Wattwatchers

Wattwatchers is an Australian digital energy company (founded 2007, headquartered in Sydney, NSW) that designs and manufactures the Auditor family of DIN-rail electricity monitoring and switching devices, and operates the cloud platform behind them. It sits behind the meter rather than at it — Auditors clamp onto individual circuits and report real-time, circuit-level energy data over 4G or WiFi to Wattwatchers' hosted platform, which resells that data to solar installers, energy retailers, energy services companies, EV and DER programs, schools and research trials. Its API posture is genuinely open at the documentation layer and closed at the data layer — the full REST API v3 (Mercury) reference, a live Swagger UI and a downloadable OpenAPI 3.0 contract are all served anonymously from docs.wattwatchers.com.au, but no key is self-serve: Wattwatchers issues bearer tokens by hand and scopes each one to the specific devices you own or manage, so the API returns your fleet's data and nothing else. Consumer usage data is therefore available through a documented API, while no open grid or market data is published at all. Wattwatchers is not a designated Consumer Data Right energy data holder and does not appear as an accredited data recipient — the CDR energy mandate applies to retailers and AEMO, not to behind-the-meter hardware vendors, so this platform carries no CDR obligation and implements no CDR or Green Button data standard. Wattwatchers entered voluntary administration in October 2025 and was acquired by EPX Limited (ASX:EPX, formerly EP&T Global); the Wattwatchers knowledge base now redirects to support.epx.tech, while the developer documentation, the API host and the OpenAPI contract all remain live and unchanged.

Wattwatchers publishes 4 APIs on the APIs.io network, including Devices API, Long Energy API, Modbus API, and 1 more. Tagged areas include Energy, Australia, Utilities, Electricity, and Smart Metering.

Wattwatchers’ developer surface includes authentication, documentation, changelog, support, API reference, getting-started guide, code examples, and 24 more developer resources.

🌐 Visit website 📡 Source on GitHub

42.0/100 developing ▬ flat Agent 32/100 agent ready Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

1 APIs

Energy Australia Utilities Electricity Smart Metering Energy Data IoT Solar DER Demand Response

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 42.0/100 · developing

Contract Quality 11.3 / 19

Developer Ergonomics 8.5 / 15

Access Clarity 0.0 / 15

Operational Transparency 4.4 / 10

Contract Governance 0.4 / 9

Discoverability 5.1 / 8

Regulatory Posture 6.1 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 32/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Regulatory Posture applies to this provider. Its tags matched the Energy & Utilities regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/wattwatchers: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 4

Individual APIs this provider publishes, each with its own machine-readable definition.

Wattwatchers Devices API

Operations related to devices

Wattwatchers Long Energy API

Operations related to Long Energy (LE)

Wattwatchers Modbus API

Operations related to Modbus

Wattwatchers Short Energy API

Operations related to Short Energy (SE)

Open Collections 1

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Wattwatchers API

OPEN COLLECTION

Rate Limits 1

Documented rate limits and quota policies.

Wattwatchers Rate Limits

2 limits

RATE LIMITS

Examples 1

Example request and response payloads for these APIs.

Wattwatchers Rest Api V3 Examples

7 fields

EXAMPLE

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Wattwatchers Authentication

http · 1 scheme

SECURITY

Wattwatchers Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Wattwatchers Agentic Access

14 operations · 1 acting · 1 human-in-the-loop

14 operations · 1 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

Documentation 3

Reference material describing how the API behaves

Documentation

Documentation

InteractiveDocumentation

InteractiveDocumentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

X-MCPServerCandidate

X-MCPServerCandidate

LLMsTxt

LLMsTxt

AgentSkill

AgentSkill

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

ErrorCatalog

Conventions

Lifecycle

Conformance

DataModel

Build 4

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

SampleCode

Packages

Examples

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Authentication

Authentication

Operate 6

Status, limits, changes, and where to get help

RateLimits

ChangeLog

Support

Roadmap

RateLimits

ChangeLog

Company 2

The organization behind the API

Website

Website

LinkedIn

Other 2

Properties that don't map to a standard resource type

Applications

Applications

Overlay

Overlay

Source (apis.yml)

aid: wattwatchers
url: https://raw.githubusercontent.com/api-evangelist/wattwatchers/refs/heads/main/apis.yml
name: Wattwatchers
kind: company
description: 'Wattwatchers is an Australian digital energy company (founded 2007, headquartered in Sydney, NSW) that designs
  and manufactures the Auditor family of DIN-rail electricity monitoring and switching devices, and operates the cloud platform
  behind them. It sits behind the meter rather than at it — Auditors clamp onto individual circuits and report real-time,
  circuit-level energy data over 4G or WiFi to Wattwatchers'' hosted platform, which resells that data to solar installers,
  energy retailers, energy services companies, EV and DER programs, schools and research trials. Its API posture is genuinely
  open at the documentation layer and closed at the data layer — the full REST API v3 (Mercury) reference, a live Swagger
  UI and a downloadable OpenAPI 3.0 contract are all served anonymously from docs.wattwatchers.com.au, but no key is self-serve:
  Wattwatchers issues bearer tokens by hand and scopes each one to the specific devices you own or manage, so the API returns
  your fleet''s data and nothing else. Consumer usage data is therefore available through a documented API, while no open
  grid or market data is published at all. Wattwatchers is not a designated Consumer Data Right energy data holder and does
  not appear as an accredited data recipient — the CDR energy mandate applies to retailers and AEMO, not to behind-the-meter
  hardware vendors, so this platform carries no CDR obligation and implements no CDR or Green Button data standard. Wattwatchers
  entered voluntary administration in October 2025 and was acquired by EPX Limited (ASX:EPX, formerly EP&T Global); the Wattwatchers
  knowledge base now redirects to support.epx.tech, while the developer documentation, the API host and the OpenAPI contract
  all remain live and unchanged.'
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: true
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - rate-limits
  - security
  generated: '2026-09-03'
  method: derived
image: https://docs.wattwatchers.com.au/assets/images/favicon.png
tags:
- Energy
- Australia
- Utilities
- Electricity
- Smart Metering
- Energy Data
- IoT
- Solar
- DER
- Demand Response
created: '2026-07-27'
modified: '2026-07-27'
specificationVersion: '0.23'
apis:
- aid: wattwatchers:wattwatchers-devices-api
  name: Wattwatchers Devices API
  description: Operations related to devices
  humanURL: https://docs.wattwatchers.com.au/api/v3/index.html
  baseURL: https://api-v3.wattwatchers.com.au
  tags:
  - Devices
  properties:
  - type: OpenAPI
    url: openapi/wattwatchers-devices-api-openapi.yml
  - type: Documentation
    url: https://docs.wattwatchers.com.au/api/v3/index.html
  - type: APIReference
    url: https://docs.wattwatchers.com.au/api/v3/endpoints.html
  - type: InteractiveDocumentation
    url: https://docs.wattwatchers.com.au/api/v3/openapi/index.html
  - type: Authentication
    url: https://docs.wattwatchers.com.au/api/v3/auth.html
  - type: RateLimits
    url: https://docs.wattwatchers.com.au/api/v3/rate-limits.html
  - type: Errors
    url: https://docs.wattwatchers.com.au/api/v3/errors.html
  - type: Conventions
    url: https://docs.wattwatchers.com.au/api/v3/conventions.html
  - type: ChangeLog
    url: https://docs.wattwatchers.com.au/api/v3/release-notes.html
  - type: Documentation
    url: https://docs.wattwatchers.com.au/api/v3/phase-grouping.html
  - type: Documentation
    url: https://docs.wattwatchers.com.au/api/v3/v2-diff.html
  - type: Documentation
    url: https://docs.wattwatchers.com.au/api/tips/concepts.html
  - type: Documentation
    url: https://docs.wattwatchers.com.au/api/tips/polling-data.html
  - type: Documentation
    url: https://docs.wattwatchers.com.au/api/tips/device-catch-up.html
  - type: Documentation
    url: https://docs.wattwatchers.com.au/api/tips/modbus-data.html
  - type: Documentation
    url: https://docs.wattwatchers.com.au/api/tips/units-conversion.html
  - type: Documentation
    url: https://docs.wattwatchers.com.au/api/tips/working-with-timestamps.html
  - type: Documentation
    url: https://docs.wattwatchers.com.au/api/tips/switching-example.html
  - type: SampleCode
    url: https://github.com/wattwatchers/rest-api-notebooks
  - type: Examples
    url: examples/wattwatchers-rest-api-v3-examples.json
  - type: Roadmap
    url: https://docs.wattwatchers.com.au/api/roadmap.html
  - type: GettingStarted
    url: https://service.wattwatchers.com.au/getting-started-with-wattwatchers
- aid: wattwatchers:wattwatchers-long-energy-api
  name: Wattwatchers Long Energy API
  description: Operations related to Long Energy (LE)
  humanURL: https://docs.wattwatchers.com.au/api/v3/index.html
  baseURL: https://api-v3.wattwatchers.com.au
  tags:
  - Long Energy
  properties:
  - type: OpenAPI
    url: openapi/wattwatchers-long-energy-api-openapi.yml
  - type: Documentation
    url: https://docs.wattwatchers.com.au/api/v3/index.html
  - type: APIReference
    url: https://docs.wattwatchers.com.au/api/v3/endpoints.html
  - type: InteractiveDocumentation
    url: https://docs.wattwatchers.com.au/api/v3/openapi/index.html
  - type: Authentication
    url: https://docs.wattwatchers.com.au/api/v3/auth.html
  - type: RateLimits
    url: https://docs.wattwatchers.com.au/api/v3/rate-limits.html
  - type: Errors
    url: https://docs.wattwatchers.com.au/api/v3/errors.html
  - type: Conventions
    url: https://docs.wattwatchers.com.au/api/v3/conventions.html
  - type: ChangeLog
    url: https://docs.wattwatchers.com.au/api/v3/release-notes.html
  - type: Documentation
    url: https://docs.wattwatchers.com.au/api/v3/phase-grouping.html
  - type: Documentation
    url: https://docs.wattwatchers.com.au/api/v3/v2-diff.html
  - type: Documentation
    url: https://docs.wattwatchers.com.au/api/tips/concepts.html
  - type: Documentation
    url: https://docs.wattwatchers.com.au/api/tips/polling-data.html
  - type: Documentation
    url: https://docs.wattwatchers.com.au/api/tips/device-catch-up.html
  - type: Documentation
    url: https://docs.wattwatchers.com.au/api/tips/modbus-data.html
  - type: Documentation
    url: https://docs.wattwatchers.com.au/api/tips/units-conversion.html
  - type: Documentation
    url: https://docs.wattwatchers.com.au/api/tips/working-with-timestamps.html
  - type: Documentation
    url: https://docs.wattwatchers.com.au/api/tips/switching-example.html
  - type: SampleCode
    url: https://github.com/wattwatchers/rest-api-notebooks
  - type: Examples
    url: examples/wattwatchers-rest-api-v3-examples.json
  - type: Roadmap
    url: https://docs.wattwatchers.com.au/api/roadmap.html
  - type: GettingStarted
    url: https://service.wattwatchers.com.au/getting-started-with-wattwatchers
- aid: wattwatchers:wattwatchers-modbus-api
  name: Wattwatchers Modbus API
  description: Operations related to Modbus
  humanURL: https://docs.wattwatchers.com.au/api/v3/index.html
  baseURL: https://api-v3.wattwatchers.com.au
  tags:
  - Modbus
  properties:
  - type: OpenAPI
    url: openapi/wattwatchers-modbus-api-openapi.yml
  - type: Documentation
    url: https://docs.wattwatchers.com.au/api/v3/index.html
  - type: APIReference
    url: https://docs.wattwatchers.com.au/api/v3/endpoints.html
  - type: InteractiveDocumentation
    url: https://docs.wattwatchers.com.au/api/v3/openapi/index.html
  - type: Authentication
    url: https://docs.wattwatchers.com.au/api/v3/auth.html
  - type: RateLimits
    url: https://docs.wattwatchers.com.au/api/v3/rate-limits.html
  - type: Errors
    url: https://docs.wattwatchers.com.au/api/v3/errors.html
  - type: Conventions
    url: https://docs.wattwatchers.com.au/api/v3/conventions.html
  - type: ChangeLog
    url: https://docs.wattwatchers.com.au/api/v3/release-notes.html
  - type: Documentation
    url: https://docs.wattwatchers.com.au/api/v3/phase-grouping.html
  - type: Documentation
    url: https://docs.wattwatchers.com.au/api/v3/v2-diff.html
  - type: Documentation
    url: https://docs.wattwatchers.com.au/api/tips/concepts.html
  - type: Documentation
    url: https://docs.wattwatchers.com.au/api/tips/polling-data.html
  - type: Documentation
    url: https://docs.wattwatchers.com.au/api/tips/device-catch-up.html
  - type: Documentation
    url: https://docs.wattwatchers.com.au/api/tips/modbus-data.html
  - type: Documentation
    url: https://docs.wattwatchers.com.au/api/tips/units-conversion.html
  - type: Documentation
    url: https://docs.wattwatchers.com.au/api/tips/working-with-timestamps.html
  - type: Documentation
    url: https://docs.wattwatchers.com.au/api/tips/switching-example.html
  - type: SampleCode
    url: https://github.com/wattwatchers/rest-api-notebooks
  - type: Examples
    url: examples/wattwatchers-rest-api-v3-examples.json
  - type: Roadmap
    url: https://docs.wattwatchers.com.au/api/roadmap.html
  - type: GettingStarted
    url: https://service.wattwatchers.com.au/getting-started-with-wattwatchers
- aid: wattwatchers:wattwatchers-short-energy-api
  name: Wattwatchers Short Energy API
  description: Operations related to Short Energy (SE)
  humanURL: https://docs.wattwatchers.com.au/api/v3/index.html
  baseURL: https://api-v3.wattwatchers.com.au
  tags:
  - Short Energy
  properties:
  - type: OpenAPI
    url: openapi/wattwatchers-short-energy-api-openapi.yml
  - type: Documentation
    url: https://docs.wattwatchers.com.au/api/v3/index.html
  - type: APIReference
    url: https://docs.wattwatchers.com.au/api/v3/endpoints.html
  - type: InteractiveDocumentation
    url: https://docs.wattwatchers.com.au/api/v3/openapi/index.html
  - type: Authentication
    url: https://docs.wattwatchers.com.au/api/v3/auth.html
  - type: RateLimits
    url: https://docs.wattwatchers.com.au/api/v3/rate-limits.html
  - type: Errors
    url: https://docs.wattwatchers.com.au/api/v3/errors.html
  - type: Conventions
    url: https://docs.wattwatchers.com.au/api/v3/conventions.html
  - type: ChangeLog
    url: https://docs.wattwatchers.com.au/api/v3/release-notes.html
  - type: Documentation
    url: https://docs.wattwatchers.com.au/api/v3/phase-grouping.html
  - type: Documentation
    url: https://docs.wattwatchers.com.au/api/v3/v2-diff.html
  - type: Documentation
    url: https://docs.wattwatchers.com.au/api/tips/concepts.html
  - type: Documentation
    url: https://docs.wattwatchers.com.au/api/tips/polling-data.html
  - type: Documentation
    url: https://docs.wattwatchers.com.au/api/tips/device-catch-up.html
  - type: Documentation
    url: https://docs.wattwatchers.com.au/api/tips/modbus-data.html
  - type: Documentation
    url: https://docs.wattwatchers.com.au/api/tips/units-conversion.html
  - type: Documentation
    url: https://docs.wattwatchers.com.au/api/tips/working-with-timestamps.html
  - type: Documentation
    url: https://docs.wattwatchers.com.au/api/tips/switching-example.html
  - type: SampleCode
    url: https://github.com/wattwatchers/rest-api-notebooks
  - type: Examples
    url: examples/wattwatchers-rest-api-v3-examples.json
  - type: Roadmap
    url: https://docs.wattwatchers.com.au/api/roadmap.html
  - type: GettingStarted
    url: https://service.wattwatchers.com.au/getting-started-with-wattwatchers
common:
- type: AgenticAccess
  url: agentic-access/wattwatchers-agentic-access.yml
- type: DomainSecurity
  url: security/wattwatchers-domain-security.yml
- type: Authentication
  url: authentication/wattwatchers-authentication.yml
- type: Website
  url: https://wattwatchers.com.au/
- type: Documentation
  url: https://docs.wattwatchers.com.au/
- type: InteractiveDocumentation
  url: https://docs.wattwatchers.com.au/api/v3/openapi/index.html
- type: Authentication
  url: https://docs.wattwatchers.com.au/api/v3/auth.html
- type: RateLimits
  url: https://docs.wattwatchers.com.au/api/v3/rate-limits.html
- type: ChangeLog
  url: https://docs.wattwatchers.com.au/api/v3/release-notes.html
- type: GitHubOrganization
  url: https://github.com/wattwatchers
- type: SampleCode
  url: https://github.com/wattwatchers/rest-api-notebooks
- type: LinkedIn
  url: https://www.linkedin.com/company/wattwatchers-digital-energy
- type: Support
  url: https://service.wattwatchers.com.au/
- type: Applications
  url: https://docs.wattwatchers.com.au/apps.html
- type: DeveloperPortal
  url: https://docs.wattwatchers.com.au/
- type: APIReference
  url: https://docs.wattwatchers.com.au/api/v3/endpoints.html
- type: GettingStarted
  url: https://service.wattwatchers.com.au/getting-started-with-wattwatchers
- type: Roadmap
  url: https://docs.wattwatchers.com.au/api/roadmap.html
- type: Packages
  url: packages/wattwatchers-packages.yml
- type: ErrorCatalog
  url: errors/wattwatchers-error-codes.yml
- type: Conventions
  url: conventions/wattwatchers-conventions.yml
- type: RateLimits
  url: rate-limits/wattwatchers-rate-limits.yml
- type: Lifecycle
  url: lifecycle/wattwatchers-lifecycle.yml
- type: ChangeLog
  url: changelog/wattwatchers-changelog.yml
- type: Conformance
  url: conformance/wattwatchers-conformance.yml
- type: DataModel
  url: data-model/wattwatchers-data-model.yml
- type: X-MCPServerCandidate
  url: mcp/wattwatchers-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- type: LLMsTxt
  url: llms/wattwatchers-llms.txt
- type: AgentSkill
  url: skills/_index.yml
- type: Examples
  url: examples/wattwatchers-rest-api-v3-examples.json
- type: Overlay
  url: overlays/wattwatchers-rest-api-v3-overlay.yaml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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