emission-factors-com

Emission-factors.com provides a free REST API and MCP server that translates US ZIP codes into EPA eGRID grid‑carbon emission factors, electricity rates, hourly grid carbon data, utility tariffs, and plant emissions. It aggregates data from EPA eGRID, EIA‑930, EPA CAMD, and OpenEI URDB, offering 12 data endpoints for developers and sustainability teams to calculate Scope 2 emissions without requiring an API key or signup. The service includes tools for bulk CSV processing, hourly intensity calculations, and AI‑ready MCP tools, supporting CDP, CSRD, and SB 253 compliance.

emission-factors-com publishes 15 API contracts indexed on the APIs.io network, including Bulk API, Calculate API, Cleanest Hours API, and 12 more. Tagged areas include Company, Emission, Carbon, Energy, and Sustainability.

The emission-factors-com catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

emission-factors-com’s developer surface includes authentication, engineering blog, getting-started guide, documentation, API reference, and 18 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

48.1/100 developing Agent 40/100 agent ready Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

1 published contract 1 MCP Servers 1 Agent Skills

CompanyEmissionCarbon Energy SustainabilityAPI

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 48.1/100 · developing

Contract Quality 10.5 / 21

Developer Ergonomics 8.4 / 17

Access Clarity 3.6 / 17

Operational Transparency 2.1 / 11

Contract Governance 8.1 / 10

Discoverability 5.5 / 9

Regulatory Posture 5.2 / 15

Agent readiness — 40/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 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 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

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 could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

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/.

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

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)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks
Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too

5 more unmet checks in the Agent Readiness table above.

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

Access Clarity scores 21.1 — up to +15.8 composite points
Contract Quality scores 49.5 — up to +12.6 composite points
Operational Transparency scores 18.9 — up to +10.5 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/emission-factors-com/apis.yml: open an issue on github.com/api-evangelist/emission-factors-com 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 →

APIs 15

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

emission-factors-com Bulk API

The Bulk API from emission-factors-com — 1 operation(s) for bulk.

emission-factors-com Calculate API

The Calculate API from emission-factors-com — 1 operation(s) for calculate.

emission-factors-com Cleanest Hours API

The Cleanest Hours API from emission-factors-com — 1 operation(s) for cleanest hours.

emission-factors-com Compare API

The Compare API from emission-factors-com — 1 operation(s) for compare.

emission-factors-com Fuel Emissions API

The Fuel Emissions API from emission-factors-com — 1 operation(s) for fuel emissions.

emission-factors-com Health API

The Health API from emission-factors-com — 1 operation(s) for health.

emission-factors-com Intensity API

The Intensity API from emission-factors-com — 1 operation(s) for intensity.

emission-factors-com Lookup API

The Lookup API from emission-factors-com — 3 operation(s) for lookup.

emission-factors-com MCP API

The Mcp API from emission-factors-com — 1 operation(s) for mcp.

emission-factors-com Methodology API

The Methodology API from emission-factors-com — 1 operation(s) for methodology.

emission-factors-com Openapi.json API

The Openapi.json API from emission-factors-com — 1 operation(s) for openapi.json.

emission-factors-com Plant Emissions API

The Plant Emissions API from emission-factors-com — 1 operation(s) for plant emissions.

emission-factors-com Rate API

The Rate API from emission-factors-com — 1 operation(s) for rate.

emission-factors-com Status API

The Status API from emission-factors-com — 1 operation(s) for status.

emission-factors-com Utility Rate API

The Utility Rate API from emission-factors-com — 1 operation(s) for utility rate.

Scroll for all 15

MCP Servers 1

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

emission-factors-com MCP Server

Remote MCP server at emission-factors.com.

MCP SERVER

Agent Skills 1

Packaged agent skills for driving this provider's APIs from an AI assistant.

emission-factors-com-mcp-tools

AGENT SKILL

Rate Limits 1

Documented rate limits and quota policies.

Emission Factors Com Rate Limits

1 limits

RATE LIMITS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Emission Factors Com Context

2 classes · 34 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

emission-factors-com API Rules

10 rules · 8 errors 1 warnings 1 info

SPECTRAL

JSON Schema 1

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

LookupResponse

4 properties

JSON SCHEMA

Security Posture 2

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

Emission Factors Com Authentication

2 schemes

SECURITY

Emission Factors Com Domain Security

TLSv1.3 · HSTS

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Emission Factors Com Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Agentic Access 1

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

Emission Factors Com Agentic Access

18 operations · 5 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgentSkill

LLMsTxt

MCPServer

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

ErrorCatalog

Conformance

Build 1

SDKs, sample code, and the tooling you integrate with

ToolCrosswalk

ToolCrosswalk

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Blog

Blog

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: emission-factors-com
name: emission-factors-com
description: Emission-factors.com provides a free REST API and MCP server that translates US ZIP codes into EPA eGRID grid‑carbon
  emission factors, electricity rates, hourly grid carbon data, utility tariffs, and plant emissions. It aggregates data from
  EPA eGRID, EIA‑930, EPA CAMD, and OpenEI URDB, offering 12 data endpoints for developers and sustainability teams to calculate
  Scope 2 emissions without requiring an API key or signup. The service includes tools for bulk CSV processing, hourly intensity
  calculations, and AI‑ready MCP tools, supporting CDP, CSRD, and SB 253 compliance.
url: https://artifacts.apis.io/emission-factors-com/apis.yml
image: https://emission-factors.com/favicon.svg
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-30 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-30'
modified: '2026-10-30'
tags:
- Company
- Emission
- Carbon
- Energy
- Sustainability
- API
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/emission-factors-com-agentic-access.yml
- type: RateLimits
  url: rate-limits/emission-factors-com-rate-limits.yml
- type: Spectral
  url: rules/emission-factors-com-rules.yml
- type: JSONLD
  url: json-ld/emission-factors-com-context.jsonld
- type: Vocabulary
  url: vocabulary/emission-factors-com-vocabulary.yml
- type: AgentSkill
  url: skills/_index.yml
- type: DataModel
  url: data-model/emission-factors-com-data-model.yml
- type: Authentication
  url: authentication/emission-factors-com-authentication.yml
- type: ErrorCatalog
  url: errors/emission-factors-com-problem-types.yml
- type: Conformance
  url: conformance/emission-factors-com-conformance.yml
- type: LLMsTxt
  url: llms/emission-factors-com-llms.txt
- type: ToolCrosswalk
  url: mcp/emission-factors-com-tool-crosswalk.yml
- type: MCPServer
  url: mcp/emission-factors-com-mcp.yml
- type: Hosts
  url: hosts/emission-factors-com-hosts.yml
- type: Vendors
  url: vendors/emission-factors-com-vendors.yml
- type: Blog
  url: https://emission-factors.com/blog/egrid-2024-preliminary-emission-factors.html
- type: GettingStarted
  url: https://emission-factors.com/mcp-setup
- type: DomainSecurity
  url: security/emission-factors-com-domain-security.yml
- type: Website
  url: https://emission-factors.com/
- type: Documentation
  url: https://emission-factors.com/api-docs
- type: APIReference
  url: https://emission-factors.com/api-docs
- type: TermsOfService
  url: https://emission-factors.com/terms.html
- type: PrivacyPolicy
  url: https://emission-factors.com/privacy.html
apis:
- aid: emission-factors-com:emission-factors-com-bulk-api
  name: emission-factors-com Bulk API
  description: The Bulk API from emission-factors-com — 1 operation(s) for bulk.
  humanURL: https://emission-factors.com/api-docs
  baseURL: https://emission-factors.com
  tags:
  - Bulk
  properties:
  - type: OpenAPI
    url: openapi/emission-factors-com-bulk-api-openapi.yml
  - type: JSONSchema
    url: json-schema/emission-factors-com-lookup-response-schema.json
- aid: emission-factors-com:emission-factors-com-calculate-api
  name: emission-factors-com Calculate API
  description: The Calculate API from emission-factors-com — 1 operation(s) for calculate.
  humanURL: https://emission-factors.com/api-docs
  baseURL: https://emission-factors.com
  tags:
  - Calculate
  properties:
  - type: OpenAPI
    url: openapi/emission-factors-com-calculate-api-openapi.yml
  - type: JSONSchema
    url: json-schema/emission-factors-com-lookup-response-schema.json
- aid: emission-factors-com:emission-factors-com-cleanest-hours-api
  name: emission-factors-com Cleanest Hours API
  description: The Cleanest Hours API from emission-factors-com — 1 operation(s) for cleanest hours.
  humanURL: https://emission-factors.com/api-docs
  baseURL: https://emission-factors.com
  tags:
  - Cleanest Hours
  properties:
  - type: OpenAPI
    url: openapi/emission-factors-com-cleanest-hours-api-openapi.yml
  - type: JSONSchema
    url: json-schema/emission-factors-com-lookup-response-schema.json
- aid: emission-factors-com:emission-factors-com-compare-api
  name: emission-factors-com Compare API
  description: The Compare API from emission-factors-com — 1 operation(s) for compare.
  humanURL: https://emission-factors.com/api-docs
  baseURL: https://emission-factors.com
  tags:
  - Compare
  properties:
  - type: OpenAPI
    url: openapi/emission-factors-com-compare-api-openapi.yml
  - type: JSONSchema
    url: json-schema/emission-factors-com-lookup-response-schema.json
- aid: emission-factors-com:emission-factors-com-fuel-emissions-api
  name: emission-factors-com Fuel Emissions API
  description: The Fuel Emissions API from emission-factors-com — 1 operation(s) for fuel emissions.
  humanURL: https://emission-factors.com/api-docs
  baseURL: https://emission-factors.com
  tags:
  - Fuel Emissions
  properties:
  - type: OpenAPI
    url: openapi/emission-factors-com-fuel-emissions-api-openapi.yml
  - type: JSONSchema
    url: json-schema/emission-factors-com-lookup-response-schema.json
- aid: emission-factors-com:emission-factors-com-health-api
  name: emission-factors-com Health API
  description: The Health API from emission-factors-com — 1 operation(s) for health.
  humanURL: https://emission-factors.com/api-docs
  baseURL: https://emission-factors.com
  tags:
  - Health
  properties:
  - type: OpenAPI
    url: openapi/emission-factors-com-health-api-openapi.yml
  - type: JSONSchema
    url: json-schema/emission-factors-com-lookup-response-schema.json
- aid: emission-factors-com:emission-factors-com-intensity-api
  name: emission-factors-com Intensity API
  description: The Intensity API from emission-factors-com — 1 operation(s) for intensity.
  humanURL: https://emission-factors.com/api-docs
  baseURL: https://emission-factors.com
  tags:
  - Intensity
  properties:
  - type: OpenAPI
    url: openapi/emission-factors-com-intensity-api-openapi.yml
  - type: JSONSchema
    url: json-schema/emission-factors-com-lookup-response-schema.json
- aid: emission-factors-com:emission-factors-com-lookup-api
  name: emission-factors-com Lookup API
  description: The Lookup API from emission-factors-com — 3 operation(s) for lookup.
  humanURL: https://emission-factors.com/api-docs
  baseURL: https://emission-factors.com
  tags:
  - Lookup
  properties:
  - type: OpenAPI
    url: openapi/emission-factors-com-lookup-api-openapi.yml
  - type: JSONSchema
    url: json-schema/emission-factors-com-lookup-response-schema.json
- aid: emission-factors-com:emission-factors-com-mcp-api
  name: emission-factors-com MCP API
  description: The Mcp API from emission-factors-com — 1 operation(s) for mcp.
  humanURL: https://emission-factors.com/api-docs
  baseURL: https://emission-factors.com
  tags:
  - Mcp
  properties:
  - type: OpenAPI
    url: openapi/emission-factors-com-mcp-api-openapi.yml
  - type: JSONSchema
    url: json-schema/emission-factors-com-lookup-response-schema.json
- aid: emission-factors-com:emission-factors-com-methodology-api
  name: emission-factors-com Methodology API
  description: The Methodology API from emission-factors-com — 1 operation(s) for methodology.
  humanURL: https://emission-factors.com/api-docs
  baseURL: https://emission-factors.com
  tags:
  - Methodology
  properties:
  - type: OpenAPI
    url: openapi/emission-factors-com-methodology-api-openapi.yml
  - type: JSONSchema
    url: json-schema/emission-factors-com-lookup-response-schema.json
- aid: emission-factors-com:emission-factors-com-openapi-json-api
  name: emission-factors-com Openapi.json API
  description: The Openapi.json API from emission-factors-com — 1 operation(s) for openapi.json.
  humanURL: https://emission-factors.com/api-docs
  baseURL: https://emission-factors.com
  tags:
  - Openapi.json
  properties:
  - type: OpenAPI
    url: openapi/emission-factors-com-openapi-json-api-openapi.yml
  - type: JSONSchema
    url: json-schema/emission-factors-com-lookup-response-schema.json
- aid: emission-factors-com:emission-factors-com-plant-emissions-api
  name: emission-factors-com Plant Emissions API
  description: The Plant Emissions API from emission-factors-com — 1 operation(s) for plant emissions.
  humanURL: https://emission-factors.com/api-docs
  baseURL: https://emission-factors.com
  tags:
  - Plant Emissions
  properties:
  - type: OpenAPI
    url: openapi/emission-factors-com-plant-emissions-api-openapi.yml
  - type: JSONSchema
    url: json-schema/emission-factors-com-lookup-response-schema.json
- aid: emission-factors-com:emission-factors-com-rate-api
  name: emission-factors-com Rate API
  description: The Rate API from emission-factors-com — 1 operation(s) for rate.
  humanURL: https://emission-factors.com/api-docs
  baseURL: https://emission-factors.com
  tags:
  - Rate
  properties:
  - type: OpenAPI
    url: openapi/emission-factors-com-rate-api-openapi.yml
  - type: JSONSchema
    url: json-schema/emission-factors-com-lookup-response-schema.json
- aid: emission-factors-com:emission-factors-com-status-api
  name: emission-factors-com Status API
  description: The Status API from emission-factors-com — 1 operation(s) for status.
  humanURL: https://emission-factors.com/api-docs
  baseURL: https://emission-factors.com
  tags:
  - Status
  properties:
  - type: OpenAPI
    url: openapi/emission-factors-com-status-api-openapi.yml
  - type: JSONSchema
    url: json-schema/emission-factors-com-lookup-response-schema.json
- aid: emission-factors-com:emission-factors-com-utility-rate-api
  name: emission-factors-com Utility Rate API
  description: The Utility Rate API from emission-factors-com — 1 operation(s) for utility rate.
  humanURL: https://emission-factors.com/api-docs
  baseURL: https://emission-factors.com
  tags:
  - Utility Rate
  properties:
  - type: OpenAPI
    url: openapi/emission-factors-com-utility-rate-api-openapi.yml
  - type: JSONSchema
    url: json-schema/emission-factors-com-lookup-response-schema.json
x-enrichment:
  date: '2026-10-30'
  status: enriched
  artifacts_added: 31
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

emission-factors-com API — frequently asked questions

Does emission-factors-com have an API?

Yes. APIs.io lists 15 APIs from emission-factors-com, including emission-factors-com Bulk API, emission-factors-com Calculate API and emission-factors-com Cleanest Hours API, and 12 more.

Is there an OpenAPI specification for the emission-factors-com API?

Yes. APIs.io indexes 15 OpenAPI specifications for emission-factors-com, each linked for download from this page.

How do I authenticate with the emission-factors-com API?

emission-factors-com uses bearer-token authentication (2 schemes). The details are profiled on APIs.io as Emission Factors Com Authentication.

Does emission-factors-com have an MCP server?

Yes. APIs.io lists 1 MCP server for emission-factors-com: Remote MCP server at emission-factors.com.

Is the emission-factors-com API ready for AI agents?

emission-factors-com has a Kin Score of 48.1 out of 100 (developing) and an Agent Readiness score of 40.0 (agent-ready), scored by API Evangelist on 2026-10-31.

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