Sail Biomedicines

aid: laronde
name: Sail Biomedicines
description: '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.'
url: https://raw.githubusercontent.com/api-evangelist/laronde/refs/heads/main/apis.yml
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - rate-limits
  - security
  generated: '2026-09-02'
  method: derived
image: https://www.sail.bio/wp-content/uploads/2024/05/sail-logo-primary-dark.svg
x-type: company
x-source: harvest:secondary-market
x-tier: profiled
x-tier-reason: enrichment-pipeline
specificationVersion: '0.23'
created: '2026-08-23'
modified: '2026-08-23'
tags:
- Company
- Biotechnology
- Pharmaceuticals
- RNA
- Circular RNA
- Cell Therapy
- Cart
- Nanoparticles
- Drug Discovery
- Immunology
- Autoimmune Disease
- Life Sciences
- Artificial Intelligence
- Preclinical
tags_raw:
- Company
- Biotechnology
- Pharmaceuticals
- RNA
- Circular RNA
- Cell Therapy
- CAR-T
- Nanoparticles
- Drug Discovery
- Immunology
- Autoimmune Disease
- Life Sciences
- Artificial Intelligence
- Preclinical
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/laronde-domain-security.yml
- type: Website
  url: https://www.sail.bio/
- type: About
  url: https://www.sail.bio/about-us/
- type: News
  url: https://www.sail.bio/news/
- type: Blog
  url: https://www.sail.bio/news/
- type: BlogRSS
  url: https://www.sail.bio/feed/
- type: Careers
  url: https://www.sail.bio/careers/
- type: Contact
  url: https://www.sail.bio/contact/
- type: TermsOfService
  url: https://www.sail.bio/terms-of-service/
- type: PrivacyPolicy
  url: https://www.sail.bio/privacy-policy/
- type: LinkedIn
  url: https://www.linkedin.com/company/sail-biomedicines
- type: Twitter
  url: https://twitter.com/SailBiomeds
- type: Investor
  url: https://www.flagshippioneering.com/companies/sail-biomedicines
- type: SecondaryMarket
  url: https://forgeglobal.com/laronde_stock/
- type: LLMsTxt
  url: llms/laronde-llms.txt
- type: Packages
  url: packages/laronde-packages.yml
- type: Plans
  url: plans/laronde-plans-pricing.yml
- type: RateLimits
  url: rate-limits/laronde-rate-limits.yml
x-enrichment:
  date: '2026-08-23'
  status: minimal
  artifacts_added: 6
  pass: local-v1
x-coverage:
  state: none
  reason: not-a-software-company
  detail: Sail Biomedicines (the company behind this profile's legacy `laronde` slug, formed when Flagship Pioneering merged
    Laronde and Senda Biosciences in October 2023) is a preclinical biopharmaceutical company whose product is an in vivo
    CAR-T drug pipeline, not software — www.sail.bio is a 14-page WordPress marketing site on WP Engine that returns an honest
    404 for every OpenAPI, GraphQL, llms.txt and /.well-known/ path, api./docs./developer./data./mcp. and every other developer
    subdomain are NXDOMAIN, and no package exists on npm, PyPI, RubyGems or crates.io; the site's only machine-readable surface
    is the stock WordPress core REST API at /wp-json/, which is the CMS, not a published API.
  evidence:
  - url: https://www.sail.bio/
    status: 200
  - url: https://www.sail.bio/openapi.json
    status: 404
  - url: https://www.sail.bio/graphql
    status: 404
  - url: https://www.sail.bio/llms.txt
    status: 404
  - url: https://www.sail.bio/.well-known/security.txt
    status: 404
  - url: https://www.sail.bio/.well-known/agent-card.json
    status: 404
  - url: https://www.sail.bio/wp-json/
    status: 200
  - url: https://pypi.org/pypi/sailbio/json
    status: 404
  checked: '2026-08-23'