Keyapi Amazon Ecommerce

Explore and analyze Amazon e-commerce data at scale — product search, category browsing, product details, best sellers, deals, seller intelligence, influencer storefronts, reviews, and ASIN/GTIN conversion across 24 Amazon marketplaces.

Explore and analyze Amazon e-commerce data at scale — from product discovery and competitive pricing intelligence to seller profiling, review analysis, and influencer storefront research.

This skill provides comprehensive Amazon marketplace intelligence using the KeyAPI MCP service. It enables product search and discovery, category-level browsing, multi-ASIN detail retrieval, best seller and deal monitoring, seller profile and review analysis, influencer post and product research, and identifier conversion — all through a unified, cache-first workflow supporting 24 Amazon marketplaces.

Use this skill when you need to:

• Search and discover Amazon products by keyword, category, brand, price range, or seller
• Retrieve detailed product information, availability, and variant data for up to 10 ASINs per call
• Monitor best sellers, new releases, trending products, and active deals with rich filter options
• Analyze seller profiles, seller reviews, and seller product catalogs
• Research Amazon influencer storefronts — posts, creative lists, and recommended products
• Retrieve and analyze customer reviews with star rating and verified purchase filters
• Compare product offers across conditions (new, used, refurbished) and delivery options
• Convert Amazon ASINs to Global Trade Item Numbers (GTINs)

author: KeyAPI license: MIT repository: https://github.com/EchoSell/keyapi-skills

Prerequisites

Requirement	Details
KEYAPI_TOKEN	A valid API token from keyapi.ai. Register at the site to obtain your free token. Set it as an environment variable: export KEYAPI_TOKEN=your_token_here
Node.js	v18 or higher
Dependencies	Run npm install in the skill directory to install @modelcontextprotocol/sdk

author: KeyAPI license: MIT repository: https://github.com/EchoSell/keyapi-skills

MCP Server Configuration

All tool calls in this skill target the KeyAPI Amazon MCP server:

text

Server URL : https://mcp.keyapi.ai/amazon/mcp
Auth Header: Authorization: Bearer $KEYAPI_TOKEN

Setup (one-time):

bash

# 1. Install dependencies
npm install

# 2. Set your API token (get one free at https://keyapi.ai/)
export KEYAPI_TOKEN=your_token_here

# 3. List all available tools to verify the connection
node scripts/run.js --platform amazon --list-tools

author: KeyAPI license: MIT repository: https://github.com/EchoSell/keyapi-skills

Analysis Scenarios

User Need	Node(s)	Best For
Keyword or ASIN-based product search	product_search	Product discovery, competitive research
Browse products in a specific category	products_by_category	Category-level analysis, assortment research
Detailed product info for 1–10 ASINs	product_details	Product audit, price/spec comparison
Top-level category list for a marketplace	product_category_list	Category hierarchy discovery
Best sellers, new releases, trending items	best_seller	Market trend monitoring, top-performer benchmarking
Convert ASIN to GTIN/EAN/UPC	asin_to_gtin	Cross-marketplace identifier mapping
Customer reviews for a product	product_reviews	Sentiment analysis, quality signals
Full details for a specific review	product_review_details	Deep review audit, reviewer profiling
Top-ranked helpful reviews	top_product_reviews	Quick quality pulse, best review sampling
Available purchase offers (new/used/refurb)	product_offers	Price comparison, buy box intelligence
Active deals with filters	deals	Deal monitoring, promotional intelligence
Products in a specific deal	deal_products	Deal content analysis
Promo code discount details	promo_code_detail	Coupon validation, discount research
Seller profile and business info	seller_profile	Seller credibility assessment
Seller customer reviews	seller_reviews	Seller reputation analysis
Seller product catalog	seller_products	Seller assortment research
Amazon influencer storefront profile	influencer_profile	Influencer discovery, follower/bio data
Influencer posts (lists, photos, videos)	influencer_posts	Content audit, product promotion patterns
Products in an influencer list post	influencer_post_products	Product attribution, affiliate research

author: KeyAPI license: MIT repository: https://github.com/EchoSell/keyapi-skills

Workflow

Step 1 — Identify Analysis Targets and Select Nodes

Clarify the research objective and map it to one or more nodes. Typical entry points:

• Product discovery: Use product_search with keyword + filters → deepen with product_details for specific ASINs.
• Category analysis: Use product_category_list to find category_id → products_by_category to browse listings.
• Competitive pricing: Combine product_details + product_offers to compare price and condition options.
• Best seller research: Use best_seller with category path and type parameter.
• Deal monitoring: Use deals with filters → deal_products for specific deal contents.
• Seller intelligence: Use seller_profile → seller_reviews + seller_products for full seller audit.
• Review analysis: Use product_reviews with star_rating and verified_purchases_only filters; top_product_reviews for quick sampling.
• Influencer research: Use influencer_profile → influencer_posts → influencer_post_products for product attribution.

Multi-ASIN Batch Calls

product_details and product_offers accept comma-separated ASIN lists in the asin parameter (up to 10 ASINs per call). This enables efficient bulk retrieval in a single request.

Example: "asin": "B07ZPKBL9V,B09SM24S8C,B08N5WRWNW"

country Parameter — Multi-Marketplace Support

Most endpoints accept a country parameter (default: us). Set it to target a specific Amazon marketplace: us, uk, de, fr, it, es, ca, jp, au, in, mx, br, sg, ae, sa, tr, nl, pl, se, be, eg, za, ng, ke

fields Projection

Most endpoints accept an optional fields parameter — a comma-separated list of fields to return. Use it to reduce response payload size and focus on only the data you need.

best_seller Category Path

The category parameter uses the URL path from Amazon's Best Sellers page. For example, software maps to https://www.amazon.com/Best-Sellers-Software/zgbs/software. The type parameter controls the list: BEST_SELLERS, NEW_RELEASES, MOVERS_AND_SHAKERS, MOST_WISHED_FOR, GIFT_IDEAS.

deals Pagination

deals uses offset (not page) for pagination. Increment by 30 for each page: 0, 30, 60, 90, etc.

Influencer Post Workflow

To retrieve products from an influencer post:

1. Call influencer_posts with influencer_name to list posts — note the post_id values.
2. Call influencer_post_products with influencer_name + post_id (only works for posts of type list).

Step 2 — Retrieve API Schema

Before calling any node, inspect its input schema to confirm required parameters and available options:

bash

node scripts/run.js --platform amazon --schema <tool_name>

# Examples
node scripts/run.js --platform amazon --schema product_search
node scripts/run.js --platform amazon --schema best_seller
node scripts/run.js --platform amazon --schema deals

Step 3 — Call APIs and Cache Results Locally

Execute tool calls and persist responses to the local cache to avoid redundant API calls.

Calling a tool:

bash

# Single call with pretty output
node scripts/run.js --platform amazon --tool <tool_name> \
  --params '<json_args>' --pretty

# Force fresh data, skip cache
node scripts/run.js --platform amazon --tool <tool_name> \
  --params '<json_args>' --no-cache --pretty

Example — search products with filters:

bash

node scripts/run.js --platform amazon --tool product_search \
  --params '{"query":"wireless earbuds","country":"us","sort_by":"REVIEWS","min_price":20,"max_price":100,"is_prime":true}' --pretty

Example — get details for multiple ASINs in one call:

bash

node scripts/run.js --platform amazon --tool product_details \
  --params '{"asin":"B07ZPKBL9V,B09SM24S8C","country":"us"}' --pretty

Example — get best sellers:

bash

node scripts/run.js --platform amazon --tool best_seller \
  --params '{"category":"electronics","type":"BEST_SELLERS","country":"us","page":1}' --pretty

Example — get active deals:

bash

node scripts/run.js --platform amazon --tool deals \
  --params '{"country":"us","discount_range":"3","min_product_star_rating":"4"}' --pretty

Example — get product reviews filtered by star rating:

bash

node scripts/run.js --platform amazon --tool product_reviews \
  --params '{"asin":"B00939I7EK","sort_by":"TOP_REVIEWS","star_rating":"5_STAR","verified_purchases_only":true,"page":1}' --pretty

Example — get seller profile and reviews:

bash

node scripts/run.js --platform amazon --tool seller_profile \
  --params '{"seller_id":"A02211013Q5HP3OMSZC7W","country":"us"}' --pretty

node scripts/run.js --platform amazon --tool seller_reviews \
  --params '{"seller_id":"A02211013Q5HP3OMSZC7W","star_rating":"NEGATIVE","country":"us"}' --pretty

Example — get influencer posts then products:

bash

# Step 1: get posts
node scripts/run.js --platform amazon --tool influencer_posts \
  --params '{"influencer_name":"tastemade","limit":20}' --pretty

# Step 2: get products from a specific list post
node scripts/run.js --platform amazon --tool influencer_post_products \
  --params '{"influencer_name":"madison.lecroy","post_id":"amzn1.ideas.382NVFBNK3GGQ"}' --pretty

Pagination reference:

Endpoint	Pagination method	Notes
product_search, products_by_category, best_seller, deal_products	page (int, 1-indexed)	Standard page-based pagination
product_reviews	page (int, 1-indexed)	Also supports cookie for session continuity
product_offers	page (int, 1-indexed)	Default limit is 100 offers
seller_reviews, seller_products	page (int)	Optional, starts at 1
deals	offset (int)	Multiples of 30: 0, 30, 60, 90…
influencer_posts, influencer_post_products	cursor (string)	Pass cursor from previous response; omit for first call
product_details, top_product_reviews, seller_profile, promo_code_detail, asin_to_gtin, product_category_list	—	Single-call or no pagination

product_search and products_by_category sort options:

Value	Description
RELEVANCE	Default — most relevant results
LOWEST_PRICE	Cheapest first
HIGHEST_PRICE	Most expensive first
REVIEWS	Most reviewed
NEWEST	Most recently listed
BEST_SELLERS	Best-selling products first

product_search and products_by_category condition options (product_condition):

Value	Description
ALL	All conditions (default)
NEW	New products only
USED	Used products only
RENEWED	Renewed/refurbished products
COLLECTIBLE	Collectible items

product_search and products_by_category deals filter (deals_and_discounts):

Value	Description
NONE	No filter (default)
ALL_DISCOUNTS	Any discounted product
TODAYS_DEALS	Today's deals only

product_offers condition options (product_condition):

Pass as comma-separated values: NEW, USED_LIKE_NEW, USED_VERY_GOOD, USED_GOOD, USED_ACCEPTABLE

Cache directory structure:

text

.keyapi-cache/
└── YYYY-MM-DD/
    ├── product_search/
    │   └── {params_hash}.json
    ├── products_by_category/
    │   └── {params_hash}.json
    ├── product_details/
    │   └── {params_hash}.json
    ├── product_category_list/
    │   └── {params_hash}.json
    ├── best_seller/
    │   └── {params_hash}.json
    ├── asin_to_gtin/
    │   └── {params_hash}.json
    ├── product_reviews/
    │   └── {params_hash}.json
    ├── product_review_details/
    │   └── {params_hash}.json
    ├── top_product_reviews/
    │   └── {params_hash}.json
    ├── product_offers/
    │   └── {params_hash}.json
    ├── deals/
    │   └── {params_hash}.json
    ├── deal_products/
    │   └── {params_hash}.json
    ├── promo_code_detail/
    │   └── {params_hash}.json
    ├── seller_profile/
    │   └── {params_hash}.json
    ├── seller_reviews/
    │   └── {params_hash}.json
    ├── seller_products/
    │   └── {params_hash}.json
    ├── influencer_profile/
    │   └── {params_hash}.json
    ├── influencer_posts/
    │   └── {params_hash}.json
    └── influencer_post_products/
        └── {params_hash}.json

Cache-first policy:

Before every API call, check whether a cached result already exists for the given parameters. If a valid cache file exists, load from disk and skip the API call.

Step 4 — Synthesize and Report Findings

After collecting all API responses, produce a structured e-commerce intelligence report:

For product research:

1. Product Overview — Title, ASIN, brand, category, price range, availability, Prime status, rating, review count.
2. Competitive Landscape — Price comparison across sellers and conditions, Buy Box holder, offer distribution.
3. Review Intelligence — Star rating distribution, top positive and critical themes, verified purchase ratio.
4. Market Positioning — Best seller rank, category placement, variant availability.

For seller research:

1. Seller Profile — Business name, overall rating, response rate, storefront description.
2. Reputation Signals — Review distribution (positive/neutral/negative), recurring feedback themes.
3. Product Assortment — Catalog size, category coverage, pricing patterns.

For deal and promotion monitoring:

1. Active Deals — Deal type distribution (Lightning, Prime Exclusive, Prime Early Access), discount depth, category distribution.
2. Promo Intelligence — Applicable products, discount amounts, validity periods.

For influencer research:

1. Storefront Overview — Influencer name, follower count, bio, post count.
2. Content Analysis — Post type breakdown (lists, photos, videos), keyword themes, scope categories.
3. Product Attribution — Products promoted, category alignment, affiliate depth.

author: KeyAPI license: MIT repository: https://github.com/EchoSell/keyapi-skills

Common Rules

Rule	Detail
Multi-ASIN calls	product_details and product_offers accept up to 10 comma-separated ASINs in a single asin parameter.
country parameter	Defaults to us. Pass a two-letter country code to target other Amazon marketplaces (24 supported).
fields projection	Most endpoints accept fields (comma-separated field names) to reduce response size. Use it to fetch only the data you need.
best_seller category	Use the URL path from Amazon's Best Sellers page as the category value (e.g., electronics, software).
deals pagination	Uses offset (not page). Increment by 30 for each page: 0, 30, 60, 90…
Influencer post type	influencer_post_products only works for posts with type list. Check post type in influencer_posts response first.
product_offers condition	product_condition accepts comma-separated values: NEW, USED_LIKE_NEW, USED_VERY_GOOD, USED_GOOD, USED_ACCEPTABLE.
Success check	code = 0 → success. Any other value → failure. Always check the response code before processing data.
Retry on 500	If code = 500, retry the identical request up to 3 times with a 2–3 second pause between attempts before reporting the error.
Cache first	Always check the local .keyapi-cache/ directory before issuing a live API call.

author: KeyAPI license: MIT repository: https://github.com/EchoSell/keyapi-skills

Error Handling

Code	Meaning	Action
0	Success	Continue workflow normally
400	Bad request — invalid or missing parameters	Validate ASIN format, check batch size limit (max 10), verify country code
401	Unauthorized — token missing or expired	Confirm KEYAPI_TOKEN is set correctly; visit keyapi.ai to renew
403	Forbidden — plan quota exceeded or feature restricted	Review plan limits at keyapi.ai
404	Resource not found — product, seller, or influencer may not exist	Verify ASIN, seller_id, or influencer_name; product may have been delisted
429	Rate limit exceeded	Wait 60 seconds, then retry
500	Internal server error	Retry up to 3 times with a 2–3 second pause; if it persists, log the full request and response and skip this node
Other non-0	Unexpected error	Log the full response body and surface the error message to the user