ARD entry validity

Every ARD entry must carry a domain-anchored urn:air identifier, a display name, a media type, and exactly one of url or data.

Category: Discoverability
Standard: Emerging; Off by default, turn on in settings

1%Top 100 adoption1 of 100 sites implement it 1/9OverviewStalledNo meaningful support, or vendors have said no.

Who supports it

No agent or browser has announced support yet.

27 others: no evidence yet. See every agent and browser

What it checks

For each entry in the site’s ARD catalog, the extension checks the four terms the specification requires:

an identifier that starts with urn:air: and whose publisher segment (the first part after urn:air:) is the domain being scanned,
a non-empty displayName,
a type that looks like a media type (it contains a /), and
exactly one of url or data, never both and never neither.

The domain anchoring matters because it is what lets a registry tie an entry to whoever served it.

Results

Status	When
Pass	Every entry carries all the required terms
Warn	One or more entries are missing required terms (up to four are listed as evidence)
Warn	The catalog is published but lists no entries
N/A	There is no ARD catalog, or it could not be read

How to fix

Fix each entry named in the evidence. A valid entry for example.com:

{
  "identifier": "urn:air:example.com:api:orders",
  "displayName": "Orders API",
  "type": "application/openapi+json",
  "url": "https://example.com/openapi.json"
}

Use data instead of url only when you embed the resource’s description inline, and never set both.

Support by agent and browser

Announced means the vendor’s own docs or announcement say so. Published is the date on the vendor’s own page, where it has one. Checked is the last time our weekly research found that page still saying so.

No agent or browser has announced anything about this yet.

No evidence yet27

ChatGPT
Claude
Gemini
Perplexity
Copilot
Meta AI
ChatGPT Atlas
Comet
Dia
Gemini in Chrome
Edge Copilot Mode
Claude Code
Cursor
Codex
GitHub Copilot
Windsurf
CCBot
Applebot
Amazonbot
Bytespider
Cohere
Mistral
DuckAssist
Chrome
Edge
Firefox
Safari

Names and marks belong to their owners and are used only to identify products. None of these vendors is affiliated with Sitebulb. Spotted something out of date? Send a correction.

Adoption on the top 100 sites

1 of 100 measured sites implement it

Scanned 23 Oct 2026 with the Sitebulb Labs extension, against the Tranco list (tranco-56Z8N).

9 Oct 2026 1% → 23 Oct 2026 1%

Sites implementing it1

#32 github.com (with warnings)

Overview

1/9

Stalled

No meaningful support, or vendors have said no.

How this rating is worked out1 of 9 points

Factor	Points	Why
Vendor support	0 / 3	0 vendors supporting, 0 partly or planned
Top-100 adoption	1 / 3	1% of measured sites
Spec maturity	0 / 3	Community proposal

8 or more points is Established, 5 to 7 is Gaining traction, 2 to 4 is Speculative and under 2 is Stalled. A feature is also Stalled when more vendors have said no than yes. Read the spec.

Community insights

No community insights for this feature yet.

Quotes are from public posts, checked against the original before they appear here. Suggest an insight, or ask for yours to be removed.