In 5 years, no serious company will deploy AI agents without carbon accountability.
GreenLedger is the carbon accountability layer for AI agents — routing to greener models, budgeting carbon per agent, and offsetting every inference. One SDK. No prompt rewrites.
of CO₂ since tab opened · +23,148 g/sec
The problem
Stripe, Google, and Coinbase have built the payment rails for autonomous agents. 161 million machine-to-machine transactions have already happened. $15 trillion in B2B spend is projected to flow through agent marketplaces by 2028. Every single transaction has a hidden carbon cost that nobody is measuring.
Driven entirely by AI infrastructure
AI training and inference workloads
Azure AI + Copilot deployment
Source: Published sustainability reports 2024–2025
The solution
Intercepts every AI call and routes to the most eco-efficient model that meets your quality bar. Real-time grid carbon intensity. Zero prompt rewriting.
Quality-constrained optimization · Grid-aware region selection · Batch scheduling for off-peak
Every agent gets a carbon budget alongside its payment budget. Set limits per agent, team, or department. Auto-downgrade when budgets run low.
Per-agent budgets · Auto-downgrade on budget exceeded · Real-time balance API
Micro-levy calculated per transaction and routed to verified carbon removal via Stripe Climate. Works natively with MPP, x402, and AP2.
Stripe Climate Orders · Frontier portfolio · Gold Standard / Verra verification
Every AI action produces a standardized environmental receipt — CO₂e, water, energy, offset paid, model, region, grid mix. Open spec. Machine-readable.
Full audit trail · ESG / CSRD / SEC ready · Exportable · Bank-statement style
Company-wide sustainability scores, per-agent carbon breakdowns, trend analysis, and optimization recommendations.
Agent Sustainability Score · Trend analysis · Optimization engine
The stakes
Every tonne of CO₂ that doesn't get removed is a debt on the 1.5°C budget. GreenLedger routes every AI inference levy directly to verified carbon removal via Stripe Climate.
Source: Global Carbon Project (historical) · CICERO/IPCC AR6 (pathways) · GreenLedger routes every inference levy to verified carbon removal.
How it works
Prompt Sent
Your agent calls GreenLedger instead of the model provider directly. One line change.
Router Scores
Complexity classifier evaluates the prompt. Grid carbon intensity checked by region.
Model Selected
Cheapest model that meets your quality bar is chosen. Haiku handles ~80% of typical tasks.
Response + Receipt
Inference runs. Response returned to your agent alongside a full environmental receipt.
Offset + Audit
Micro-levy routed to Stripe Climate. Receipt logged to dashboard. Budget deducted.
Requested
opus-4-6
Routed to
haiku-4-5
CO₂e
0.047g
Energy
0.20 Wh
Water
0.36 mL
Savings
80%
Levy
$0.000024 → Stripe Climate
The bet
The same way no serious company deploys software without security today.