# Sidewinder Therapeutics

**Canonical:** https://apis.io/providers/sidewinder-therapeutics/  
**Website:** https://sidewinderbio.com/  
**APIs profiled:** 0

Sidewinder Therapeutics is a clinical-stage biopharmaceutical company founded in 2023 and headquartered in San Diego, developing a new generation of precision bispecific antibody-drug conjugates (ADCs) for the treatment of solid tumors. Its engineered biologics bind two complexed targets simultaneously to increase tumor specificity, driving internalization of the antibody-receptor complex and its cytotoxic payload, with the goal of expanding the therapeutic window for hard-to-treat cancers such as colorectal, lung, and head-and-neck squamous cell carcinomas. The company raised an oversubscribed $137M Series B in 2026 (co-led by Frazier Life Sciences and Novartis Venture Fund, with DCVC Bio, OrbiMed, and others) and is advancing its bispecific ADC programs toward clinical development. Sidewinder is a biopharma research company and publishes no public developer or API surface.

## Kin Score — 10.5 / 100 (minimal)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 10.5).

| Facet | Score |
|---|---|
| Discoverability | 50.0 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 7.1 |
| 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 |

## Access

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

## Security (1)

- **Sidewinder Therapeutics Domain Security** — TLSv1.3 · DMARC

## Tags

Company, Biotechnology, Biopharmaceutical, Oncology, Antibody-Drug Conjugates, Cancer Therapeutics, Life Sciences, Drug Development

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