Live Demo · Research Partner Programme

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Evidence-graded answers for Research Partner teams — ~4,000 curated records, semantic search, AI-generated reports. API docs →

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Mock-up · not live
~4,000 Curated records
8 Filterable facets
100/min Free tier
v1 Stable · OpenAPI 3.1
02 · Example queries

Pre-built scenarios

Click any card to pre-fill the search and run it instantly. These cover the main query patterns: semantic search, facet filtering, catalogue stats, and single-record retrieval.

03 · Reading the results

What every element means

Every result card carries four pieces of information. Here's how to read them and why they matter.

🏷
Tier badge (left)
Methodological strength of the study, rated 1–4. Tier 1 is the gold standard.
Tier 1
Meta-analysis / systematic review
Tier 2
RCT or prospective cohort
Tier 3
Observational / cross-sectional
Tier 4
Expert opinion / narrative review
Pulse Score (right)
A 0–100 composite quality metric. Combines evidence tier, sample size, recency, and replication. Higher = stronger, better-replicated evidence.
87
80–100 — highly replicated, recent, top-tier
64
60–79 — solid evidence, some gaps
41
40–59 — emerging or limited replication
📄
Citation line
Author(s) · Journal · Year · DOI — the provenance of the claim. Open navigates to the full record. Cite copies an APA-format reference to your clipboard. Export RIS downloads a .ris file for Mendeley, Zotero, or EndNote.
Filters & what they do
Tier — restricts to one evidence tier.
Study type — values come live from the API's facets endpoint.
Geography — region scope: uk, uk-eu or usa (server-side regex over geography fields).
Score ≥ — client-side threshold hiding weaker records.
Sort — relevance (default for semantic), tier, recency, or title.
Anatomy of a single result card
Tier 1 ① Evidence tier
Regenerative agriculture improves soil organic carbon and crop nutritional quality — meta-analysis of 180 studies ② Claim / title
Smith et al · Nature Food · 2023 · DOI 10.1038/s43016-023-XXXX ③ Citation
Open· · · ④ Actions
87pulse
⑤ Pulse
Score
04 · Live console

The raw API — request, response, headers

Click any example query above to populate this console. Copy the curl command to run the same call from your terminal. Check Headers for rate-limit state — the X-RateLimit-Remaining header tells you how many requests you have left in this minute.

Request

GET /api/v1/evidence

Run an example query above to generate the curl command…
Method
GET — read-only, no body
Auth
None required · X-API-Key for higher tiers
Format
application/json
CORS
* open — call directly from the browser
Response

Live data from the catalogue

Run an example query above to see results here.
No request yet.
No request yet.
Like what you see?

Three tiers — from casual to commercial

Anonymous traffic gets 100 req/min per IP. A free Researcher key lifts that to 1,000/min instantly. Commercial use (5,000/min, SLA, redistribution rights) is a quick conversation.