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 API contracts indexed 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 24 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

54.0/100 developing ▲ 7.9 Agent 26/100 agent aware Front door AI 1/6 silent saas Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

1 published contract 1 MCP Servers 7 Agent Skills

SustainabilityCarbon OffsetClimate ImpactCarbon EstimationReporting ESG Fintech

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

EstimationsImpactsReports

POST /v1/estimations/transaction/mcc POST /v1/impacts GET /v1/reports/carbon-by-interval GET /v1/reports

Kin Score

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

Composite quality — 54.0/100 · developing

Contract Quality 11.1 / 21

Developer Ergonomics 10.9 / 17

Access Clarity 14.3 / 17

Operational Transparency 2.3 / 11

Contract Governance 0.5 / 10

Discoverability 5.5 / 9

Regulatory Posture 3.7 / 15

Agent readiness — 26/100 · agent aware

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 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

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 0 / 5

Distinct Operations 0 / 3

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) 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
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
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

8 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 52.4 — up to +11.9 composite points
Contract Governance scores 4.5 — up to +11.5 composite points
Operational Transparency scores 21.1 — up to +10.3 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/greenspark/apis.yml: open an issue on github.com/api-evangelist/greenspark 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
Agent Skills (SKILL.md packages)	long-tail	12.1 (thin)	-	1

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.

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

Open Collections 7

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

Greenspark Climate Account API

OPEN COLLECTION

Greenspark Climate Account Email API

OPEN COLLECTION

Greenspark Climate Account Estimations API

OPEN COLLECTION

Greenspark Climate Account Impacts API

OPEN COLLECTION

Greenspark Climate Account Projects API

OPEN COLLECTION

Greenspark Climate Account Reports API

OPEN COLLECTION

Greenspark Climate Account Widgets API

OPEN COLLECTION

Scroll for all 7

MCP Servers 1

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

Greenspark MCP Server

Greenspark operates an official remote MCP server hosted by ReadMe at https://docs.getgreenspark.com/mcp. v1 is read-only: it exposes the Greenspark OpenAPI specs and guides for...

MCP SERVER

Agent Skills 7

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

greenspark-account

AGENT SKILL

greenspark-auth-environments

AGENT SKILL

greenspark-impact

AGENT SKILL

greenspark-integration-workflow

AGENT SKILL

greenspark-mcp

AGENT SKILL

greenspark-projects

AGENT SKILL

greenspark-reporting

AGENT SKILL

Scroll for all 7

Pricing Plans 2

Published pricing tiers and plan structures.

Greenspark Plans Pricing

5 plans

PLANS

Greenspark Price Estimates

0 plans

PLANS

FinOps 1

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

Greenspark Finops

FINOPS

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Greenspark Openapi Overlay

2 actions · update · greenspark-openapi.yml

DERIVED

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 · 34 acting · 1 human-in-the-loop

67 operations · 34 acting

AGENTIC

Resources

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 4

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

PrivacyPolicy

Company 1

The organization behind the API

Website

Website

Other 2

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

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.
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: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  - sandbox
  generated: '2026-09-03'
  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: '0.23'
created: '2026-07-17'
modified: '2026-07-19'
x-docs-platform: readme
x-docs-platform-confidence: high
x-docs-platform-checked: 2026-10-03
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:
  - Project
  tags_raw:
  - 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: Plans
  url: plans/greenspark-plans-pricing.yml
- type: CapabilityMap
  url: capabilities/greenspark-capability-edges.yml
  name: Greenspark Business Capability Map
- type: Website
  url: https://www.getgreenspark.com/
- 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

Greenspark API — frequently asked questions

Does Greenspark have an API?

Yes. APIs.io lists 7 APIs from Greenspark, including Greenspark Account API, Greenspark Email API and Greenspark Estimations API, and 4 more.

Is there an OpenAPI specification for the Greenspark API?

Yes. APIs.io indexes 7 OpenAPI specifications for Greenspark, each linked for download from this page.

How do I authenticate with the Greenspark API?

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

How much does the Greenspark API cost?

APIs.io lists 5 pricing plans for Greenspark, with each plan's price, limits and inclusions under Pricing Plans on this page.

Does Greenspark have an MCP server?

Yes. APIs.io lists 1 MCP server for Greenspark: Greenspark operates an official remote MCP server hosted by ReadMe at https://docs.getgreenspark.com/mcp. v1 is read-only: it exposes the Greenspark OpenAPI specs and guides for schema-aware answers,

Is the Greenspark API ready for AI agents?

Greenspark has a Kin Score of 54.0 out of 100 (developing) and an Agent Readiness score of 26.1 (agent-aware), scored by API Evangelist on 2026-10-31.

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