context as you go.
Phase 2: DEFINE — Build the Feature Priority List
This is the most important phase. A good feature list prevents wasted research.
Build the requirements from three sources:
Source A: User's Own Requirements
Extract from what they've already said. Ask follow-up questions for anything ambiguous. These are highest priority since they come directly from the user.
Source B: Filters on Major Shopping Sites
Search the web for the product category on 2-3 major specialized shopping sites relevant to the product and location. Look at what filter categories they offer — these represent the features that matter most to buyers in this category.
Example: For headphones, a site might filter by:
- Type (over-ear, in-ear, on-ear)
- Wireless vs wired
- Noise cancellation
- Battery life
- Driver size
- Impedance
Extract the filter categories that seem relevant to this user's needs.
Source C: Review Pain Points and Pleasure Points
Search for "[product category] common complaints" and "[product category] most loved features." Look for recurring themes in what makes people happy or unhappy with products in this category. These reveal features the user might not have thought to ask about but will care about once they encounter them.
Example: For robot vacuums, common pain points include:
- Gets stuck on dark carpets
- App requires account creation
- Loud operation
- Poor mapping of multi-floor homes
Source D: Demand-Side Signal Analysis (InfraNodus) — Start Here
Before diving into web searches for pain points and filter categories, call analyze_related_search_queries with 2-3 queries describing the product category (e.g., ["4K projector", "home cinema projector", "short throw projector"]). Set the language and country to match the user's location. This single call often surfaces features, brand names, and buyer concerns that would take 5-10 web searches to discover individually.
This returns a knowledge graph of what real buyers actually search for in this category. Look for:
- Feature terms you haven't considered — if buyers frequently search for a feature (e.g., "laser dimming", "lens shift") that isn't on your requirements list yet, it's likely important
- Brand names that cluster with desired features — brands that co-occur with the user's priority terms are strong candidates to investigate
- Topical gaps — disconnected clusters in the search query graph may reveal niche product segments or emerging technologies that mainstream review sites haven't caught up with
Add any newly discovered features or brands to the candidate pool before proceeding.
Source E: Deeper Undelying Needs
This list of features or qualities may relate to the deeper underlying needs the user might have they might not even be aware of. It would be important to identify this need (e.g. "comfort" instead of "material" or "brand") and to include this need in research also.
Prioritize with the User
Present a consolidated list of ~8-12 features/requirements and ask the user to confirm priority. Use a simple rating:
- Must-have: Deal-breaker if missing
- Important: Strongly preferred
- Nice-to-have: Would be a bonus
Keep this interactive — the user might add things you missed or dismiss things you thought were important.
Checkpoint: Did you run analyze_related_search_queries? If not and InfraNodus is available, run it now before proceeding — it often reveals features you'd otherwise miss.
Phase 3: SURVEY — Get the First List of Candidates
Now search for actual products. The goal is a broad initial list of ~8-12 candidates.
Search Strategy
- Search for "best [product] [year]" on 2-3 sources
- Search for "[product] comparison [year]"
- Search for "[product] buyer's guide"
- Check ratings from multiple review sites (not just one)
Selection Principles
- Prefer newer models unless an older model has overwhelmingly positive reviews and significantly better value
- Volume of reviews matters: A product with 2,000 reviews averaging 4.2 stars is generally more trustworthy than one with 15 reviews at 4.8 stars. High volume at a decent rating signals real-world reliability.
- Cross-reference ratings: A product rated 4.5 on one site but 3.8 on another deserves scrutiny — find out why the discrepancy exists.
Disruptor Scan
After identifying candidates from established brands, always run a second search specifically for newer entrants in the category:
- Search for "best new [product] brands [year]" or "[product category] new brands [year]"
- Look for new brands that launched in the past 12-18 months in this product category
- Check for Kickstarter/Indiegogo products that have shipped and been independently reviewed (not just funded — they must have real reviews from buyers)
- Look for sub-brands or sister brands of established manufacturers
- Search the internet to find the newest models
- Cross-reference any disruptors found against the user's requirements before adding to the candidate list
- Also propose the user to maybe break some of their constraints (features, prices) if the result can produce sizeable increase in benefit on other points
Disruptors often offer better price/performance ratios because they're competing on specs rather than brand recognition. Missing them is one of the most common blind spots in product research — established brands dominate search results and review roundups, but newer entrants may actually be the best fit.
Demand-Supply Gap Analysis (InfraNodus) — Run Before Presenting the List
After gathering candidates from web searches and the disruptor scan, call search_queries_vs_search_results with 2-3 queries that combine the user's top priorities (e.g., ["quiet 4K projector deep blacks", "short throw projector good contrast", "laser projector low noise"]). Set the language and country to match the user's location. This is the single most effective tool for finding underrated products — it reveals what buyers actively want but existing search results fail to deliver.
This tool reveals what people search for but don't find — the gap between demand (search queries) and supply (search results). This is precisely where disruptors position themselves. Look for:
- Feature combinations people want but established products don't serve — e.g., if many people search for "quiet projector deep blacks" but search results only show loud models or models with poor contrast, there's an unmet need that newer brands may address
- Brand names appearing in search queries but not in search results — these are emerging brands that buyers know about but that haven't yet made it into top review roundups
- Technology terms in search queries absent from results — new technologies (e.g., "EBL laser dimming", "RGB triple laser") that buyers are actively seeking but that aren't well-covered in existing content
Any products or brands surfaced through this gap analysis should be added to the candidate list and evaluated against user requirements.
Checkpoint: Did you run search_queries_vs_search_results? If not and InfraNodus is available, run it now — this is the best tool for catching products that web search roundups miss.
Present the Initial List
Show the user a table with: Product name, Price (approximate), Rating (and source), and 2-3 key specs relevant to their must-haves.
Phase 4: COMPARE — Head-to-Head Comparisons Reveal Hidden Features
This phase is where you discover features you didn't know to look for.
Search specifically for "[Product A] vs [Product B]" comparisons between the top candidates. Comparison articles and videos often highlight differentiating features that don't show up in spec sheets or standard reviews.
What to look for:
- Features mentioned in comparisons that aren't on your requirements list yet
- Surprising advantages or disadvantages
- Real-world usage differences vs spec-sheet differences
Reviewer Cross-Reference Check
When reading comparison articles and reviews for shortlisted candidates, pay close attention to what other products reviewers compare them against. If reviewers consistently benchmark a candidate against a product NOT already on your shortlist, that's a strong signal of a relevant alternative you may have missed.
- For each shortlisted product, note every competitor mentioned in reviews and comparisons
- If a previously unknown product appears in 2 or more independent reviews as a direct competitor, add it to the candidate list and evaluate it against user requirements
- This is especially important for catching disruptors and niche products that don't appear in generic "best of" roundups but are well-known within the enthusiast community
This rule exists because review comparisons reflect real-world purchase decisions — reviewers compare products that actual buyers are choosing between, which is the most reliable signal of genuine alternatives.
If new important features are discovered, add them to the feature list and re-evaluate the full candidate list against the updated criteria. This may eliminate some products and elevate others.
Structural Gap Analysis (InfraNodus) — Don't Skip This Step
Once you have comparison content from multiple reviews, call generate_content_gaps on the combined review text or URLs of the top candidates. This is where surprising insights often emerge — the tool builds a knowledge graph across all the review content and finds topical clusters that aren't connected to each other, revealing blind spots that reading reviews linearly would miss.
These gaps can reveal:
- Product categories or form factors you haven't considered (e.g., UST projectors when only evaluating standard throw)
- Features that exist in the market but aren't represented in any of your current candidates
- Technology trade-offs that reviewers discuss in passing but that could be decisive for this user's priorities
If the gap analysis surfaces a product category, technology, or feature that aligns with the user's must-haves, search for products that fill that gap and add them to the comparison.
Checkpoint: Did you run generate_content_gaps on the review content? If not and InfraNodus is available, this is the point to do it — the combined review text is richest right now.
Phase 5: OPTIMIZE — Find Better Value Within Brands
For each promising candidate, check if the same brand offers:
- A slightly cheaper model that has almost the same features (saving money without losing much)
- A slightly more expensive model that adds a key feature the user wants (small premium for significant gain)
This catches situations like: "The Brand X Pro is $400 but the Brand X Plus is $320 and only lacks wireless charging, which you said was nice-to-have."
Search for "[brand] [product] lineup comparison" or "[brand] [model] vs [adjacent model]."
Phase 6: EXPAND — Check Alternative Brands
By now you're probably anchored on 2-3 brands. Deliberately break out of this by searching for:
- "Best [product] brands [year]" — are there reputable brands you haven't considered?
- "[leading candidate] alternatives" — what do people switch to?
- Products from brands strong in adjacent categories that have entered this market
Look for alternatives that match the user's confirmed feature priorities. The point isn't to add noise — it's to make sure you haven't missed a strong contender due to brand-name bias.
Transcendent Expansion (InfraNodus) — Challenge Your Assumptions
Before narrowing to a final shortlist, call generate_research_ideas with shouldTranscend: true on a text that summarizes the user's core and underlying needs, priorities, and the product category being researched. This deliberately breaks out of the current product category to check whether a completely different solution type might serve the user better. Skip this only if the user has explicitly said they want a specific product type and nothing else.
For example:
- A user searching for a "quiet projector with deep blacks" might actually be better served by a high-end OLED TV if their room allows it — the underlying need is immersive dark-room viewing, not necessarily a projector
- A user looking for "best noise-cancelling headphones for open office" might benefit from considering a white noise machine + cheaper headphones — the underlying need is focus, not headphone specs
- A user is looking for a matress and focuses on the material it's made of (latex, foam, springs) but in fact the important aspect is their comfort, so it's important to look at what matress actually best for the sleeping position they prefer
- A user wanting a "portable Bluetooth speaker for parties" might discover that a karaoke system or a powered PA speaker serves their actual use case better
The tool analyzes the structural gaps in the discourse around the user's needs and generates ideas that bridge between the user's stated requirements and adjacent product categories or solutions. Only present these lateral alternatives if they genuinely serve the user's core needs better or at significantly better value — the goal is creative problem-solving, not scope creep.
Checkpoint: Did you run generate_research_ideas with shouldTranscend: true? If not and InfraNodus is available, do it now before locking in the shortlist — this is your last chance to catch lateral alternatives.
Phase 7: NARROW — Final Shortlist of 3-4 Options
By this point you've evaluated many candidates. Narrow to 3-4 finalists using the prioritized feature list from Phase 2.
Apply these filters:
- Must meet ALL "must-have" requirements
- Score well on "important" features
- Reasonable price-to-value ratio
- Adequate review volume and rating
Present the shortlist clearly, showing how each option maps against the user's priorities. Highlight where each one excels and where it falls short.
Phase 8: REVIEW — Deep Dive into Reviews
For each shortlisted product, do a focused review analysis:
Find the Extremes
Search for both very positive (5-star) and very negative (1-2 star) reviews. The middle ratings are usually less informative.
Analyze Negative Reviews
For each product's negative reviews, determine:
- Is the complaint relevant to this user? (e.g., "too heavy for hiking" doesn't matter if the user will keep it at home)
- Is it a recurring theme or an isolated incident? (one defective unit vs systematic quality issue)
- Is it about the product or the service? (product defect vs shipping damage)
Analyze Positive Reviews
For each product's positive reviews, determine:
- Are the praised features ones this user cares about?
- Do they mention long-term reliability? (3-month vs 2-year ownership reviews)
- Are reviewers similar to this user in use case?
Reselection Logic
If a product's negative reviews reveal a serious, relevant issue:
- Search for alternatives that share its good features but avoid the specific problem
- Replace it on the shortlist if a better option exists
If only one product remains after filtering, actively search for a competitor that matches its strengths without its weaknesses.
Phase 9: STRETCH — Premium and Budget Check
Before finalizing, do one last boundary check to make sure you haven't missed value at the edges:
Premium Check
Search for the next tier up from the shortlisted price range. Ask:
- Does spending 20-30% more get a substantial improvement in the must-have features?
- If yes → add the premium option to the final list with a note on what the extra money buys
Budget Check
Search for options 20-30% cheaper than the shortlist. Ask:
- Is the cheaper option only a marginal loss on the user's priorities?
- If yes → add the budget option to the final list as a "value pick"
The point is not to bloat the list — only add options from this phase if they genuinely shift the value equation.
Phase 10: DECIDE — Final Recommendation
Resale Value
For the final candidates (especially for electronics, vehicles, or high-value items):
- Search for "[product] resale value" or "[product] holds value"
- Check if the brand/model retains value well on secondary markets
- Products that hold value better effectively cost less over time
- Search ebay completed auctions to see the price
Delivery and Support
For each finalist, check:
- Delivery speed and options (same-day, free shipping, etc.)
- Return policy (how easy is it to return if unsatisfied?)
- Warranty (manufacturer warranty length, extended warranty options)
- Customer support reputation (is the brand known for good post-purchase support?)
Prefer options that minimize hassle: easy returns, good warranty, responsive support.
Final Presentation
Present the final 3-4 options in a clear comparison, organized by the user's priorities. For each product include:
- Name, model, price
- How it scores on must-have and important features
- Key positive from reviews
- Key concern from reviews (and your assessment of its severity)
- Resale value indicator (if applicable)
- Delivery/support notes
End with a clear recommendation that states which option you'd suggest and why, while acknowledging the trade-offs. Make it easy for the user to make the final call.
IT IS IMPERATIVE THAT YOU HELP THE USER FIND THE BEST POSSIBLE OPTION AND MAKE IT EASIER FOR THEM TO MAKE A CHOICE.
IF THEY CANNOT MAKE A CHOICE AND KEEP ASKING FOR CLARIFICATION, YOU NEED TO EXPAND YOUR SEARCH AND ALSO ASK THE USER IF THEY ARE WILLING TO COMPROMISE ON ANY OF THE CONSTRAINTS.
Adaptation Rules
For Low-Stakes Purchases (under ~$50)
Compress phases 4-6 and 9. Focus on getting a quick, well-rated option that meets must-haves. Don't over-research a $15 phone case.
For High-Stakes Purchases (over ~$500)
Run every phase fully. Spend extra time on phases 8 (reviews) and 10 (resale, warranty). The cost of a bad decision is high.
For Urgent Purchases
Prioritize phases 1-3 and 10 (delivery). Skip phases 5-6 and 9. Get a reliable option that ships fast.
User Wants to Go Deeper
If the user asks for more options or more detail at any phase, expand that phase. The workflow is a guide, not a cage.
User Wants to Move Faster
If the user says "just give me a recommendation" or seems impatient, compress to: quick requirements → top 3 from best review sites → recommendation. You can always offer to go deeper afterward.
Web Search Guidelines
This skill relies heavily on web search. Follow these principles:
- Search with specificity: "[product] vs [product] 2025" beats "good products"
- Use multiple sources: Cross-reference at least 2-3 review sites
- Prefer recent results: Append the current year to searches
- Check specialized sites: For tech → Wirecutter, RTINGS, Tom's Hardware; for home → Consumer Reports; for outdoor → Switchback Travel, etc.
- Read comparison articles fully: Use web_fetch on promising comparison URLs to get full details, not just snippets
- Track prices across retailers: The same product can vary significantly in price
Output Format
Throughout the workflow, use clear, scannable formatting:
- Tables for comparisons
- Bold for product names and key differentiators
- Brief summaries, not walls of text
- Always state which phase you're in so the user can track progress
At each phase transition, briefly tell the user what you found and what comes next. Keep it conversational — this should feel like working with a knowledgeable friend, not reading a report.
