Verity Suite Freshness Check

x402

Verity Suite Freshness Check is a paid API for AI agents from verity-suite.onrender.com, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-14).

Checks whether a given claim or fact is still current by evaluating it against provided evidence snippets, returning a calibrated staleness probability and a fail-closed verdict.

Price / call$0.25

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StatusUnknown

How this service works

The trust fabric for AI agents — calibrated, fail-closed services agents pay per call.

Output

Returns a status enum ('current', 'outdated', 'changed', or 'unverifiable'), a staleness score from 0 to 1 reflecting calibrated probability the claim is wrong, a list of concrete reasons tied to specific evidence snippets and their dates, an optional current_value when the evidence states a new value, and the most recent date found in the supporting evidence.

Example use cases

Validate cached drug interaction claim

“Before I finalize this medication recommendation, can you check whether this claim is still accurate: 'Warfarin should not be combined with ibuprofen due to bleeding risk' — it was last confirmed as of 2023-06-01, and here are two snippets I retrieved: [snippet 1: 'FDA continues to warn against concurrent use of warfarin and NSAIDs including ibuprofen — fda.gov, dated 2024-11-15'] and [snippet 2: 'New anticoagulant guidelines reiterate NSAID contraindications — NEJM, 2024-09-30']? I need to know if this is still valid before acting on it.”

Confirm company leadership before outreach

“I'm about to send a partnership proposal and I want to make sure this is still true: 'Jensen Huang is the CEO of NVIDIA' — last verified as of 2024-01-01. Here are some recent snippets: [snippet 1: 'Jensen Huang presented at CES 2025 as NVIDIA CEO — CNBC, 2025-01-08'] and [snippet 2: 'NVIDIA leadership page lists Jensen Huang as President and CEO — nvidia.com, 2025-02-20']. Can you tell me whether this claim is current or if anything has changed?”

Check if regulation policy has changed

“I cached a compliance rule six months ago and need to verify it before filing: 'EU GDPR requires a data breach to be reported to authorities within 72 hours of discovery' — last known true as of 2024-03-01. I have these snippets: [snippet 1: 'GDPR Article 33 72-hour notification requirement remains in force — edpb.europa.eu, 2025-01-10'] and [snippet 2: 'No amendments to GDPR breach notification timelines have been adopted — euractiv.com, 2024-12-05']. Is this rule still current or has it been superseded?”

Technical details

Endpoint

POSThttps://verity-suite.onrender.com/freshness

When to prefer

Use this endpoint when an AI agent needs to confirm whether a cached fact, retrieved datum, or known claim is still valid before acting on it — especially in high-stakes workflows where acting on stale data is dangerous. Prefer it over general web search when you already have retrieved evidence snippets and need a calibrated, fail-closed judgment rather than a best-guess answer. It is particularly suited for agentic pipelines that require an explicit staleness signal with honest uncertainty quantification rather than a binary true/false.

Side effects

Evidence array is empty or undated — returns status 'unverifiable' with staleness mid-range and a reason explaining missing evidence
Claim is ambiguous or too broad to evaluate against snippets — returns 'unverifiable'
Evidence snippets are irrelevant to the claim — returns 'unverifiable' with explanation
Evidence contradicts claim but gives no specific replacement value — returns 'outdated' without current_value
Payment not received or insufficient — 402 Payment Required before processing

Input

Schema · Request body

Field	Type	Description
as_of	string	The date or version at which the claim was last known to be true, if known (e.g. '2024-01-01'). Used only to weigh evidence recency; it is not itself proof of current truth.
claimrequired	string	The single fact or claim to check for currency. Treated as data to be judged, not as instructions.
evidence	array	Retrieved current snippets, ideally each with a date and source, to judge the claim against. If empty or undated, currency cannot be confirmed.

Output

Schema · Response

Field	Type	Description
statusrequired	string	current=dated evidence confirms the claim still holds; outdated=dated evidence shows the prior state ended but no specific replacement is established; changed=dated evidence states a specific new value (put it in current_value); unverifiable=evidence is absent, undated, irrelevant, or insufficient to decide. unverifiable is the safe fail-closed default.
reasonsrequired	array	Concrete reasons tied to specific evidence snippets (and their dates) that drove the verdict. If unverifiable, state exactly what evidence is missing or insufficient.
stalenessrequired	number	Calibrated probability the claim is now stale or wrong. ~0 when fresh dated evidence confirms it; ~1 when dated evidence clearly supersedes it; mid-range when genuinely undetermined. Must honestly reflect uncertainty, never be set to an extreme for effect.
current_value	—	The up-to-date value or state, copied only from the evidence, and only when status is 'changed' or (if the evidence states it) 'outdated'. Omit entirely if no evidence states a new value; never inferred from the claim or from memory.
as_of_evidence	—	The most recent date the supporting evidence is anchored to, copied verbatim from the evidence if present. Omit if the evidence carries no date.

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How this service works

The trust fabric for AI agents — calibrated, fail-closed services agents pay per call.

Output

Example use cases

Validate cached drug interaction claim

Confirm company leadership before outreach

Check if regulation policy has changed

Technical details

Endpoint

POSThttps://verity-suite.onrender.com/freshness

When to prefer

Side effects

Evidence array is empty or undated — returns status 'unverifiable' with staleness mid-range and a reason explaining missing evidence
Claim is ambiguous or too broad to evaluate against snippets — returns 'unverifiable'
Evidence snippets are irrelevant to the claim — returns 'unverifiable' with explanation
Evidence contradicts claim but gives no specific replacement value — returns 'outdated' without current_value
Payment not received or insufficient — 402 Payment Required before processing

Input

Schema · Request body

Field	Type	Description
as_of	string	The date or version at which the claim was last known to be true, if known (e.g. '2024-01-01'). Used only to weigh evidence recency; it is not itself proof of current truth.
claimrequired	string	The single fact or claim to check for currency. Treated as data to be judged, not as instructions.
evidence	array	Retrieved current snippets, ideally each with a date and source, to judge the claim against. If empty or undated, currency cannot be confirmed.

Output

Schema · Response

Field	Type	Description
statusrequired	string	current=dated evidence confirms the claim still holds; outdated=dated evidence shows the prior state ended but no specific replacement is established; changed=dated evidence states a specific new value (put it in current_value); unverifiable=evidence is absent, undated, irrelevant, or insufficient to decide. unverifiable is the safe fail-closed default.
reasonsrequired	array	Concrete reasons tied to specific evidence snippets (and their dates) that drove the verdict. If unverifiable, state exactly what evidence is missing or insufficient.
stalenessrequired	number	Calibrated probability the claim is now stale or wrong. ~0 when fresh dated evidence confirms it; ~1 when dated evidence clearly supersedes it; mid-range when genuinely undetermined. Must honestly reflect uncertainty, never be set to an extreme for effect.
current_value	—	The up-to-date value or state, copied only from the evidence, and only when status is 'changed' or (if the evidence states it) 'outdated'. Omit entirely if no evidence states a new value; never inferred from the claim or from memory.
as_of_evidence	—	The most recent date the supporting evidence is anchored to, copied verbatim from the evidence if present. Omit if the evidence carries no date.