openapi: 3.1.0 info: title: GLP Chart public data API version: 1.0.0 summary: Verified US GLP-1 prices, the monthly fair cash price by drug and dose, payer coverage and the GLP-1 Cash Price Index. description: | Five pre-rendered JSON files, served from a CDN. There is no runtime, no key and no account: the site is a static export and these files are written into it at build time, once per deploy. Prices are checked every Monday against each program's own published pricing. Every figure is a total maintenance cost, everything included: medication, membership, labs and shipping. None of them is an entry price, an intro price or a prepay price. Every response carries `checked`, the Monday its numbers were last verified. Quote that date, not `generated_at`. Per-field documentation lives in the JSON Schema each response points at through its own `$schema` property, and those schemas are served from this same directory. The schemas are the contract. This document describes the endpoints that serve them. GLP Chart is a comparison site. We set the chart order and every score. Nothing here is medical advice and none of it is a guarantee of coverage. contact: name: GLP Chart email: hello@glpchart.com url: https://glpchart.com/ license: name: CC BY 4.0 url: https://creativecommons.org/licenses/by/4.0/ termsOfService: https://glpchart.com/terms/ externalDocs: description: How to use these files, and the MCP server built on them url: https://glpchart.com/mcp/ servers: - url: https://glpchart.com description: Production # No authentication. These are public CDN files: anyone may read them, and the # only obligation is the license's attribution. An empty list says that in the # spec's own vocabulary rather than by omission. security: [] tags: - name: prices description: What a GLP-1 costs, by program and by state. - name: coverage description: Whether an insurer covers a GLP-1. - name: index description: The monthly GLP-1 Cash Price Index. - name: fair-price description: The monthly GLP Chart fair cash price, by drug, form and dose. - name: schema description: The JSON Schema for each dataset. paths: /api/v1/programs.json: get: operationId: getPrograms tags: [prices] summary: Every scored GLP-1 telehealth program, with its verified total monthly cost description: | The GLP Chart comparison chart as data: one record per scored program, ranked, with its total monthly cost, its score breakdown, its lock-in terms, its live first-month deal, its per-drug prices and the states it does not serve. responses: "200": description: The chart. content: application/json: schema: $ref: "./schema/programs.schema.json" "404": description: | No such file. The five datasets above are the whole API; a path that is not one of them was never published. content: application/json: schema: $ref: "#/components/schemas/Error" /api/v1/prices-by-state.json: get: operationId: getPricesByState tags: [prices] summary: Which programs serve each US state, and the cheapest price in each description: | One row per state and DC, holding every priced program available there, cheapest first, plus the lowest figure overall and the lowest cash figure. Availability comes from each program's own excluded-states list. responses: "200": description: Fifty states and DC. content: application/json: schema: $ref: "./schema/prices-by-state.schema.json" "404": description: | No such file. The five datasets above are the whole API; a path that is not one of them was never published. content: application/json: schema: $ref: "#/components/schemas/Error" /api/v1/coverage.json: get: operationId: getCoverage tags: [coverage] summary: Whether a named US insurer covers a named GLP-1 description: | One row per payer and drug pair: the one-paragraph answer, the per-indication criteria the payer publishes, the policy number and the URL of the policy document each answer was read from, with the date it was read. Reference information, not medical or legal advice, and not a guarantee of coverage. Coverage often depends on whether an employer elected the weight-management benefit, and rows where that applies say so. responses: "200": description: Payer coverage rows. content: application/json: schema: $ref: "./schema/coverage.schema.json" "404": description: | No such file. The five datasets above are the whole API; a path that is not one of them was never published. content: application/json: schema: $ref: "#/components/schemas/Error" /api/v1/index.json: get: operationId: getPriceIndex tags: [index] summary: Every release of the GLP-1 Cash Price Index description: | Releases newest first. Each carries its headline metrics, the month series behind them, the method version that produced them and the citation string to reproduce verbatim. responses: "200": description: The index releases. content: application/json: schema: $ref: "./schema/index.schema.json" "404": description: | No such file. The five datasets above are the whole API; a path that is not one of them was never published. content: application/json: schema: $ref: "#/components/schemas/Error" /api/v1/fair-price.json: get: operationId: getFairPrice tags: [fair-price] summary: The fair cash price of every GLP-1, by drug, form and dose description: | One row per drug, form and dose (the Wegovy pill and pen, Ozempic, Zepbound vials and pens, Mounjaro, Foundayo, and compounded semaglutide and compounded tirzepatide in rows of their own). For each row: the fair price, which is the median of the verified month-to-month cash totals across the sellers counted, rounded to the nearest dollar; the lowest and highest totals with their sellers; the seller count; and the change from the previous reading on a matched set of sellers. A total is the drug plus every recurring fee, on the seller's shortest plan billed month to month, read from the seller's GLP Chart record with a dated receipt. Prepaid and committed terms and intro prices are never counted; the ones a seller publishes are listed in `other_prices`. With fewer than three sellers a row publishes no fair price, low or high (`status` is `too_few_sellers` or `no_sellers`) and lists its sellers. Published once a month with the GLP-1 Cash Price Index. A published month never changes except by a numbered revision. Quote the figure with the row's condition, the `checked` date and a link to `url`. responses: "200": description: The newest fair-price release and the list of every release. content: application/json: schema: $ref: "./schema/fair-price.schema.json" "404": description: | No such file. The five datasets above are the whole API; a path that is not one of them was never published. content: application/json: schema: $ref: "#/components/schemas/Error" /api/v1/schema/{dataset}.schema.json: get: operationId: getSchema tags: [schema] summary: The JSON Schema for one dataset description: | The per-field documentation for a dataset, as JSON Schema draft 2020-12. Each response above names its own schema in its `$schema` property. parameters: - name: dataset in: path required: true description: Which dataset's schema to fetch. schema: type: string enum: [programs, prices-by-state, coverage, index, fair-price] responses: "200": description: A JSON Schema document. content: application/json: schema: type: object description: A JSON Schema draft 2020-12 document. "404": description: No such dataset. content: application/json: schema: $ref: "#/components/schemas/Error" components: schemas: Error: type: object description: What the CDN returns for a path that was never published. properties: error: type: string description: A short sentence naming what was not found.