Nova retail context_delta context resource
Nova retail context_delta context resource
Answeringour last check, 2026-10-10
1 of 1checks answered this week
241 msmedian answer time
$0.02listed price per call
$0.02price 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/context-delta
| 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 |
|---|---|---|---|---|
| 2026-10-10 | valid payment request | 402 | $0.02 | 241 ms |
Example input (from the provider)
{
"body": {
"current_context": {
"authority_effect": "none",
"confidence": {
"basis": "Example client-carried observation for public contract discovery.",
"level": "medium"
},
"context_status": "partially_resolved",
"contradictions": [],
"evidence": [
{
"claim_or_observation": "last_price=100100 BTC-USD",
"evidence_id": "public-example-last-price",
"evidence_status": "observed",
"source_id": "public-example-source"
}
],
"freshness": {
"freshness_status": "fresh",
"observed_at": "2026-09-12T12:00:00Z",
"source_age_seconds": 0
},
"generated_at": "2026-09-12T12:00:00Z",
"limitations": [
{
"description": "Discovery example only; evidence remains client-carried and unverified.",
"impact": "limited_scope",
"limitation_id": "public-example-scope"
}
],
"provenance": [
{
"claim_reconciliation_status": "not_assessed",
"contribution_scope": [
"market_pair_last_price"
],
"observed_at": "2026-09-12T12:00:00Z",
"source_id": "public-example-source",
"source_status": "present_unverified",
"source_type": "public_example"
}
],
"resource_id": "state-ping-example-current",
"resource_type": "state_ping",
"schema_version": "0.1.0",
"subject": {
"label": "BTC/USD",
"subject_id": "BTC-USD",
"subject_type": "market_pair"
},
"unresolved_evidence": []
},
"generated_at": "2026-09-12T12:00:00Z",
"previous_context": {
"authority_effect": "none",
"confidence": {
"basis": "Example client-carried observation for public contract discovery.",
"level": "medium"
},
"context_status": "partially_resolved",
"contradictions": [],
"evidence": [
{
"claim_or_observation": "last_price=100000 BTC-USD",
"evidence_id": "public-example-last-price",
"evidence_status": "observed",
"source_id": "public-example-source"
}
],
"freshness": {
"freshness_status": "fresh",
"observed_at": "2026-09-12T11:55:00Z",
"source_age_seconds": 0
},
"generated_at": "2026-09-12T11:55:00Z",
"limitations": [
{
"description": "Discovery example only; evidence remains client-carried and unverified.",
"impact": "limited_scope",
"limitation_id": "public-example-scope"
}
],
"provenance": [
{
"claim_reconciliation_status": "not_assessed",
"contribution_scope": [
"market_pair_last_price"
],
"observed_at": "2026-09-12T11:55:00Z",
"source_id": "public-example-source",
"source_status": "present_unverified",
"source_type": "public_example"
}
],
"resource_id": "state-ping-example-previous",
"resource_type": "state_ping",
"schema_version": "0.1.0",
"subject": {
"label": "BTC/USD",
"subject_id": "BTC-USD",
"subject_type": "market_pair"
},
"unresolved_evidence": []
}
},
"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": {
"confidence": {
"additionalProperties": false,
"properties": {
"basis": {
"maxLength": 2000,
"minLength": 1,
"type": "string"
},
"level": {
"enum": [
"high",
"medium",
"low",
"indeterminate"
]
}
},
"required": [
"level",
"basis"
],
"type": "object"
},
"contradiction": {
"additionalProperties": false,
"properties": {
"contradiction_id": {
"maxLength": 200,
"minLength": 1,
"type": "string"
},
"evidence_ids": {
"items": {
"maxLength": 200,
"minLength": 1,
"type": "string"
},
"minItems": 2,
"type": "array",
"uniqueItems": true
},
"resolution_basis": {
"maxLength": 4000,
"minLength": 1,
"type": [
"string",
"null"
]
},
"status": {
"enum": [
"unresolved",
"partially_resolved",
"resolved"
]
},
"summary": {
"maxLength": 4000,
"minLength": 1,
"type": "string"
}
},
"required": [
"contradiction_id",
"evidence_ids",
"summary",
"status"
],
"type": "object"
},
"evidenceItem": {
"additionalProperties": false,
"properties": {
"claim_or_observation": {
"maxLength": 4000,
"minLength": 1,
"type": "string"
},
"evidence_id": {
"maxLength": 200,
"minLength": 1,
"type": "string"
},
"evidence_status": {
"enum": [
"observed",
"corroborated",
"contradicted",
"unresolved"
]
},
"source_id": {
"maxLength": 200,
"minLength": 1,
"type": "string"
}
},
"required": [
"evidence_id",
"source_id",
"claim_or_observation",
"evidence_status"
],
"type": "object"
},
"freshness": {
"additionalProperties": false,
"allOf": [
{
"if": {
"properties": {
"freshness_status": {
"enum": [
"fresh",
"aging",
"stale"
]
}
},
"required": [
"freshness_status"
]
},
"then": {
"properties": {
"observed_at": {
"format": "date-time",
"type": "string"
},
"source_age_seconds": {
"minimum": 0,
"type": "integer"
}
}
}
}
],
"properties": {
"freshness_status": {
"enum": [
"fresh",
"aging",
"stale",
"unknown"
]
},
"observed_at": {
"format": "date-time",
"type": [
"string",
"null"
]
},
"source_age_seconds": {
"minimum": 0,
"type": [
"integer",
"null"
]
}
},
"required": [
"observed_at",
"source_age_seconds",
"freshness_status"
],
"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":