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: '0.19'
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: 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