Smart DCC website screenshot

Smart DCC

Smart DCC (the Data Communications Company) is the Ofgem-licensed monopoly that operates Britain's national smart metering communications network, connecting electricity and gas smart meters in homes and businesses to energy suppliers, network operators and other authorised users over a single secure wide-area network. It sits in the middle of the United Kingdom energy value chain as shared infrastructure rather than as a retailer or a data marketplace, and it is regulated through the Smart Meter Communication Licence and governed by the Smart Energy Code. Its API posture reflects that position exactly. Britain mandated the infrastructure, not a consumer data right — there is no UK equivalent of the Australian Consumer Data Right for energy, so Smart DCC operates no consumer data-portability API and publishes no Green Button or Consumer Data Standards surface. The real production interface is the DCC User Interface Specification (DUIS), an XML web service reached over a DCC User Gateway Connection, plus the Self-Service Interface; the DUIS specification and its XML schema are published openly as Smart Energy Code subsidiary documents, but the gateway itself is closed to anyone who has not acceded to the Smart Energy Code and passed SMKI and User Entry Process Testing. The only self-serve, machine-readable contract Smart DCC publishes is an OpenAPI for the open-source DCC Boxed DUIS signing and validation tool on GitHub. Network statistics are shown on a public dashboard as a rendered web page with no documented open data API or bulk download, so both the consumer-data and market-data sides are effectively closed while the interface specification itself is open.

Smart DCC publishes 1 API on the APIs.io network: DCC Boxed DUIS Signing Tool API. Tagged areas include Energy, United Kingdom, Utilities, Electricity, and Gas.

Smart DCC’s developer surface includes engineering blog, documentation, CLI, sandbox, changelog, support, pricing, and 33 more developer resources.

🌐 Visit website 📡 Source on GitHub
46.4/100 developing ▬ flat Agent 30/100 agent aware Full breakdown ↓
scored 2026-08-20 · rubric v0.12.0
1 APIs 1 MCP Servers
EnergyUnited KingdomUtilitiesElectricityGasSmart MeteringGridMetering InfrastructureEnergy Data

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-20 · rubric v0.12.0
Composite quality — 46.4/100 · developing
Contract Quality 10.0 / 21
Developer Ergonomics 6.5 / 17
Access Clarity 4.9 / 17
Operational Transparency 5.5 / 11
Contract Governance 3.5 / 10
Discoverability 5.7 / 9
Regulatory Posture 6.9 / 15
Agent readiness — 30/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
Documented Reversibility 0 / 6
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 7 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
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.
The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% 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/. This rating is computed from github.com/api-evangelist/dcc-smart: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 1

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

DCC Boxed DUIS Signing Tool API

An open-source HTTP API published by Smart DCC Limited for signing and validating DUIS (DCC User Interface Specification) XML messages. Two operations — POST /sign adds an XML d...

Open Collections 1

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

DCC Boxed DUIS Signing Tool API

OPEN COLLECTION

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Smart DCC MCP Server

MCP SERVER

JSON Schema 1

Standalone JSON Schema definitions for this provider's data models.

Dcc Smart Dccboxed Keystore

0 properties

JSON SCHEMA

Security Posture 3

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

Dcc Smart Authentication

0 schemes

SECURITY

Dcc Smart Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Dcc Smart Vulnerability Disclosure

Hackerone · contact published

SECURITY

Agentic Access 1

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

Dcc Smart Agentic Access

2 operations · 2 acting

2 operations · 2 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

Onboarding
Onboarding
 Sandbox
Sandbox

Documentation 6

Reference material describing how the API behaves

Documentation
Documentation
 Specification
Specification
 Specification
Specification
 Specification
Specification
 Schema
Schema
 JSONSchema
JSONSchema

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

MCPServer
MCPServer
 AgenticAccess
AgenticAccess
 WellKnown
WellKnown
 LLMsTxt
LLMsTxt

Design & Contract 4

Pagination, idempotency, versioning, errors, and events

Components
Components
 Conformance
Conformance
 Lifecycle
Lifecycle
 Vocabulary
Vocabulary

Build 4

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization
 Packages
Packages
 SDKs
SDKs
 CLI
CLI

Access & Security 4

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Compliance
Compliance
 VulnerabilityDisclosure
VulnerabilityDisclosure
 Security
Security

Operate 7

Status, limits, changes, and where to get help

IssueTracker
IssueTracker
 Contact
Contact
 StatusPage
StatusPage
 ChangeLog
ChangeLog
 ChangeLog
ChangeLog
 Roadmap
Roadmap
 Support
Support

Scroll for all 7

Commercial 3

Pricing, plans, and the legal terms of use

License
License
 PrivacyPolicy
PrivacyPolicy
 Pricing
Pricing

Company 3

The organization behind the API

Website
Website
 About
About
 Blog
Blog

Other 3

Properties that don't map to a standard resource type

Dashboard
Dashboard
 Products
Products
 Regulation
Regulation

Source (apis.yml)

apis.yml Raw ↑ 
aid: dcc-smart
url: https://raw.githubusercontent.com/api-evangelist/dcc-smart/refs/heads/main/apis.yml
name: Smart DCC
kind: company
description: Smart DCC (the Data Communications Company) is the Ofgem-licensed monopoly that operates Britain's national smart
  metering communications network, connecting electricity and gas smart meters in homes and businesses to energy suppliers,
  network operators and other authorised users over a single secure wide-area network. It sits in the middle of the United
  Kingdom energy value chain as shared infrastructure rather than as a retailer or a data marketplace, and it is regulated
  through the Smart Meter Communication Licence and governed by the Smart Energy Code. Its API posture reflects that position
  exactly. Britain mandated the infrastructure, not a consumer data right — there is no UK equivalent of the Australian Consumer
  Data Right for energy, so Smart DCC operates no consumer data-portability API and publishes no Green Button or Consumer
  Data Standards surface. The real production interface is the DCC User Interface Specification (DUIS), an XML web service
  reached over a DCC User Gateway Connection, plus the Self-Service Interface; the DUIS specification and its XML schema are
  published openly as Smart Energy Code subsidiary documents, but the gateway itself is closed to anyone who has not acceded
  to the Smart Energy Code and passed SMKI and User Entry Process Testing. The only self-serve, machine-readable contract
  Smart DCC publishes is an OpenAPI for the open-source DCC Boxed DUIS signing and validation tool on GitHub. Network statistics
  are shown on a public dashboard as a rendered web page with no documented open data API or bulk download, so both the consumer-data
  and market-data sides are effectively closed while the interface specification itself is open.
image: https://www.smartdcc.co.uk/assets/images/favicon.ico
tags:
- Energy
- United Kingdom
- Utilities
- Electricity
- Gas
- Smart Metering
- Grid
- Metering Infrastructure
- Energy Data
created: '2026-07-27'
modified: '2026-07-27'
specificationVersion: '0.23'
apis:
- aid: dcc-smart:dcc-boxed-duis-signing-tool-api
  name: DCC Boxed DUIS Signing Tool API
  description: An open-source HTTP API published by Smart DCC Limited for signing and validating DUIS (DCC User Interface
    Specification) XML messages. Two operations — POST /sign adds an XML digital signature to a Base64-encoded unsigned DUIS
    request (with an optional preserveCounter flag), and POST /verify validates the signature on a DUIS response and strips
    it. The tool ships with the ZAZ1 test SMKI certificates used by DCC Boxed and also performs XSD validation. It runs locally
    as a self-hosted server; Smart DCC operates no public hosted instance.
  humanURL: https://github.com/SmartDCCInnovation/dccboxed-signing-tool
  baseURL: http://localhost:8080
  tags:
  - Smart Metering
  - DUIS
  - Signing
  - Validation
  - Testing
  properties:
  - type: OpenAPI
    url: openapi/dcc-boxed-duis-signing-tool-openapi.yml
  - type: Documentation
    url: https://github.com/SmartDCCInnovation/dccboxed-signing-tool
  - type: SourceCode
    url: https://github.com/SmartDCCInnovation/dccboxed-signing-tool
  - type: Specification
    url: https://smartenergycodecompany.co.uk/documents/sec-subsidiary-documents/sec-appendix-ad-dcc-user-interface-specification-duis/
  - type: Overlay
    url: overlays/dcc-smart-dcc-boxed-duis-signing-tool-overlay.yaml
  - type: Authentication
    url: authentication/dcc-smart-authentication.yml
  - type: Conventions
    url: conventions/dcc-smart-conventions.yml
  - type: ErrorCatalog
    url: errors/dcc-smart-problem-types.yml
  - type: DataModel
    url: data-model/dcc-smart-data-model.yml
  - type: AgentSkill
    url: skills/_index.yml
common:
- type: MCPServer
  url: mcp/dcc-smart-mcp.yml
- type: IssueTracker
  url: https://github.com/SmartDCCInnovation/dccboxed-signing-tool/issues
- type: License
  name: GPL-3.0
  url: https://github.com/SmartDCCInnovation/dccboxed-signing-tool/blob/main/LICENSE
- type: AgenticAccess
  url: agentic-access/dcc-smart-agentic-access.yml
- type: DomainSecurity
  url: security/dcc-smart-domain-security.yml
- type: Website
  url: https://www.smartdcc.co.uk/
- type: About
  url: https://www.smartdcc.co.uk/about-dcc/
- type: Contact
  url: https://www.smartdcc.co.uk/contact-us/
- type: Blog
  url: https://www.smartdcc.co.uk/news-events/
- type: GitHubOrganization
  url: https://github.com/SmartDCCInnovation
- type: Documentation
  url: https://www.smartdcc.co.uk/document-centre/
- type: Onboarding
  url: https://www.smartdcc.co.uk/partner-with-the-dcc/
- type: Specification
  url: https://www.smartdcc.co.uk/media/d5kh4khf/dcc-user-interface-specification-v53-18-mar-2025.pdf
- type: Specification
  url: https://smartenergycodecompany.co.uk/documents/sec-subsidiary-documents/sec-appendix-ad-dcc-user-interface-specification-duis/
- type: Specification
  url: https://smartenergycodecompany.co.uk/documents/sec-subsidiary-documents/sec-appendix-ae-dcc-user-interface-code-of-connection/
- type: Schema
  url: https://www.smartdcc.co.uk/media/6490/duis-xml-schema-v51.docx
- type: Dashboard
  url: https://www.smartdcc.co.uk/our-smart-network/network-data-dashboard/
- type: Products
  url: https://www.smartdcc.co.uk/our-smart-network/network-products-services/dcc-boxed/
- type: Regulation
  url: https://smartenergycodecompany.co.uk/the-smart-energy-code/
- type: Packages
  url: packages/dcc-smart-packages.yml
- type: SDKs
  url: packages/dcc-smart-packages.yml
- type: CLI
  url: cli/dcc-smart-cli.yml
- type: Components
  url: components/dcc-smart-components.yml
- type: Sandbox
  url: sandbox/dcc-smart-sandbox.yml
- type: Conformance
  url: conformance/dcc-smart-conformance.yml
- type: Compliance
  url: https://www.smartdcc.co.uk/about-dcc/governance-regulations/governance-reports-policies/
- type: Lifecycle
  url: lifecycle/dcc-smart-lifecycle.yml
- type: StatusPage
  url: https://www.smartdcc.co.uk/our-smart-network/network-data-dashboard/performance/
- type: ChangeLog
  url: changelog/dcc-smart-changelog.yml
- type: ChangeLog
  url: https://github.com/SmartDCCInnovation/dccboxed-signing-tool/releases
- type: Roadmap
  url: https://www.smartdcc.co.uk/our-smart-network/network-updates/
- type: VulnerabilityDisclosure
  url: security/dcc-smart-vulnerability-disclosure.yml
- type: Security
  url: https://www.smartdcc.co.uk/media/sn5dn4hr/information-security-policy-3.pdf
- type: WellKnown
  url: well-known/dcc-smart-well-known.yml
- type: LLMsTxt
  url: llms/dcc-smart-llms.txt
- type: Vocabulary
  url: vocabulary/dcc-smart-vocabulary.yml
- type: JSONSchema
  url: json-schema/dcc-smart-dccboxed-keystore-schema.json
- type: Support
  url: https://www.smartdcc.co.uk/contact-us-service-users/
- type: PrivacyPolicy
  url: https://www.smartdcc.co.uk/privacy-notice/
- type: Pricing
  url: https://www.smartdcc.co.uk/about-dcc/governance-regulations/charges/
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com