4OVER4.COM
VerifiedUCPMCP
A live check confirmed an agent protocol (valid UCP manifest or valid /.well-known/mcp).
63
Agent-readiness score
Check coverage: 100%
Last checked: 2026-10-17
What an agent can do here (per published signals)
- Publishes a valid UCP manifest (version 2026-04-08), so UCP-aware agents can discover its services automatically.
- Product catalog search / lookup is declared.
- Serves JSON at /.well-known/mcp.
- Provides /llms.txt with guidance for language models.
This lists what the shop advertises in machine-readable form. We do not test purchases, so nothing here guarantees that an automated checkout will succeed.
Facts
- Company country
- US (evidence: schema_org)
- Platform
- other
- Languages
- en
- Currency
- unknown
- Category
- unknown
- Payment methods mentioned on homepage
- amex, apple_pay, google_pay, mastercard, paypal, visa
- Guest checkout hint
- unknown
- Capabilities
- Search / catalog
- Data origin
- our own checks
- First seen
- 2026-10-17
Why we list this site as a shop
valid UCP manifest · shop signals on the homepage (a cart link) (75% confidence)
Agent endpoints
UCP manifest
https://4over4.com/.well-known/ucpUCP → MCP endpoint (declared in manifest, not tested by a call)
https://www.4over4.com/appsapi/mcp/.well-known/mcp
https://4over4.com/.well-known/mcpllms.txt
https://4over4.com/llms.txtrobots.txt
https://4over4.com/robots.txtcurl
curl -s https://4over4.com/.well-known/ucp | jq .ucp.capabilitiesProtocols
UCP v2026-04-08 – 2 capabilities
UCP capability list
dev.ucp.shopping.catalog.lookupdev.ucp.shopping.catalog.search
MCP – /.well-known/mcp
Score breakdown
Valid UCP manifest25/25UCP checkout0/10UCP cart0/5UCP catalog/search5/5UCP payment handlers0/5MCP endpoint10/10AI bots not blocked (robots.txt)15/15llms.txt5/5Sitemap3/3ai-plugin.json0/2
How the score works (heuristic) →
AI-bot rules in robots.txt
| Bot | robots.txt |
|---|---|
GPTBot | follows wildcard (some paths restricted) |
ClaudeBot | follows wildcard (some paths restricted) |
Google-Extended | follows wildcard (some paths restricted) |
PerplexityBot | follows wildcard (some paths restricted) |
OAI-SearchBot | follows wildcard (some paths restricted) |
ChatGPT-User | follows wildcard (some paths restricted) |
How the shop’s robots.txt treats six well-known AI crawlers/agents. “follows wildcard” means no bot-specific rule, the * rules apply.
Checks
| Check | Result | HTTP | Time (UTC) |
|---|---|---|---|
| robots.txt | ok | 200 | 2026-10-17T22:25:50Z |
| Homepage | ok | 200 | 2026-10-17T22:25:51Z |
| /llms.txt | ok | 200 | 2026-10-17T22:25:52Z |
| /.well-known/ucp | ok | 200 | 2026-10-17T22:25:53Z |
| /.well-known/mcp | ok | 200 | 2026-10-17T22:25:54Z |
| /.well-known/ai-plugin.json | absent | 404 | 2026-10-17T22:25:56Z |