# Asher Biotherapeutics

**Canonical:** https://apis.io/providers/asher-biotherapeutics/  
**Website:** https://asherbio.com/  
**APIs profiled:** 0

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.

## Kin Score — 9.5 / 100 (minimal)

Scored 2026-08-19 under rubric 0.12.0. Trend: flat (-1.3 from 10.8).

| Facet | Score |
|---|---|
| Discoverability | 50.0 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 2.4 |
| Commercial Clarity | 21.1 |
| Access Clarity | 21.1 |

Regulatory layer — **Health**: 17.5 (matched via tags).

## Agent readiness — 0.0 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Security (1)

- **Asher Biotherapeutics Domain Security** — TLSv1.3 · HSTS · DMARC

## Tags

Company, Biotechnology, Immunotherapy, Oncology, Therapeutics, Clinical Stage, Life Sciences, Cytokines

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/asher-biotherapeutics/). Scores are computed from the provider's own public artifacts under a published rubric.