Tessera Therapeutics

Tessera Therapeutics is an early-stage life sciences company, founded and backed by Flagship Pioneering, pioneering Gene Writing — a new category of genetic medicine designed to write therapeutic messages into the genome to treat and potentially cure disease at its source. Its Gene Writing platform uses mobile genetic elements delivered via lipid nanoparticles to insert genes and exons, make small insertions and deletions, or change single or multiple DNA base pairs, with applications spanning sickle cell disease, in vivo CAR-T, HIV, and other monogenic, metabolic, autoimmune, and neurodegenerative diseases. This API Evangelist profile tracks the company as a health-tech portfolio lead; Tessera is a therapeutics developer and does not currently publish a public developer or API surface.

Tessera Therapeutics is profiled on the APIs.io network. Tagged areas include Company, Health Tech, Biotechnology, Gene Writing, and Genetic Medicine.

Tessera Therapeutics’ developer surface includes engineering blog, support, and 3 more developer resources.

🌐 Visit website 📡 Source on GitHub
8.8/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5
0 APIs
CompanyHealth TechBiotechnologyGene WritingGenetic MedicineLife SciencesGene TherapyPharmaceuticals

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 8.8/100 · minimal
Contract Quality 0.0 / 25
Developer Ergonomics 1.3 / 20
Commercial Clarity 0.0 / 20
Operational Transparency 0.0 / 13
Governance 0.0 / 12
Discoverability 6.8 / 10
Agent readiness — 0/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/tessera-therapeutics: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Tessera Therapeutics Domain Security

TLSv1.3

SECURITY

Resources

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support
Support

Company 3

The organization behind the API

Website
Website
 Blog
Blog
 Careers
Careers

Source (apis.yml)

apis.yml Raw ↑ 
aid: tessera-therapeutics
name: Tessera Therapeutics
description: Tessera Therapeutics is an early-stage life sciences company, founded and backed by Flagship Pioneering, pioneering
  Gene Writing — a new category of genetic medicine designed to write therapeutic messages into the genome to treat and potentially
  cure disease at its source. Its Gene Writing platform uses mobile genetic elements delivered via lipid nanoparticles to
  insert genes and exons, make small insertions and deletions, or change single or multiple DNA base pairs, with applications
  spanning sickle cell disease, in vivo CAR-T, HIV, and other monogenic, metabolic, autoimmune, and neurodegenerative diseases.
  This API Evangelist profile tracks the company as a health-tech portfolio lead; Tessera is a therapeutics developer and
  does not currently publish a public developer or API surface.
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://www.tesseratherapeutics.com/apple-touch-icon.png
url: https://raw.githubusercontent.com/api-evangelist/tessera-therapeutics/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- softbank-vision-fund
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- Health Tech
- Biotechnology
- Gene Writing
- Genetic Medicine
- Life Sciences
- Gene Therapy
- Pharmaceuticals
x-enrichment:
  date: '2026-07-21'
  status: minimal
  artifacts_added: 1
  pass: local-v1
apis: []
common:
- type: DomainSecurity
  url: security/tessera-therapeutics-domain-security.yml
- type: Website
  url: https://www.tesseratherapeutics.com
- type: Blog
  url: https://www.tesseratherapeutics.com/news
- type: Support
  url: https://www.tesseratherapeutics.com/contact
- type: Careers
  url: https://www.tesseratherapeutics.com/careers
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io