Singularity

Singularity Energy is a Boston-based grid decarbonization data company. Its Grid Carbon API delivers hourly, location-specific electricity emissions intelligence - generated, consumed, and marginal carbon intensity, fuel mix, generation events, interchange, and 48-hour emissions forecasts across ISOs and balancing authorities in the U.S. and Canada.

Singularity publishes 3 APIs on the APIs.io network: Emissions API, Events API, and Interchange API. Tagged areas include Energy, Carbon Emissions, Grid, Sustainability, and Carbon Intensity.

Singularity’s developer surface includes authentication, engineering blog, documentation, and 8 more developer resources.

🌐 Visit website 📡 Source on GitHub

37.0/100 thin ▬ flat Agent 20/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessFreemiumSelf serveFree trial⚡ Free to try

1 APIs

Energy Carbon Emissions Grid Sustainability Carbon Intensity

Kin Score

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

Composite quality — 37.0/100 · thin

Contract Quality 9.4 / 19

Developer Ergonomics 4.8 / 15

Access Clarity 5.9 / 15

Operational Transparency 3.3 / 10

Contract Governance 0.0 / 9

Discoverability 5.1 / 8

Regulatory Posture 2.4 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 20/100 · agent aware

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 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 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

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/singularity-energy: 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 3

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

Singularity Emissions API

The Emissions API from Singularity — 3 operation(s) for emissions.

Singularity Events API

The Events API from Singularity — 4 operation(s) for events.

Singularity Interchange API

The Interchange API from Singularity — 2 operation(s) for interchange.

Open Collections 5

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

API Collection

OPEN COLLECTION

Singularity Grid Carbon Emissions API

OPEN COLLECTION

Singularity Grid Carbon Emissions Events API

OPEN COLLECTION

Singularity Grid Carbon Emissions Interchange API

OPEN COLLECTION

Singularity Grid Carbon API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Singularity Energy Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Singularity Energy Rate Limits

3 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Singularity Energy Finops

FINOPS

Security Posture 2

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

Singularity Energy Authentication

apiKey · 1 scheme

SECURITY

Singularity Energy Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Singularity Energy Agentic Access

9 operations · 3 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

Blog

Blog

LinkedIn

Website

Website

Source (apis.yml)

aid: singularity-energy
url: https://raw.githubusercontent.com/api-evangelist/singularity-energy/refs/heads/main/apis.yml
name: Singularity
kind: company
description: Singularity Energy is a Boston-based grid decarbonization data company. Its Grid Carbon API delivers hourly,
  location-specific electricity emissions intelligence - generated, consumed, and marginal carbon intensity, fuel mix, generation
  events, interchange, and 48-hour emissions forecasts across ISOs and balancing authorities in the U.S. and Canada.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: true
  try_now: true
  public: false
  label: Freemium (free trial) · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/singularity-energy.png
tags:
- Energy
- Carbon Emissions
- Grid
- Sustainability
- Carbon Intensity
created: '2026-06-21'
modified: '2026-06-21'
specificationVersion: '0.23'
apis:
- aid: singularity-energy:singularity-energy-emissions-api
  name: Singularity Emissions API
  description: The Emissions API from Singularity — 3 operation(s) for emissions.
  humanURL: https://docs.singularity.energy/docs/singularity-api/grid-carbon-api
  baseURL: https://api.singularity.energy
  tags:
  - Emissions
  properties:
  - type: OpenAPI
    url: openapi/singularity-energy-emissions-api-openapi.yml
  - type: Documentation
    url: https://docs.singularity.energy/docs/singularity-api/grid-carbon-api
  - type: APIReference
    url: https://docs.singularity.energy/docs/singularity-api/key-concepts
  - type: PostmanCollection
    url: collections/singularity-energy.postman_collection.json
  - type: OpenCollection
    url: collections/singularity-energy.opencollection.json
  - type: Documentation
    url: https://docs.singularity.energy/docs/singularity-api/key-concepts
  - type: Documentation
    url: https://docs.singularity.energy/docs/singularity-api/region-flow
- aid: singularity-energy:singularity-energy-events-api
  name: Singularity Events API
  description: The Events API from Singularity — 4 operation(s) for events.
  humanURL: https://docs.singularity.energy/docs/singularity-api/grid-carbon-api
  baseURL: https://api.singularity.energy
  tags:
  - Event
  tags_raw:
  - Events
  properties:
  - type: OpenAPI
    url: openapi/singularity-energy-events-api-openapi.yml
  - type: Documentation
    url: https://docs.singularity.energy/docs/singularity-api/grid-carbon-api
  - type: APIReference
    url: https://docs.singularity.energy/docs/singularity-api/key-concepts
  - type: PostmanCollection
    url: collections/singularity-energy.postman_collection.json
  - type: OpenCollection
    url: collections/singularity-energy.opencollection.json
  - type: Documentation
    url: https://docs.singularity.energy/docs/singularity-api/key-concepts
  - type: Documentation
    url: https://docs.singularity.energy/docs/singularity-api/region-flow
- aid: singularity-energy:singularity-energy-interchange-api
  name: Singularity Interchange API
  description: The Interchange API from Singularity — 2 operation(s) for interchange.
  humanURL: https://docs.singularity.energy/docs/singularity-api/grid-carbon-api
  baseURL: https://api.singularity.energy
  tags:
  - Interchange
  properties:
  - type: OpenAPI
    url: openapi/singularity-energy-interchange-api-openapi.yml
  - type: Documentation
    url: https://docs.singularity.energy/docs/singularity-api/grid-carbon-api
  - type: APIReference
    url: https://docs.singularity.energy/docs/singularity-api/key-concepts
  - type: PostmanCollection
    url: collections/singularity-energy.postman_collection.json
  - type: OpenCollection
    url: collections/singularity-energy.opencollection.json
  - type: Documentation
    url: https://docs.singularity.energy/docs/singularity-api/key-concepts
  - type: Documentation
    url: https://docs.singularity.energy/docs/singularity-api/region-flow
common:
- type: AgenticAccess
  url: agentic-access/singularity-energy-agentic-access.yml
- type: DomainSecurity
  url: security/singularity-energy-domain-security.yml
- type: Authentication
  url: authentication/singularity-energy-authentication.yml
- url: https://medium.com/feed/singularity-energy
  type: Blog
- type: GitHubOrganization
  url: https://github.com/singularity-energy
- type: LinkedIn
  url: https://www.linkedin.com/company/singularity-energy
- type: Website
  url: https://www.singularity.energy
- type: Documentation
  url: https://docs.singularity.energy
- type: Plans
  url: plans/singularity-energy-plans-pricing.yml
- type: RateLimits
  url: rate-limits/singularity-energy-rate-limits.yml
- type: FinOps
  url: finops/singularity-energy-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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