# Amazon Creators API vs Walmart Agent Gateway

> Amazon Creators scores 48.7 (D) to Walmart Agent Gateway's 8.3 (F) for product search for shoppers. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/amazon-creators-api-vs-walmart-agent-gateway
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- Slim: https://www.anchorterminal.com/compare/amazon-creators-api-vs-walmart-agent-gateway.min.md (~680 tokens, same facts, less prose, for token-sensitive contexts)
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- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- MCP: https://www.anchorterminal.com/mcp (the whole catalogue as tools, no key)
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)
- Updated: 2026-10-25

Amazon Creators API scores 48.7 (D) on agent readiness against Walmart Agent Gateway's 8.3 (F), and leads in 6 of 7 scored categories. Both do product search for shoppers.

- Amazon Creators API: grade D, 48.7/100, rank #949 of 1210. Markdown https://www.anchorterminal.com/tools/amazon-creators-api.md · JSON https://www.anchorterminal.com/api/v1/tools/amazon-creators-api.json
- Walmart Agent Gateway: grade F, 8.3/100, rank #1202 of 1210. Markdown https://www.anchorterminal.com/tools/walmart-agent-gateway.md · JSON https://www.anchorterminal.com/api/v1/tools/walmart-agent-gateway.json
- Best shopping and order APIs for AI agents buying for a person: https://www.anchorterminal.com/best/shopping/index.md
- All 24 shopping comparisons: https://www.anchorterminal.com/compare/shopping/index.md

## Which one, for what

### Amazon Creators API (D)

Good for: Product search, price checks and affiliate links for an agent that recommends Amazon products and hands the purchase to the person.

Ahead on:
- Reliability, 45 against 5
- Schema & documentation, 50 against 0
- Agent ergonomics, 85 against 0
- Security & auth, 48 against 10
- Maintenance & community, 41 against 0

Also in its favour:
- A hosted endpoint, with nothing to install

Watch for: No order, cart, checkout, order status or return operation

### Walmart Agent Gateway (F)

Good for: Agents buying from Walmart and Sam's Club for a person, once the beta opens to them, with per-agent limits when Agent Profiles ship.

Watch for: No public MCP endpoint, tool list, developer documentation or price was found on 25 October 2026


## Score by category

| Category | Weight | Amazon Creators API | Walmart Agent Gateway | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 45 | 5 | Amazon Creators API +40 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 50 | 0 | Amazon Creators API +50 |
| Agent ergonomics | 13% (16.2 this run) | 85 | 0 | Amazon Creators API +85 |
| Security & auth | 14% (17.5 this run) | 48 | 10 | Amazon Creators API +38 |
| Payments & pricing | 10% (12.5 this run) | 10 | 10 | even |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 41 | 0 | Amazon Creators API +41 |
| Transparency & trust | 7% (8.8 this run) | 52 | 49 | Amazon Creators API +3 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **48.7 · D** | **8.3 · F** | |

## Facts side by side

| Fact | Amazon Creators API | Walmart Agent Gateway |
| --- | --- | --- |
| Kind | HTTP API | MCP server |
| Vendor | Amazon.com Services LLC | Walmart Inc. |
| Hosted endpoint | `https://creatorsapi.amazon/catalog/v1` | no (local only) |
| Transports | HTTP |  |
| Auth | OAuth | OAuth or key |
| Pricing | Free | Free |
| x402 | no | no |
| Licence | Proprietary service under the Amazon Associates Program Operating Agreement and its IP Licence for each locale | Proprietary hosted service. Walmart's terms for AI agents are summarised in its announcement of 21 October 2026; no full terms document was found on a page we could read |
| Read-only variant documented | yes | no |
| llms.txt | no | no |
| Last release | 2026-08-21 | none |
| Terms last updated | 2025-10-15 | 2026-09-09 |
| Privacy policy last updated | 2026-06-30 | 2026-08-20 |
| Customer content may train models | yes | yes |
| Terms restrict automated access | not found in the text | yes |
| Terms restrict benchmarking | not found in the text | not found in the text |
| Terms or service can change without notice | not found in the text | yes |
| Arbitration or class-action waiver | yes | yes |

## Verdicts

**Amazon Creators API.** Read-only product search and lookup across 22 Amazon stores, with field selection, typed error reasons and documented rate limits. It cannot place or follow orders, so a person buys through the affiliate link. Access needs an accepted Associates account with 10 qualifying sales in 30 days, and the Agent Terms require agents to identify themselves.

**Walmart Agent Gateway.** Walmart has published terms for agents shopping its sites, including customer approval of purchases by default, no access to payment cards and blocking of agents that break them. The gateway is a beta by request for companies and developers, with no public endpoint, documentation, tool list or price, and Agent Profiles are announced for about November 2026.

## Before you call either

### Amazon Creators API

1. Send x-marketplace as a header and marketplace and partnerTag in the body on every call
2. Cache the access token for its 3,600 seconds and share it across processes
3. Request only the resources the task needs, and use offersV2 for prices, because the older price resource is gone
4. Set the user agent to Agent/<name> as the Associates Agent Terms require
5. Hand purchases to the person through the returned detailPageURL without editing its parameters

### Walmart Agent Gateway

1. Don't look for a public endpoint; Walmart hasn't published one, and the gateway starts as a beta for approved companies and developers
2. Ask your human for approval before any Walmart purchase; Walmart's terms require it by default and block agents that act beyond the shopper's intent
3. Don't request or store the customer's card details; Walmart's terms bar agents from payment-card data and payment-method changes
4. Treat claims that ChatGPT, Gemini or Muse already connect through the gateway as Reuters's reporting; Walmart's own post doesn't say so

## Questions

### Which is better for AI agents, Amazon Creators API or Walmart Agent Gateway?

Amazon Creators API scores 48.7 (D) on agent readiness against Walmart Agent Gateway's 8.3 (F), and leads in 6 of 7 scored categories.

### Do Amazon Creators API and Walmart Agent Gateway need an API key?

Amazon Creators API uses an OAuth sign-in. Walmart Agent Gateway takes an API key or an OAuth sign-in.

### Can an agent call Amazon Creators API and Walmart Agent Gateway without installing anything?

Amazon Creators API has a hosted endpoint at https://creatorsapi.amazon/catalog/v1. No hosted endpoint is listed for Walmart Agent Gateway.


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/amazon-creators-api-vs-walmart-agent-gateway.json, and with the fewest tokens: https://www.anchorterminal.com/compare/amazon-creators-api-vs-walmart-agent-gateway.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "amazon-creators-api", "b": "walmart-agent-gateway"}`. From a terminal: `anchor compare amazon-creators-api walmart-agent-gateway`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/amazon-creators-api.json and https://www.anchorterminal.com/api/v1/tools/walmart-agent-gateway.json

## Other comparisons with Amazon Creators API or Walmart Agent Gateway

- [Amazon Creators API vs Best Buy Developer API](https://www.anchorterminal.com/compare/amazon-creators-api-vs-best-buy.md)
- [Amazon Creators API vs Etsy Open API v3](https://www.anchorterminal.com/compare/amazon-creators-api-vs-etsy.md)
- [Amazon Creators API vs Shop MCP](https://www.anchorterminal.com/compare/amazon-creators-api-vs-shop-mcp.md)
- [Amazon Creators API vs Walmart Affiliate Marketing API](https://www.anchorterminal.com/compare/amazon-creators-api-vs-walmart-affiliate-api.md)
- [Amazon Creators API vs Zillow in Claude](https://www.anchorterminal.com/compare/amazon-creators-api-vs-zillow-claude.md)
- [Best Buy Developer API vs Walmart Agent Gateway](https://www.anchorterminal.com/compare/best-buy-vs-walmart-agent-gateway.md)
- [Etsy Open API v3 vs Walmart Agent Gateway](https://www.anchorterminal.com/compare/etsy-vs-walmart-agent-gateway.md)
- [Shop MCP vs Walmart Agent Gateway](https://www.anchorterminal.com/compare/shop-mcp-vs-walmart-agent-gateway.md)
- [Walmart Affiliate Marketing API vs Walmart Agent Gateway](https://www.anchorterminal.com/compare/walmart-affiliate-api-vs-walmart-agent-gateway.md)
- [Walmart Agent Gateway vs Zillow in Claude](https://www.anchorterminal.com/compare/walmart-agent-gateway-vs-zillow-claude.md)
- [Amazon Creators API vs Instacart Developer Platform API + MCP](https://www.anchorterminal.com/compare/amazon-creators-api-vs-instacart.md)

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