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 1 API contract indexed on the APIs.io network. 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

16.7/100 emerging ▬ flat Agent 4/100 human only Front door AI 1/6 silent saas Full breakdown ↓
scored 2026-10-09 · rubric v0.23.0

AccessOpen

1 published contract

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

Kin Score

Kin Score How this is scored →
scored 2026-10-09 · rubric v0.23.0

Composite quality — 16.7/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 3.9 / 17

Access Clarity 3.6 / 17

Operational Transparency 0.3 / 11

Contract Governance 0.5 / 10

Discoverability 5.0 / 9

Regulatory Posture 2.9 / 15

Agent readiness — 4/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 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 0 / 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/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 1

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

Belharra Therapeutics Website (WordPress REST)

The public WordPress REST API (wp-json) of the Belharra Therapeutics website at belharratx.com: the route index of the site's content management system, catalogued as one site s...

Open Collections 1

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

API Collection

OPEN COLLECTION

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Belharra Therapeutics Content Overlay

12 actions · update · belharra-therapeutics-content-openapi.yml

GENERATED

Security Posture 2

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

Belharra Therapeutics Authentication

0 schemes

SECURITY

Belharra Therapeutics Domain Security

TLSv1.3 · DMARC

SECURITY

Resources

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:belharratx-com-website-wordpress-rest
  name: Belharra Therapeutics Website (WordPress REST)
  description: 'The public WordPress REST API (wp-json) of the Belharra Therapeutics website at belharratx.com: the route
    index of the site''s content management system, catalogued as one site surface rather than as separate APIs.'
  baseURL: https://belharratx.com/wp-json
  tags:
  - WordPress
  x-surface: platform-generated
  properties:
  - type: Documentation
    url: https://belharratx.com/wp-json
  x-platform: wordpress
  x-platform-surface: rest
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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