GreenCalculus API
Carbon-accounting API: sourced emission factors + audit-traced calculations (PCAF, GHG Protocol), every value traceable to its source.
Visit greencalculus.com →DocsPricingSource
GreenCalculus is a carbon-accounting API providing 20,764 sourced greenhouse-gas emission factors across 50+ categories and seven calculation engines (GHG Protocol Scope 1/2/3, PCAF, EN 15978 embodied carbon, freight, spend-based, business travel). Every value is returned with its exact source reference, licence, data version, and a public verification URL, with version pinning via ?as_of= and deterministic receipt hashes. Access is via a JSON-over-HTTPS API, an MCP server (mcp.greencalculus.com, 12 tools), MIT-licensed Python and JavaScript client libraries, a Google Sheets add-on, and an OpenAPI 3 document.
- Category
- APIs & backend
- Pricing
- freemium
- Free tier
- yes
- API
- yes
- MCP server
- yes
- SDK
- yes
- Open source
- no
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Listed 2026-10-26 · last verified 2026-10-26 · extracted by @cf/zai-org/glm-5.3-flash · confidence 0.95
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API
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