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 1 API on the APIs.io network: Climate API. 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

49.0/100 developing Agent 65/100 agent native Full breakdown ↓
scored 2026-07-20 · rubric v0.4

1 APIs 1 MCP Servers 0 Features

SustainabilityCarbon OffsetClimateImpactCarbon EstimationReportingESGFintech

API Rating

API Evangelist Rating How this is scored →
scored 2026-07-20 · rubric v0.4

Composite quality — 49.0/100 · developing

Contract Quality 14.6 / 25

Developer Ergonomics 13.5 / 20

Commercial Clarity 8.9 / 20

Operational Transparency 2.7 / 13

Governance 0.0 / 12

Discoverability 9.3 / 10

Agent readiness — 65/100 · agent native

Machine-Readable Contract 18 / 18

Agentic Access Contract 15 / 15

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 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

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 →

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

SignUp

SignUp

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

MCPServer

AgentSkill

LLMsTxt

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Conventions

Lifecycle

ErrorCatalog

Components

Conformance

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)

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.
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-climate-api
  name: Greenspark Climate API
  humanURL: https://docs.getgreenspark.com
  baseURL: https://api.getgreenspark.com
  tags:
  - Climate
  - Carbon Offset
  - Impact
  - Sustainability
  description: The Greenspark Climate API creates and reports on verified environmental impacts (carbon, trees, plastic, kelp,
    water, bees), estimates transaction carbon footprints, and renders embeddable impact widgets. REST over HTTPS, JSON, authenticated
    with an x-api-key header; URI-path versioned (v1 -> v2).
  properties:
  - url: https://docs.getgreenspark.com
    type: DeveloperPortal
  - url: https://docs.getgreenspark.com/docs
    type: Documentation
  - url: https://docs.getgreenspark.com/reference
    type: APIReference
  - url: openapi/greenspark-openapi.yml
    type: OpenAPI
  - url: overlays/greenspark-openapi-overlay.yaml
    type: Overlay
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/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