# Zag Bio

**Canonical:** https://apis.io/providers/zag-bio/  
**Website:** https://zagbio.com/  
**APIs profiled:** 0

Zag Bio is a clinical-stage biotechnology company developing thymus-targeted therapies for autoimmune diseases. The company engineers bifunctional antibodies that deliver self-antigens to antigen-presenting cells in the thymus, harnessing the body's natural process of central immune tolerance so developing immune cells learn to recognize, tolerate, and protect the body's own tissues. Its pipeline includes ZAG-101, a candidate for Type 1 Diabetes. Founded and incubated by Polaris Partners, Zag Bio launched publicly in October 2025 with an $80M Series A. It is tracked in the API Evangelist network as a Lightspeed Venture Partners portfolio company; as a therapeutics developer it publishes no public API or developer platform at this time.

## Kin Score — 9.3 / 100 (minimal)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 9.3).

| 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**: 10.0 (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).

## Tags

Company, Biotechnology, Pharmaceuticals, Autoimmune, Immunology, Therapeutics, Drug Development, Healthcare, Venture Backed

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