# Services from suite.veritylayer.dev on Zero

> suite.veritylayer.dev serves 45 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/suite.veritylayer.dev
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/suite.veritylayer.dev/health.json

## Services

- [Verity Suite Citation Endpoint](https://www.zero.xyz/c/verity-suite-citation-endpoint-e3e2a7f6/llms.txt): $0.25/call via x402. Finds and returns calibrated supporting citations for a factual statement, with a signed verdict on how strongly the sources establish the claim.
- [Verity Suite Tally — Arithmetic & Financial Figure Sanity Checker](https://www.zero.xyz/c/verity-suite-tally-arithmetic-financial-figure-sanity-checker-63631957/llms.txt): $0.06/call via x402. Sanity-checks text containing numbers, math, or financial figures for arithmetic errors, contradictions, and impossible values, returning a structured verdict with findings and confidence score.
- [Verity Suite Sentinel Quick Scan](https://www.zero.xyz/c/verity-suite-sentinel-quick-scan-0ee284ad/llms.txt): $0.02/call via x402. Scans untrusted text or tool output for prompt injection, jailbreak attempts, and manipulation targeting AI agents, returning a verdict with threat score and actionable recommendation.
- [Verity Suite – Claim Freshness Check](https://www.zero.xyz/c/verity-suite-claim-freshness-check-3fb9af17/llms.txt): $0.25/call via x402. Checks whether a given fact or claim is still current by evaluating it against retrieved evidence snippets, returning a calibrated freshness verdict.
- [Verity Suite Compass](https://www.zero.xyz/c/verity-suite-compass-3a7bad32/llms.txt): $0.06/call via x402. Evaluates a set of candidate options against stated constraints and evidence, returning a structured verdict (recommend, tentative, gather_more_info, or no_viable_option) with confidence score and reasons.
- [Verity Suite – Cite Pro (Citation Finder)](https://www.zero.xyz/c/verity-suite-cite-pro-citation-finder-275dd063/llms.txt): $0.35/call via x402. Given a factual statement, finds and returns calibrated supporting citations with a verdict on how well the sources establish the claim.
- [Verity Suite – Distill Quick](https://www.zero.xyz/c/verity-suite-distill-quick-32fc2d3a/llms.txt): $0.02/call via x402. Extracts structured key-value facts from a text snippet, returning only claims explicitly grounded in the source text with a fidelity signal.
- [Verity Suite Concord Quick — Policy Compliance Checker](https://www.zero.xyz/c/verity-suite-concord-quick-policy-compliance-checker-f6dc7bf8/llms.txt): $0.02/call via x402. Evaluates a piece of text against a policy, spec, or contract and returns a calibrated compliance verdict (compliant, non_compliant, partial, or uncertain) with per-clause reasoning and an optional signed receipt.
- [Verity Suite — PII & Secret Redaction (Pro)](https://www.zero.xyz/c/verity-suite-pii-secret-redaction-pro-c9b4af23/llms.txt): $0.15/call via x402. Scans text payloads for PII, secrets, and credentials before they are sent or stored, returning a signed verdict and structured findings with severity
- [Verity Suite — Faithful (Faithfulness Checker)](https://www.zero.xyz/c/verity-suite-faithful-faithfulness-checker-b530c256/llms.txt): $0.06/call via x402. Checks whether a candidate summary or translation is faithful to its source text, returning a verdict, faithfulness score, and claim-level reasons.
- [Verity Suite — Tally Quick (Arithmetic & Figure Sanity-Check)](https://www.zero.xyz/c/verity-suite-tally-quick-arithmetic-figure-sanity-check-5ef4a51e/llms.txt): $0.02/call via x402. Validates numbers, math, and financial figures in a block of text, returning a structured verdict on arithmetic consistency with annotated findings.
- [Verity Suite Freshness Pro](https://www.zero.xyz/c/verity-suite-freshness-pro-7b10ebc5/llms.txt): $0.35/call via x402. Checks whether a specific claim is still current or has become outdated/changed, using provided evidence snippets, and returns a fail-closed verdict with reasons.
- [Verity Suite Citation Quick](https://www.zero.xyz/c/verity-suite-citation-quick-48401668/llms.txt): $0.03/call via x402. Given a factual statement, retrieves and evaluates supporting sources, returning a calibrated verdict, support score, citations, and a cryptographically signed receipt.
- [Verity Suite Sentinel — Prompt Injection & Manipulation Scanner](https://www.zero.xyz/c/verity-suite-sentinel-prompt-injection-manipulation-scanner-f579c59b/llms.txt): $0.06/call via x402. Scans untrusted text or tool outputs for hidden prompt-injection attacks, jailbreaks, and manipulation attempts, returning a signed verdict with threat score and evidence
- [Verity Suite — Sieve Pro (Content Moderation)](https://www.zero.xyz/c/verity-suite-sieve-pro-content-moderation-d1bc098a/llms.txt): $0.15/call via x402. Screens a piece of content against a moderation policy and returns a pass/block decision with violation risk score and concrete reasons
- [Verity Suite Sieve Quick](https://www.zero.xyz/c/verity-suite-sieve-quick-d2a05d7a/llms.txt): $0.02/call via x402. Screens content against a moderation policy and returns a pass/fail decision with violation risk score and cited reasons
- [Verity Suite – Claim Freshness Checker](https://www.zero.xyz/c/verity-suite-claim-freshness-checker-e0eeea54/llms.txt): $0.03/call via x402. Checks whether a given factual claim is still current by judging it against retrieved evidence snippets, returning a fail-closed freshness verdict (current, outdated, changed, or unverifiable).
- [Verity Suite – Agent Action Guardrail Check](https://www.zero.xyz/c/verity-suite-agent-action-guardrail-check-c29bed47/llms.txt): $0.08/call via x402. Evaluates an AI agent's proposed action against optional policy rules and context, returning a calibrated allow/review/block decision with risk score and signed receipt.
- [Verity Suite Sentinel Pro — Prompt Injection & Manipulation Scanner](https://www.zero.xyz/c/verity-suite-sentinel-pro-prompt-injection-manipulation-scanner-ad8e5d40/llms.txt): $0.15/call via x402. Scans untrusted text or tool output for hidden prompt-injection, jailbreak attempts, and manipulation patterns, returning a calibrated verdict with threat score and cited evidence spans.
- [Verity Suite – Faithful (Faithfulness Checker)](https://www.zero.xyz/c/verity-suite-faithful-faithfulness-checker-9c22ec6b/llms.txt): $0.15/call via x402. Checks whether a candidate summary or translation faithfully represents its source text, returning a calibrated verdict and claim-level reasons.
- [Verity Suite – Quick Redact](https://www.zero.xyz/c/verity-suite-quick-redact-6fff95e3/llms.txt): $0.02/call via x402. Scans a text payload for PII, secrets, and credentials, returning a verdict, severity, findings, and reasons — with an optional Ed25519-signed receipt.
- [Verity Suite Quick Check Guardrail](https://www.zero.xyz/c/verity-suite-quick-check-guardrail-88d93d66/llms.txt): $0.02/call via x402. Evaluates an AI agent's proposed action against an optional policy and context, returning an allow/review/block decision with a risk score and signed receipt.
- [Verity Suite Arbiter – Quick Claim Adjudication](https://www.zero.xyz/c/verity-suite-arbiter-quick-claim-adjudication-88e8c273/llms.txt): $0.03/call via x402. Adjudicates two or more conflicting claims against provided evidence and returns a calibrated verdict with signed receipt
- [Verity Suite Distill Pro](https://www.zero.xyz/c/verity-suite-distill-pro-b9d9eb05/llms.txt): $0.15/call via x402. Extracts structured key-value facts from free-form text, returning only grounded, explicitly stated information with a fidelity signal and calibrated confidence status.
- [Verity Suite Distill](https://www.zero.xyz/c/verity-suite-distill-17782be6/llms.txt): $0.06/call via x402. Extracts structured, grounded facts from a text passage, returning only claims explicitly supported by the source text
- [Verity Suite – Redact (PII & Secret Scanner)](https://www.zero.xyz/c/verity-suite-redact-pii-secret-scanner-e48fa810/llms.txt): $0.06/call via x402. Scans outbound text payloads for PII, secrets, and credentials before they are sent or stored, returning a verdict, severity, findings, and an optional signed receipt.
- [Verity Suite Concord — Policy Compliance Checker](https://www.zero.xyz/c/verity-suite-concord-policy-compliance-checker-f3835eac/llms.txt): $0.06/call via x402. Evaluates a text against a given policy, spec, or contract and returns a calibrated compliance verdict with per-clause reasoning and an optional signed receipt.
- [Verity Suite – Faithful Quick Check](https://www.zero.xyz/c/verity-suite-faithful-quick-check-6245d8f7/llms.txt): $0.02/call via x402. Checks whether a candidate summary or translation is faithful to its source text, returning a calibrated verdict, faithfulness score, and claim-level reasons.
- [Verity Suite Concord Pro — Policy Compliance Checker](https://www.zero.xyz/c/verity-suite-concord-pro-policy-compliance-checker-91721eef/llms.txt): $0.15/call via x402. Evaluates a piece of text against a given policy, spec, or contract and returns a signed compliance verdict with per-clause reasoning
- [Verity Suite Tally Pro — Arithmetic & Financial Figure Sanity-Checker](https://www.zero.xyz/c/verity-suite-tally-pro-arithmetic-financial-figure-sanity-checker-264dcfcb/llms.txt): $0.15/call via x402. Accepts text containing numbers, math, or financial figures and returns a calibrated verdict on whether the arithmetic is consistent, has minor precision issues, contains provable errors, or is unverifiable.
- [Verity Suite Arbiter Pro](https://www.zero.xyz/c/verity-suite-arbiter-pro-582504e4/llms.txt): $0.35/call via x402. Adjudicates mutually conflicting claims against provided evidence, returning a signed verdict with confidence score and cited reasons
- [Verity Suite – Ground Quick (Calibrated Q&A)](https://www.zero.xyz/c/verity-suite-ground-quick-calibrated-q-a-548559aa/llms.txt): $0.03/call via x402. Answers a question with a calibrated confidence score, cited sources, caveats, and an optional Ed25519-signed receipt for auditability
- [Verity Suite Sieve — Content Moderation Screener](https://www.zero.xyz/c/verity-suite-sieve-content-moderation-screener-3900539c/llms.txt): $0.06/call via x402. Screens text content against a moderation policy and returns a pass/fail decision with violation risk score and reasons
- [Verity Suite — Source Reliability Assessment](https://www.zero.xyz/c/verity-suite-source-reliability-assessment-66e5446b/llms.txt): $0.25/call via x402. Assesses the trustworthiness and reliability of a URL, domain, news outlet, organization, or author, returning a scored verdict with reasons, red flags, and an optional signed receipt.
- [Verity Suite Ground — Calibrated Question Answering](https://www.zero.xyz/c/verity-suite-ground-calibrated-question-answering-b5c27a71/llms.txt): $0.25/call via x402. Answers a question with a calibrated confidence score, cited sources, caveats, and an optional Ed25519-signed receipt for auditability
- [Verity Suite Pro Guardrail Check](https://www.zero.xyz/c/verity-suite-pro-guardrail-check-678bb1d4/llms.txt): $0.2/call via x402. Evaluates an AI agent's proposed action against optional policy and context, returning a calibrated allow/review/block decision with risk score and signed receipt
- [Verity Suite Ground Pro — Calibrated Q&A with Signed Receipts](https://www.zero.xyz/c/verity-suite-ground-pro-calibrated-q-a-with-signed-receipts-2dca1521/llms.txt): $0.35/call via x402. Answers a natural-language question with a calibrated confidence score, cited sources, caveats, and an optional Ed25519-signed verifiability receipt
- [Verity Suite – Source Reliability Assessment](https://www.zero.xyz/c/verity-suite-source-reliability-assessment-d0819424/llms.txt): $0.35/call via x402. Assesses the reliability and trustworthiness of a URL, domain, media outlet, organization, or author, returning a calibrated trust verdict, score, reasons, red flags, and an optional Ed25519-signed receipt.
- [Verity Suite Compass Pro](https://www.zero.xyz/c/verity-suite-compass-pro-242fd3e9/llms.txt): $0.15/call via x402. Accepts a set of candidate options, constraints, and optional evidence, then returns a calibrated verdict (recommend, tentative, gather_more_info, or no_viable_option) with a chosen option and concrete reasons.
- [Verity Suite Compass Quick](https://www.zero.xyz/c/verity-suite-compass-quick-ce924e72/llms.txt): $0.02/call via x402. Given a list of candidate options and constraints, returns a calibrated verdict (recommend, tentative, gather_more_info, or no_viable_option) with confidence score and reasons for the best choice.
- [Verity Suite Provenance Pro — AI vs Human Authorship Detector](https://www.zero.xyz/c/verity-suite-provenance-pro-ai-vs-human-authorship-detector-04533d25/llms.txt): $0.15/call via x402. Analyzes a passage of text and returns a calibrated verdict on whether it was written by an AI or a human, with supporting signals, limitations, and an optional signed receipt.
- [Verity Suite – AI Provenance Detection](https://www.zero.xyz/c/verity-suite-ai-provenance-detection-9f85062c/llms.txt): $0.06/call via x402. Analyzes a text passage and returns a calibrated verdict on whether it was likely written by an AI or a human, with grounded reasons and an optional cryptographic receipt.
- [Verity Suite – Quick Source Trust Assessment](https://www.zero.xyz/c/verity-suite-quick-source-trust-assessment-e2b4296b/llms.txt): $0.02/call via x402. Assesses the reliability and trustworthiness of a URL, domain, outlet, organization, or author, returning a calibrated trust verdict, score, and signed receipt.
- [Verity Suite Arbiter](https://www.zero.xyz/c/verity-suite-arbiter-5d9bd30e/llms.txt): $0.25/call via x402. Adjudicates conflicting claims against provided evidence, returning a calibrated verdict with cited reasons and an optional cryptographic receipt
- [Verity Suite – Quick Provenance (AI vs Human Authorship Check)](https://www.zero.xyz/c/verity-suite-quick-provenance-ai-vs-human-authorship-check-e35246d7/llms.txt): $0.02/call via x402. Analyzes a text passage and returns a calibrated verdict on whether it was likely written by AI or a human, with probability score, grounding signals, and an optional Ed25519-signed receipt.

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

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