# Harbinger Health **Canonical:** https://apis.io/providers/harbinger-health/ **Website:** https://harbinger-health.com/ **APIs profiled:** 37 Harbinger Health is a Cambridge, Massachusetts biotechnology company founded out of Flagship Pioneering's Flagship Labs in 2018 that is building blood-based early cancer detection on the premise that the earliest phases of oncogenesis are marked by the reactivation of core developmental programs. Its proprietary Harbinger HX platform pairs cell-free DNA methylation assay chemistry tuned for low tumour fraction with machine learning operating under biologically informed constraints, and supports cancer signal detection, tumour content estimation and tissue-of-origin inference. RESOLVE, the company's clinical application of that platform, is positioned to generate clarity in the uncertain window between suspicion of cancer and diagnosis, across cancer types and clinical contexts, and is run out of a CLIA-certified and CAP-accredited high-complexity laboratory. The company raised a 100 million dollar round to expand its blood-based detection suite and is led by CEO Ajit Singh with Chief Innovation Officer Tony Shuber, a co-founder of Exact Sciences. Harbinger Health's API posture is minimal and clinical rather than commercial: there is no developer portal, no published documentation, no OpenAPI, no SDKs, no pricing and no self-serve API access, and the developer., docs., api., portal., status. and trust. subdomains do not resolve. What it does publish is unusual for a company with no developer programme - the corporate site serves a live, anonymously readable WordPress REST API (268 routes across 15 namespaces), an RFC 8414 OAuth 2.1 authorization-server metadata document, an RFC 9728 protected-resource document, and a real Model Context Protocol server namespace gated behind an mcp scope, alongside the WordPress Abilities API. That makes Harbinger Health machine-discoverable at the agent layer while none of its clinical, laboratory or diagnostic capability is exposed programmatically to third parties. ## Kin Score — 39.4 / 100 (thin) Scored 2026-08-17 under rubric 0.11.0. Trend: flat (+0.0 from 39.4). | Facet | Score | |---|---| | Discoverability | 81.5 | | Contract Quality | 56.0 | | Governance | 20.8 | | Operational Transparency | 0.0 | | Developer Ergonomics | 27.7 | | Commercial Clarity | 28.9 | Regulatory layer — **Health**: 58.8 (matched via tags). ## Agent readiness — 49.8 (agent-ready) | Dimension | Value | |---|---| | Spec Presence | yes | | Agentic Access | derived | | MCP Server | yes | | Auth Clarity | yes | | Idempotency | no | | Error Semantics | verified | | OpenAPI Examples | partial | | Rate Limit Signal | no | | Event Surface Described | no | | Agent Skills | derived | | Well Known Catalog | no | | Consent Identity | no | | Agent Card | no | | Dry Run Mode | no | ## Access No published developer API; corporate-site content and MCP surfaces only — onboarding: unknown, pricing: free, trial: no (confidence: high). ## APIs (37) - **Harbinger Health MCP Server** — A live Model Context Protocol server namespace published on Harbinger Health's own host at https://harbinger-health.com/wp-json/mcp/, exposing two servers - mcp-oauth-server and... - **Harbinger Health Block Directory API** — WordPress block-directory resource routes. - **Harbinger Health Block Patterns API** — WordPress block-patterns resource routes. - **Harbinger Health Block Renderer API** — WordPress block-renderer resource routes. - **Harbinger Health Block Types API** — WordPress block-types resource routes. - **Harbinger Health Blocks API** — WordPress blocks resource routes. - **Harbinger Health Categories API** — WordPress categories resource routes. - **Harbinger Health Comments API** — WordPress comments resource routes. - **Harbinger Health Events API** — WordPress events resource routes. - **Harbinger Health Font Collections API** — WordPress font-collections resource routes. - **Harbinger Health Font Families API** — WordPress font-families resource routes. - **Harbinger Health Global Styles API** — WordPress global-styles resource routes. - **Harbinger Health Icons API** — WordPress icons resource routes. - **Harbinger Health Index API** — WordPress index resource routes. - **Harbinger Health Media API** — WordPress media resource routes. - **Harbinger Health Menu Items API** — WordPress menu-items resource routes. - **Harbinger Health Menu Locations API** — WordPress menu-locations resource routes. - **Harbinger Health Menus API** — WordPress menus resource routes. - **Harbinger Health Navigation API** — WordPress navigation resource routes. - **Harbinger Health Pages API** — WordPress pages resource routes. - **Harbinger Health Pattern Directory API** — WordPress pattern-directory resource routes. - **Harbinger Health Plugins API** — WordPress plugins resource routes. - **Harbinger Health Posts API** — WordPress posts resource routes. - **Harbinger Health Search API** — WordPress search resource routes. - **Harbinger Health Settings API** — WordPress settings resource routes. - **Harbinger Health Sidebars API** — WordPress sidebars resource routes. - **Harbinger Health Statuses API** — WordPress statuses resource routes. - **Harbinger Health Tags API** — WordPress tags resource routes. - **Harbinger Health Taxonomies API** — WordPress taxonomies resource routes. - **Harbinger Health Template Parts API** — WordPress template-parts resource routes. - **Harbinger Health Templates API** — WordPress templates resource routes. - **Harbinger Health Themes API** — WordPress themes resource routes. - **Harbinger Health Types API** — WordPress types resource routes. - **Harbinger Health Users API** — WordPress users resource routes. - **Harbinger Health Widget Types API** — WordPress widget-types resource routes. - **Harbinger Health Widgets API** — WordPress widgets resource routes. - **Harbinger Health Wp Pattern Category API** — WordPress wp_pattern_category resource routes. ## MCP servers (1) - **harbinger-health-mcp.yml** ## Agentic access (1) - **Harbinger Health Agentic Access** — 236 operations · 130 acting ## Security (2) - **Harbinger Health Authentication** — none/http/oauth2 · 3 schemes - **Harbinger Health Domain Security** — TLSv1.3 · DNSSEC · DMARC ## Tags Health, Healthcare, Biotechnology, Cancer Detection, Diagnostics, Genomics, Artificial Intelligence, Machine Learning, Life Sciences, Clinical Laboratory, Precision Medicine, United States, Company --- Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/harbinger-health/). Scores are computed from the provider's own public artifacts under a published rubric.