# Build by SellerMate

> Build by SellerMate is one API for marketplace and ad data. One key reads Amazon and Google Ads in the same field names, and changes campaigns on Amazon behind guardrails.

Call shape (v1): POST https://build-api.sellermate.ai/v1/tools/{name} with an X-API-Key header and a JSON body. Writes exist on Amazon only; never call a write tool for another platform. Every platform answers under the same field names. Check https://build.sellermate.ai/openapi.json for tool names, never guess one. Amazon and Google Ads are live. Walmart, Flipkart, TikTok Shop and Meta Ads are coming soon.

## For AIs

- [SKILL.md](https://build.sellermate.ai/SKILL.md): When to use Build, the call shape, auth, the Amazon-only writes rule and three example calls.
- [openapi.json](https://build.sellermate.ai/openapi.json): Every tool with its fields, examples and errors. The operationId is the tool name.
- [Agent skills index](https://build.sellermate.ai/.well-known/agent-skills/index.json): The skills an agent can load, with digests.
- [llms-full.txt](https://build.sellermate.ai/llms-full.txt): Every docs page as Markdown, in one file.
- [Docs](https://build.sellermate.ai/docs.md): The docs home. Every docs page is also at its path with .md on the end.

## Get started

- [What Build is](https://build.sellermate.ai/docs/get-started/what-build-is.md): Build is one API for marketplace and ad data, with the same call shape and field names on every platform.
- [Get a key](https://build.sellermate.ai/docs/get-started/get-a-key.md): Create a Build account, choose what a key can reach, and keep it in your tool's secrets.
- [First call in 60 seconds](https://build.sellermate.ai/docs/get-started/first-call.md): Make a first real call to Build with the sandbox key or your own, and read the answer.

## Build with your AI

- [Claude Code](https://build.sellermate.ai/docs/build-with-your-ai/claude-code.md): Point Claude Code at the Build docs and your key, paste one sentence, and let it write the call.
- [Cursor](https://build.sellermate.ai/docs/build-with-your-ai/cursor.md): Point Cursor at the Build docs and your key, paste one sentence, and let it write the call.
- [Lovable](https://build.sellermate.ai/docs/build-with-your-ai/lovable.md): Point Lovable at the Build docs and your key, paste one sentence, and let it write the call.
- [n8n](https://build.sellermate.ai/docs/build-with-your-ai/n8n.md): Point n8n at the Build docs and your key, paste one sentence, and let it write the call.
- [Zapier](https://build.sellermate.ai/docs/build-with-your-ai/zapier.md): Point Zapier at the Build docs and your key, paste one sentence, and let it write the call.

## Platforms

- [Amazon](https://build.sellermate.ai/docs/platforms/amazon.md): Seller, Vendor, Ads, DSP and AMC under one key, with every data set, its status and its freshness.
- [Google Ads](https://build.sellermate.ai/docs/platforms/google-ads.md): Client and manager accounts under one consent, read-only, with campaigns, search terms and conversions next to your Amazon numbers.
- [Walmart](https://build.sellermate.ai/docs/platforms/walmart.md): Walmart is coming soon to Build: Marketplace orders, stock and returns, and Walmart Connect ads, under the same field names as Amazon.
- [Flipkart](https://build.sellermate.ai/docs/platforms/flipkart.md): Flipkart is planned for Build: orders, settlements, returns and stock for sellers, under the same field names as Amazon.
- [TikTok Shop](https://build.sellermate.ai/docs/platforms/tiktok-shop.md): TikTok Shop is planned for Build: orders, stock, returns and creator sales under the same field names as Amazon.
- [Meta Ads](https://build.sellermate.ai/docs/platforms/meta-ads.md): Meta Ads is planned for Build: Facebook and Instagram spend and results next to Amazon, under the same field names.

## Recipes

- [Reporting](https://build.sellermate.ai/docs/recipes/reporting.md): Send spend, sales and ACoS to the people who need them, on a schedule, from your AI tool.
- [Wasted spend](https://build.sellermate.ai/docs/recipes/wasted-spend.md): Find search terms that spend and never sell, list them every week, and add negatives after you approve.
- [Launches](https://build.sellermate.ai/docs/recipes/launches.md): Follow a new ASIN from sales to stock on one page that refreshes every morning.
- [Inventory](https://build.sellermate.ai/docs/recipes/inventory.md): Work out days of stock per SKU, alert before you run out, and pause ads on Amazon when stock is low.
- [Agency ops](https://build.sellermate.ai/docs/recipes/agency-ops.md): Rank clients by what needs attention, watch budget pacing, check connections and audit a new account.

## Guides

- [Workspaces and accounts](https://build.sellermate.ai/docs/guides/workspaces-and-accounts.md): How Build groups your marketplace and ad accounts, and how to connect several of them.
- [Keys and scopes](https://build.sellermate.ai/docs/guides/keys-and-scopes.md): How a Build key authenticates, what it can reach, and how to revoke or rotate it.
- [Plans and limits](https://build.sellermate.ai/docs/guides/plans-and-limits.md): What each Build plan includes: accounts, data retention and requests per minute.
- [Writes and guardrails](https://build.sellermate.ai/docs/guides/writes-and-guardrails.md): How changes to an Amazon account work on Build: caps, a dry run, idempotency keys, a 24 hour undo and an audit log.
- [Webhooks](https://build.sellermate.ai/docs/guides/webhooks.md): Webhooks are coming soon; until then, poll a tool and read data_as_of.

## API reference

- [API reference overview](https://build.sellermate.ai/docs/api-reference/overview.md): Every Build tool is one POST with a JSON body, the same fields on every platform, and an X-API-Key header.
- [get_campaign_performance](https://build.sellermate.ai/docs/api-reference/get-campaign-performance.md): Spend, clicks, orders, sales and ACoS for each campaign over a date range, in the same fields on Amazon and Google Ads.
- [get_search_term_performance](https://build.sellermate.ai/docs/api-reference/get-search-term-performance.md): Search terms with their clicks, spend and orders over a date range, on Amazon and Google Ads.
- [get_orders_report](https://build.sellermate.ai/docs/api-reference/get-orders-report.md): Orders and units for an Amazon Seller account over a date range.
- [get_inventory](https://build.sellermate.ai/docs/api-reference/get-inventory.md): Stock and inbound units for an Amazon account.
- [update_target](https://build.sellermate.ai/docs/api-reference/update-target.md): Change a target on an Amazon Ads account, behind caps, a dry run and undo.

## Pages

- [Home](https://build.sellermate.ai): Amazon, Google Ads, Walmart and more in one place, ready for your dashboards, reports and tools. Your developer builds on it, or your AI does.
- [Pricing](https://build.sellermate.ai/pricing): One price per connected account, on every platform. Free: $0, 1 account; Build: $97/mo, up to 3 accounts; Scale: $500/mo, 10 included, then $33 each. Annual is 20% off on Build and Scale.
- [Templates](https://build.sellermate.ai/templates): Ready-made outcomes for Amazon ad data. Copy the prompt, or import the flow, into your AI tool.
- [Build for agencies](https://build.sellermate.ai/agencies): Reporting and campaign changes across every client account. Clients connect with a link, and you pay per connected account.
- [Build for brands](https://build.sellermate.ai/brands): Connect Seller Central or Vendor Central once, then ask an AI assistant about ads, sales and stock.
- [Build for AI builders](https://build.sellermate.ai/ai-builders): Paste one prompt into Claude Code, Cursor, Lovable, n8n or Zapier and your AI builds on your marketplace and ad data.
- [Build for developers](https://build.sellermate.ai/developers): One API for every marketplace and ad platform you use. One POST per tool, the same fields on every platform, scoped keys and a read-only sandbox key.
- [Guides](https://build.sellermate.ai/guides): Step-by-step guides for building reports, alerts and tools on marketplace and ad data.
- [Platforms](https://build.sellermate.ai/platforms): Amazon and Google Ads are live. Walmart, Flipkart, TikTok Shop and Meta Ads are coming soon. Every platform answers under the same field names.
- [Trust](https://build.sellermate.ai/trust): How Build handles keys, writes, credentials and data: scoped keys, read-only by default, guarded writes on Amazon, data held 30 days after disconnect.
- [Changelog](https://build.sellermate.ai/changelog): Release notes. Entries start with the first public release.
- [Status](https://build.sellermate.ai/status): A status page is on the way. Until then, ask support@sellermate.ai.
- [Privacy](https://build.sellermate.ai/privacy): Build is operated by SellerMate Technologies Private Limited. SellerMate's privacy policy (https://www.sellermate.ai/privacy-policy) covers Build. Contact support@sellermate.ai.
- [Terms](https://build.sellermate.ai/terms): Build is operated by SellerMate Technologies Private Limited. SellerMate's terms and conditions (https://www.sellermate.ai/terms-and-conditions) cover Build. Contact support@sellermate.ai.

## Platform pages

- [Amazon](https://build.sellermate.ai/platforms/amazon): Sell on Amazon with a Seller Central or Vendor Central account. Live. Reads · Writes with guardrails.
- [Google Ads](https://build.sellermate.ai/platforms/google-ads): Advertise on Google with a Google Ads account. Live. Reads only.
- [Walmart](https://build.sellermate.ai/platforms/walmart): Walmart Marketplace sellers. Coming soon. Reads only.
- [Flipkart](https://build.sellermate.ai/platforms/flipkart): Flipkart sellers in India. Coming soon. Reads only.
- [TikTok Shop](https://build.sellermate.ai/platforms/tiktok-shop): TikTok Shop sellers. Coming soon. Reads only.
- [Meta Ads](https://build.sellermate.ai/platforms/meta-ads): Ads on Facebook and Instagram. Coming soon. Reads only.

## Templates

- [Monday client report to Slack](https://build.sellermate.ai/templates/monday-client-report): One Slack card per client, plus a Sheet row. Built in n8n. Reads only.
- [What’s-on-fire board](https://build.sellermate.ai/templates/whats-on-fire-board): Clients ranked by ACoS drift, spend spike, sales drop. Built in Claude Code. Reads only.
- [Wasted-spend sheet](https://build.sellermate.ai/templates/wasted-spend-sheet): Zero-sale, high-click terms, every week. Built in Zapier. Reads only.
- [Negatives sweep with approval](https://build.sellermate.ai/templates/negatives-sweep): Proposed negatives, applied after you approve. Built in Claude Code. Changes Amazon with guardrails.
- [Stock-out ad protection](https://build.sellermate.ai/templates/stock-out-ad-protection): Pauses ads on low stock, resumes on restock. Built in n8n. Changes Amazon with guardrails.
- [Budget pacing alert](https://build.sellermate.ai/templates/budget-pacing-alert): A Slack line per client with month-end spend. Built in n8n. Reads only.
- [True profit per SKU](https://build.sellermate.ai/templates/true-profit-per-sku): Daily margin per SKU, flagged below zero. Built in Claude Code. Reads only.
- [Weekly exec card across channels](https://build.sellermate.ai/templates/weekly-exec-card): Monday card: revenue, units, spend, TACoS, margin. Built in Zapier. Reads only.
- [Days-of-stock and reorder alert](https://build.sellermate.ai/templates/days-of-stock-reorder): A sheet and an alert with the reorder date. Built in n8n. Reads only.
- [New-ASIN launch page](https://build.sellermate.ai/templates/new-asin-launch-page): One page per ASIN, sales to stock. Built in Lovable. Reads only.
- [30-day account audit](https://build.sellermate.ai/templates/thirty-day-account-audit): A generated audit sheet to win the pitch. Built in Claude Code. Reads only.
- [Approval queue for bid and budget changes](https://build.sellermate.ai/templates/approval-queue): Tap to approve, then applied, with a change log. Built in Lovable. Changes Amazon with guardrails.
- [Month-end export for the bookkeeper](https://build.sellermate.ai/templates/month-end-export): One CSV by SKU: sales, fees, refunds, ads, COGS. Built in Cursor. Reads only.
- [Connection health alert](https://build.sellermate.ai/templates/connection-health-alert): A Slack alert when data is stale or access lapsed. Built in n8n. Reads only.

## Site guides

- [Build a private dashboard for each client](https://build.sellermate.ai/guides/client-dashboard): Have an AI assistant build a small web page per client with key ad numbers, a 30-day chart and top-ten tables, behind a private link.
- [Get a Slack alert when a campaign will run out of budget early](https://build.sellermate.ai/guides/budget-pacing-alert): Have an AI assistant write a small script that checks spend every hour and posts to Slack the campaigns that will hit their daily budget early or barely spend.
- [Keep a Google Sheet up to date with your marketplace data](https://build.sellermate.ai/guides/google-sheets-sync): Have an AI assistant write a Google Apps Script that pulls yesterday's numbers into a sheet every morning, with no server to run.
- [Pause ads before a product runs out of stock](https://build.sellermate.ai/guides/stock-out-guard): Have an AI assistant write a daily check that warns in Slack when ads run on a product with few days of stock left, and can pause or lower bids when you ask it to.
- [Find wasted ad spend](https://build.sellermate.ai/guides/find-wasted-ad-spend): Have an AI assistant write a script that lists Amazon search terms that spent money and sold nothing, then adds them as negatives only when you say so.
- [Five tools agencies build first](https://build.sellermate.ai/guides/five-tools-agencies-build-first): A Monday report, a wasted-spend finder, a pacing alert, a stock-out guard and a client dashboard. What each does, what it needs and the order to build them.
- [Send a Monday client report to Slack](https://build.sellermate.ai/guides/monday-client-report-slack): Have an AI assistant write a small script that posts one Amazon ad report per client to Slack every Monday morning.
- [You don't need a data warehouse for marketplace and ad data](https://build.sellermate.ai/guides/no-data-warehouse-needed): Most agencies and brands build a data pipeline before they build the tool they wanted. Here is how to skip it, and the three cases where a warehouse still helps.

## Optional

- [Trust](https://build.sellermate.ai/docs/trust.md): What Build claims today about keys, writes, credentials and data, and nothing more.
- [Changelog](https://build.sellermate.ai/docs/changelog.md): What changed in Build, newest first. Breaking changes are announced here.