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The door: what an agent should know before it acts on a site

Quickstart: ask before you act

MCP, curl, Python, OpenAI Agents, Claude tool use, LangChain

The signed answer about any domain, laid out for a person

How each named agent behaves on sites, from verified requests

Capability registry

What sites declare agents can do, and what was verified

Verify a record

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One signed answer, no key.

Read, cite, connect or transact: ask first, verify the receipt offline, keep it with the action.

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Is your business record right where agents look?

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Two domains, side by side, same measurement

What search and answer engines read from a video

Browser extension

The second vantage point: from your own address, after JavaScript

The record on your phone, with receipts

Your site

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Developers

The door: the API by lane, the specs, SDKs, keys and quotas

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The signed answer: what it holds, how to verify it

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Typed clients, the offline verifier, conformance fixtures

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Every finding the measurement can raise, with its revision

Run the suite against your own implementation

Data

The door: census, conduct, proof and datasets, each with a denominator

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Proof and timestamps

How every record is sealed and anchored

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SEO and AI tools, measured

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Registry: media kits, llms.txt, entity graphs

Verified machine-readable profiles of real organisations

Learn

The door: guides, findings and the glossary, from measurements

The scan, stage by stage, and what each grade means

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Every term the product uses, defined

Who sends each agent, what it reads, how to verify it

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Glossary · Linked data and entities

ItemList

Schema.org markup representing an ordered or unordered collection.

What ItemList does not show

It describes listed items but does not prove they are visible, complete, ranked, or available.

Definitions that name ItemList

Related terms in Linked data and entities

The RDF and JSON-LD machinery behind structured data, and the schema.org types a business page actually needs.

IRI · URI · URL · Blank node · Literal · Datatype · Language tag · Predicate · Subject · Object · Named graph · Default graph · RDF dataset · Graph merge · Graph normalization · Canonical RDF · JSON-LD expansion · JSON-LD compaction · JSON-LD flattening · Remote context · Context poisoning · Vocabulary term · Schema type · Schema property · domainIncludes · rangeIncludes · Inverse property · BreadcrumbList · WebPage · Article · NewsArticle · BlogPosting · Product · Offer · Service · Place · PostalAddress · GeoCoordinates · ContactPoint · AggregateRating · Review · Author relationship · Publisher relationship · mainEntity

Questions about ItemList

What is ItemList?

Schema.org markup representing an ordered or unordered collection.

What does ItemList not show or guarantee?

It describes listed items but does not prove they are visible, complete, ranked, or available.

Which area of the glossary does ItemList belong to?

Linked data and entities: The RDF and JSON-LD machinery behind structured data, and the schema.org types a business page actually needs.

← Inverse property · BreadcrumbList →

See it in the full glossary · 731 terms across 19 areas.