Evidence Engine · beta
Check a draft for evidence before you publish it.
The Evidence Engine scores content against an E-E-A-T policy, fills the gaps with proof from your evidence library, and publishes a signed receipt of what was checked.
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How it works
Draft in. Checked, sourced, and signed out.
Validation is free and makes no model call. The steps that do are part of Pro.
- 01 Free
Validate
Score a draft against an E-E-A-T policy. Rule-based, no model call. You get a 0–100 score and a list of what is missing.
- 02 Pro
Gap-fill
Close evidence gaps with material from your evidence library, while keeping your voice and format.
- 03 Pro
Adversarial review
A second model from a different family attacks the draft. The attack log is kept, and the draft is revised against it.
- 04 Verifiable
Signed receipt
Publish a receipt that binds the content, the policy, and the review log to a point in time, with a public verification page.
The receipt
A record of the check, not a badge.
Each published receipt has its own page on the trust center. Anyone with the link can confirm the receipt is intact and see what was reviewed, without logging in.
- What was checked
- The receipt carries a hash of the exact content. Change a word and the hash no longer matches.
- Against which policy, and when
- The policy version and the publication time are part of the signed payload.
- That it was challenged
- Hashes of the adversarial review log, the approved plan, and the gap-fill run are bound in when those steps ran.
What a receipt is not
- –It is Stackbilder's attestation of what its engine checked, not independent certification.
- –It does not prove the claims in your content are true.
- –It does not promise any search ranking or AI citation outcome.
Your evidence library
Gap-fill works from evidence you can point to.
You store the material once. When a draft is missing a case study or a source, gap-fill matches it against your library, plus any sources from research runs started through the API, merges what fits, then revises the wording around it.
- ✓Case studies
- ✓Customer quotes
- ✓Expert quotes
- ✓Original visuals
- ✓Proprietary data
- ✓First-hand experience
- ✓Technical diagrams
- ✓Research findings
Plans
Included in every Stackbilder plan.
Free
50 validations a month
Score drafts and see every gap.
Pro
100 gap-fill runs a month
Adds a 50-asset library, adversarial review, and Precision mode.
Agency
Unlimited gap-fill runs
Everything in Pro without the monthly gap-fill cap.