Valthos

Valthos is a New York City-based biodefense company developing frontier AI systems that identify biological threats and design medical countermeasures in real time. The company emerged from stealth in October 2025 with $30 million in backing from the OpenAI Startup Fund, Lux Capital, and Founders Fund, with a founding team drawn from Palantir, DeepMind, the Broad Institute, and the Arc Institute. Valthos is building AI-powered biodefense infrastructure to rapidly analyze biological sequences and update medicines at scale for experts in government and the life sciences. The company does not yet publish a public API, developer portal, or open-source surface.

Valthos is profiled on the APIs.io network. Tagged areas include Company, Defense Bio, Biodefense, Biosecurity, and Artificial Intelligence.

Valthos’ developer surface includes engineering blog, product news, and 6 more developer resources.

🌐 Visit website 📡 Source on GitHub

4.5/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-08-20 · rubric v0.12.0

0 APIs 8 Features

CompanyDefense BioBiodefenseBiosecurityArtificial IntelligenceMedical CountermeasuresLife SciencesNational SecurityNew York

Kin Score

Kin Score How this is scored →
scored 2026-08-20 · rubric v0.12.0

Composite quality — 4.5/100 · minimal

Contract Quality 0.0 / 21

Developer Ergonomics 0.4 / 17

Access Clarity 0.0 / 17

Operational Transparency 0.0 / 11

Contract Governance 0.0 / 10

Discoverability 4.9 / 9

Regulatory Posture 1.1 / 15

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

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

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Regulatory Posture applies to this provider. Its tags matched the Health regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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/valthos: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Features 8

Notable capabilities this provider offers.

Sector: Biodefense / defense-bio (AI for biological threat identification and medical countermeasures)

Mission: any threat to human health can be immediately identified and neutralized

Emerged from stealth: October 2025

Funding: $30 million from the OpenAI Startup Fund, Lux Capital, and Founders Fund

Founding team origins: Palantir, DeepMind, Broad Institute, Arc Institute

HQ: New York City, NY (San Francisco secondary for select roles)

Hiring (Jul 2026): software, applied AI, computational biology, forward-deployed, product engineering roles in New York

Public API surface: none published as of 2026-07-21

Scroll for all 8

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Company 6

The organization behind the API

Website

Blog

Careers

Twitter

LinkedIn

News

News

Source (apis.yml)

aid: valthos
name: Valthos
description: Valthos is a New York City-based biodefense company developing frontier AI systems that identify biological threats
  and design medical countermeasures in real time. The company emerged from stealth in October 2025 with $30 million in backing
  from the OpenAI Startup Fund, Lux Capital, and Founders Fund, with a founding team drawn from Palantir, DeepMind, the Broad
  Institute, and the Arc Institute. Valthos is building AI-powered biodefense infrastructure to rapidly analyze biological
  sequences and update medicines at scale for experts in government and the life sciences. The company does not yet publish
  a public API, developer portal, or open-source surface.
url: https://raw.githubusercontent.com/api-evangelist/valthos/refs/heads/main/apis.yml
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://valthos.com/favicon.ico
x-type: company
x-source: vc-portfolio
x-backed-by:
- lux-capital
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- Defense Bio
- Biodefense
- Biosecurity
- Artificial Intelligence
- Medical Countermeasures
- Life Sciences
- National Security
- New York
apis: []
common:
- type: DomainSecurity
  url: security/valthos-domain-security.yml
- type: LLMsTxt
  url: llms/valthos-llms.txt
- type: Website
  url: https://valthos.com
- type: Blog
  url: https://valthos.com/blog/intro
- type: Careers
  url: https://jobs.ashbyhq.com/valthos
- type: Twitter
  url: https://x.com/ValthosTech
- type: LinkedIn
  url: https://www.linkedin.com/company/valthos
- type: News
  url: https://www.bloomberg.com/news/articles/2025-10-24/openai-backs-a-new-venture-trying-to-thwart-ai-bio-attacks
- type: Features
  data:
  - 'Sector: Biodefense / defense-bio (AI for biological threat identification and medical countermeasures)'
  - 'Mission: any threat to human health can be immediately identified and neutralized'
  - 'Emerged from stealth: October 2025'
  - 'Funding: $30 million from the OpenAI Startup Fund, Lux Capital, and Founders Fund'
  - 'Founding team origins: Palantir, DeepMind, Broad Institute, Arc Institute'
  - 'HQ: New York City, NY (San Francisco secondary for select roles)'
  - 'Hiring (Jul 2026): software, applied AI, computational biology, forward-deployed, product engineering roles in New York'
  - 'Public API surface: none published as of 2026-07-21'
  sources:
  - https://valthos.com
  - https://valthos.com/blog/intro
  - https://api.ashbyhq.com/posting-api/job-board/valthos
  updated: '2026-07-21'
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-21'
  status: minimal
  artifacts_added: 3
  pass: local-v1