# lenz-io

**Canonical:** https://apis.io/providers/lenz-io/  
**Website:** https://lenz.io/  
**APIs profiled:** 1

Lenz provides an audit‑grade AI fact‑checking API that verifies factual claims in AI‑generated or human‑written text against independent sources. It offers a multi‑model verification pipeline, reviewer panels, and detailed source citations to ensure trustworthy outputs. The service includes a free trial, tiered pricing, and integrations with major AI models like Claude and ChatGPT, targeting enterprises needing reliable AI content validation.

## Kin Score — 61.5 / 100 (strong)

Scored 2026-10-31 under rubric 0.25.0.

| Facet | Score |
|---|---|
| Discoverability | 57.1 |
| Contract Quality | 61.5 |
| Contract Governance | 79.1 |
| Operational Transparency | 32.1 |
| Developer Ergonomics | 61.2 |
| Access Clarity | 60.0 |

Regulatory layer — **Horizontal (data, software, accessibility, platform)**: 31.8 (matched via fallback).

## Agent readiness — 48.8 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | unknown |
| Reversibility Documented | no |
| MCP Server | documented |
| Auth Clarity | bearer |
| Idempotency | no |
| Error Semantics | verified |
| OpenAPI Examples | partial |
| Rate Limit Signal | documented |
| Event Surface Described | unknown |
| Agent Skills | unknown |
| Well Known Catalog | yes |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |
| Pagination Ratio | paginated |
| Operation Distinctiveness | distinct |

## APIs (11)

- **lenz-io Account API** — Your credit balance, the price list, and rate-limit usage.
- **lenz-io Ask API** — Ask follow-up questions grounded on an existing verification.
- **lenz-io Assess API** — Fast panel verdict on a claim, with the pages the reviewers looked at. Sync, typically 10-25s; allow 45s for the response.
- **lenz-io Citecheck API** — Check whether each cited source says what a draft attributes to it: from a draft with its links, or from statement-source pairs. Async; 1 credit per checked citation, and a sour...
- **lenz-io Discovery API** — Machine-readable index of the API root.
- **lenz-io Extract API** — Pull verifiable claims out of any text. Costs no credits; fair-use cap 1,000/account/day.
- **lenz-io Lenz — AI Fact Checking API** — The Lenz — AI Fact Checking API API from lenz-io — 0 operation(s) for lenz — ai fact checking api.
- **lenz-io Library API** — Browse the public catalog of verifications. No API key required.
- **lenz-io Review API** — The whole recipe in one call: find the claims in a draft, quick-check each, deep-check the ones that look wrong or uncertain, and get the issues back with suggested rewrites. As...
- **lenz-io Verifications API** — List, fetch, delete, and toggle visibility on stored verifications.
- **lenz-io Verify API** — The full investigation, with verified citations. Async, ~90s. Submit one claim or a batch, poll status, and resolve a needs_input interrupt with select.

## Agentic access (1)

- **Lenz Io Agentic Access** — 24 operations · 13 acting · 1 human-in-the-loop

## Security (2)

- **Lenz Io Authentication** — 1 scheme
- **Lenz Io Domain Security** — TLSv1.3 · DMARC

## Plans (1)

- **Lenz Io Plans Pricing**

## Tags

AI, Fact-Checking, Enterprise, API, Audit

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/lenz-io/). Scores are computed from the provider's own public artifacts under a published rubric.