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

The Singularity catalog on APIs.io includes 1 Spectral governance ruleset.

Singularity’s developer surface includes authentication, engineering blog, documentation, and 9 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

27.7/100 thin ▬ flat Agent 21/100 agent aware Front door AI 1/6 silent Heartbeat 59/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemiumSelf serveFree trial⚡ Free to try

1 published contract

Energy Carbon Emissions Grid Sustainability Carbon Intensity

What this lets a business do 1

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Sustainability Management

BC-740

Emissions

GET /v1/emissions/all-factors POST /v1/emissions/calculate-intensity/generated

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 27.7/100 · thin

Contract Quality 8.5 / 19

Developer Ergonomics 4.8 / 15

Access Clarity 1.2 / 15

Operational Transparency 1.0 / 10

Contract Governance 1.2 / 9

Discoverability 5.0 / 8

Regulatory Posture 1.5 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 21/100 · 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

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

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/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document

9 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 7.9 — up to +18.4 composite points
Contract Quality scores 45.3 — up to +13.7 composite points
Developer Ergonomics scores 32.1 — up to +13.6 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

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 the provider profile at artifacts.apis.io/singularity-energy/apis.yml: open an issue on github.com/api-evangelist/singularity-energy to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
LF Energy Landscape (open-source grid, utilities, EV and DER)	standard	34.5 (thin)	-	-
LF Energy Projects and Members (grid, DER, EV charging open source)	standard	34.5 (thin)	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OpenAPI

measured — observed by APIs.io (published)

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 4

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

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

Singularity API pricing

Not yet checked against Singularity's own pricing page. Compiled by API Evangelist on 2026-06-21 from singularity.energy/grid-carbon-api; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Free Trial trial	Free
Per-Region Subscription subscription	—
Enterprise / Utility & Grid Operator enterprise	—

Plan details, limits and sources →

Rate limits

Request Quota: see provider documentation requests
Region Subscription Scope: per subscribed regions regions
Pagination: page / per_page records

Compiled by API Evangelist, not yet checked against Singularity's documentation. Rate-limit details →

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

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

Singularity

SLA

FinOps 1

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

Singularity Energy Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Singularity API Rules

58 rules · 56 errors 1 warnings 1 info

SPECTRAL

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 · 2 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

Other 1

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

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
  gated: none
  gated_source:
  - onboarding
  label: Freemium (free trial) · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/singularity-energy.png
x-docs-platform: stoplight
x-docs-platform-confidence: high
x-docs-platform-checked: 2026-10-04
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: CapabilityMap
  url: capabilities/singularity-energy-capability-edges.yml
  name: Singularity Business Capability Map
- 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

Singularity API — frequently asked questions

Does Singularity have an API?

Yes. APIs.io lists 3 APIs from Singularity, including Singularity Emissions API, Singularity Events API and Singularity Interchange API.

Is there an OpenAPI specification for the Singularity API?

Yes. APIs.io indexes 3 OpenAPI specifications for Singularity, each linked for download from this page.

How do I authenticate with the Singularity API?

Singularity uses bearer-token authentication (apiKey · 1 scheme). The details are profiled on APIs.io as Singularity Energy Authentication.

How much does the Singularity API cost?

APIs.io lists 3 pricing plans for Singularity, with each plan's price, limits and inclusions under Pricing on this page.

Is the Singularity API ready for AI agents?

Singularity has a Kin Score of 27.7 out of 100 (thin) and an Agent Readiness score of 20.7 (agent-aware), scored by API Evangelist on 2026-11-06.

Work with this as data

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Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

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