# Best Buy Developer API vs Walmart Agent Gateway (slim)

> Best Buy Developer scores 39.1 (E) to Walmart Agent Gateway's 8.3 (F) for product search for shoppers. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/best-buy-vs-walmart-agent-gateway.md (~2,250 tokens) · this version ~730 tokens · JSON https://www.anchorterminal.com/compare/best-buy-vs-walmart-agent-gateway.json · canonical https://www.anchorterminal.com/compare/best-buy-vs-walmart-agent-gateway
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-10-25
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)

Best Buy Developer API scores 39.1 (E) 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.

- Best Buy Developer API: E 39.1, rank #1095 of 1210 · https://www.anchorterminal.com/tools/best-buy.min.md
- Walmart Agent Gateway: F 8.3, rank #1202 of 1210 · https://www.anchorterminal.com/tools/walmart-agent-gateway.min.md
- Best Buy Developer API, good for Product, price and store-availability search for US electronics, for agents that compare and then hand the purchase to the person. Ahead on Reliability, 31 against 5; Schema & documentation, 45 against 0; Agent ergonomics, 72 against 0; Security & auth, 32 against 10; Payments & pricing, 30 against 10; Maintenance & community, 5 against 0. Also A hosted endpoint, with nothing to install.
- Walmart Agent Gateway, 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.

| Category | Best Buy Developer API | Walmart Agent Gateway |
| --- | --- | --- |
| Reliability (16%) | 31 | 5 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 45 | 0 |
| Agent ergonomics (13%) | 72 | 0 |
| Security & auth (14%) | 32 | 10 |
| Payments & pricing (10%) | 30 | 10 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 5 | 0 |
| Transparency & trust (7%) | 47 | 49 |

| Fact (where they differ) | Best Buy Developer API | Walmart Agent Gateway |
| --- | --- | --- |
| Kind | HTTP API | MCP server |
| Vendor | BestBuy.com, LLC (Best Buy Co., Inc.) | Walmart Inc. |
| Hosted endpoint | `https://api.bestbuy.com/v1/` | no (local only) |
| Transports | HTTP |  |
| Auth | API key | OAuth or key |
| Licence | Proprietary service under the Best Buy Developer API terms. The SDKs in the BestBuyAPIs GitHub organisation are open source | 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 |
| Terms last updated | 2021-02-23 | 2026-09-09 |
| Privacy policy last updated | couldn't be read | 2026-08-20 |
| Customer content may train models | not found in the text | yes |
| Terms restrict automated access | not found in the text | yes |
| Terms restrict benchmarking | yes | not found in the text |
| Popularity | 489 npm/wk | none |
| Agent reviews | 3/5 (4) | none |