# Ethyreal Bio **Canonical:** https://apis.io/providers/ethyreal-bio/ **Website:** https://www.ethyrealbio.com/ **APIs profiled:** 12 Ethyreal Bio is a Cambridge, Massachusetts clinical-stage biotechnology company founded in 2024 and headquartered at 700 Technology Square, developing precision therapies for thyroid diseases with high unmet need. It emerged from stealth on 10 June 2026 with $101 million in combined Series A and Series B financing — the Series A co-led by Atlas Venture and Medicxi alongside Nandi Life Sciences and Checkpoint Capital, the Series B led by Avoro Capital. Its lead program ETHY-001 is a monoclonal antibody that blocks autoantibody-mediated activation of the thyroid stimulating hormone receptor (TSHR), the shared pathogenic driver of Graves' disease and thyroid eye disease; it is formulated for subcutaneous administration with half-life extension technology for infrequent dosing, and first-in-human trials were planned for the second half of 2026. Ethyreal Bio publishes no developer program, no product API, no SDKs and no OpenAPI definition of its own. The only machine-readable surface on ethyrealbio.com is the WordPress REST API (wp/v2) that the company website exposes at /wp-json/, which serves its press releases, corporate pages, leadership and board-of-directors profiles, media library, taxonomies and site search as JSON. The OpenAPI documents in this repository were derived mechanically by API Evangelist from that route-discovery descriptor. ## Kin Score — 32.5 / 100 (thin) Scored 2026-08-17 under rubric 0.11.0. Trend: flat (+0.0 from 32.5). | Facet | Score | |---|---| | Discoverability | 81.5 | | Contract Quality | 54.1 | | Governance | 20.8 | | Operational Transparency | 0.0 | | Developer Ergonomics | 21.7 | | Commercial Clarity | 21.1 | Regulatory layer — **Health**: 31.3 (matched via tags). ## Agent readiness — 41.9 (agent-ready) | Dimension | Value | |---|---| | Spec Presence | yes | | Agentic Access | yes | | MCP Server | no | | Auth Clarity | yes | | Idempotency | no | | Error Semantics | no | | OpenAPI Examples | no | | Rate Limit Signal | documented | | Event Surface Described | no | | Agent Skills | yes | | Well Known Catalog | no | | Consent Identity | no | | Agent Card | no | | Dry Run Mode | no | ## APIs (12) - **Ethyreal Bio Comments API** — The Comments API from Ethyreal Bio — 7 operation(s) for comments on the ethyrealbio.com WordPress REST surface. The collection is anonymously readable and currently returns zero... - **Ethyreal Bio Discovery API** — The Discovery API from Ethyreal Bio — 6 operation(s) exposing the WordPress content-type, taxonomy and post-status registries that describe the rest of the ethyrealbio.com conte... - **Ethyreal Bio FAQ API** — The FAQ API from Ethyreal Bio — 14 operation(s) over the Avada theme avada_faq custom post type and its faq_category taxonomy. The routes are registered and anonymously readable... - **Ethyreal Bio Media API** — The Media API from Ethyreal Bio — 8 operation(s) over the ethyrealbio.com media library, which holds 57 items including the leadership and board headshots and the ETHY-001 progr... - **Ethyreal Bio News API** — The News API from Ethyreal Bio — 7 operation(s) over the WordPress posts collection, which carries the company's press releases including the June 2026 emergence-from-stealth an... - **Ethyreal Bio Pages API** — The Pages API from Ethyreal Bio — 7 operation(s) over the corporate pages, including About Us, Our Program, Disease Areas, Patients, Contact, the Expanded Access Policy, the Ter... - **Ethyreal Bio People API** — The People API from Ethyreal Bio — 14 operation(s) over the team_member custom post type and its team_group taxonomy, which publish the company's ten leadership and board-of-dir... - **Ethyreal Bio Portfolio API** — The Portfolio API from Ethyreal Bio — 28 operation(s) over the Avada theme avada_portfolio custom post type and its portfolio_category, portfolio_skills and portfolio_tags taxon... - **Ethyreal Bio Search API** — The Search API from Ethyreal Bio — 1 operation providing site-wide search across the ethyrealbio.com posts, pages, team members and taxonomy terms. - **Ethyreal Bio Settings API** — The Settings API from Ethyreal Bio — 4 operation(s) over the site settings document. The route is authentication-gated; an anonymous GET returns HTTP 401 rest_forbidden. - **Ethyreal Bio Taxonomy API** — The Taxonomy API from Ethyreal Bio — 14 operation(s) over the categories and tags that classify ethyrealbio.com content. Three categories are published, of which News carries th... - **Ethyreal Bio Users API** — The Users API from Ethyreal Bio — 21 operation(s) over WordPress author accounts and their application passwords. The route is authentication-gated; an anonymous GET returns HTT... ## Agentic access (1) - **Ethyreal Bio Agentic Access** — 131 operations · 89 acting · 5 human-in-the-loop ## Security (2) - **Ethyreal Bio Authentication** — http · 1 scheme - **Ethyreal Bio Domain Security** — TLSv1.3 ## Plans (1) - **Ethyreal Bio Plans Pricing** ## Tags Company, Biotechnology, Pharmaceuticals, Life Sciences, Drug Discovery, Clinical Trials, Immunology, Endocrinology, Antibodies, Rare Disease, Health, Content --- Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/ethyreal-bio/). Scores are computed from the provider's own public artifacts under a published rubric.