# Mestag Therapeutics

**Canonical:** https://apis.io/providers/mestag-therapeutics/  
**Website:** https://www.mestagtherapeutics.com/  
**APIs profiled:** 0

Mestag Therapeutics is a clinical-stage immunotherapy company based in Cambridge, UK, developing new treatments for cancer and inflammatory diseases by targeting the understudied role of activated fibroblasts in immune responses. Its lead cancer program, MST-0312, is a targeted LTBR-agonist bispecific antibody designed to drive tertiary lymphoid structure (TLS) formation in solid tumors and is now in the Phase I STARLYS trial. Its inflammatory-disease program, M402, uses agonist antibodies against stromal inhibitory receptors for conditions including rheumatoid arthritis, inflammatory bowel disease, and lupus. Backed by GV, Mestag is a privately held biotech and does not currently publish a public API, developer portal, or machine-readable API surface.

## Kin Score — 7.6 / 100 (minimal)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 7.6).

| 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 | 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)

- **Mestag Therapeutics Domain Security** — TLSv1.3 · HSTS · DMARC

## Tags

Company, Life Sciences, Biotechnology, Immunology, Immunotherapy, Oncology, Drug Discovery, Inflammatory Disease, Antibodies, Cambridge UK

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