---
title: "Describe the factor library PCF calculations use"
method: GET
path: "/pcf/factor-library"
---

# Describe the factor library PCF calculations use

`GET /pcf/factor-library`

PCF calculations use only the Greentally Factorbase library (ecoinvent 3.12 cutoff, IPCC 2021 GWP100, cradle-to-gate). available is false when the library is not loaded in this environment; every other PCF route that needs factors then fails with PCF_FACTOR_LIBRARY_UNAVAILABLE. Requires org.read.

## Response `200`

The PCF factor library

- PcfFactorLibraryResponse
  - `data` PcfFactorLibrary, required
    - `available` boolean, required
    - `boundary` string, nullable
    - `impactCategory` string, nullable
    - `lciaMethod` string, nullable
    - `name` string, required
    - `regionCodes` string[], required
    - `systemModel` string, nullable
    - `version` string, nullable

## Other responses

- `401` — Unauthorized
- `403` — Forbidden

## Changes

- **2026-10-01** `b4751fd15397` — 1 info
  - endpoint added

[Change history](https://skmtc.dev/greentally/apis/esgai-api/changes/pcf/factor-library/get.md)

---

[API](https://skmtc.dev/greentally/apis/esgai-api.md) · [All operations](https://skmtc.dev/greentally/apis/esgai-api/llms.txt) · [OpenAPI document](https://skmtc.dev/greentally/apis/esgai-api/revisions/b4751fd15397?raw)