Nova retail state_ping context resource
Nova retail state_ping context resource
Answeringour last check, 2026-10-03
1 of 1checks answered this week
249 msmedian answer time
$0.002listed price per call
$0.002price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://nova-retail-controlled-proof.onrender.com/retail/v1/context/state-ping
| Category | Commerce and shopping |
|---|---|
| Provider host | nova-retail-controlled-proof.onrender.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-03 | valid payment request | 402 | $0.002 | 249 ms |
Example input (from the provider)
{
"body": {
"generated_at": "2026-09-09T20:00:00Z",
"observations": [
{
"authority_effect": "none",
"claims": [
{
"claim_id": "market_pair_last_price",
"claim_or_observation": "last_price=100000 BTC-USD",
"claim_status": "observed"
}
],
"freshness_input": {
"derivation_status": "derived_from_timestamps",
"source_age_seconds": 0
},
"integrity": {
"algorithm": "sha256",
"digest": "c5df653ec6f407c32fdca147310a463c471999aee6839ee35e6d418eb7c2669b",
"scope": "normalized_claims",
"trust_semantics": "content_identity_only"
},
"limitations": [
{
"description": "Example source observation; authority remains source-scoped.",
"impact": "limited_scope",
"limitation_id": "example-source-scope"
}
],
"observation_id": "external-example-observation",
"observed_at": "2026-09-09T20:00:00Z",
"provenance": {
"normalization_version": "0.1.0",
"provider_observation_reference": "provider-reference-example",
"retrieval_mode": "provider_adapter",
"verification_basis": "not_verified"
},
"received_at": "2026-09-09T20:00:00Z",
"schema_version": "0.1.0",
"source_id": "coinbase_exchange_ticker",
"source_status": "observed",
"subject": {
"label": "BTC/USD",
"subject_id": "BTC-USD",
"subject_type": "market_pair"
},
"verification_status": "unverified"
}
],
"subject": {
"label": "BTC/USD",
"subject_id": "BTC-USD",
"subject_type": "market_pair"
}
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false,
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"$defs": {
"claim": {
"additionalProperties": false,
"properties": {
"claim_id": {
"maxLength": 200,
"minLength": 1,
"type": "string"
},
"claim_or_observation": {
"maxLength": 4000,
"minLength": 1,
"type": "string"
},
"claim_status": {
"enum": [
"observed",
"unresolved",
"rejected"
]
}
},
"required": [
"claim_id",
"claim_or_observation",
"claim_status"
],
"type": "object"
},
"freshnessInput": {
"additionalProperties": false,
"properties": {
"derivation_status": {
"enum": [
"derived_from_timestamps",
"not_available"
]
},
"source_age_seconds": {
"minimum": 0,
"type": [
"integer",
"null"
]
}
},
"required": [
"source_age_seconds",
"derivation_status"
],
"type": "object"
},
"integrity": {
"additionalProperties": false,
"properties": {
"algorithm": {
"enum": [
"sha256",
"none"
]
},
"digest": {
"pattern": "^[a-f0-9]{64}$",
"type": [
"string",
"null"
]
},
"scope": {
"enum": [
"normalized_claims",
"no_content"
]
},
"trust_semantics": {
"const": "content_identity_only"
}
},
"required": [
"algorithm",
"digest",
"scope",
"trust_semantics"
],
"type": "object"
},
"limitation": {
"additionalProperties": false,
"properties": {
"description": {
"maxLength": 4000,
"minLength": 1,
"type": "string"
},
"impact": {
"enum": [
"none_known",
"limited_scope",
"material",
"indeterminate"
]
},
"limitation_id": {
"maxLength": 200,
"minLength": 1,
"type": "string"
}
},
"required": [
"limitation_id",
"description",
"impact"
],
"type": "object"
},
"provenance": {
"additionalProperties": false,
"properties": {
"normalization_version": {
"const": "0.1.0"
},
"provider_observation_reference": {
"maxLength": 500,
"type": [
"string",
"null"
]
},
"retrieval_mode": {
"enum": [
"fixture",
"synthetic",
"provider_adapter"
]
},
"verification_basis": {
"enum": [
"fixture_contract",
"source_reference_check",
"not_verified",
"verification_failed",
"not_applicable"
]
}
},
"required": [
"provider_observation_reference",
"retrieval_mode",
"verification_basis",
"normalization_version"
],
"type": "object"
},
"publicSourceObservation": {
"additionalProperties": false,
"allOf": [
{
"if": {
"properties": {
"source_status": {
"enum": [
"observed",
"stale"
]
}
},
"required": [
"source_status"
]
},
"then": {
"properties": {
"claims": {
"minItems": 1
},
"freshness_input": {
"properties": {
"derivation_status": {
"const": "derived_from_timestamps"
},
"source_age_seconds": {
"minimum": 0,
"type": "integer"
}
}
},
"integrity": {
"properties": {
"algorithm": {
"con