aid: circuitlab
name: CircuitLab
description: >-
  CircuitLab, Inc. is an in-browser schematic capture and circuit simulation
  platform that lets engineers, students, educators, and hobbyists design and
  analyze analog and digital electronics systems before building a physical
  prototype. Running entirely in the browser with no installation, it offers
  schematic capture, mixed-signal SPICE-style simulation (DC, AC, transient,
  frequency-domain), custom device models and symbols, expression-based
  parameters, and shareable, exportable documentation. CircuitLab also publishes
  an electronics curriculum (CircuitLab Academy, the Ultimate Electronics
  textbook), community forums, and an electronics Q&A. It was surfaced as a
  portfolio company of a16z and Y Combinator. At the time of this enrichment
  pass CircuitLab publishes no public developer API, SDKs, or machine-readable
  API description, so this profile captures its public web identity only.
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.circuitlab.com/assets/images/og_logo.png
url: https://raw.githubusercontent.com/api-evangelist/circuitlab/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- a16z
- y-combinator
x-tier: stub
x-tier-reason: portfolio-lead
x-enrichment-note: >-
  No public API surface found (no OpenAPI/AsyncAPI/GraphQL, no /.well-known/*,
  no llms.txt, no SDKs/CLI). Enriched to web-identity + domain-security only.
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Electronics
- Circuit Simulation
- Schematic Capture
- EDA
- Simulation
- Engineering
- Education
apis: []
common:
- type: DomainSecurity
  url: security/circuitlab-domain-security.yml
- type: Website
  url: https://www.circuitlab.com/
- type: Documentation
  url: https://www.circuitlab.com/docs/
- type: Support
  url: https://www.circuitlab.com/forums/
- type: Blog
  url: https://www.circuitlab.com/blog/
- type: Pricing
  url: https://www.circuitlab.com/accounts/upgrade/
- type: TermsOfService
  url: https://www.circuitlab.com/legal/
- type: PrivacyPolicy
  url: https://www.circuitlab.com/legal/
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