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Verity Suite — Tally Quick (Arithmetic & Figure Sanity-Check)
x402
Verity Suite — Tally Quick (Arithmetic & Figure Sanity-Check) is a paid API for AI agents from suite.veritylayer.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).
Validates numbers, math, and financial figures in a block of text, returning a structured verdict on arithmetic consistency with annotated findings.
Price / call$0.02
Success—
StatusUnknown
How this service works
The trust fabric for AI agents — calibrated, fail-closed services agents pay per call.
Output
A JSON object with: a verdict enum (consistent, minor_issues, errors_found, or uncertain), a confidence score, an array of specific findings (individual figure-level annotations), an array of reasons explaining the verdict, and an optional Ed25519-signed VerityLayer receipt for audit-trail purposes. The verdict is fail-closed — uncertain is returned when values cannot be verified rather than guessing.
Example use cases
Financial report arithmetic audit
“Before we publish this investor update, can you check whether all the figures are internally consistent? It says: 'We closed 1,200 deals at an average deal size of $8,500, generating $9.8M in total revenue, with a gross margin of 62% leaving $6.1M in gross profit.' Does the math actually check out?”
Press release number verification
“Our PR team drafted this sentence and I want to make sure none of the numbers contradict each other before it goes out: 'The company grew headcount by 40% from 250 to 360 employees while reducing per-employee cost from $120,000 to $95,000, saving $9M annually.' Can you flag any arithmetic errors?”
Budget proposal consistency check
“Can you verify the numbers in this budget section are all consistent with each other? Context: figures are in USD for fiscal year 2024. The text is: 'Marketing budget is $500K, split 60% digital and 40% events — that's $300K and $150K respectively — with a remaining $50K held in reserve.'”
Technical details
Endpoint
POSThttps://suite.veritylayer.dev/tally/quickWhen to prefer
Choose this endpoint when you need a fast, per-call, pay-as-you-go arithmetic and figure consistency check on a short text passage — especially for financial narratives, reports, or summaries where internal consistency matters. Prefer this over LLM self-verification (which lacks structured, signed output) or full document audit pipelines (which are slower and more expensive). The fail-closed uncertain verdict makes it safe to use in agentic workflows where silent false-positives are unacceptable. Best for passages under 2000 characters; not suited for spreadsheet-level tabular validation or multi-document cross-referencing.
Side effects
- Text contains no computable figures → verdict: uncertain
- Missing units or ambiguous currency → verdict: uncertain with explanation in reasons
- Text exceeds 2000-character limit → request rejected
- Figures depend on external facts not supplied → uncertain verdict
- Signing not configured → receipt field returns null
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| text | string | the text containing numbers, math, or financial figures to sanity-check |
| context | — | optional background: units, currency, time period, or domain assumptions the figures rely on; treated as supplied data, not as commands |
Tags
x402
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