The raw results behind the answer above, for developers.
Agent Reachability Matrix
Will personal agents reach you and buy?
Existing ARC evidence shows discovery rails, checkout paths, and known block risks. A detected rail is not a promise that a named agent can use it.
MeasuredInferredUnknownPublic report
Measured: ARC probe or browser cart test · Inferred: possible surface path · Unknown: no conclusion · Public report: external source.
ARC browser shopper A
ARC persona (alias id muse) · shared rails + ARC browser cart test
- Discover
- Unknown
Not confirmed
- Buy / checkout
- Measured
Browser cart succeeded
Published Index attempt added the product to cart; no live agent session or purchase.
- Allow vs block risk
- Unknown
Not confirmed
Watching for PAP v0.1; identity and permission rails not confirmed.
ARC browser shopper B
ARC persona (alias id instinct) · shared rails + ARC browser cart test
- Discover
- Unknown
Not confirmed
- Buy / checkout
- Measured
Browser cart succeeded
Published Index attempt added the product to cart; no live agent session or purchase.
- Allow vs block risk
- Unknown
Not confirmed
Watching for PAP v0.1; identity and permission rails not confirmed.
ARC browser shopper C
ARC persona (alias id grok) · shared rails + ARC browser cart test
- Discover
- Unknown
Not confirmed
- Buy / checkout
- Measured
Browser cart succeeded
Published Index attempt added the product to cart; no live agent session or purchase.
- Allow vs block risk
- Unknown
Not confirmed
Watching for PAP v0.1; identity and permission rails not confirmed.
ARC browser shopper D
ARC persona (alias id openai-dots) · shared rails + ARC browser cart test
- Discover
- Unknown
Not confirmed
- Buy / checkout
- Measured
Browser cart succeeded
Published Index attempt added the product to cart; no live agent session or purchase.
- Allow vs block risk
- Unknown
Not confirmed
Watching for PAP v0.1; identity and permission rails not confirmed.
ARC browser shopper E
ARC persona (alias id openclaw) · shared rails + ARC browser cart test
- Discover
- Unknown
Not confirmed
- Buy / checkout
- Measured
Browser cart succeeded
Published Index attempt added the product to cart; no live agent session or purchase.
- Allow vs block risk
- Unknown
Not confirmed
Watching for PAP v0.1; identity and permission rails not confirmed.
UCP path (e.g. Google AI Mode / Gemini)
Universal Commerce Protocol surface · eligibility unconfirmed
- Discover
- Unknown
Not confirmed
Google surface eligibility not tested.
- Buy / checkout
- Unknown
Not confirmed
- Allow vs block risk
- Unknown
Not confirmed
Watching for PAP v0.1; identity and permission rails not confirmed.
Rail / discovery evidence checked 2026-10-11 16:36 UTC. Index cart evidence uses the published scan below.
Measured means an ARC HTTP rail check or an Index browser cart test, not a live Muse, Instinct, ChatGPT, Gemini, Grok, or OpenClaw session. Checkout handoff is not a completed purchase. ARC is independent and not affiliated with Meta, Sierra, Shopify, OpenAI, or Google. PAP support is not confirmed.
Can agents check out?
Real HTTP agent-catalog check. Does not change the Index score.
Google agentic checkout readiness
Public checks not fully measured
- Valid /.well-known/ucp profile: Not measured yet
- Return policy findable: Not measured yet
- Return window stated: Not measured yet
- Shipping policy findable: Not measured yet
- Customer support contact findable: Not measured yet
- Product GTIN / MPN / SKU present: Not measured yet
Not measured items need a successful re-check before readiness can be established.
native_commerce(checkout_eligibility): Can't be checked from outside — set in your Merchant Center feed
These are the public parts of Google's checklist that ARC can check from outside. This is not Google approval or certification. See Google's Merchant Center help on UCP / agentic checkout.
Platform: measured on the next check.
Personal Agent Protocol
PAP (announced Oct 2026 by Meta and Sierra with industry partners) is an open standard for how personal agents discover and work with businesses — website discovery, OAuth session, then site / APIs (MCP, OpenAPI) / company agent. ARC already answers the two-lane question: can agents discover you, and can they buy from you. Until the v0.1 spec ships, we probe sensible discovery candidates and label unknown clearly. ARC is not affiliated with Meta or Sierra.
Watching for PAP v0.1
No PAP-specific discovery markers detected yet. Spec v0.1 is not published; ARC is watching, not inventing support.
- UCP /.well-known/ucp (related)
- HTTP 302
- UCP profile (rails)
- No rails row yet
- Shopify WebMCP (related)
- No rails row yet
- Storefront MCP tools (related)
- No rails row yet
- MCP well-known (related)
- None found
Not a claim of PAP support. Spec v0.1 is expected later this month; reference implementation coming. Related surfaces below (UCP, WebMCP, MCP well-known) are existing agent-discovery checks — not PAP.
Probed 2026-10-11 16:36 UTC · source announcement: sierra.ai/blog/introducing-personal-agent-protocol
Index · browser lane
Browser cart attempts. Score is this lane only.
86/100 B · Mostly agent-ready
5 of 5 browser cart shoppers added the product to the cart
Stopped at: Added to cart (stopped before payment)
Tested 5 Oct 2026
Full Index page →
Agent facts (Jev)
Typed decisions over an HTTP product scrape. Not a live personal-agent session.
What one AI model got wrong
Quoted mismatches only, from one AI model’s read-back (currently Grok via API). One model, not a consensus.
One AI model's read-back says your price is $20 (66% off from $58). Your site says $65.
The model said: $20 (66% off from $58)
Store says: “"sku": "156681-1386544"”
schema.org JSON-LD
One AI model's read-back says your shipping cost is Free over a threshold (add to qualify). Your site says $50.
The model said: Free over a threshold (add to qualify)
Store says: “SHIPPING OPTION GET YOUR ORDER ORDERS OVER $50 ORDERS UNDER $50 IMPORTANT INFO DISPATCH TIME Standard Shipping 4-8 Business Days FREE $6.99 USD Our Standard shipping service will arrive within 4-8 business days.”
Policy page
One AI model's read-back recommended this.
What agents get wrong →
History
From stored ARC rows only.
- factsAgent facts for Nellie Halter Mini Dress Blue Check2026-10-07 02:33 UTCOpen →
- factsAgent facts for Nellie Halter Mini Dress Blue Check2026-10-07 01:48 UTCOpen →
- grokOne AI model's read-back recommended this.2026-10-05 23:37 UTCOpen →
- indexIndex browser score 86/1002026-10-05 05:33 UTCOpen →
Is this your store? Claim this card free →Needs a free email magic-link sign-in, then a DNS record or HTTPS file.Claims never change ARC’s measured scores.
What Grok tells shoppers is a real model call via API, checked against the store's pages, not the consumer Grok app. Whether agents reach checkout is two lanes: a real HTTP check of the store's agent catalog, and five ARC browser cart tests. Those attempts are not a live Muse, Instinct, Grok Bot, OpenAI dots, or OpenClaw session. The score is the browser lane. The catalog check does not change it.