Asher Biotherapeutics

Asher Biotherapeutics (Asher Bio) is a privately held, clinical-stage biotechnology company founded in 2019 and headquartered at 650 Gateway Blvd. in South San Francisco, California. The company develops cis-targeted immunotherapies — engineered biologics that simultaneously engage an immunomodulatory receptor and a cell-type-specific target on the same immune cell, so a cytokine is only activated on the intended cell population rather than acting indiscriminately across immune subsets. Its lead candidate, etakafusp alfa (AB248), is a cis-targeted IL-2 directed at CD8+ effector T cells and is in Phase 1a/1b clinical development in cancer, alongside earlier-stage programs AB821 and AB359 and a cis-targeted cytokine augmentation program for cell therapies. Asher Bio is a therapeutics developer, not a software or platform company: it publishes no developer program, public API, SDK, or machine-readable interface.

Asher Biotherapeutics is profiled on the APIs.io network. Tagged areas include Company, Biotechnology, Immunotherapy, Oncology, and Therapeutics.

Asher Biotherapeutics’ developer surface includes engineering blog and 9 more developer resources.

🌐 Visit website 📡 Source on GitHub

10.8/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-08-17 · rubric v0.11.0

0 APIs

CompanyBiotechnologyImmunotherapyOncologyTherapeuticsClinical StageLife SciencesCytokines

Kin Score

Kin Score How this is scored →
scored 2026-08-17 · rubric v0.11.0

Composite quality — 10.8/100 · minimal

Contract Quality 0.0 / 21

Developer Ergonomics 0.4 / 17

Commercial Clarity 3.6 / 17

Operational Transparency 0.0 / 11

Governance 0.0 / 10

Discoverability 4.3 / 9

Regulatory Posture 2.6 / 15

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

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/. This rating is computed from github.com/api-evangelist/asher-biotherapeutics: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

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 5

The organization behind the API

Website

Blog

BlogRSS

Careers

About

Other 1

Properties that don't map to a standard resource type

SecondaryMarket

SecondaryMarket

Source (apis.yml)

aid: asher-biotherapeutics
name: Asher Biotherapeutics
description: 'Asher Biotherapeutics (Asher Bio) is a privately held, clinical-stage biotechnology company founded in 2019
  and headquartered at 650 Gateway Blvd. in South San Francisco, California. The company develops cis-targeted immunotherapies
  — engineered biologics that simultaneously engage an immunomodulatory receptor and a cell-type-specific target on the same
  immune cell, so a cytokine is only activated on the intended cell population rather than acting indiscriminately across
  immune subsets. Its lead candidate, etakafusp alfa (AB248), is a cis-targeted IL-2 directed at CD8+ effector T cells and
  is in Phase 1a/1b clinical development in cancer, alongside earlier-stage programs AB821 and AB359 and a cis-targeted cytokine
  augmentation program for cell therapies. Asher Bio is a therapeutics developer, not a software or platform company: it publishes
  no developer program, public API, SDK, or machine-readable interface.'
image: https://asherbio.com/wp-content/uploads/2021/03/home-page-card-Asher-032221.jpg
url: https://raw.githubusercontent.com/api-evangelist/asher-biotherapeutics/refs/heads/main/apis.yml
x-type: company
x-source: harvest:secondary-market
x-tier: stub
x-tier-reason: harvest
specificationVersion: '0.20'
created: '2026-08-06'
modified: '2026-08-06'
tags:
- Company
- Biotechnology
- Immunotherapy
- Oncology
- Therapeutics
- Clinical Stage
- Life Sciences
- Cytokines
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://asherbio.com/
- type: PrivacyPolicy
  url: https://asherbio.com/privacy-policy/
- type: TermsOfService
  url: https://asherbio.com/terms-of-use/
- type: Blog
  url: https://asherbio.com/news/press-releases/
- type: BlogRSS
  url: https://asherbio.com/news/press-releases/feed/
- type: Contact
  url: https://asherbio.com/contact-us/
- type: Careers
  url: https://asherbio.com/careers/
- type: About
  url: https://asherbio.com/about-us/
- type: SecondaryMarket
  url: https://forgeglobal.com/asher-biotherapeutics_stock/
- type: DomainSecurity
  url: security/asher-biotherapeutics-domain-security.yml
x-enrichment:
  date: '2026-08-06'
  status: minimal
  artifacts_added: 2
  pass: local-v1
x-coverage:
  state: none
  reason: not-a-software-company
  detail: Asher Bio is a clinical-stage biologics developer whose product is a drug, not software — its entire WordPress site
    is four sections (platform, pipeline, news, careers) with no developer, API, or docs path; asherbio.com/api, /developers
    and /docs all return the site's 404 page.
  evidence:
  - url: https://asherbio.com/api
    status: 404
  - url: https://asherbio.com/developers
    status: 404
  - url: https://asherbio.com/openapi.json
    status: 404
  - url: https://asherbio.com/.well-known/agent-card.json
    status: 404
  - url: https://asherbio.com/llms.txt
    status: 404
  - url: https://asherbio.com/sitemap.xml
    status: 200
  checked: '2026-08-06'