---
title: "FOLIO Mapper"
canonical: "https://openlegalstandard.org/tools/mapper"
name: "FOLIO Mapper"
stage: "map"
maturity: "available"
benefit: "Keep your taxonomy, and gain a standardized one. Mapper splits homemade tags into the underlying FOLIO concepts. Agency investigation and/or enforcement becomes Regulator + Regulatory Service + Regulatory Investigation + Regulatory Enforcement."
liveUrl: "https://mapper.openlegalstandard.org/"
demoLinks: []
repo: "https://github.com/alea-institute/folio-mapper"
license: "MIT"
needs: {"key":"Matching runs without a key.","processing":"LLM-assisted mapping takes your own key, or a local model in the desktop app.","confidential":"Download the desktop app (Windows and macOS) to keep your taxonomy on your machine.","license":"MIT license."}
MCP: "https://openlegalstandard.org/resources/folio-mcp"
API: "https://folio.openlegalstandard.org/docs"
Python: "https://openlegalstandard.org/resources/folio-python-library"
---

# FOLIO Mapper

INPUT: your homemade tags. OUTPUT: standard FOLIO tags that every tool understands.

Keep your taxonomy, and gain a standardized one. Mapper splits homemade tags into the underlying FOLIO concepts. Agency investigation and/or enforcement becomes Regulator + Regulatory Service + Regulatory Investigation + Regulatory Enforcement.

Maturity: Available.



Demo: FOLIO Mapper turns a firm's homemade tags into standard FOLIO concepts: Broker-Dealer Law maps to three concepts on three branches.
- [Video](https://openlegalstandard.org/assets/demos/mapper.mp4)
- [Poster](https://openlegalstandard.org/assets/demos/mapper.poster.webp)

One firm practice-area tag, Broker-Dealer Law, maps to three standard FOLIO concepts.

FOLIO Mapper's Confirm your input screen lists the Banking & Finance exemplar: 16 practice tags in five groups, including Broker-Dealer Law.
1. Load the Banking & Finance exemplar.
2. Mapper reads 16 homemade practice tags in five groups.
3. No LLM or API key needed.

Mapper's candidate tree for Broker-Dealer Law, with Financial Industry Regulatory Authority checked under Quasi-Public Governmental Body and three concepts selected.
1. Mapper ranks FOLIO candidates for each tag.
2. Widen the list and check Financial Industry Regulatory Authority.
3. Broker-Dealer Law now holds three selections.

Mapper's Input-to-Output Mappings view draws lines from Broker-Dealer Law to Broker-Dealer, Broker-Dealer Law, and Financial Industry Regulatory Authority, with Broker-Dealer's definition and synonyms beside them.
1. The Mappings view draws each tag's links.
2. Broker-Dealer Law maps to three FOLIO branches: Actor / Player, Area of Law, and Governmental Body.
3. Concept details show the definition and synonyms.

Full-screen Entity Graph for Broker-Dealer: 16 nodes and 16 edges link it to Broker, Commissions (Pay), Investment Assets, and Broker-Dealer Law.
1. Expand the entity graph to full screen.
2. Broker-Dealer sits among 16 related FOLIO concepts.
3. Dashed lines mark see-also links across branches.

## Try it 

- [Open Mapper and load the sample taxonomy.](https://mapper.openlegalstandard.org/)

- [Build with it](https://openlegalstandard.org/tools/mapper#build)

## What it needs and where your data goes 

Matching runs without a key.

LLM-assisted mapping takes your own key, or a local model in the desktop app.

Download the desktop app (Windows and macOS) to keep your taxonomy on your machine.

MIT license.

## Build with it 

Export mappings in 8 formats, call the API, or self-host the web app.

- [Source and setup](https://github.com/alea-institute/folio-mapper)
- [GitHub repository](https://github.com/alea-institute/folio-mapper)

- [Download desktop apps](https://github.com/alea-institute/folio-mapper/releases/latest)
Version 0.10.0: macOS (.dmg), Windows (.exe)

## How each role uses it 

### KM and Innovation

map your matter and practice taxonomy once, then reuse FOLIO tags across every tool you buy.
- [KM and Innovation](https://openlegalstandard.org/tools/for/km-and-innovation)


### Legal Technology Companies

map a customer's taxonomy to FOLIO during onboarding.
- [Legal Technology Companies](https://openlegalstandard.org/tools/for/legal-technology-companies)


## Related links 

- [All FOLIO tools](https://openlegalstandard.org/tools)
- [Build on FOLIO](https://openlegalstandard.org/tools/build)
- [Forum](https://discourse.openlegalstandard.org/)
- [GitHub issues](https://github.com/alea-institute/folio-mapper/issues)