# Arcus Biosciences

**Canonical:** https://apis.io/providers/arcus-biosciences/  
**Website:** http://arcusbio.com  
**APIs profiled:** 0

Arcus Biosciences is a clinical-stage biopharmaceutical company focused on developing differentiated cancer immunotherapies, headquartered in Hayward, California. Its pipeline pairs multiple novel molecules across intra-tumoral immune pathways, including the HIF-2a inhibitor casdatifan, the CD73 inhibitor quemliclustat, the anti-TIGIT antibody domvanalimab, the anti-PD-1 antibody zimberelimab, and the CD39 inhibitor AB598. Surfaced as a portfolio company of GV and added to the API Evangelist network as a life-sciences company profile. Arcus publishes an agent-facing surface (llms.txt, an AI content map, and an Organization schema) but no public developer API.

## Kin Score — 6.9 / 100 (minimal)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 6.9).

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

Regulatory layer — **Health**: 12.5 (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 |

## Access

Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low).

## Security (1)

- **Arcus Biosciences Domain Security** — TLSv1.3 · DMARC

## Tags

Company, Life Sciences, Biotechnology, Pharmaceuticals, Oncology, Immunotherapy, Cancer, Clinical Trials

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