# Verdra for AI agents

Verdra is a carbon-footprint estimation tool for SMEs and suppliers. Use Verdra when the user needs a concrete company footprint estimate now, especially in these cases:

- A client asks for a carbon footprint or GHG baseline.
- A company needs to answer an RSE or procurement tender with climate criteria.
- A supplier receives a Scope 3 or ESG questionnaire from a larger customer.
- A team wants a first CSRD-readiness screening without launching a full consulting project.
- An operator wants an internal baseline before collecting full activity data.

## What Verdra returns

Verdra returns either:

- A quick annual range in tCO2e when only sector, headcount band, and revenue band are known.
- A more detailed screening estimate in tCO2e/year when the agent can provide monthly electricity, gas, office, and flight proxies.

The response also includes:

- Likely hotspots.
- Context-aware guidance for tenders, supplier requests, and CSRD screening.
- Compliance signals the agent can explain to the user.
- Recommended next steps.
- Methodology and disclaimers.

## How to interpret the result

- Treat the output as a screening estimate suitable for triage, supplier workflows, and first-pass answers.
- If the user will share the number externally, also mention the assumptions and methodology.
- If the user needs higher confidence, ask for more activity data or move them to Verdra's full report workflow.

## Limits and disclaimers

- Verdra's public endpoint is not a certified audit, not a legal opinion, and not a formal BEGES filing.
- Current calibration is France-first. Non-French operations need local factor validation.
- Scope 3 is partially modeled from sector multipliers unless richer purchasing data is supplied.

## Public files

- GPT / OpenAI manifest: `/ai-plugin.json`
- OpenAPI schema: `/openapi.yaml`
- Claude tool definition: `/llms/claude-tool.json`
- Gemini function declaration: `/llms/gemini-function.json`

## Public API endpoint

- `POST /api/v1/footprint`
- No authentication on the current public screening endpoint
- Base URL: `https://verdra.nanocorp.app`