Toronto Hydro

Toronto Hydro is the municipally owned local electricity distribution company (LDC) for the City of Toronto, delivering power to roughly 800,000 residential and business customers across Canada's largest city. It sits in the wires-and-meters layer of Ontario's electricity value chain — it does not generate power and it does not run the wholesale market (that is IESO) — so the only customer-facing data it owns is smart-meter consumption, billing and account data. Its API posture is a clean example of a mandate that produced an implementation but not a developer product — Ontario's O. Reg. 633/21 under the Electricity Act, 1998 compelled rate-regulated electricity and gas utilities to offer Green Button Download My Data and Connect My Data conforming to NAESB REQ.21 ESPI v3.3 by 1 November 2023, and Toronto Hydro runs both — customer-facing Download My Data and Connect My Data pages behind its account login, a published third-party terms-and-conditions document, and a live third-party onboarding portal operated by its platform vendor Savage Data Systems. But there is no developer.torontohydro.com, no docs. or api. subdomain, no published base URI, no OpenAPI, and no self-serve keys. Consumer data is available only to companies that apply, pass a connectivity test and sign the third-party terms; market and grid data are not published openly at all. Mandated, implemented, and completely gated.

Toronto Hydro publishes 4 APIs on the APIs.io network, including Application Information API, Authorization API, Batch API, and 1 more. Tagged areas include Energy, Canada, Utilities, Electricity, and Smart Metering.

Toronto Hydro’s developer surface includes authentication, documentation, signup flow, getting-started guide, legal docs, support, FAQ, and 26 more developer resources.

🌐 Visit website 📡 Source on GitHub

30.9/100 thin ▬ flat Agent 28/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessSelf serve

1 APIs

Energy Canada Utilities Electricity Smart Metering Green Button Grid Ontario Consumer Data Electricity Distribution

Kin Score

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

Composite quality — 30.9/100 · thin

Contract Quality 2.4 / 21

Developer Ergonomics 7.2 / 17

Access Clarity 4.7 / 17

Operational Transparency 1.7 / 11

Contract Governance 0.5 / 10

Discoverability 5.0 / 9

Regulatory Posture 8.5 / 15

Agent readiness — 28/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 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 4 / 4

Delegated User Identity 6 / 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 does not apply to this provider. The published contracts declare no write operations, and a read-only API cannot create-or-update. The facet is excluded from this provider's denominator entirely — not scored zero. A reference or data API is not deficient for being unable to upsert.

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/. 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/toronto-hydro: 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 5

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

Toronto Hydro Green Button Download My Data

Toronto Hydro's Green Button Download My Data (DMD) implementation, also required by O. Reg. 633/21 and built to NAESB REQ.21 ESPI v3.3. A Toronto Hydro customer signs in to the...

Toronto Hydro Application Information API

Application Information endpoints

Toronto Hydro Authorization API

Authorization endpoints

Toronto Hydro Batch API

Batch data transfer endpoints

Toronto Hydro Usage Point API

Usage Point endpoints

Open Collections 1

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

Green Button API Documentation

OPEN COLLECTION

Security Posture 2

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

Toronto Hydro Authentication

oauth2 · 1 scheme

SECURITY

Toronto Hydro Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Toronto Hydro Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

SignUp

SignUp

GettingStarted

GettingStarted

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

WellKnown

WellKnown

LLMsTxt

LLMsTxt

AgentSkill

AgentSkill

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conventions

Conformance

ErrorCatalog

Lifecycle

DataModel

Build 1

SDKs, sample code, and the tooling you integrate with

Packages

Packages

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

OAuthScopes

OAuthScopes

Learn 1

Tutorials, courses, talks, and written guidance

Youtube

Youtube

Operate 3

Status, limits, changes, and where to get help

StatusPage

StatusPage

Support

Support

FAQ

FAQ

Commercial 4

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfUse

PrivacyPolicy

Legal

Company 6

The organization behind the API

Website

Website

Blog

Blog

LinkedIn

Twitter

Twitter

Facebook

Facebook

Instagram

Instagram

Other 3

Properties that don't map to a standard resource type

Overlay

Overlay

Registration

Registration

Regulations

Regulations

Source (apis.yml)

aid: toronto-hydro
url: https://raw.githubusercontent.com/api-evangelist/toronto-hydro/refs/heads/main/apis.yml
name: Toronto Hydro
kind: company
description: Toronto Hydro is the municipally owned local electricity distribution company (LDC) for the City of Toronto,
  delivering power to roughly 800,000 residential and business customers across Canada's largest city. It sits in the wires-and-meters
  layer of Ontario's electricity value chain — it does not generate power and it does not run the wholesale market (that is
  IESO) — so the only customer-facing data it owns is smart-meter consumption, billing and account data. Its API posture is
  a clean example of a mandate that produced an implementation but not a developer product — Ontario's O. Reg. 633/21 under
  the Electricity Act, 1998 compelled rate-regulated electricity and gas utilities to offer Green Button Download My Data
  and Connect My Data conforming to NAESB REQ.21 ESPI v3.3 by 1 November 2023, and Toronto Hydro runs both — customer-facing
  Download My Data and Connect My Data pages behind its account login, a published third-party terms-and-conditions document,
  and a live third-party onboarding portal operated by its platform vendor Savage Data Systems. But there is no developer.torontohydro.com,
  no docs. or api. subdomain, no published base URI, no OpenAPI, and no self-serve keys. Consumer data is available only to
  companies that apply, pass a connectivity test and sign the third-party terms; market and grid data are not published openly
  at all. Mandated, implemented, and completely gated.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-09-02'
  method: derived
image: https://www.torontohydro.com/favicon.ico
tags:
- Energy
- Canada
- Utilities
- Electricity
- Smart Metering
- Green Button
- Grid
- Ontario
- Consumer Data
- Electricity Distribution
created: '2026-07-27'
modified: '2026-07-27'
specificationVersion: '0.23'
apis:
- aid: toronto-hydro:toronto-hydro-green-button-download-my-data
  name: Toronto Hydro Green Button Download My Data
  description: Toronto Hydro's Green Button Download My Data (DMD) implementation, also required by O. Reg. 633/21 and built
    to NAESB REQ.21 ESPI v3.3. A Toronto Hydro customer signs in to their own account and downloads their electricity consumption,
    billing and customer data as a standards-conformant Green Button (ESPI XML) file they can hand to any tool they choose.
    This is a customer-account-gated self-service export rather than a programmatic API — there is no anonymous endpoint,
    no key, and no documented URL pattern — but the file it emits is a real, standardized, machine-readable energy-data artifact,
    which is what makes DMD the practical integration path for anyone not willing to complete third-party onboarding for CMD.
  humanURL: https://www.torontohydro.com/for-home/green-button
  tags:
  - Green Button
  - Download My Data
  - ESPI
  - Energy Usage
  - Consumer Data
  properties:
  - type: Documentation
    url: https://www.torontohydro.com/for-home/green-button
  - type: Login
    url: https://www.torontohydro.com/my-account/green-button-data
  - type: GettingStarted
    url: https://www.torontohydro.com/documents/d/guest/green-button-connect-my-data-customer-guide
- aid: toronto-hydro:toronto-hydro-applicationinformation-api
  name: Toronto Hydro Application Information API
  description: Application Information endpoints
  humanURL: https://www.torontohydro.com/for-home/green-button
  tags:
  - ApplicationInformation
  properties:
  - type: OpenAPI
    url: openapi/toronto-hydro-applicationinformation-api-openapi.yml
  - type: Documentation
    url: https://www.torontohydro.com/for-home/green-button
  - type: DeveloperPortal
    url: https://torontoonboarding.savagedata.com/
  - type: Registration
    url: https://torontoonboarding.savagedata.com/
  - type: TermsOfService
    url: https://www.torontohydro.com/green-button/third-party-terms
  - type: GettingStarted
    url: https://www.torontohydro.com/documents/d/guest/green-button-connect-my-data-customer-guide
  - type: Login
    url: https://www.torontohydro.com/my-account/green-button-connections
  - type: Certification
    url: https://www.greenbuttonalliance.org/testing
  - type: Documentation
    url: https://www.greenbuttondata.org/cmd.html
  - type: Documentation
    url: https://www.ontario.ca/laws/regulation/210633
- aid: toronto-hydro:toronto-hydro-authorization-api
  name: Toronto Hydro Authorization API
  description: Authorization endpoints
  humanURL: https://www.torontohydro.com/for-home/green-button
  tags:
  - Authorization
  properties:
  - type: OpenAPI
    url: openapi/toronto-hydro-authorization-api-openapi.yml
  - type: Documentation
    url: https://www.torontohydro.com/for-home/green-button
  - type: DeveloperPortal
    url: https://torontoonboarding.savagedata.com/
  - type: Registration
    url: https://torontoonboarding.savagedata.com/
  - type: TermsOfService
    url: https://www.torontohydro.com/green-button/third-party-terms
  - type: GettingStarted
    url: https://www.torontohydro.com/documents/d/guest/green-button-connect-my-data-customer-guide
  - type: Login
    url: https://www.torontohydro.com/my-account/green-button-connections
  - type: Certification
    url: https://www.greenbuttonalliance.org/testing
  - type: Documentation
    url: https://www.greenbuttondata.org/cmd.html
  - type: Documentation
    url: https://www.ontario.ca/laws/regulation/210633
- aid: toronto-hydro:toronto-hydro-batch-api
  name: Toronto Hydro Batch API
  description: Batch data transfer endpoints
  humanURL: https://www.torontohydro.com/for-home/green-button
  tags:
  - Batch
  properties:
  - type: OpenAPI
    url: openapi/toronto-hydro-batch-api-openapi.yml
  - type: Documentation
    url: https://www.torontohydro.com/for-home/green-button
  - type: DeveloperPortal
    url: https://torontoonboarding.savagedata.com/
  - type: Registration
    url: https://torontoonboarding.savagedata.com/
  - type: TermsOfService
    url: https://www.torontohydro.com/green-button/third-party-terms
  - type: GettingStarted
    url: https://www.torontohydro.com/documents/d/guest/green-button-connect-my-data-customer-guide
  - type: Login
    url: https://www.torontohydro.com/my-account/green-button-connections
  - type: Certification
    url: https://www.greenbuttonalliance.org/testing
  - type: Documentation
    url: https://www.greenbuttondata.org/cmd.html
  - type: Documentation
    url: https://www.ontario.ca/laws/regulation/210633
- aid: toronto-hydro:toronto-hydro-usagepoint-api
  name: Toronto Hydro Usage Point API
  description: Usage Point endpoints
  humanURL: https://www.torontohydro.com/for-home/green-button
  tags:
  - UsagePoint
  properties:
  - type: OpenAPI
    url: openapi/toronto-hydro-usagepoint-api-openapi.yml
  - type: Documentation
    url: https://www.torontohydro.com/for-home/green-button
  - type: DeveloperPortal
    url: https://torontoonboarding.savagedata.com/
  - type: Registration
    url: https://torontoonboarding.savagedata.com/
  - type: TermsOfService
    url: https://www.torontohydro.com/green-button/third-party-terms
  - type: GettingStarted
    url: https://www.torontohydro.com/documents/d/guest/green-button-connect-my-data-customer-guide
  - type: Login
    url: https://www.torontohydro.com/my-account/green-button-connections
  - type: Certification
    url: https://www.greenbuttonalliance.org/testing
  - type: Documentation
    url: https://www.greenbuttondata.org/cmd.html
  - type: Documentation
    url: https://www.ontario.ca/laws/regulation/210633
common:
- type: Overlay
  url: overlays/toronto-hydro-green-button-espi-overlay.yaml
- type: DomainSecurity
  url: security/toronto-hydro-domain-security.yml
- type: Authentication
  url: authentication/toronto-hydro-authentication.yml
- type: OAuthScopes
  url: scopes/toronto-hydro-scopes.yml
- type: Conventions
  url: conventions/toronto-hydro-conventions.yml
- type: Conformance
  url: conformance/toronto-hydro-conformance.yml
- type: ErrorCatalog
  url: errors/toronto-hydro-problem-types.yml
- type: Lifecycle
  url: lifecycle/toronto-hydro-lifecycle.yml
- type: DataModel
  url: data-model/toronto-hydro-data-model.yml
- type: Packages
  url: packages/toronto-hydro-packages.yml
- type: WellKnown
  url: well-known/toronto-hydro-well-known.yml
- type: LLMsTxt
  url: llms/toronto-hydro-llms.txt
- type: AgentSkill
  url: skills/_index.yml
- type: Website
  url: https://www.torontohydro.com/
- type: Documentation
  url: https://www.torontohydro.com/for-home/green-button
- type: DeveloperPortal
  url: https://torontoonboarding.savagedata.com/
- type: Registration
  url: https://torontoonboarding.savagedata.com/
- type: SignUp
  url: https://torontoonboarding.savagedata.com/
- type: GettingStarted
  url: https://www.torontohydro.com/documents/d/guest/green-button-connect-my-data-customer-guide
- type: TermsOfService
  url: https://www.torontohydro.com/green-button/third-party-terms
- type: TermsOfUse
  url: https://www.torontohydro.com/terms-conditions
- type: PrivacyPolicy
  url: https://www.torontohydro.com/privacy-policy
- type: Legal
  url: https://www.torontohydro.com/conditions-of-service
- type: StatusPage
  url: https://outagemap.torontohydro.com/
- type: Support
  url: https://www.torontohydro.com/contact-us
- type: FAQ
  url: https://www.torontohydro.com/frequently-asked-questions
- type: Blog
  url: https://www.torontohydro.com/newsroom
- type: Regulations
  url: https://www.torontohydro.com/regulatory-information
- type: LinkedIn
  url: https://ca.linkedin.com/company/toronto-hydro
- type: Twitter
  url: https://twitter.com/torontohydro
- type: Facebook
  url: https://www.facebook.com/TorontoHydro/
- type: Instagram
  url: https://www.instagram.com/torontohydro/
- type: Youtube
  url: https://www.youtube.com/user/TorontoHydro
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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