Everything Vagus Lab publishes about vagus nerve stimulation devices is available as structured JSON. No key, no sign-up, no rate limit. The endpoints are static files on a CDN, and they are built from the same data that renders our pages, so they cannot fall out of step with what a reader sees.
Built for AI agents, researchers, and anyone comparing devices who would rather parse JSON than scrape a page.
Endpoints
- /api/public/devices.json: six consumer VNS devices ranked by our editorial score, with prices, badges, pros and cons, and merchant return terms where the merchant publishes them.
- /api/public/articles.json: every published article with its URL, category, and evidence grade.
- /api/public/openapi.json: the OpenAPI 3.1 description of both endpoints.
Discovery follows RFC 9727: the catalog lives at /.well-known/api-catalog.
Article text
Article bodies are not in the index, because every article URL already serves them. Send
Accept: text/markdown and you get clean markdown instead of HTML: frontmatter,
body, and the page's JSON-LD in a fenced block:
curl https://vaguslab.net/articles/best-vns-devices-2026-comparison/ \
-H "Accept: text/markdown"What the scores are
The editorialScore field is a Vagus Lab editorial score out of 10, from the
ten-criterion weighted methodology published on the comparison page. It is
not a consumer rating and not an average of user reviews. We are a research
publication: we analyze manufacturer specifications, published trials, and regulatory
filings. We do not run hands-on product tests.
Affiliate disclosure
Vagus Lab earns affiliate commission on some device purchases. Scores are never adjusted by commission, and the API carries this disclosure in its own payload. Device records link to the merchant's own product page, not through our affiliate redirects. Full policy: Advertising & Affiliate Disclosure.
Using the data
Free to use with attribution to Vagus Lab (vaguslab.net).
Prices and scores change; pricesCheckedAt tells you when each price was last
verified against the vendor. Nothing here is medical advice; see our
Terms.
Something missing?
If a field would make the data more useful to you, tell us. The endpoints are versioned in the OpenAPI description, and we would rather add a field than have you scrape the page for it.