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Full detail: Where this data comes from
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.
Areas: Energy · Home Energy · Electrification · Smart Panel · Electrical Panel · Home Automation · Solar · Energy Storage · EV Charging · Grid · Islanding · Backup Power
Everything profiled for SPAN is published on APIs.io rather than in this repository. Start at the provider page — apis.io/providers/span-io/ — or go straight to one of the APIs or properties below.
- 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…
- 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.
Each property below is a page on APIs.io carrying the machine-readable artifact and what it says.
Event-driven and webhook contracts.
Individual events and webhooks the provider emits.
- ebus/5/{serial}/circuits/{circuitId}/power
- ebus/5/{serial}/circuits/{circuitId}/relay-state
- ebus/5/{serial}/circuits/{circuitId}/relay-state/set
- ebus/5/{serial}/$description
- ebus/5/{serial}/panel/grid
- ebus/5/{serial}/panel/grid/set
- ebus/5/{serial}/panel/islanding-state
- ebus/5/{serial}/panel/meter
- ebus/5/{serial}/panel/power
- ebus/5/{serial}/$state
- ebus/5/{serial}/storage/soe
Which operations an agent can call, which act, and which need a human in the loop.
The data models the API reads and writes.
Linked-data contexts for the provider's vocabulary.
The provider's domain terms, defined.
Postman and Open Collection request collections.
- Span Auth API
- Span Auth Circuits API
- Span Auth Islanding State API
- Span Auth Panel API
- Span Auth Spaces API
- Span Auth Status API
- Span Auth Storage API
- Span Auth Wifi API
- Span
Spectral rulesets for the provider's contracts.
Authentication, trust centre, and vulnerability disclosure.
Published plans, tiers and prices.
Published request limits.
What the API costs to run, by operation.
Links to the company's own pages. This repository publishes no copy of their specifications — the canonical document is theirs and lives at the URLs below.
Kin Score 38.7 — thin · rubric 0.24.0 · scored 2026-10-17
| Facet | Score |
|---|---|
| Discoverability | 57.1 |
| Contract quality | 56.9 |
| Contract governance | 13.6 |
| Operational transparency | 18.4 |
| Developer ergonomics | 52.4 |
| Access clarity | 18.4 |
Agent readiness 24.7 — agent-aware
| Agent-readiness dimension | Result |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived (partial credit) |
| Reversibility Documented | — |
| MCP Server | — |
| Auth Clarity | bearer (partial credit) |
| Idempotency | — |
| Error Semantics | verified |
| OpenAPI Examples | — |
| Rate Limit Signal | derived (partial credit) |
| Event Surface Described | derived (partial credit) |
| Agent Skills | — |
| Well Known Catalog | — |
| Consent Identity | — |
| Agent Card | — |
| Dry Run Mode | — |
| Delegated Identity | — |
| Protected Resource Metadata | — |
| Dynamic Client Registration | — |
| Agentic Commerce | — |
Regulatory alignment 22.1 — Energy & Utilities
The rubric is published at github.com/api-evangelist/kin-score. The per-check breakdown behind these numbers — which checks were earned, partial or missed — along with score history and how this provider compares to its peers, is available at apis.io/providers/span-io/.
API Evangelist profiles a company's public API surface the way a developer would find it: the website, developer portal and documentation, the specifications it publishes, its public repositories, and its pricing, status and changelog pages. From that it derives the properties above — contracts split per API, workflows, schemas, collections, governance rules, plans and rate limits — and scores them against the published Kin Score rubric.
The artifacts are published on APIs.io, not in this repository. This repository is the public record for SPAN: the place to say something is wrong, missing or out of date, and to ask for a re-score or a removal.
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