Vendooly
// Capability reference

Everything the assistant can do — and what it must ask you first.

Most vendors describe capabilities in adjectives. This page lists them, grouped by area, with a plain marker on each: read runs freely, write is prepared as a proposal and waits for your explicit confirmation. If you are evaluating MCP servers, this is the page to compare against.

Connect and try themHow to compare servers
ReadCatalogue, listings, stock, orders, pricing, Buy Box, account health, ad performance.
WriteListings, prices, quantities, bids, budgets, campaign state — proposal first, always.
AnalyticsHistorical facts per company: sales, inventory, Buy Box, campaigns, keywords.
Availability depends on your authorized scopes and plan
Seller API

Catalogue, listings and product research.

Read

  • Search the Amazon catalogue by keyword or identifier
  • Retrieve a catalogue item and its attributes
  • List your own products and catalogue detail
  • Read a single listing and its current content
  • Check listing issues and defects
  • Retrieve valid product types for a category

Write — approval required

  • Create a listing, including offer-only on an existing ASIN
  • Update listing content and attributes
  • Update item highlights
  • Delete a listing
  • Bulk-update listings
  • Submit and track listing feeds

Audits

  • Catalogue quality audit across your ASINs
  • Title compliance checks against category rules
  • General compliance audit on listing content
Seller API

Inventory, orders and fulfilment.

Read

  • FBA inventory and availability
  • Inbound shipment plans
  • Inbound discrepancy detection
  • Fulfilled shipments
  • Orders and order items within authorized scopes

Write — approval required

  • Update merchant-fulfilled quantities
  • Bulk-update inventory quantities

Notes

Buyer personal data is not prepared as an analysis basis. Order tools serve operational questions — volumes, items, fulfilment status — not customer profiling.

Seller API

Pricing, Buy Box and account health.

Read

  • Your current pricing per SKU
  • Competitive pricing on an ASIN
  • Buy Box (Featured Offer) prices and status
  • Referral and fulfilment fee estimates
  • Account health signals within authorized scopes

Write — approval required

  • Update the price of a single SKU
  • Bulk-update prices
  • Reprice toward the Buy Box, with the proposed value shown first

Guardrails

Large price moves and bulk operations are exactly what Amazon's agent rules expect a person to authorise. Server-side caps apply on top of the confirmation step.

Advertising API

Sponsored Products.

Read

  • Advertising profiles and portfolios
  • Campaigns, ad groups and product ads
  • Keywords, product targets and their current state
  • Negative keywords and negative targets
  • Stock-out check across advertised products

Write — approval required

  • Create campaigns, ad groups, product ads and portfolios
  • Create keywords, product targets and negatives
  • Update bids and states on keywords and targets
  • Update campaign and ad group settings, including budgets
  • Delete campaigns, targets and negatives

Why the stock-out check matters

Advertising products you cannot ship is one of the most common silent losses. The check relates ad activity to current availability so the waste becomes visible before you adjust budgets.

Analytics

History, not just the present moment.

Live API calls answer "what is true now". Trends need stored facts, so Vendooly keeps a per-company analytics store with daily facts for sales, inventory, Buy Box, campaigns and keywords.

What it answers

  • Spend, ACoS and ROAS over time
  • Keywords and campaigns wasting budget
  • Sales and Buy Box trends by ASIN and marketplace

Diagnostics

  • Sales-drop diagnosis across the likely causes
  • Weekly recap of what changed on the account
  • Dashboards over the stored facts

The rule we follow

Historical questions are answered from the analytics store; any action is taken against live data, re-read immediately before the change is proposed. Cached numbers inform, they never authorise.

Scope and honesty

What this page is not.

Not a per-plan entitlement

What appears in your connector depends on the scopes you authorized and your plan. A Seller API plan shows no advertising tools; an Ads plan shows no listing writes; the Free plan is limited in accounts, marketplaces and ASINs.

Not a frozen list

Capabilities are added over time and this page is updated with them. Last reviewed 26 July 2026.

Not a substitute for trying it

Connect one seller account on the free plan and call the ones that matter to you against your own catalogue.

Compare this list against anyone else's.

That is why it is public. If another server does more, you should know before you pay either of us.

Start free