# CircuitLab

**Canonical:** https://apis.io/providers/circuitlab/  
**Website:** https://www.circuitlab.com/  
**APIs profiled:** 0

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.

## Kin Score — 14.4 / 100 (emerging)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 14.4).

| Facet | Score |
|---|---|
| Discoverability | 50.0 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 16.7 |
| Commercial Clarity | 31.6 |
| Access Clarity | 31.6 |

Regulatory layer — **Education & Research**: 25.9 (matched via tags).

## Agent readiness — 0.0 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low).

## Security (1)

- **Circuitlab Domain Security** — TLSv1.2

## Tags

Company, Electronics, Circuit Simulation, Schematic Capture, EDA, Simulation, Engineering, Education

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/circuitlab/). Scores are computed from the provider's own public artifacts under a published rubric.