# Sail Biomedicines

**Canonical:** https://apis.io/providers/laronde/  
**Website:** https://www.sail.bio/  
**APIs profiled:** 0

Sail Biomedicines is a Cambridge, Massachusetts preclinical biotechnology company created in October 2023 by Flagship Pioneering through the merger of Laronde and Senda Biosciences, and it is the company this profile's legacy `laronde` slug refers to. Sail combines Laronde's Endless RNA (eRNA) platform — synthetic circular RNA engineered to be translated persistently inside the body — with Senda's programmable lipid and natural nanoparticle delivery chemistry, and layers generative AI on the combined dataset to design what the company calls fully programmable medicines. Its lead effort is in vivo CAR-T for autoimmune disease: instructing a patient's own T cells to reprogram themselves inside the body rather than extracting, engineering and reinfusing them, an approach Sail markets as "immune reset". In July 2026 Johnson & Johnson committed $785 million up front (including a $465 million equity investment) plus up to $140 million in milestones and took an exclusive option to acquire the company for a further $2.58 billion. Sail sells therapeutics, not software: it publishes no API, no SDK, no machine-readable specification and no developer documentation, and it operates no public source-code organization.

## Kin Score — 9.5 / 100 (minimal)

Scored 2026-08-25 under rubric 0.14.0. Trend: flat (-0.8 from 10.3).

| Facet | Score |
|---|---|
| Discoverability | 50.0 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 2.4 |
| Commercial Clarity | 21.1 |
| Access Clarity | 21.1 |

Regulatory layer — **Health**: 17.5 (matched via tags).

## Agent readiness — 2.5 (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 | documented |
| 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 |

## Security (1)

- **Laronde Domain Security** — TLSv1.3 · DMARC

## Plans (1)

- **Laronde Plans Pricing**

## Tags

Company, Biotechnology, Pharmaceuticals, RNA, Circular RNA, Cell Therapy, CAR-T, Nanoparticles, Drug Discovery, Immunology, Autoimmune Disease, Life Sciences, Artificial Intelligence, Preclinical

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