# SPAN

**Canonical:** https://apis.io/providers/span-io/  
**Website:** https://www.span.io  
**APIs profiled:** 9

SPAN is a San Francisco-based home energy technology company building smart electrical panels that replace traditional residential breaker boxes with a software-defined, controllable, and metered panel. SPAN Panel provides whole-home real-time power and energy metering, per-circuit monitoring and remote relay control, grid/islanding state management for whole-home backup with solar and energy storage, EV charging coordination via SPAN Drive, and a mobile app for energy management. As of the SPAN Panel firmware r202603 release (Q1 2026), SPAN exposes a public-beta on-premise SPAN API for software integrations between SPAN Panel and other devices on the home Local Area Network. The SPAN API is a real, documented HTTP + MQTT/Homie surface that runs directly on the panel — there is no cloud-hosted developer endpoint. The REST surface provides authentication, system status, Wi-Fi setup, panel state, per-circuit control, panel grid relay, energy storage state-of-energy, and emergency reconnect operations. The publish/subscribe surface uses the Electrification Bus (eBus) framework and Homie Convention over MQTT for streaming real-time panel state, per-circuit telemetry, and control of relays. SPAN API is licensed for personal, non-commercial use under MIT-0 for docs and example code; commercial / fleet use requires the separately licensed SPAN Fleet Manager.

## Kin Score — 49.4 / 100 (developing)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 49.4).

| Facet | Score |
|---|---|
| Discoverability | 64.8 |
| Contract Quality | 63.4 |
| Governance | 13.6 |
| Contract Governance | 13.6 |
| Operational Transparency | 18.4 |
| Developer Ergonomics | 52.4 |
| Commercial Clarity | 50.0 |
| Access Clarity | 50.0 |

Regulatory layer — **Energy & Utilities**: 36.5 (matched via tags).

## Agent readiness — 37.2 (agent-ready)

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

## Access

Self-serve signup — onboarding: self-serve, pricing: unknown, trial: no (confidence: high).

## APIs (9)

- **SPAN eBus MQTT API** — Publish/subscribe streaming API hosted on SPAN Panel using the Electrification Bus (eBus) integration framework and the Homie Convention. SPAN Panel hosts an MQTT broker accessi...
- **SPAN Auth API** — The Auth API from SPAN — 3 operation(s) for auth.
- **SPAN Circuits API** — The Circuits API from SPAN — 2 operation(s) for circuits.
- **SPAN Islanding State API** — The Islanding State API from SPAN — 1 operation(s) for islanding state.
- **SPAN Panel API** — The Panel API from SPAN — 5 operation(s) for panel.
- **SPAN Spaces API** — The Spaces API from SPAN — 2 operation(s) for spaces.
- **SPAN Status API** — The Status API from SPAN — 1 operation(s) for status.
- **SPAN Storage API** — The Storage API from SPAN — 2 operation(s) for storage.
- **SPAN Wifi API** — The Wifi API from SPAN — 2 operation(s) for wifi.

## Agentic access (1)

- **Span Io Agentic Access** — 24 operations · 9 acting · 1 human-in-the-loop

## Security (3)

- **Span Io Authentication** — http · 1 scheme
- **Span Io Domain Security** — TLSv1.3 · DMARC
- **Span Io Vulnerability Disclosure** — disclosure policy published

## Plans (1)

- **Span Io Plans Pricing**

## Tags

Energy, Home Energy, Electrification, Smart Panel, Electrical Panel, Home Automation, Solar, Energy Storage, EV Charging, Grid, Islanding, Backup Power, Demand Response, IoT, MQTT, Homie, Electrification Bus, On-Premise

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