# opencommerce vs Walmart Agent Gateway

> opencommerce scores 62 (B) to Walmart Agent Gateway's 8.5 (F) for product search for shoppers. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/opencommerce-vs-walmart-agent-gateway
- Markdown: https://www.anchorterminal.com/compare/opencommerce-vs-walmart-agent-gateway.md (~2,350 tokens)
- Slim: https://www.anchorterminal.com/compare/opencommerce-vs-walmart-agent-gateway.min.md (~780 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/opencommerce-vs-walmart-agent-gateway.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
- 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: 2026-10-31

opencommerce scores 62 (B) on agent readiness against Walmart Agent Gateway's 8.5 (F), and leads in every scored category. Both do product search for shoppers.

- opencommerce: grade B, 62/100, rank #528 of 1240. Markdown https://www.anchorterminal.com/tools/opencommerce.md · JSON https://www.anchorterminal.com/api/v1/tools/opencommerce.json
- Walmart Agent Gateway: grade F, 8.5/100, rank #1232 of 1240. 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 32 shopping comparisons: https://www.anchorterminal.com/compare/shopping/index.md

## Which one, for what

### opencommerce (B)

Good for: A company building a chat agent that buys for US shoppers at many online stores, restaurants and airlines through one tool, with payments approved by the shopper's passkey.

Ahead on:
- Reliability, 43 against 5
- Schema & documentation, 81 against 0
- Agent ergonomics, 69 against 0
- Security & auth, 68 against 10
- Payments & pricing, 40 against 10
- Maintenance & community, 75 against 0
- Transparency & trust, 63 against 51

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

Watch for: The tool description is 57 rules and about 14,500 characters, read on every call

### 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 | opencommerce | Walmart Agent Gateway | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 43 | 5 | opencommerce +38 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 81 | 0 | opencommerce +81 |
| Agent ergonomics | 13% (16.2 this run) | 69 | 0 | opencommerce +69 |
| Security & auth | 14% (17.5 this run) | 68 | 10 | opencommerce +58 |
| Payments & pricing | 10% (12.5 this run) | 40 | 10 | opencommerce +30 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 75 | 0 | opencommerce +75 |
| Transparency & trust | 7% (8.8 this run) | 63 | 51 | opencommerce +12 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **62 · B** | **8.5 · F** | |

## Facts side by side

| Fact | opencommerce | Walmart Agent Gateway |
| --- | --- | --- |
| Kind | SDK + MCP | MCP server |
| Vendor | Agentcard | Walmart Inc. |
| Hosted endpoint | `https://api.agentcard.sh` | no (local only) |
| Transports | HTTP |  |
| Auth | OAuth | OAuth or key |
| Pricing | Pay per use | Free |
| x402 | no | no |
| Licence | Proprietary. `@agent-cards/commerce-sdk` and the `agent-cards` CLI ship a licence of Agentcard Corporation that allows running them only to use Agentcard's services and forbids copying, reverse engineering and benchmarking a competing product. The repository they name is private | 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 |
| Tools exposed | 1 | none |
| Read-only variant documented | no | no |
| llms.txt | yes | no |
| Last release | 2026-10-30 | none |
| Terms last updated | 2026-07-10 | 2026-09-09 |
| Privacy policy last updated | 2026-10-21 | 2026-08-20 |
| Customer content may train models | not found in the text | yes |
| Terms restrict automated access | yes | 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 |
| Popularity | 2.7k npm/wk | none |

## Verdicts

**opencommerce.** One strictly typed buy tool covers search, cart, checkout and order updates, and every payment not covered by an auto-approval rule waits for the shopper's passkey. The tool's description runs to about 14.5 KB, the purchase API under it is undocumented, the monitoring page reports test passes rather than uptime, and the CLI says sign-ups are by invitation.

**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

### opencommerce

1. Call `buy` with the shopper's words in `ask`, and set `confirm` true only after the shopper says yes to the cart you showed
2. After a `timeout`, `unreachable` or `invalid_answer` error, read the conversation before sending the turn again, since the order may have gone through
3. Show the cart's `max_charge` beside its total, because the approval holds up to that amount
4. Use sandbox credentials for tests. `init` writes production credentials by default, and they place real orders
5. Check a store with `GET /buy/merchants` before sending a shopper there, and suggest another store when it is `held_back` or `supported` is false

### 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, opencommerce or Walmart Agent Gateway?

opencommerce scores 62 (B) on agent readiness against Walmart Agent Gateway's 8.5 (F), and leads in every scored category.

### Can an agent call opencommerce and Walmart Agent Gateway without installing anything?

opencommerce has a hosted endpoint at https://api.agentcard.sh. No hosted endpoint is listed for Walmart Agent Gateway.


## For agents

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

## Other comparisons with opencommerce or Walmart Agent Gateway

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

---

Query this catalogue directly over MCP: https://www.anchorterminal.com/mcp (Streamable HTTP, no key). How: https://www.anchorterminal.com/agents/#mcp