Function Health ChatGPT App

An opt-in app within ChatGPT through which a member can authorize secure access to a limited, high-level summary of their lab results, with the ability to revoke access at any time. Surfaced through the ChatGPT app ecosystem; Function does not document a standalone public API for it.

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this
  • find_apisBrowse and filter every API in the catalog.
  • get_api_artifactsOne API's artifacts, grouped by type.
  • get_openapiThe primary OpenAPI for this API.
  • find_similar_apisAPIs that look like this one.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools

Call it yourself

curl for this page
This API
curl "https://apis.io/api/v1/apis/function-health-chatgpt-app"
All apis
curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no email required.

A second provider on the same verified email joins the account you already have.

OpenAPI Specification

function-health-openapi.yml Raw ↑
openapi: 3.0.1
info:
  title: Function Health API
  description: >-
    Function Health is a consumer longevity and preventive-health membership.
    As of this catalog Function Health does not publish a public, partner, or
    developer API. Member lab data is accessed only through the authenticated
    member dashboard (my.functionhealth.com), a manual PDF export, in-product
    Connected Apps for member-authorized wearable sync, and an opt-in ChatGPT
    app that shares a high-level summary of results. This OpenAPI document is
    intentionally pathless: no programmatic HTTP endpoints are documented by
    the provider, so none are asserted here. It exists as a placeholder so the
    catalog remains consistent and can be reconciled if Function Health
    publishes an API in the future.
  termsOfService: https://www.functionhealth.com/legal
  contact:
    name: Function Health
    url: https://www.functionhealth.com
  version: '0.0'
servers:
  - url: https://www.functionhealth.com
    description: Function Health marketing and member sign-in site. No documented API base path.
paths: {}
components:
  schemas: {}