# Amazon Creators API vs Walmart Affiliate Marketing API

> Amazon Creators scores 48.7 (D) to Walmart Affiliate Marketing's 38.6 (E) 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-affiliate-api
- Markdown: https://www.anchorterminal.com/compare/amazon-creators-api-vs-walmart-affiliate-api.md (~2,150 tokens)
- Slim: https://www.anchorterminal.com/compare/amazon-creators-api-vs-walmart-affiliate-api.min.md (~680 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/amazon-creators-api-vs-walmart-affiliate-api.json (this page as data, same URL with Accept: application/json)
- 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
- Updated: 2026-10-14

Amazon Creators API scores 48.7 (D) on agent readiness against Walmart Affiliate Marketing API's 38.6 (E), and leads in 4 of 7 scored categories. Walmart Affiliate Marketing API leads on security & auth and payments & pricing. Both do product search for shoppers.

- Amazon Creators API: grade D, 48.7/100, rank #862 of 1076. Markdown https://www.anchorterminal.com/tools/amazon-creators-api.md · JSON https://www.anchorterminal.com/api/v1/tools/amazon-creators-api.json
- Walmart Affiliate Marketing API: grade E, 38.6/100, rank #995 of 1076. Markdown https://www.anchorterminal.com/tools/walmart-affiliate-api.md · JSON https://www.anchorterminal.com/api/v1/tools/walmart-affiliate-api.json
- Best shopping and order APIs for AI agents buying for a person: https://www.anchorterminal.com/best/shopping/index.md
- All 8 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 33
- Schema & documentation, 50 against 27
- Agent ergonomics, 85 against 57
- Maintenance & community, 41 against 5

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

### Walmart Affiliate Marketing API (E)

Good for: Product search and affiliate links for an agent recommending Walmart products and handing the purchase to the person.

Ahead on:
- Security & auth, 58 against 48
- Payments & pricing, 25 against 10

Watch for: No order, cart, order status or return operation in the affiliate API


## Score by category

| Category | Weight | Amazon Creators API | Walmart Affiliate Marketing API | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 45 | 33 | Amazon Creators API +12 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 50 | 27 | Amazon Creators API +23 |
| Agent ergonomics | 13% (16.2 this run) | 85 | 57 | Amazon Creators API +28 |
| Security & auth | 14% (17.5 this run) | 48 | 58 | Walmart Affiliate Marketing API +10 |
| Payments & pricing | 10% (12.5 this run) | 10 | 25 | Walmart Affiliate Marketing API +15 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 41 | 5 | Amazon Creators API +36 |
| Transparency & trust | 7% (8.8 this run) | 52 | 53 | Walmart Affiliate Marketing API +1 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **48.7 · D** | **38.6 · E** | |

## Facts side by side

| Fact | Amazon Creators API | Walmart Affiliate Marketing API |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Amazon.com Services LLC | Wal-Mart.com USA, LLC (Walmart Inc.) |
| Hosted endpoint | `https://creatorsapi.amazon/catalog/v1` | `https://developer.api.walmart.com/api-proxy/service/affil/product/v2` |
| Transports | HTTP | HTTP |
| Auth | OAuth | API 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 service under the Walmart I/O API Terms of Use (last updated 30 September 2020) |
| Read-only variant documented | yes | yes |
| 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 Affiliate Marketing API.** Live, free catalogue search and product lookup for approved Walmart affiliates, signed with an RSA key and capped at 5,000 calls a day. It cannot place or follow orders, and the Checkout API needs separate approval. The documentation renders only in a browser, and the API terms date from 2020 and still name a previous affiliate network.

## 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 Affiliate Marketing API

1. Generate a fresh WM_SEC.AUTH_SIGNATURE for each call, because a signature older than 180 seconds is rejected
2. Keep below 5,000 calls a day per application
3. Pass the Impact publisher ID so returned links earn commission
4. Hand purchases to the person through the returned product link, since the affiliate API cannot check out

## Questions

### Which is better for AI agents, Amazon Creators API or Walmart Affiliate Marketing API?

Amazon Creators API scores 48.7 (D) on agent readiness against Walmart Affiliate Marketing API's 38.6 (E), and leads in 4 of 7 scored categories. Walmart Affiliate Marketing API leads on security & auth and payments & pricing.

### Do Amazon Creators API and Walmart Affiliate Marketing API need an API key?

Amazon Creators API uses an OAuth sign-in. Walmart Affiliate Marketing API needs an API key.

### Can an agent call Amazon Creators API and Walmart Affiliate Marketing API without installing anything?

Yes. Amazon Creators API has a hosted endpoint at https://creatorsapi.amazon/catalog/v1 and Walmart Affiliate Marketing API at https://developer.api.walmart.com/api-proxy/service/affil/product/v2.


## For agents

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

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