Greenly Carbon Accounting and ESG REST API
Greenly carbon accounting and ESG REST API for companies, finance teams, and sustainability managers to measure, analyze, and reduce carbon footprints — including Scope 1, 2, and 3 greenhouse gas emissions calculation, supply chain emissions tracking, employee engagement, offset portfolio management, and regulatory reporting — enabling automated carbon data collection, emissions factor application, climate action planning, and CSRD/TCFD compliance through Greenly's AI-powered carbon accounting platform for SMBs and enterprises. Enables AI agents to manage carbon data collection for activity data ingestion and emissions calculation automation, handle Scope 3 for supply chain and value chain emissions tracking automation, access emissions factors for GHG protocol-aligned emissions factor application automation, retrieve carbon footprint for company-level and product-level carbon calculation automation, manage reporting for CSRD, TCFD, and CDP regulatory reporting automation, handle offset for carbon credit and offset portfolio management automation, access supplier engagement for supply chain carbon data collection automation, retrieve reduction target for SBTi-aligned emissions target tracking automation, manage employee for staff travel and commuting emissions data automation, and integrate Greenly with accounting systems, HR, and ERP for automated carbon data collection.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
ESG/carbon. GDPR. OAuth2. EU. Company emissions and sustainability reporting data.
⚡ Reliability
Best When
A company, sustainability team, or finance function wanting AI agents to automate carbon emissions data collection, calculate Scope 1/2/3 footprints, track reduction targets, and generate CSRD, TCFD, and CDP reports through Greenly's AI-powered carbon accounting platform.
Avoid When
EMISSIONS FACTORS REQUIRE ANNUAL UPDATES: GHG emissions factors update annually (IPCC, IEA sources); automated static factor assumption creates outdated_calculation; automated must refresh emissions factors when Greenly releases annual updates. SCOPE 3 REQUIRES SUPPLIER DATA: Scope 3 supply chain emissions require data from suppliers; automated self-calculated Scope 3 assumption creates estimated_scope3 without actual supplier data; automated must implement supplier data collection workflow. REGULATORY STANDARDS ARE JURISDICTION-SPECIFIC: CSRD, GHG Protocol, and CDP have different reporting requirements; automated single-standard assumption creates non-compliant_report for specific regulatory frameworks; automated must configure for applicable regulatory standard. CARBON DATA QUALITY AFFECTS REPORTING: Emissions calculations depend on activity data quality; automated perfect data assumption creates inaccurate_footprint for missing or estimated activity data; automated must implement data quality validation and uncertainty tracking.
Use Cases
- • Calculating Scope 1, 2, and 3 carbon emissions from business activity data for ESG reporting automation agents
- • Tracking supply chain emissions for CSRD Scope 3 regulatory compliance automation agents
- • Generating climate disclosures for TCFD, CDP, and GRI sustainability reporting automation agents
- • Managing carbon reduction targets and SBTi alignment for climate strategy automation agents
Not For
- • Carbon trading and markets (Greenly is accounting/measurement, not carbon credit exchange)
- • Utility grid optimization (Greenly is GHG accounting, not energy management system)
- • Detailed engineering lifecycle assessment (Greenly is business-level carbon, not product LCA tool like SimaPro)
Interface
Authentication
Greenly uses API key + OAuth2 for carbon accounting REST API. REST API with JSON. Paris, France HQ. Founded 2019 by Alexis Normand. Products: Carbon accounting platform, CSRD reporting, Scope 3 tracking, Employee engagement, Supplier engagement. 2,000+ companies. GHG Protocol aligned. CSRD compliant. Backed by Fly Ventures, Électricité de France, and EQT. Competes with Persefoni, Watershed, and Plan A for SMB and mid-market carbon accounting.
Pricing
Paris FR. EU-based. Annual subscription. 2,000+ companies. CSRD/TCFD compliant. SMB to enterprise.
Agent Metadata
Known Gotchas
- ⚠ EMISSIONS FACTORS REQUIRE ANNUAL REFRESH: Greenly emissions factors are updated annually per IPCC/IEA/national energy mix data; automated static-factor assumption creates increasingly inaccurate calculation; automated must trigger annual emissions factor refresh in Greenly
- ⚠ ACTIVITY DATA CLASSIFICATION IS CRITICAL: Activity data must be correctly classified by GHG Protocol category; automated generic data submission assumption creates misclassified_emission for activity data not matched to correct emission category; automated must implement activity-to-category mapping validation
- ⚠ SCOPE 3 CATEGORIES ARE COMPLEX: GHG Protocol Scope 3 has 15 categories requiring different data and factors; automated single Scope 3 assumption creates incomplete_scope3 for missing categories; automated must implement category-by-category Scope 3 data collection
- ⚠ CSRD REPORTING HAS SPECIFIC TEMPLATES: CSRD (EU Corporate Sustainability Reporting Directive) has specific disclosure requirements; automated generic ESG assumption creates non-compliant CSRD for reports missing required ESRS disclosures; automated must configure for CSRD ESRS standard requirements
- ⚠ GREENLY VERIFIES DATA QUALITY: Greenly platform review process may flag low-quality data; automated unreviewed data assumption creates pending_verification status; automated must implement data quality review before finalizing carbon footprint reports
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Scores are editorial opinions as of 2026-03-07.