Flare Therapeutics

Flare Therapeutics is a clinical-stage biotechnology company headquartered at 400 Technology Square, Cambridge, Massachusetts, developing small-molecule precision medicines against transcription factors — a target class long considered undruggable. Its platform combines a "switch site" hypothesis with cell-based ligand discovery and chemoproteomics to find binding pockets on transcription factors that control cancer cell states. The company launched publicly in May 2021 with an $82 million Series A led by Third Rock Ventures, and closed an $85 million insider-led Series C on 30 June 2026 led by Third Rock Ventures and Nextech Invest with Pfizer Ventures, Boxer Capital, GordonMD Global Investments, Invus, Casdin Capital, Eli Lilly, Novartis, Agent Capital and Eventide Asset Management participating, appointing Anna Protopapas as Chief Executive Officer at the same time. Its clinical-stage lead FX-909 is a PPARG inverse agonist in advanced urothelial cancer; FX-111 is an androgen-receptor-directed program in prostate cancer that received FDA IND clearance ahead of a clinical start in the third quarter of 2026. Flare also runs a discovery collaboration with Roche on undrugged transcription factor targets in oncology. Flare Therapeutics operates no developer program and publishes no product API, developer portal or API documentation. The only machine-readable surface reachable without credentials is the WordPress REST content API behind www.flaretx.com, catalogued here.

Flare Therapeutics publishes 9 APIs on the APIs.io network, including Comments API, Discovery API, Media API, and 6 more. Tagged areas include Company, Biotechnology, Pharmaceuticals, Oncology, and Precision Medicine.

Flare Therapeutics’ developer surface includes product news, authentication, and 22 more developer resources.

🌐 Visit website 📡 Source on GitHub

29.6/100 thin ▬ flat Agent 25/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessOpen

1 APIs

Company Biotechnology Pharmaceuticals Oncology Precision Medicinetranscription-factorsDrug Discovery Clinical Trials Life Sciences content-api

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 29.6/100 · thin

Contract Quality 10.4 / 21

Developer Ergonomics 2.3 / 17

Access Clarity 3.6 / 17

Operational Transparency 0.3 / 11

Contract Governance 0.5 / 10

Discoverability 6.5 / 9

Regulatory Posture 4.7 / 15

Agent readiness — 25/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 4 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Regulatory Posture applies to this provider. Its tags matched the Health regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics does not apply to this provider. The published contracts declare no write operations, and a read-only API cannot create-or-update. The facet is excluded from this provider's denominator entirely — not scored zero. A reference or data API is not deficient for being unable to upsert.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/flare-therapeutics: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 9

Individual APIs this provider publishes, each with its own machine-readable definition.

Flare Therapeutics Comments API

Comment collection. Registered and reachable, but empty — no post on this deployment carries comments.

Flare Therapeutics Discovery API

Route, type, taxonomy and status discovery documents.

Flare Therapeutics Media API

Media library (419 attachments at harvest time — 400 images, 19 application/* documents, 0 video).

Flare Therapeutics Oembed API

oEmbed 1.0 provider endpoint for www.flaretx.com URLs.

Flare Therapeutics Pages API

Corporate pages (14 published at harvest time) — home, about, science, pipeline, fx-909, fx-111, publications, news, press-releases, join-us, contact, privacy-policy, terms-of-u...

Flare Therapeutics Patterns API

Reusable block patterns and their categories. Registered and anonymously reachable, but both report zero published items.

Flare Therapeutics Posts API

News archive — press releases, news coverage and scientific presentations, 2021-05-13 (Series A launch) to 2026-06-30 (Series C and CEO appointment). 42 published at harvest time.

Flare Therapeutics Search API

Cross-content search across published objects.

Flare Therapeutics Taxonomy API

Categories and tags. Four categories are registered (News 36, Press Release 8, FlareTx 3, Uncategorized 3); the post_tag taxonomy is registered but empty.

Scroll for all 9

Open Collections 1

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Flare Therapeutics Content API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Flare Therapeutics Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Flare Therapeutics Rate Limits

0 limits

RATE LIMITS

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Flare Therapeutics Authentication

0 schemes

SECURITY

Flare Therapeutics Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

AgentSkill

AgentSkill

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conventions

Conformance

ErrorCatalog

Lifecycle

DataModel

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

Contact

Contact

Commercial 2

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

TermsOfService

TermsOfService

Company 6

The organization behind the API

Website

About

News

BlogRSS

Careers

LinkedIn

Other 5

Properties that don't map to a standard resource type

Overlay

Science

Pipeline

Publications

SecondaryMarket

Source (apis.yml)

aid: flare-therapeutics
name: Flare Therapeutics
description: Flare Therapeutics is a clinical-stage biotechnology company headquartered at 400 Technology Square, Cambridge,
  Massachusetts, developing small-molecule precision medicines against transcription factors — a target class long considered
  undruggable. Its platform combines a "switch site" hypothesis with cell-based ligand discovery and chemoproteomics to find
  binding pockets on transcription factors that control cancer cell states. The company launched publicly in May 2021 with
  an $82 million Series A led by Third Rock Ventures, and closed an $85 million insider-led Series C on 30 June 2026 led by
  Third Rock Ventures and Nextech Invest with Pfizer Ventures, Boxer Capital, GordonMD Global Investments, Invus, Casdin Capital,
  Eli Lilly, Novartis, Agent Capital and Eventide Asset Management participating, appointing Anna Protopapas as Chief Executive
  Officer at the same time. Its clinical-stage lead FX-909 is a PPARG inverse agonist in advanced urothelial cancer; FX-111
  is an androgen-receptor-directed program in prostate cancer that received FDA IND clearance ahead of a clinical start in
  the third quarter of 2026. Flare also runs a discovery collaboration with Roche on undrugged transcription factor targets
  in oncology. Flare Therapeutics operates no developer program and publishes no product API, developer portal or API documentation.
  The only machine-readable surface reachable without credentials is the WordPress REST content API behind www.flaretx.com,
  catalogued here.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: open
  trial: false
  try_now: false
  public: true
  label: Open access
  confidence: medium
  source:
  - authentication
  - rate-limits
  - security
  generated: '2026-09-02'
  method: derived
image: https://www.flaretx.com/wp-content/uploads/2021/05/Flare-website-social-card-051221.jpg
url: https://raw.githubusercontent.com/api-evangelist/flare-therapeutics/refs/heads/main/apis.yml
x-type: company
x-source: harvest:secondary-market
x-tier: profiled
x-tier-reason: enriched
specificationVersion: '0.23'
created: '2026-08-12'
modified: '2026-08-12'
tags:
- Company
- Biotechnology
- Pharmaceuticals
- Oncology
- Precision Medicine
- transcription-factors
- Drug Discovery
- Clinical Trials
- Life Sciences
- content-api
tags_raw:
- Company
- biotechnology
- pharmaceuticals
- oncology
- precision-medicine
- transcription-factors
- drug-discovery
- clinical-trials
- life-sciences
- content-api
apis:
- aid: flare-therapeutics:flare-therapeutics-comments-api
  name: Flare Therapeutics Comments API
  description: Comment collection. Registered and reachable, but empty — no post on this deployment carries comments.
  humanURL: https://developer.wordpress.org/rest-api/
  baseURL: https://www.flaretx.com/wp-json
  tags:
  - Comments
  tags_raw:
  - comments
  properties:
  - type: OpenAPI
    url: openapi/flare-therapeutics-comments-api-openapi.yml
  - type: Authentication
    url: authentication/flare-therapeutics-authentication.yml
  - type: ErrorCatalog
    url: errors/flare-therapeutics-problem-types.yml
  - type: Conventions
    url: conventions/flare-therapeutics-conventions.yml
  - type: DataModel
    url: data-model/flare-therapeutics-data-model.yml
  - type: Lifecycle
    url: lifecycle/flare-therapeutics-lifecycle.yml
- aid: flare-therapeutics:flare-therapeutics-discovery-api
  name: Flare Therapeutics Discovery API
  description: Route, type, taxonomy and status discovery documents.
  humanURL: https://developer.wordpress.org/rest-api/
  baseURL: https://www.flaretx.com/wp-json
  tags:
  - Discovery
  tags_raw:
  - discovery
  properties:
  - type: OpenAPI
    url: openapi/flare-therapeutics-discovery-api-openapi.yml
  - type: Authentication
    url: authentication/flare-therapeutics-authentication.yml
  - type: ErrorCatalog
    url: errors/flare-therapeutics-problem-types.yml
  - type: Conventions
    url: conventions/flare-therapeutics-conventions.yml
  - type: DataModel
    url: data-model/flare-therapeutics-data-model.yml
  - type: Lifecycle
    url: lifecycle/flare-therapeutics-lifecycle.yml
- aid: flare-therapeutics:flare-therapeutics-media-api
  name: Flare Therapeutics Media API
  description: Media library (419 attachments at harvest time — 400 images, 19 application/* documents, 0 video).
  humanURL: https://developer.wordpress.org/rest-api/
  baseURL: https://www.flaretx.com/wp-json
  tags:
  - Media
  tags_raw:
  - media
  properties:
  - type: OpenAPI
    url: openapi/flare-therapeutics-media-api-openapi.yml
  - type: Authentication
    url: authentication/flare-therapeutics-authentication.yml
  - type: ErrorCatalog
    url: errors/flare-therapeutics-problem-types.yml
  - type: Conventions
    url: conventions/flare-therapeutics-conventions.yml
  - type: DataModel
    url: data-model/flare-therapeutics-data-model.yml
  - type: Lifecycle
    url: lifecycle/flare-therapeutics-lifecycle.yml
- aid: flare-therapeutics:flare-therapeutics-oembed-api
  name: Flare Therapeutics Oembed API
  description: oEmbed 1.0 provider endpoint for www.flaretx.com URLs.
  humanURL: https://developer.wordpress.org/rest-api/
  baseURL: https://www.flaretx.com/wp-json
  tags:
  - oEmbed
  tags_raw:
  - oembed
  properties:
  - type: OpenAPI
    url: openapi/flare-therapeutics-oembed-api-openapi.yml
  - type: Authentication
    url: authentication/flare-therapeutics-authentication.yml
  - type: ErrorCatalog
    url: errors/flare-therapeutics-problem-types.yml
  - type: Conventions
    url: conventions/flare-therapeutics-conventions.yml
  - type: DataModel
    url: data-model/flare-therapeutics-data-model.yml
  - type: Lifecycle
    url: lifecycle/flare-therapeutics-lifecycle.yml
- aid: flare-therapeutics:flare-therapeutics-pages-api
  name: Flare Therapeutics Pages API
  description: Corporate pages (14 published at harvest time) — home, about, science, pipeline, fx-909, fx-111, publications,
    news, press-releases, join-us, contact, privacy-policy, terms-of-use, flaretx.
  humanURL: https://developer.wordpress.org/rest-api/
  baseURL: https://www.flaretx.com/wp-json
  tags:
  - Pages
  tags_raw:
  - pages
  properties:
  - type: OpenAPI
    url: openapi/flare-therapeutics-pages-api-openapi.yml
  - type: Authentication
    url: authentication/flare-therapeutics-authentication.yml
  - type: ErrorCatalog
    url: errors/flare-therapeutics-problem-types.yml
  - type: Conventions
    url: conventions/flare-therapeutics-conventions.yml
  - type: DataModel
    url: data-model/flare-therapeutics-data-model.yml
  - type: Lifecycle
    url: lifecycle/flare-therapeutics-lifecycle.yml
- aid: flare-therapeutics:flare-therapeutics-patterns-api
  name: Flare Therapeutics Patterns API
  description: Reusable block patterns and their categories. Registered and anonymously reachable, but both report zero published
    items.
  humanURL: https://developer.wordpress.org/rest-api/
  baseURL: https://www.flaretx.com/wp-json
  tags:
  - Patterns
  tags_raw:
  - patterns
  properties:
  - type: OpenAPI
    url: openapi/flare-therapeutics-patterns-api-openapi.yml
  - type: Authentication
    url: authentication/flare-therapeutics-authentication.yml
  - type: ErrorCatalog
    url: errors/flare-therapeutics-problem-types.yml
  - type: Conventions
    url: conventions/flare-therapeutics-conventions.yml
  - type: DataModel
    url: data-model/flare-therapeutics-data-model.yml
  - type: Lifecycle
    url: lifecycle/flare-therapeutics-lifecycle.yml
- aid: flare-therapeutics:flare-therapeutics-posts-api
  name: Flare Therapeutics Posts API
  description: News archive — press releases, news coverage and scientific presentations, 2021-05-13 (Series A launch) to
    2026-06-30 (Series C and CEO appointment). 42 published at harvest time.
  humanURL: https://developer.wordpress.org/rest-api/
  baseURL: https://www.flaretx.com/wp-json
  tags:
  - Posts
  tags_raw:
  - posts
  properties:
  - type: OpenAPI
    url: openapi/flare-therapeutics-posts-api-openapi.yml
  - type: Authentication
    url: authentication/flare-therapeutics-authentication.yml
  - type: ErrorCatalog
    url: errors/flare-therapeutics-problem-types.yml
  - type: Conventions
    url: conventions/flare-therapeutics-conventions.yml
  - type: DataModel
    url: data-model/flare-therapeutics-data-model.yml
  - type: Lifecycle
    url: lifecycle/flare-therapeutics-lifecycle.yml
- aid: flare-therapeutics:flare-therapeutics-search-api
  name: Flare Therapeutics Search API
  description: Cross-content search across published objects.
  humanURL: https://developer.wordpress.org/rest-api/
  baseURL: https://www.flaretx.com/wp-json
  tags:
  - Search
  tags_raw:
  - search
  properties:
  - type: OpenAPI
    url: openapi/flare-therapeutics-search-api-openapi.yml
  - type: Authentication
    url: authentication/flare-therapeutics-authentication.yml
  - type: ErrorCatalog
    url: errors/flare-therapeutics-problem-types.yml
  - type: Conventions
    url: conventions/flare-therapeutics-conventions.yml
  - type: DataModel
    url: data-model/flare-therapeutics-data-model.yml
  - type: Lifecycle
    url: lifecycle/flare-therapeutics-lifecycle.yml
- aid: flare-therapeutics:flare-therapeutics-taxonomy-api
  name: Flare Therapeutics Taxonomy API
  description: Categories and tags. Four categories are registered (News 36, Press Release 8, FlareTx 3, Uncategorized 3);
    the post_tag taxonomy is registered but empty.
  humanURL: https://developer.wordpress.org/rest-api/
  baseURL: https://www.flaretx.com/wp-json
  tags:
  - Taxonomy
  tags_raw:
  - taxonomy
  properties:
  - type: OpenAPI
    url: openapi/flare-therapeutics-taxonomy-api-openapi.yml
  - type: Authentication
    url: authentication/flare-therapeutics-authentication.yml
  - type: ErrorCatalog
    url: errors/flare-therapeutics-problem-types.yml
  - type: Conventions
    url: conventions/flare-therapeutics-conventions.yml
  - type: DataModel
    url: data-model/flare-therapeutics-data-model.yml
  - type: Lifecycle
    url: lifecycle/flare-therapeutics-lifecycle.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Overlay
  url: overlays/flare-therapeutics-content-overlay.yaml
- type: DomainSecurity
  url: security/flare-therapeutics-domain-security.yml
- type: Website
  url: https://www.flaretx.com/
- type: About
  url: https://www.flaretx.com/about/
- type: Science
  url: https://www.flaretx.com/science/
- type: Pipeline
  url: https://www.flaretx.com/pipeline/
- type: Publications
  url: https://www.flaretx.com/publications/
- type: News
  url: https://www.flaretx.com/news/
- type: BlogRSS
  url: https://www.flaretx.com/feed/
- type: Careers
  url: https://www.flaretx.com/join-us/
- type: Contact
  url: https://www.flaretx.com/contact/
- type: PrivacyPolicy
  url: https://www.flaretx.com/privacy-policy/
- type: TermsOfService
  url: https://www.flaretx.com/terms-of-use/
- type: LinkedIn
  url: https://www.linkedin.com/company/flare-therapeutics
- type: GitHubOrganization
  url: https://github.com/FlareTx
- type: SecondaryMarket
  url: https://forgeglobal.com/flare-therapeutics_stock/
- type: Authentication
  url: authentication/flare-therapeutics-authentication.yml
- type: Conventions
  url: conventions/flare-therapeutics-conventions.yml
- type: Conformance
  url: conformance/flare-therapeutics-conformance.yml
- type: ErrorCatalog
  url: errors/flare-therapeutics-problem-types.yml
- type: Lifecycle
  url: lifecycle/flare-therapeutics-lifecycle.yml
- type: DataModel
  url: data-model/flare-therapeutics-data-model.yml
- type: LLMsTxt
  url: llms/flare-therapeutics-llms.txt
- type: AgentSkill
  url: skills/_index.yml
x-enrichment:
  date: '2026-08-12'
  status: enriched
  artifacts_added: 17
  pass: local-v1

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