# Best shopping and order APIs for AI agents buying for a person (slim)

> Etsy Open API v3 (B), Amazon Creators API (D) and Instacart Developer Platform API + MCP (D) lead the 5 ranked shopping and order APIs for AI agents buying for a person. Picks by need, strengths, weaknesses and prices from the Anchor benchmark.

- Full: https://www.anchorterminal.com/best/shopping/index.md (~3,650 tokens) · this version ~980 tokens · JSON https://www.anchorterminal.com/best/shopping/index.json · canonical https://www.anchorterminal.com/best/shopping/
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-14

All 5 ranked shopping and order APIs for AI agents buying for a person on the Anchor benchmark, with a pick for each need and where each one falls short. Scores come from public evidence, re-checked as vendors change.

- Ranked: 5 · agent-ready (BB or better): 0 · accept x402: 0 · hosted endpoints: 5
- Full ranked table: https://www.anchorterminal.com/categories/shopping.md
- Head-to-head comparisons: https://www.anchorterminal.com/compare/shopping/index.md (8)
- Methodology: https://www.anchorterminal.com/benchmark/index.md

## The shortlist

| # | Tool | Grade | Score | Best for | Price | Where |
| --- | --- | --- | --- | --- | --- | --- |
| 1 | [Etsy Open API v3](https://www.anchorterminal.com/tools/etsy.md) | B | 63.4 | Product discovery and price comparison across Etsy's handmade and vintage listings. | Free | Hosted |
| 2 | [Amazon Creators API](https://www.anchorterminal.com/tools/amazon-creators-api.md) | D | 48.7 | Product search, price checks and affiliate links for an agent that recommends Amazon products and hands the purchase to the person. | Free | Hosted |
| 3 | [Instacart Developer Platform API + MCP](https://www.anchorterminal.com/tools/instacart.md) | D | 48.3 | Grocery list and recipe hand-off for meal planning and recipe agents in the US and Canada. | Free | Hosted |
| 4 | [Best Buy Developer API](https://www.anchorterminal.com/tools/best-buy.md) | E | 39.1 | Product, price and store-availability search for US electronics, for agents that compare and then hand the purchase to the person. | Free | Hosted |
| 5 | [Walmart Affiliate Marketing API](https://www.anchorterminal.com/tools/walmart-affiliate-api.md) | E | 38.6 | Product search and affiliate links for an agent recommending Walmart products and handing the purchase to the person. | Free | Hosted |

## Picks by need

- Highest score overall: [Etsy Open API v3](https://www.anchorterminal.com/tools/etsy.md), B, 63.4/100 on the benchmark. Also [Amazon Creators API](https://www.anchorterminal.com/tools/amazon-creators-api.md), D, 48.7/100.
- Schema & documentation: [Instacart Developer Platform API + MCP](https://www.anchorterminal.com/tools/instacart.md), 80/100 on schema & documentation, against 75 for the overall leader.
- Agent ergonomics: [Amazon Creators API](https://www.anchorterminal.com/tools/amazon-creators-api.md), 85/100 on agent ergonomics, against 64 for the overall leader.

## How to choose

- Search only or order too: Check whether the API can place an order or only returns products and links, since an agent that cannot check out has to hand the purchase back to the person.
- Terms on automated buyers: Read what the retailer's terms say about bots and automated purchases, because an account can be closed for buying through an unapproved agent.
- Returns and refund status: Check whether return requests and refund status are available through the API, so an agent can follow a return without the person logging in.
- Partner or affiliate approval: Check whether access needs an affiliate account, sales history or partner approval, as these can block a new developer for weeks.

- How the benchmark tests this category: In this run, public evidence against the published checklist. When the task suites run, the same product searched on each listing, an order placed where a sandbox allows, then tracked and returned. We check search results and prices, the order and return steps, refund status and the terms on automated access.

Each listing's verdict, strengths and weaknesses: https://www.anchorterminal.com/best/shopping/index.md