# calc.engineer

**Canonical:** https://apis.io/providers/calc-engineer/  
**Website:** https://calc.engineer/  
**APIs profiled:** 1

Calc.engineer provides a free in-browser SPICE circuit simulator, PCB autorouter, and 89 engineering calculators covering RF, LoRa, solar, PCB and homelab. It offers an MCP-native REST API for AI agents without signup, aiming to empower engineers with accessible simulation tools.

## Kin Score — 19.7 / 100 (emerging)

Scored 2026-11-06 under rubric 0.27.0.

| Facet | Score |
|---|---|
| Discoverability | 57.1 |
| Contract Quality | 43.5 |
| Contract Governance | 22.0 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 5.4 |
| Access Clarity | 0.0 |

Regulatory layer — **Horizontal (data, software, accessibility, platform)**: 10.8 (matched via fallback).

## Agent readiness — 20.2 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | derived |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | derived |
| Well Known Catalog | yes |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |
| Pagination Ratio | no |
| Operation Distinctiveness | distinct |
| MCP Tool Quality | na |

## Access

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

## APIs (9)

- **calc.engineer Auth API** — The auth API from calc.engineer — 2 operation(s) for auth.
- **calc.engineer Catalog API** — The catalog API from calc.engineer — 1 operation(s) for catalog.
- **calc.engineer Docs API** — The docs API from calc.engineer — 1 operation(s) for docs.
- **calc.engineer General API** — The general API from calc.engineer — 23 operation(s) for general.
- **calc.engineer Homelab API** — The homelab API from calc.engineer — 13 operation(s) for homelab.
- **calc.engineer Mesh API** — The mesh API from calc.engineer — 10 operation(s) for mesh.
- **calc.engineer Pcb API** — The pcb API from calc.engineer — 14 operation(s) for pcb.
- **calc.engineer Power API** — The power API from calc.engineer — 15 operation(s) for power.
- **calc.engineer Rf API** — The rf API from calc.engineer — 13 operation(s) for rf.

## Agentic access (1)

- **Calc Engineer Agentic Access** — 181 operations · 90 acting · 13 human-in-the-loop

## Security (1)

- **Calc Engineer Domain Security** — TLSv1.3 · HSTS

## Tags

Company, Engineering, Simulation, Calculator

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