An open technology. The engine inside MechaHub.
Language models are powerful. What they lack is context that is precise, attributable, and unambiguous. Xenkey is a deceptively simple format that gives a model exactly that — one verified claim about your business, bound to its conditions and evidence. When you assemble enough of them, you get a cloud of meaning: the sharpest input an agent can possibly receive.
A Xenkey ties a claim to its context, its conditions, and its evidence. That is the whole idea. Nothing more, nothing implicit, nothing copy-pasted from a brochure.
The full reference lives at xenkey.org. Below is the canonical shape of a single Xenkey — small enough to author by hand, strict enough that an agent on the other side of the world can reason about it without asking a follow-up question.
{
"$schema": "https://xenkey.org/schema/v1",
"id": "xk_01JX7CZ9M3A8BQ5N7PD0F2KTYZ",
"version": "1.0",
"subject": {
"anchor": "product/air-force-1@retail-asia#acmecorp",
"origin": "#acmecorp"
},
"claim": {
"type": "availability",
"statement": "Acme Corp. supplies 2 mm cold-rolled stainless steel coils, MOQ 3 tonnes, ex bonded warehouse Shenzhen."
},
"context": {
"applies_to": "b2b-wholesale",
"geography": ["CN", "APAC"],
"valid_from": "2026-01-01",
"valid_until": "2026-12-31"
},
"conditions": [
{ "type": "minimum", "field": "order_tonnes", "value": 3 },
{ "type": "range", "field": "lead_time_days", "min": 7, "max": 14 },
{ "type": "requires", "value": "import_license_destination_country" }
],
"evidence": [
{
"type": "certification",
"name": "SGS Quality Assurance 2026",
"uri": "https://certs.acmecorp.com/sgs-2026.pdf",
"hash": "sha256:8a2c1f…"
},
{
"type": "price_sheet",
"uri": "https://acmecorp.com/wholesale/2026-q2.pdf"
}
],
"attribution": {
"signed_by": "^acmecorp",
"signed_at": "2026-04-21T12:00:00Z",
"signature": "ed25519:…"
},
"lifecycle": {
"created_at": "2026-04-21T12:00:00Z",
"updated_at": "2026-04-21T12:00:00Z",
"supersedes": null,
"revoked": false
}
}{
"$schema": "https://xenkey.org/schema/v1",
"subject": { "anchor": "service/custom-fitting@store-47:retail-asia#acmecorp" },
"claim": {
"type": "capability",
"statement": "In-store custom fitting for trade customers, by appointment."
},
"context": { "geography": ["CN-SH"], "valid_from": "2026-03-01" },
"attribution": { "signed_by": "^acmecorp" }
}$schemarequiredSchema URI. Pins the document to a version of the Xenkey spec.idoptionalStable identifier assigned by Mecharim (ULID). Omit on author-side; set by the hub at ingest time.subject.anchorrequiredFull Anchor address using the canonical entity notation.subject.originoptionalConvenience copy of the Origin sigil. Derived from subject.anchor when absent.claim.typerequiredTyped claim: availability, capability, specification, pricing, certification, relation, policy, event.claim.statementrequiredOne human-readable sentence. No lists, no multiple facts, no marketing adjectives.contextoptionalWhen and where the claim applies. applies_to, geography (ISO 3166 codes), valid_from, valid_until.conditionsoptionalArray of typed constraints. Each entry turns an implicit caveat into a machine-checkable rule.evidenceoptionalArray of verifiable backing: certifications, documents, price sheets, datasets. URIs with optional content hashes.attributionrequiredWho said this, when, and the cryptographic signature. signed_by is a Crew sigil.lifecycleoptionalCreated/updated timestamps, supersedes pointer to a prior Xenkey, revocation flag.^acmecorp signs the record; individual Mechas inherit that authority for downstream messaging.SEO, metadata, structured markup — all of it was built around a search engine that matched strings. Modern AI does not match strings. It tries to understand intent and reconcile sources. Feed it loose marketing copy and it will invent what is missing. Feed it Xenkeys and it cites them.
Once your knowledge is Xenkey-structured, agents stop improvising about you. They quote, they compare, they recommend — accurately, every time. That precision is the entire reason Mecharim exists.