# Filter Verdicts

> Independent verdicts on refrigerator water filter cartridges: for each cartridge, whether its advertised NSF/ANSI certification claims can be found in the certifier's own live registry — checked under the holder, system and replacement-element codes, with sources linked and dated. Facts are free for humans and machines.

## Free machine API (v1, read-only, no key, no payment)

- [Catalog of all published verdicts](https://filterverdicts.com/api/v1/catalog.json)
- [Verdict: everydrop-edr4rxd1](https://filterverdicts.com/api/v1/verdicts/everydrop-edr4rxd1.json) — page: https://filterverdicts.com/filters/everydrop-edr4rxd1/
- [Verdict: ge-xwfe](https://filterverdicts.com/api/v1/verdicts/ge-xwfe.json) — page: https://filterverdicts.com/filters/ge-xwfe/
- [Verdict: samsung-haf-qin](https://filterverdicts.com/api/v1/verdicts/samsung-haf-qin.json) — page: https://filterverdicts.com/filters/samsung-haf-qin/
- [Verdict: lg-lt1000p](https://filterverdicts.com/api/v1/verdicts/lg-lt1000p.json) — page: https://filterverdicts.com/filters/lg-lt1000p/
- [Verdict: mist-edr1rxd1-equivalent](https://filterverdicts.com/api/v1/verdicts/mist-edr1rxd1-equivalent.json) — page: https://filterverdicts.com/filters/mist-edr1rxd1-equivalent/
- [Changes feed: corrections + new verdicts](https://filterverdicts.com/api/v1/changes.json)
- [Developer documentation](https://filterverdicts.com/developers/)

## Schemas

- [catalog-v1 JSON Schema](https://filterverdicts.com/schemas/catalog-v1.schema.json)
- [verdict-v1 JSON Schema](https://filterverdicts.com/schemas/verdict-v1.schema.json)
- [evidence-bundle-v1 JSON Schema (spec only — no endpoint serves it yet)](https://filterverdicts.com/schemas/evidence-bundle-v1.schema.json)

## Evidence statuses (evidence ontology v2)

- live_certifier_listing — the claim was found in the certifier's own live registry listing.
- system_only_record — a certifier record names the certification system, but not this cartridge or replacement element.
- manufacturer_statement — the claim rests on the manufacturer's own document or statement, not a certifier listing.
- third_party_reproduction — the claim rests on a third-party reproduction of a certification document.
- not_located_after_bounded_search — the claim was not found in the certifier's registry after a bounded search resolving holder, system and element identifiers; the query log is published with the verdict.
- source_unavailable — the primary source for the claim could not be retrieved or checked.

## Method and corrections

- [How we check](https://filterverdicts.com/method/) — the repeatable check behind every verdict, and the dated public corrections record.
- [Disclosure](https://filterverdicts.com/disclosure/)
- [About](https://filterverdicts.com/about/)

## Free / paid boundary

All verdict facts, the catalog, per-verdict records and the changes feed are free, permanently. Paid machine access is live on testnet only (payments settle in test USDC on Base Sepolia and have no monetary value), and sells computation and proof artifacts built on completed checks — precomputed evidence bundles with identifier chains, query logs and content hashes — never the basic facts, and never a different conclusion.