# Ratio Therapeutics

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

Ratio Therapeutics Inc. is a clinical-stage pharmaceutical company headquartered at One Design Center Place in Boston, Massachusetts, developing next-generation precision radiopharmaceuticals for solid tumors. Founded in 2022 by Jack Hoppin, Ph.D. and John Babich, Ph.D., the company pairs two proprietary R&D platforms — Trillium, a tunable albumin-binding targeting scaffold that modulates pharmacokinetics, and Macropa, a bifunctional chelator built for the alpha emitter actinium-225 — to improve drug availability, tumor delivery and tumor loading. Its lead program, [Ac-225]RTX-2358, is a FAP-targeted radiotherapeutic in the ATLAS Phase 1/2 trial, alongside a next-generation GRPR program, mono- and bispecific radioligand therapies, and PET imaging assets. Ratio has licensing and collaboration agreements with Novartis, Merck, Bayer and Lantheus, isotope supply agreements with Nusano, TerraPower Isotopes and PanTera, and manufacturing partnerships with PharmaLogic and Eckert & Ziegler. It closed a $70 million Series C in July 2026, bringing total capital raised past $240 million. Ratio is a therapeutics developer rather than a software vendor: it publishes no developer program, no public API and no machine-readable API contract.

## Kin Score — 5.8 / 100 (minimal)

Scored 2026-09-02 under rubric 0.18.0. Trend: flat (+0.0 from 5.8).

| Facet | Score |
|---|---|
| Discoverability | 57.4 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 2.6 |
| Developer Ergonomics | 7.1 |
| Commercial Clarity | 0.0 |
| Access Clarity | 0.0 |

Regulatory layer — **Health**: 7.5 (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 |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## Access

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

## Security (1)

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

## Tags

Company, Biotechnology, Pharmaceuticals, Life Sciences, Healthcare, Oncology, Radiopharmaceuticals, Drug Discovery, Clinical Trials, Precision Medicine

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