Datasets:

ArcReport
/

arc-agent-commerce

@@ -96,7 +96,7 @@ Counted from `store_answers.csv` in snapshot 2026-10-12.r3. `market` is United S
 | `checked_at` | Date (UTC) of the latest automated check. |
 | `can_agents_find_products` | Could an AI agent search the store's products through a machine-readable agent connection and get a product back (the specific product, for the ~90 Index stores where ARC tests one)? yes / no / blocked (the store returned a block to ARC's automated HTTP check on checked_at; this is a response to ARC's checker, not a finding against the store) / not_tested (the check did not finish). "no" is about agent connections only: an agent may still click through the website like a person. |
 | `can_agents_read_price_and_stock` | Does the product page ARC opened list price and stock in structured data agents can read (schema.org Product)? yes / no / not_tested (no product page could be opened). |
-| `can_agents_get_checkout_link` | Did the agent connection hand back a checkout link for a product it returned? yes / no / not_tested. ARC stops there: it never pays or places an order, so "yes" means an agent can reach checkout, not that a purchase was completed. |
 | `agent_catalog_type` | Which agent connection answered with a product search tool: Shopify UCP MCP, Shopify Storefront MCP, or none. |
 | `ucp_profile_valid` | Does the store publish a valid Universal Commerce Protocol profile at /.well-known/ucp? yes / no / unknown (blocked or errored). A valid profile is stricter than `publishes_ucp_file`: it needs a dated version and a shopping service. |
 | `publishes_ucp_file` | Does the store publish a UCP file at /.well-known/ucp? yes = HTTP 200 and JSON with a version plus services or capabilities. no = HTTP 404 or 410. unknown = HTTP 403, 429, 5xx, a timeout, or a response that was not JSON. Empty means this check is not recorded. Unknown and empty never count as no. This means the store publishes a UCP file. It does not mean an agent can reach checkout there. |
@@ -105,7 +105,7 @@ Counted from `store_answers.csv` in snapshot 2026-10-12.r3. `market` is United S
 | `blocks_ai_crawlers` | Does robots.txt disallow at least one of the AI crawlers ARC tracks (answer, search or training bots) from the homepage or tested product? yes / no / unknown (robots.txt could not be read). A rule in a file, not an observed block. |
 | `blocks_ai_answer_agents` | Same, but only for AI assistants fetching pages for a user (for example ChatGPT-User, Perplexity-User). yes / no / unknown. |
 | `browser_cart_test` | Result of ARC's separate browser cart test, where it exists (about 90 stores): for example "2 of 5 added to cart". Empty means no browser test. |
-| `verdict` | A plain answer to "can AI agents reach checkout at this store?", the same sentence as the store's ARC page. The strongest answer is "AI agents can reach checkout": ARC's agent got a checkout link. ARC always stops before paying, so it never claims a completed purchase. |
 | `top_fix` | The most useful change for the store, in plain words, the same as the first fix on its ARC page. Empty when nothing is needed. |
 | `checked_by` | How the answer was measured: "automated HTTP check" or "automated HTTP check + browser cart test". |
 | `evidence_url` | The store's page on ARC with the full details. |
@@ -162,9 +162,22 @@ Older snapshots in /data/history can include OpenStreetMap-derived hosts. Those
 Hugging Face card (abab7575/arc-open `docs/dataset-card.md`, same paragraph): OpenStreetMap-derived directory rows are left out of this CC-BY-4.0 dataset because they are ODbL share-alike. Older snapshots in /data/history can include those hosts. Those hosts are © OpenStreetMap contributors under the Open Database License (ODbL), not CC-BY-4.0.
-## Licence, citation, corrections
-[CC-BY-4.0](https://creativecommons.org/licenses/by/4.0/). Attribution: **ARC, arcreport.ai**. Store owners can ask for a correction or removal at [arcreport.ai/contact](https://www.arcreport.ai/contact).
 ## Files and versioning
@@ -202,7 +215,7 @@ The technical tables carry `snapshot_date`, `method_version` and `evidence` (`me
 | catalog_tool, catalog_found | Catalog tool exposed and whether it returned the product |
 | cart_status | `link`, `unavailable`, `not_offered`, `error` or `skipped` |
 | ucp_profile | `/.well-known/ucp` validity: `valid`, `invalid`, `absent`, `blocked` or `error`. Stricter than `ucp_file`. |
-| ucp_file | `/.well-known/ucp` file: `detected` (HTTP 200 JSON with a version plus services or capabilities), `not_found` (404 or 410), `unknown` (403, 429, 5xx, timeout or non-JSON), or empty when not recorded. Empty and unknown are not a no. This is a published file, not a completed purchase. |
 | mcp_blocked | The store blocked the MCP request |
 | checked_at | UTC time of the check |
 | evidence | `measured` for a clean completed check; `inferred` when blocked, errored or failed |

 | `checked_at` | Date (UTC) of the latest automated check. |
 | `can_agents_find_products` | Could an AI agent search the store's products through a machine-readable agent connection and get a product back (the specific product, for the ~90 Index stores where ARC tests one)? yes / no / blocked (the store returned a block to ARC's automated HTTP check on checked_at; this is a response to ARC's checker, not a finding against the store) / not_tested (the check did not finish). "no" is about agent connections only: an agent may still click through the website like a person. |
 | `can_agents_read_price_and_stock` | Does the product page ARC opened list price and stock in structured data agents can read (schema.org Product)? yes / no / not_tested (no product page could be opened). |
+| `can_agents_get_checkout_link` | Did the agent connection hand back a checkout link for a product it returned? yes / no / not_tested. ARC stops there: it never pays or places an order, so "yes" means an agent can reach checkout, not that an order was placed. |
 | `agent_catalog_type` | Which agent connection answered with a product search tool: Shopify UCP MCP, Shopify Storefront MCP, or none. |
 | `ucp_profile_valid` | Does the store publish a valid Universal Commerce Protocol profile at /.well-known/ucp? yes / no / unknown (blocked or errored). A valid profile is stricter than `publishes_ucp_file`: it needs a dated version and a shopping service. |
 | `publishes_ucp_file` | Does the store publish a UCP file at /.well-known/ucp? yes = HTTP 200 and JSON with a version plus services or capabilities. no = HTTP 404 or 410. unknown = HTTP 403, 429, 5xx, a timeout, or a response that was not JSON. Empty means this check is not recorded. Unknown and empty never count as no. This means the store publishes a UCP file. It does not mean an agent can reach checkout there. |
 | `blocks_ai_crawlers` | Does robots.txt disallow at least one of the AI crawlers ARC tracks (answer, search or training bots) from the homepage or tested product? yes / no / unknown (robots.txt could not be read). A rule in a file, not an observed block. |
 | `blocks_ai_answer_agents` | Same, but only for AI assistants fetching pages for a user (for example ChatGPT-User, Perplexity-User). yes / no / unknown. |
 | `browser_cart_test` | Result of ARC's separate browser cart test, where it exists (about 90 stores): for example "2 of 5 added to cart". Empty means no browser test. |
+| `verdict` | A plain answer to "can AI agents reach checkout at this store?", the same sentence as the store's ARC page. The strongest answer is "AI agents can reach checkout": ARC's agent got a checkout link. ARC always stops before paying, so it never claims more than reached checkout. |
 | `top_fix` | The most useful change for the store, in plain words, the same as the first fix on its ARC page. Empty when nothing is needed. |
 | `checked_by` | How the answer was measured: "automated HTTP check" or "automated HTTP check + browser cart test". |
 | `evidence_url` | The store's page on ARC with the full details. |
 Hugging Face card (abab7575/arc-open `docs/dataset-card.md`, same paragraph): OpenStreetMap-derived directory rows are left out of this CC-BY-4.0 dataset because they are ODbL share-alike. Older snapshots in /data/history can include those hosts. Those hosts are © OpenStreetMap contributors under the Open Database License (ODbL), not CC-BY-4.0.
+## License & attribution
+The data ARC publishes is licensed under the Creative Commons Attribution 4.0 International Public License ([CC BY 4.0](https://creativecommons.org/licenses/by/4.0/)).
+- Cite as: **ARC (arcreport.ai)**. Link: [https://www.arcreport.ai](https://www.arcreport.ai) (dataset: [https://www.arcreport.ai/data](https://www.arcreport.ai/data)).
+- Terms: [https://www.arcreport.ai/terms](https://www.arcreport.ai/terms).
+- Snapshot `2026-10-12.r2` includes 203 OpenStreetMap-derived rows under the [ODbL-1.0](https://opendatacommons.org/licenses/odbl/1-0/). Attribution: © OpenStreetMap contributors. Later snapshots leave those rows out.
+- Third-party data is not relicensed. Tranco ranks and lists are not published and are not licensed by ARC.
+- Wikidata-derived fields are CC0.
+- Host names discovered via Common Crawl: source cited as Common Crawl (commoncrawl.org).
+- Unpublished discovery-source data is excluded. Hosts that opted out are excluded.
+- CC BY 4.0 covers only ARC's own measurements.
+- Results are advisory. ARC stops before payment.
+- Code is MIT (github.com/abab7575/arc-open).
+Contact: arcreport@mail.grokbot.com. Store owners can ask for a correction or removal at [arcreport.ai/contact](https://www.arcreport.ai/contact).
 ## Files and versioning
 | catalog_tool, catalog_found | Catalog tool exposed and whether it returned the product |
 | cart_status | `link`, `unavailable`, `not_offered`, `error` or `skipped` |
 | ucp_profile | `/.well-known/ucp` validity: `valid`, `invalid`, `absent`, `blocked` or `error`. Stricter than `ucp_file`. |
+| ucp_file | `/.well-known/ucp` file: `detected` (HTTP 200 JSON with a version plus services or capabilities), `not_found` (404 or 410), `unknown` (403, 429, 5xx, timeout or non-JSON), or empty when not recorded. Empty and unknown are not a no. This is a published file, not proof an agent can reach checkout. |
 | mcp_blocked | The store blocked the MCP request |
 | checked_at | UTC time of the check |
 | evidence | `measured` for a clean completed check; `inferred` when blocked, errored or failed |