n3rgy
n3rgy data limited is a United Kingdom smart-energy data platform, registered in England (No. 11712674) and owned by Smart Metering Systems Ltd. It sits between Great Britain's mandated smart-metering infrastructure — the DCC network, SMETS2 home area networks (HANs), and the ESME/GSME electricity and gas meters behind them — and the organisations that want to read from it, letting a business collect consumption, production, and tariff data for a property (addressed by MPAN/MPRN, collectively MPxN) once the occupant has granted consent, without that business having to become a DCC user in its own right. Its API posture is public in documentation and closed in access: a genuinely anonymous MkDocs developer guide and a complete OpenAPI 3.0.1 contract for the Customer Service API V2 are served to anyone, while every operation is x-api-key gated and live keys must be enabled by the n3rgy back office after a business sign-up. Britain mandated the metering infrastructure, not a consumer data right, so nothing here is a Consumer Data Right or Green Button implementation — n3rgy publishes no open grid or market data at all, and the formerly public consumer API is, by the company's own statement, no longer available.
Real signal across most facets with visible, nameable gaps — the contract exists but is thin, or the portal is good while governance and commercial terms are absent.
API Evangelist profiles n3rgy the way a machine reads it — 25 machine-readable artifacts across 1 API, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — n3rgy scores 51.3/100 (developing), with a separate agent-readiness read of 33/100 (agent ready). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance. Every facet and dimension name is a link: it opens that measurement's page on APIs.io, where the rating runs across the whole catalog — the exact checks that feed it, how every profiled provider distributes on it, and who is at the top of it.
Kin Score
How this is scored →scored 2026-09-08 · rubric v0.20.0
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How we profile n3rgy
Each block below is one kind of artifact we hold for n3rgy. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 13
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
Individual APIs this provider publishes, each with its own machine-readable definition.
n3rgy Create Export Profiles API
The Create Export Profiles API from n3rgy — 1 operation(s) for create export profiles.
n3rgy Customer Service API V2 API
The Customer Service API V2 API from n3rgy — 1 operation(s) for customer service api v2.
n3rgy Find Mpxn API
The Find Mpxn API from n3rgy — 2 operation(s) for find mpxn.
n3rgy Get Update Frequencies API
The Get Update Frequencies API from n3rgy — 1 operation(s) for get update frequencies.
n3rgy Internal API
The Internal API from n3rgy — 1 operation(s) for internal.
n3rgy Mpxn API
The Mpxn API from n3rgy — 3 operation(s) for mpxn.
n3rgy Push API
The Push API from n3rgy — 2 operation(s) for push.
n3rgy Read Inventory API
The Read Inventory API from n3rgy — 1 operation(s) for read inventory.
n3rgy Reset All Update Frequencies API
The Reset All Update Frequencies API from n3rgy — 1 operation(s) for reset all update frequencies.
n3rgy Set Defaults API
The Set Defaults API from n3rgy — 1 operation(s) for set defaults.
n3rgy Set Meter Update Frequency API
The Set Meter Update Frequency API from n3rgy — 1 operation(s) for set meter update frequency.
n3rgy Update Now API
The Update Now API from n3rgy — 1 operation(s) for update now.
n3rgy Upload API
The Upload API from n3rgy — 4 operation(s) for upload.
Scroll within the panel for all 13 ·
Rate Limits 1
Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.
Documented rate limits and quota policies.
N3Rgy Rate Limits
RATE LIMITSEvent Specifications 1
Not every API is request/response. AsyncAPI describes the event-driven and streaming side — the webhooks and channels — so the asynchronous half of the interface is documented the same way the synchronous half is.
AsyncAPI definitions for this provider's event-driven and streaming APIs.
Examples 7
Real request and response payloads are what turn a spec from abstract into obvious — and they're one of the twelve things an agent needs to call an API correctly on the first try.
Example request and response payloads for these APIs.
Scroll within the panel for all 7 ·
Security Posture 2
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.
Recommended x-agentic-access execution contracts for AI agents.
Resources
Every other property we hold for n3rgy — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Get Started 4
Portal, sign-up, and the first successful call
Documentation 1
Reference material describing how the API behaves
Agent Surfaces 5
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 2
Pagination, idempotency, versioning, errors, and events
Build 2
SDKs, sample code, and the tooling you integrate with
Access & Security 2
Authentication, authorization, and security posture
Operate 3
Status, limits, changes, and where to get help
Commercial 3
Pricing, plans, and the legal terms of use
Company 2
The organization behind the API
Other 2
Properties that don't map to a standard resource type
← All providers · Data indexed from github.com/api-evangelist/n3rgy · machine-readable index on apis.io
This is an independent, third-party profile of n3rgy, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
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