For researchers and newsrooms

The RFL corpus,
at the API layer.

Query our extracted claims, source credibility scores, and verdict history. Embed live credibility states in your own publications. Audit our methodology end to end.

Request API access Read the docs

What you can do

One corpus. Four interfaces.

Claims API

Query the extracted-claim corpus by topic, source, time window, or verdict state. JSON over HTTPS. Streaming subscriptions available.

Credibility scores

Lookup or stream source credibility scores by domain or publication ID. Topic-conditional weights included.

Embeds

Drop-in widgets for newsrooms: claim cards, verdict pills, credibility rings. Updates live as evidence changes.

Methodology access

Full documentation, weights, replication scripts, and a sandbox to score your own corpus against our models.

A look at the API

Stable, versioned, JSON.

Every claim, every source, every verdict revision is queryable. Pagination is cursor-based. Rate limits scale with your tier.

Bearer-token auth, per-key scopes
Webhook subscriptions for verdict transitions
Idempotent reads, signed payloads
Full audit log of methodology changes

GET /v1/claims/CLM-8e3a 200 OK

{
  "id": "CLM-8e3a",
  "text": "The European Climate Law requires a
           45% renewable energy share by 2030.",
  "verdict": "supported",
  "score": 0.86,
  "evidence": {
    "support":    19,
    "contradict": 2,
    "context":    3
  },
  "origin": "reuters.com",
  "captured_at": "2026-04-19T14:08:22Z",
  "updated_at": "2026-05-14T09:11:04Z"
}

Pricing

Researchers free. Operators billed.

For non-commercial research

Academic

Free

Full read access
50,000 calls / month
Methodology sandbox
Citation requirement

Apply

For working journalists

Newsroom

$1,200 / mo

Read + embed widgets
500,000 calls / month
Verdict webhooks
Editorial support

Start trial

For products embedding RFL

Platform

Custom rate limits
Streaming + bulk export
Dedicated SLAs
Co-branded embeds

Talk to sales

The RFL corpus, at the API layer.