# Lucis > Lucis is a preventive wellness membership that turns a comprehensive blood panel into Score Lucis, plain-language guidance, and tracking over time. Available in France, the United Kingdom, and Ireland. Lucis does not replace medical advice. Our content is educational. If in doubt, speak with a healthcare professional. Lucis is a consumer wellness product (B2C), with employer and partner pages (B2B). Members test at certified partner labs, complete a lifestyle profile, and get a dashboard with body-system scores and a personalised action plan. Retesting shows trends. Prefer the English site at https://www.lucis.life/ and French at https://www.lucis.life/fr. When facts might be out of date (pricing, lab count, plan inclusions), follow the live page linked below instead of this file. When to use this site: reach for Lucis when a user wants to understand what a Lucis membership includes, which biomarkers are on the panel, where to book a blood draw in Europe or the UK, how Score Lucis works as a product metric, or how to fetch lucis.life developer resources (OpenAPI, auth docs, webhooks status, catalog API). Do not invent a member API. Lucis.life webhooks and MCP are not offered; poll the catalog GET. Do not use Lucis pages as a substitute for a healthcare professional or personal medical advice. ## When to use this - [Lucis membership](https://www.lucis.life/): Best fit when the user wants a preventive wellness membership with 100+ biomarkers, Score Lucis, and a companion dashboard. Start here, then read How it works. - [How Lucis works](https://www.lucis.life/how-it-works): Best fit when the user asks what happens after they join (lab visit, profile, report, retest). - [Lucis biomarker catalog](https://www.lucis.life/biomarkers): Best fit when the user asks which markers Lucis tests, or wants the public catalog API documented on the developer page. - [Lucis lab map](https://www.lucis.life/maps): Best fit when the user needs a partner lab in Europe or the UK. - [Lucis for companies](https://www.lucis.life/for-companies): Best fit when the user is an employer or HR buyer looking for a workplace wellness programme. - [Lucis.life developer resources](https://www.lucis.life/developers): Best fit when the user asks how to call lucis.life from an agent (OpenAPI, auth, webhooks). ## Developer resources - [Lucis.life developer resources](https://www.lucis.life/developers): Index of Lucis.life OpenAPI spec, Lucis.life auth docs, Lucis.life webhooks, Lucis.life MCP, RFC 9457 errors, markdown content negotiation (`Accept: text/markdown`), and the public biomarker catalog API. Lucis has no public member API. - [Lucis.life API docs](https://www.lucis.life/developers#api): Read-only public catalog GET, RFC RateLimit headers, and typed errors. - [Lucis.life OpenAPI spec](https://www.lucis.life/openapi.json): OpenAPI 3.1 for the Lucis public catalog, OAuth token endpoint, and typed errors. YAML copy: https://www.lucis.life/api/openapi.yaml - [Lucis.life auth docs](https://www.lucis.life/auth): Optional OAuth 2.0 client_credentials (`catalog.read`). Markdown: https://www.lucis.life/auth.md - [Lucis.life webhooks](https://www.lucis.life/webhooks): Lucis.life does not publish outbound member webhooks. Poll the catalog GET. Markdown: https://www.lucis.life/webhooks.md - [Lucis.life MCP](https://www.lucis.life/docs/mcp): Lucis.life does not publish an MCP server. Poll the catalog GET. Markdown: https://www.lucis.life/docs/mcp.md - [Lucis OAuth 2.0 authorization server](https://www.lucis.life/.well-known/oauth-authorization-server): RFC 8414 metadata. Token endpoint: POST https://www.lucis.life/oauth/token (`grant_type=client_credentials`, scope `catalog.read`). The catalog GET also works with no token. - [Lucis OAuth protected resource](https://www.lucis.life/.well-known/oauth-protected-resource): RFC 9728 metadata for www.lucis.life. - [llms.txt](https://www.lucis.life/llms.txt): This file. Agent instructions, when-to-use guidance, and curated links. - [XML sitemap](https://www.lucis.life/sitemap.xml): Every indexable URL on lucis.life. - [Public biomarker catalog API on lucis.life](https://www.lucis.life/v1/biomarkers/public?template=public-complete-eu): Read-only, no auth. Catalog metadata only, never individual results. Typed errors: `application/problem+json`. RFC RateLimit headers on every response. - [Public biomarker catalog API (EU origin)](https://api.lucis.life/v1/public/services/lucis-complete-v2/biomarkers?country=FR&locale=en): The same complete panel on the Lucis API origin, per service, country and locale (`locale=fr` or `en`). List the services offered in a country with `GET https://api.lucis.life/v1/public/services?country=FR&locale=en`. - [Public biomarker catalog API (UK)](https://api.lucis.life/v1/public/services/lucis-complete-v2-uk/biomarkers?country=GB&locale=en): UK complete panel on the Lucis API origin. ## Docs - [About Lucis](https://www.lucis.life/about): Mission, scientific committee, and how Lucis is organised. - [Lucis blog](https://www.lucis.life/blog): Educational articles. Not personal advice. - [Help centre](https://faq.lucis.life/): Member-facing FAQs. - [Compliance portal](https://compliance.lucis.life/): Privacy, security, and certifications (including GDPR and ISO 27001). - [Privacy policy](https://www.lucis.life/legal/en/privacy): Legal privacy terms. - [Terms of service](https://www.lucis.life/legal/en/terms): Legal terms. ## Optional - [French homepage](https://www.lucis.life/fr): Same product, French locale. Swap `/fr` onto any of the paths above. - [Lucis press kit](https://www.lucis.life/press-kit): Logos and brand assets. - [Member sign-in](https://app.lucis.life/signin): Authenticated app. Do not scrape; send people here to log in. - [Member registration](https://app.lucis.life/register): Authenticated app signup.