Belharra Therapeutics

Belharra Therapeutics is a privately held, next-generation chemoproteomics company headquartered at 3985 Sorrento Valley Boulevard, Suite C, San Diego, California, that is building small molecule therapeutics against targets the industry has long considered undruggable. Its Searchlight platform is an unbiased chemoproteomics screening system designed to illuminate novel, previously invisible binding pockets on high-value proteins across the proteome — the company states it can identify small molecule binders for any binding site, on any protein, in any conformational state, in any cell type, and reported having identified more than four thousand drug-like pocket probes by January 2024. The company was incubated and supported by Versant Ventures out of foundational chemoproteomics research at The Scripps Research Institute, with co-founders including Christopher G. Parker and Benjamin Cravatt of Scripps Research and Stuart Schreiber of the Broad Institute of MIT and Harvard. Jeff Jonker was hired as chief executive officer in September 2021, and the company debuted publicly in January 2023 with $130 million in hand — a $50 million Series A led by Versant Ventures plus an $80 million upfront payment from a multi-year Genentech collaboration spanning oncology, immuno-oncology, autoimmune and neurodegenerative disease. In June 2024 it announced a strategic immunology collaboration with Sanofi carrying up to $40 million in upfront and near-term milestone payments, and in January 2025 it appointed Sean Buchanan as chief scientific officer. Belharra runs no developer program and publishes no product API, developer portal, API reference, or SDK. The only machine-readable surface reachable without credentials is the WordPress REST content API behind belharratx.com, catalogued here.

Belharra Therapeutics publishes 8 APIs on the APIs.io network, including Custom Types API, Discovery API, Media API, and 5 more. Tagged areas include Company, Biotechnology, Pharmaceuticals, chemoproteomics, and Drug Discovery.

Belharra Therapeutics’ developer surface includes product news, authentication, and 28 more developer resources.

🌐 Visit website 📡 Source on GitHub

37.2/100 thin ▬ flat Agent 25/100 agent aware saas Full breakdown ↓
scored 2026-09-02 · rubric v0.18.0

AccessOpen

1 APIs

Company Biotechnology Pharmaceuticals chemoproteomics Drug Discovery Small Molecule Therapeutics Proteomics Life Sciences Oncology Immunology content-api

What this lets a business do 1

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Corporate Communications Management

BC-850

custom-types

GET /wp/v2/press-release GET /wp/v2/company-news

Kin Score

Kin Score How this is scored →
scored 2026-09-02 · rubric v0.18.0

Composite quality — 37.2/100 · thin

Contract Quality 11.4 / 21

Developer Ergonomics 2.3 / 17

Access Clarity 9.7 / 17

Operational Transparency 0.3 / 11

Contract Governance 0.5 / 10

Discoverability 5.8 / 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 7 / 7

Rate-Limit Signaling 0 / 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 Surface 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.

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/belharra-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 8

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

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

WellKnown

WellKnown

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

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

PressReleases

PressReleases

Contact

Contact

Commercial 2

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

TermsOfService

TermsOfService

Company 7

The organization behind the API

Website

About

Partners

News

BlogRSS

Careers

LinkedIn

Scroll for all 7

Other 8

Properties that don't map to a standard resource type

CapabilityMap

Overlay

OurStory

Leadership

Platform

Publications

PatientResources

SecondaryMarket

Scroll for all 8

Source (apis.yml)

aid: belharra-therapeutics
name: Belharra Therapeutics
description: Belharra Therapeutics is a privately held, next-generation chemoproteomics company headquartered at 3985 Sorrento
  Valley Boulevard, Suite C, San Diego, California, that is building small molecule therapeutics against targets the industry
  has long considered undruggable. Its Searchlight platform is an unbiased chemoproteomics screening system designed to illuminate
  novel, previously invisible binding pockets on high-value proteins across the proteome — the company states it can identify
  small molecule binders for any binding site, on any protein, in any conformational state, in any cell type, and reported
  having identified more than four thousand drug-like pocket probes by January 2024. The company was incubated and supported
  by Versant Ventures out of foundational chemoproteomics research at The Scripps Research Institute, with co-founders including
  Christopher G. Parker and Benjamin Cravatt of Scripps Research and Stuart Schreiber of the Broad Institute of MIT and Harvard.
  Jeff Jonker was hired as chief executive officer in September 2021, and the company debuted publicly in January 2023 with
  $130 million in hand — a $50 million Series A led by Versant Ventures plus an $80 million upfront payment from a multi-year
  Genentech collaboration spanning oncology, immuno-oncology, autoimmune and neurodegenerative disease. In June 2024 it announced
  a strategic immunology collaboration with Sanofi carrying up to $40 million in upfront and near-term milestone payments,
  and in January 2025 it appointed Sean Buchanan as chief scientific officer. Belharra runs no developer program and publishes
  no product API, developer portal, API reference, or SDK. The only machine-readable surface reachable without credentials
  is the WordPress REST content API behind belharratx.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: low
  source:
  - authentication
  - security
  generated: '2026-09-02'
  method: derived
image: https://belharratx.com/wp-content/uploads/2024/12/belharra-logo.png
url: https://raw.githubusercontent.com/api-evangelist/belharra-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: '2026-08-06'
modified: '2026-08-06'
tags:
- Company
- Biotechnology
- Pharmaceuticals
- chemoproteomics
- Drug Discovery
- Small Molecule Therapeutics
- Proteomics
- Life Sciences
- Oncology
- Immunology
- content-api
tags_raw:
- Company
- biotechnology
- pharmaceuticals
- chemoproteomics
- drug-discovery
- small-molecule-therapeutics
- proteomics
- life-sciences
- oncology
- immunology
- content-api
apis:
- aid: belharra-therapeutics:belharra-therapeutics-custom-types-api
  name: Belharra Therapeutics Custom Types API
  description: Belharra's three custom post types — press-release (4 items), company-news (21 items) and multimedia-file (10
    items).
  humanURL: https://developer.wordpress.org/rest-api/
  baseURL: https://belharratx.com/wp-json
  tags:
  - custom-types
  properties:
  - type: OpenAPI
    url: openapi/belharra-therapeutics-custom-types-api-openapi.yml
  - type: Authentication
    url: authentication/belharra-therapeutics-authentication.yml
  - type: ErrorCatalog
    url: errors/belharra-therapeutics-problem-types.yml
  - type: Conventions
    url: conventions/belharra-therapeutics-conventions.yml
  - type: DataModel
    url: data-model/belharra-therapeutics-data-model.yml
- aid: belharra-therapeutics:belharra-therapeutics-discovery-api
  name: Belharra Therapeutics Discovery API
  description: Route, type, taxonomy, status and author discovery documents.
  humanURL: https://developer.wordpress.org/rest-api/
  baseURL: https://belharratx.com/wp-json
  tags:
  - Discovery
  tags_raw:
  - discovery
  properties:
  - type: OpenAPI
    url: openapi/belharra-therapeutics-discovery-api-openapi.yml
  - type: Authentication
    url: authentication/belharra-therapeutics-authentication.yml
  - type: ErrorCatalog
    url: errors/belharra-therapeutics-problem-types.yml
  - type: Conventions
    url: conventions/belharra-therapeutics-conventions.yml
  - type: DataModel
    url: data-model/belharra-therapeutics-data-model.yml
- aid: belharra-therapeutics:belharra-therapeutics-media-api
  name: Belharra Therapeutics Media API
  description: Media library (430 attachments at harvest time).
  humanURL: https://developer.wordpress.org/rest-api/
  baseURL: https://belharratx.com/wp-json
  tags:
  - Media
  tags_raw:
  - media
  properties:
  - type: OpenAPI
    url: openapi/belharra-therapeutics-media-api-openapi.yml
  - type: Authentication
    url: authentication/belharra-therapeutics-authentication.yml
  - type: ErrorCatalog
    url: errors/belharra-therapeutics-problem-types.yml
  - type: Conventions
    url: conventions/belharra-therapeutics-conventions.yml
  - type: DataModel
    url: data-model/belharra-therapeutics-data-model.yml
- aid: belharra-therapeutics:belharra-therapeutics-oembed-api
  name: Belharra Therapeutics Oembed API
  description: oEmbed 1.0 provider endpoint for belharratx.com URLs.
  humanURL: https://developer.wordpress.org/rest-api/
  baseURL: https://belharratx.com/wp-json
  tags:
  - oEmbed
  tags_raw:
  - oembed
  properties:
  - type: OpenAPI
    url: openapi/belharra-therapeutics-oembed-api-openapi.yml
  - type: Authentication
    url: authentication/belharra-therapeutics-authentication.yml
  - type: ErrorCatalog
    url: errors/belharra-therapeutics-problem-types.yml
  - type: Conventions
    url: conventions/belharra-therapeutics-conventions.yml
  - type: DataModel
    url: data-model/belharra-therapeutics-data-model.yml
- aid: belharra-therapeutics:belharra-therapeutics-pages-api
  name: Belharra Therapeutics Pages API
  description: Corporate pages (29 published at harvest time).
  humanURL: https://developer.wordpress.org/rest-api/
  baseURL: https://belharratx.com/wp-json
  tags:
  - Pages
  tags_raw:
  - pages
  properties:
  - type: OpenAPI
    url: openapi/belharra-therapeutics-pages-api-openapi.yml
  - type: Authentication
    url: authentication/belharra-therapeutics-authentication.yml
  - type: ErrorCatalog
    url: errors/belharra-therapeutics-problem-types.yml
  - type: Conventions
    url: conventions/belharra-therapeutics-conventions.yml
  - type: DataModel
    url: data-model/belharra-therapeutics-data-model.yml
- aid: belharra-therapeutics:belharra-therapeutics-posts-api
  name: Belharra Therapeutics Posts API
  description: Blog/news archive (10 published at harvest time), categorised as Company News or Press Releases.
  humanURL: https://developer.wordpress.org/rest-api/
  baseURL: https://belharratx.com/wp-json
  tags:
  - Posts
  tags_raw:
  - posts
  properties:
  - type: OpenAPI
    url: openapi/belharra-therapeutics-posts-api-openapi.yml
  - type: Authentication
    url: authentication/belharra-therapeutics-authentication.yml
  - type: ErrorCatalog
    url: errors/belharra-therapeutics-problem-types.yml
  - type: Conventions
    url: conventions/belharra-therapeutics-conventions.yml
  - type: DataModel
    url: data-model/belharra-therapeutics-data-model.yml
- aid: belharra-therapeutics:belharra-therapeutics-search-api
  name: Belharra Therapeutics Search API
  description: Cross-content search across published objects (74 searchable records at harvest time).
  humanURL: https://developer.wordpress.org/rest-api/
  baseURL: https://belharratx.com/wp-json
  tags:
  - Search
  tags_raw:
  - search
  properties:
  - type: OpenAPI
    url: openapi/belharra-therapeutics-search-api-openapi.yml
  - type: Authentication
    url: authentication/belharra-therapeutics-authentication.yml
  - type: ErrorCatalog
    url: errors/belharra-therapeutics-problem-types.yml
  - type: Conventions
    url: conventions/belharra-therapeutics-conventions.yml
  - type: DataModel
    url: data-model/belharra-therapeutics-data-model.yml
- aid: belharra-therapeutics:belharra-therapeutics-taxonomy-api
  name: Belharra Therapeutics Taxonomy API
  description: Categories and tags. Two categories are registered (Company News, Press Releases); the post_tag taxonomy is
    registered but empty.
  humanURL: https://developer.wordpress.org/rest-api/
  baseURL: https://belharratx.com/wp-json
  tags:
  - Taxonomy
  tags_raw:
  - taxonomy
  properties:
  - type: OpenAPI
    url: openapi/belharra-therapeutics-taxonomy-api-openapi.yml
  - type: Authentication
    url: authentication/belharra-therapeutics-authentication.yml
  - type: ErrorCatalog
    url: errors/belharra-therapeutics-problem-types.yml
  - type: Conventions
    url: conventions/belharra-therapeutics-conventions.yml
  - type: DataModel
    url: data-model/belharra-therapeutics-data-model.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: CapabilityMap
  url: capabilities/belharra-therapeutics-capability-edges.yml
  name: Belharra Therapeutics Business Capability Map
- type: Overlay
  url: overlays/belharra-therapeutics-content-overlay.yaml
- type: Website
  url: https://belharratx.com/
- type: About
  url: https://belharratx.com/about/
- type: OurStory
  url: https://belharratx.com/about/our-story/
- type: Leadership
  url: https://belharratx.com/about/our-team/leadership/
- type: Platform
  url: https://belharratx.com/our-approach/platform/
- type: Publications
  url: https://belharratx.com/our-approach/publications/
- type: Partners
  url: https://belharratx.com/partners/
- type: News
  url: https://belharratx.com/newsroom/
- type: PressReleases
  url: https://belharratx.com/press-releases/
- type: BlogRSS
  url: https://belharratx.com/feed/
- type: Careers
  url: https://belharratx.com/careers/
- type: Contact
  url: https://belharratx.com/contact/
- type: PatientResources
  url: https://belharratx.com/patients/
- type: PrivacyPolicy
  url: https://belharratx.com/privacy/
- type: TermsOfService
  url: https://belharratx.com/terms/
- type: GitHubOrganization
  url: https://github.com/belharra-tx
- type: LinkedIn
  url: https://www.linkedin.com/company/belharra-therapeutics/
- type: SecondaryMarket
  url: https://www.nasdaqprivatemarket.com/
- type: Authentication
  url: authentication/belharra-therapeutics-authentication.yml
- type: Conventions
  url: conventions/belharra-therapeutics-conventions.yml
- type: Conformance
  url: conformance/belharra-therapeutics-conformance.yml
- type: ErrorCatalog
  url: errors/belharra-therapeutics-problem-types.yml
- type: Lifecycle
  url: lifecycle/belharra-therapeutics-lifecycle.yml
- type: DataModel
  url: data-model/belharra-therapeutics-data-model.yml
- type: WellKnown
  url: well-known/belharra-therapeutics-well-known.yml
- type: DomainSecurity
  url: security/belharra-therapeutics-domain-security.yml
- type: LLMsTxt
  url: llms/belharra-therapeutics-llms.txt
- type: AgentSkill
  url: skills/_index.yml
x-enrichment:
  date: '2026-08-06'
  status: enriched
  artifacts_added: 13
  pass: local-v1
x-coverage:
  state: covered
  reason: machine-readable-contract-harvested
  detail: Belharra Therapeutics runs no developer program and markets no product API, but it does serve a real machine-readable
    contract anonymously — the 198-route WordPress REST index at https://belharratx.com/wp-json/, verified route by route
    and modelled into a 22-operation OpenAPI. The harvest stub's Website pointer was wrong (it pointed at nasdaqprivatemarket.com,
    the harvest source); the real corporate host is belharratx.com. The alias domain belharratherapeutics.com is a parked
    lander that answers 200 on every path including /.well-known/agent-card.json and /openapi.json, and was rejected as a
    soft-404 against a nonsense control path.
  evidence:
  - url: https://belharratx.com/wp-json/
    status: 200
  - url: https://belharratx.com/wp/v2/press-release
    status: 200
  - url: https://belharratx.com/.well-known/agent-card.json
    status: 404
  - url: https://belharratx.com/llms.txt
    status: 404
  - url: https://belharratherapeutics.com/this-path-does-not-exist-xyz123
    status: 200
  checked: '2026-08-06'

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Belharra Therapeutics

What this lets a business do 1

Kin Score

APIs 8

Belharra Therapeutics Custom Types API

Belharra Therapeutics Discovery API

Belharra Therapeutics Media API

Belharra Therapeutics Oembed API

Belharra Therapeutics Pages API

Belharra Therapeutics Posts API

Belharra Therapeutics Search API

Belharra Therapeutics Taxonomy API

Open Collections 9

API Collection

Belharra Therapeutics Content Custom Types API

Belharra Therapeutics Content Discovery API

Belharra Therapeutics Content Media API

Belharra Therapeutics Content Oembed API

Belharra Therapeutics Content Pages API

Belharra Therapeutics Content Posts API

Belharra Therapeutics Content Search API

Belharra Therapeutics Content Taxonomy API

Security Posture 2

Belharra Therapeutics Authentication

Belharra Therapeutics Domain Security

Resources