Envariant website screenshot

Envariant

Envariant is building the control layer for foundation models — an AI interpretability SDK that lets teams inspect, steer, and control model behavior. The SDK exposes a compact set of primitives: detect and causally trace behaviors like hallucinations or invariant violations, reason inductively and steer outputs programmatically, extract human-readable domain principles, and synthesize targeted edge cases — moving verification upstream, directly into the model's latent space, with no bespoke engineering required. Envariant is a Y Combinator (Winter 2026) company based in San Francisco. The SDK is in pre-release beta, so no public API, OpenAPI, or developer documentation is available yet; this profile captures the company identity ahead of a public developer surface.

Envariant is profiled on the APIs.io network. Tagged areas include Company, Artificial Intelligence, Interpretability, Foundation Models, and Machine Learning.

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6.8/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5
0 APIs
CompanyArtificial IntelligenceInterpretabilityFoundation ModelsMachine LearningAI SafetyModel SteeringLLMHallucination DetectionDeveloper ToolsSDK

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 6.8/100 · minimal
Contract Quality 0.0 / 25
Developer Ergonomics 0.0 / 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/envariant: 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.

Envariant Domain Security

TLSv1.3

SECURITY

Resources

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Company 1

The organization behind the API

Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: envariant
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://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/envariant.png
name: Envariant
description: 'Envariant is building the control layer for foundation models — an AI interpretability SDK that lets teams inspect,
  steer, and control model behavior. The SDK exposes a compact set of primitives: detect and causally trace behaviors like
  hallucinations or invariant violations, reason inductively and steer outputs programmatically, extract human-readable domain
  principles, and synthesize targeted edge cases — moving verification upstream, directly into the model''s latent space,
  with no bespoke engineering required. Envariant is a Y Combinator (Winter 2026) company based in San Francisco. The SDK
  is in pre-release beta, so no public API, OpenAPI, or developer documentation is available yet; this profile captures the
  company identity ahead of a public developer surface.'
url: https://raw.githubusercontent.com/api-evangelist/envariant/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- y-combinator
x-tier: stub
x-tier-reason: portfolio-lead
x-batch: W2026
x-location: San Francisco, CA, USA
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Artificial Intelligence
- Interpretability
- Foundation Models
- Machine Learning
- AI Safety
- Model Steering
- LLM
- Hallucination Detection
- Developer Tools
- SDK
common:
- type: DomainSecurity
  url: security/envariant-domain-security.yml
- type: Website
  url: https://envariant.ai/
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence