Greenspark website screenshot

Greenspark

Greenspark is an Impact-as-a-Service platform that lets businesses embed climate and environmental action into their products and customer journeys. Its Climate API programmatically funds verified impacts — carbon offset, tree planting, ocean-plastic recovery, kelp restoration, clean water and bee protection — and provides carbon-footprint estimation (by Merchant Category Code or Open Banking category), impact reporting, email/notification templates, and embeddable impact widgets for storefronts. Authentication is a single x-api-key header with separate sandbox, demo and production environments. Greenspark ships six first-party TypeScript SDKs, a ReadMe-hosted MCP server, and packaged Agent Skills. Backed by Anthemis; profiled and enriched by the API Evangelist network.

Greenspark publishes 7 APIs on the APIs.io network, including Account API, Email API, Estimations API, and 4 more. Tagged areas include Sustainability, Carbon Offset, Climate, Impact, and Carbon Estimation.

Greenspark’s developer surface includes documentation, API reference, support, pricing, signup flow, authentication, sandbox, and 21 more developer resources.

🌐 Visit website 📡 Source on GitHub
51.9/100 developing ▬ flat Agent 50/100 agent ready Full breakdown ↓
scored 2026-08-10 · rubric v0.9.1
AccessSelf serve
7 APIs 1 MCP Servers
SustainabilityCarbon OffsetClimateImpactCarbon EstimationReportingESGFintech

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-10 · rubric v0.9.1
Composite quality — 51.9/100 · developing
Contract Quality 16.1 / 25
Developer Ergonomics 13.5 / 20
Commercial Clarity 8.9 / 20
Operational Transparency 2.7 / 13
Governance 1.4 / 12
Discoverability 9.3 / 10
Agent readiness — 50/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
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 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 0 / 4
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/greenspark: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 7

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

Greenspark Account API

The Account API from Greenspark — 3 operation(s) for account.

Greenspark Email API

The Email API from Greenspark — 14 operation(s) for email.

Greenspark Estimations API

The Estimations API from Greenspark — 4 operation(s) for estimations.

Greenspark Impacts API

The Impacts API from Greenspark — 5 operation(s) for impacts.

Greenspark Projects API

The Projects API from Greenspark — 3 operation(s) for projects.

Greenspark Reports API

The Reports API from Greenspark — 15 operation(s) for reports.

Greenspark Widgets API

The Widgets API from Greenspark — 17 operation(s) for widgets.

Scroll for all 7

MCP Servers 1

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

greenspark-mcp.yml

MCP SERVER

Security Posture 2

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

Greenspark Authentication

apiKey · 1 scheme

SECURITY

Greenspark Domain Security

TLSv1.3 · DMARC

SECURITY

Agentic Access 1

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

Greenspark Agentic Access

67 operations · 38 acting · 1 human-in-the-loop

67 operations · 38 acting

AGENTIC

Resources

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 SignUp
SignUp
 Login
Login
 Sandbox
Sandbox

Documentation 3

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference
 OpenAPI
OpenAPI

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess
 MCPServer
MCPServer
 AgentSkill
AgentSkill
 LLMsTxt
LLMsTxt

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Conventions
Conventions
 Lifecycle
Lifecycle
 ErrorCatalog
ErrorCatalog
 Components
Components
 Conformance
Conformance
 DataModel
DataModel

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization
 Packages
Packages
 SDKs
SDKs

Access & Security 2

Authentication, authorization, and security posture

Authentication
Authentication
 DomainSecurity
DomainSecurity

Operate 2

Status, limits, changes, and where to get help

Support
Support
 ChangeLog
ChangeLog

Commercial 3

Pricing, plans, and the legal terms of use

Pricing
Pricing
 TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Other 1

Properties that don't map to a standard resource type

Overlay
Overlay

Source (apis.yml)

apis.yml Raw ↑ 
aid: greenspark
name: Greenspark
description: Greenspark is an Impact-as-a-Service platform that lets businesses embed climate and environmental action into
  their products and customer journeys. Its Climate API programmatically funds verified impacts — carbon offset, tree planting,
  ocean-plastic recovery, kelp restoration, clean water and bee protection — and provides carbon-footprint estimation (by
  Merchant Category Code or Open Banking category), impact reporting, email/notification templates, and embeddable impact
  widgets for storefronts. Authentication is a single x-api-key header with separate sandbox, demo and production environments.
  Greenspark ships six first-party TypeScript SDKs, a ReadMe-hosted MCP server, and packaged Agent Skills. Backed by Anthemis;
  profiled and enriched by the API Evangelist network.
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://cdn.prod.website-files.com/611391a1477389e3857d8014/64cb3773a1ba8a68d73a88ad_greenspark-logo.svg
url: https://raw.githubusercontent.com/api-evangelist/greenspark/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- anthemis
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Sustainability
- Carbon Offset
- Climate
- Impact
- Carbon Estimation
- Reporting
- ESG
- Fintech
apis:
- aid: greenspark:greenspark-account-api
  name: Greenspark Account API
  description: The Account API from Greenspark — 3 operation(s) for account.
  humanURL: https://docs.getgreenspark.com
  baseURL: https://api.getgreenspark.com
  tags:
  - Account
  properties:
  - type: OpenAPI
    url: openapi/greenspark-account-api-openapi.yml
  - type: DeveloperPortal
    url: https://docs.getgreenspark.com
  - type: Documentation
    url: https://docs.getgreenspark.com/docs
  - type: APIReference
    url: https://docs.getgreenspark.com/reference
- aid: greenspark:greenspark-email-api
  name: Greenspark Email API
  description: The Email API from Greenspark — 14 operation(s) for email.
  humanURL: https://docs.getgreenspark.com
  baseURL: https://api.getgreenspark.com
  tags:
  - Email
  properties:
  - type: OpenAPI
    url: openapi/greenspark-email-api-openapi.yml
  - type: DeveloperPortal
    url: https://docs.getgreenspark.com
  - type: Documentation
    url: https://docs.getgreenspark.com/docs
  - type: APIReference
    url: https://docs.getgreenspark.com/reference
- aid: greenspark:greenspark-estimations-api
  name: Greenspark Estimations API
  description: The Estimations API from Greenspark — 4 operation(s) for estimations.
  humanURL: https://docs.getgreenspark.com
  baseURL: https://api.getgreenspark.com
  tags:
  - Estimations
  properties:
  - type: OpenAPI
    url: openapi/greenspark-estimations-api-openapi.yml
  - type: DeveloperPortal
    url: https://docs.getgreenspark.com
  - type: Documentation
    url: https://docs.getgreenspark.com/docs
  - type: APIReference
    url: https://docs.getgreenspark.com/reference
- aid: greenspark:greenspark-impacts-api
  name: Greenspark Impacts API
  description: The Impacts API from Greenspark — 5 operation(s) for impacts.
  humanURL: https://docs.getgreenspark.com
  baseURL: https://api.getgreenspark.com
  tags:
  - Impacts
  properties:
  - type: OpenAPI
    url: openapi/greenspark-impacts-api-openapi.yml
  - type: DeveloperPortal
    url: https://docs.getgreenspark.com
  - type: Documentation
    url: https://docs.getgreenspark.com/docs
  - type: APIReference
    url: https://docs.getgreenspark.com/reference
- aid: greenspark:greenspark-projects-api
  name: Greenspark Projects API
  description: The Projects API from Greenspark — 3 operation(s) for projects.
  humanURL: https://docs.getgreenspark.com
  baseURL: https://api.getgreenspark.com
  tags:
  - Projects
  properties:
  - type: OpenAPI
    url: openapi/greenspark-projects-api-openapi.yml
  - type: DeveloperPortal
    url: https://docs.getgreenspark.com
  - type: Documentation
    url: https://docs.getgreenspark.com/docs
  - type: APIReference
    url: https://docs.getgreenspark.com/reference
- aid: greenspark:greenspark-reports-api
  name: Greenspark Reports API
  description: The Reports API from Greenspark — 15 operation(s) for reports.
  humanURL: https://docs.getgreenspark.com
  baseURL: https://api.getgreenspark.com
  tags:
  - Reports
  properties:
  - type: OpenAPI
    url: openapi/greenspark-reports-api-openapi.yml
  - type: DeveloperPortal
    url: https://docs.getgreenspark.com
  - type: Documentation
    url: https://docs.getgreenspark.com/docs
  - type: APIReference
    url: https://docs.getgreenspark.com/reference
- aid: greenspark:greenspark-widgets-api
  name: Greenspark Widgets API
  description: The Widgets API from Greenspark — 17 operation(s) for widgets.
  humanURL: https://docs.getgreenspark.com
  baseURL: https://api.getgreenspark.com
  tags:
  - Widgets
  properties:
  - type: OpenAPI
    url: openapi/greenspark-widgets-api-openapi.yml
  - type: DeveloperPortal
    url: https://docs.getgreenspark.com
  - type: Documentation
    url: https://docs.getgreenspark.com/docs
  - type: APIReference
    url: https://docs.getgreenspark.com/reference
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DeveloperPortal
  url: https://docs.getgreenspark.com
- type: Documentation
  url: https://docs.getgreenspark.com/docs
- type: APIReference
  url: https://docs.getgreenspark.com/reference
- type: GitHubOrganization
  url: https://github.com/getgreenspark
- type: Support
  url: mailto:support@getgreenspark.com
- type: Pricing
  url: https://www.getgreenspark.com/pricing/business
- type: SignUp
  url: https://app.getgreenspark.com/login
- type: Login
  url: https://app.getgreenspark.com/login
- type: TermsOfService
  url: https://www.getgreenspark.com/utility/legal
- type: PrivacyPolicy
  url: https://app.privasee.io/privacy-portal/61a7587adcff740014657fbf
- type: OpenAPI
  url: openapi/_original/greenspark-openapi.yml
- type: Authentication
  url: authentication/greenspark-authentication.yml
- type: AgenticAccess
  url: agentic-access/greenspark-agentic-access.yml
- type: DomainSecurity
  url: security/greenspark-domain-security.yml
- type: Packages
  url: packages/greenspark-packages.yml
- type: SDKs
  url: packages/greenspark-packages.yml
- type: MCPServer
  url: mcp/greenspark-mcp.yml
- type: AgentSkill
  url: skills/_index.yml
- type: LLMsTxt
  url: llms/greenspark-llms.txt
- type: Conventions
  url: conventions/greenspark-conventions.yml
- type: Lifecycle
  url: lifecycle/greenspark-lifecycle.yml
- type: ErrorCatalog
  url: errors/greenspark-problem-types.yml
- type: Sandbox
  url: sandbox/greenspark-sandbox.yml
- type: Components
  url: components/greenspark-components.yml
- type: Conformance
  url: conformance/greenspark-conformance.yml
- type: DataModel
  url: data-model/greenspark-data-model.yml
- type: ChangeLog
  url: changelog/greenspark-changelog.yml
- type: Overlay
  url: overlays/greenspark-openapi-overlay.yaml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence