# OncoC4

**Canonical:** https://apis.io/providers/oncoc4/  
**Website:** https://oncoc4.com/en/  
**APIs profiled:** 0

OncoC4, Inc. is a privately held, late clinical-stage biopharmaceutical company headquartered in Rockville, Maryland, founded in 2020, with subsidiaries in Nanjing, Guangzhou and Beijing, China, and Brisbane, Australia. The company discovers and develops novel biologics for the treatment of cancer, working across immune checkpoints including CTLA-4, CD24, PD-1/VEGF and the Siglec family, with monoclonal antibodies, bispecific antibodies, antibody-drug conjugates and CAR T-cell therapies. Its lead clinical candidate is gotistobart (BNT316/ONC-392), a next-generation anti-CTLA-4 antibody co-developed and commercialized with BioNTech under a strategic collaboration announced in March 2023. OncoC4 publishes no developer program, public API, SDK or developer documentation; its corporate website runs on the Umbraco CMS, which serves a default OpenID Connect / OAuth 2.0 discovery document and JWKS for CMS member authentication.

## Kin Score — 16.0 / 100 (emerging)

Scored 2026-08-17 under rubric 0.11.0. Trend: flat (+0.0 from 16.0).

| Facet | Score |
|---|---|
| Discoverability | 57.4 |
| Contract Quality | 0.0 |
| Governance | 3.1 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 10.9 |
| Commercial Clarity | 10.5 |

Regulatory layer — **Health**: 47.5 (matched via tags).

## Agent readiness — 9.0 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| MCP Server | no |
| Auth Clarity | yes |
| 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 (2)

- **Oncoc4 Authentication** — 1 scheme
- **Oncoc4 Domain Security** — TLSv1.3 · HSTS · DMARC

## Tags

Company, Biotechnology, Biopharmaceutical, Life Sciences, Oncology, Immunotherapy, Clinical Trials, Healthcare, Pharmaceuticals

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/oncoc4/). Scores are computed from the provider's own public artifacts under a published rubric.