Hanson is a prediction market app.
- Self-hosted, free and open-source software.
- No real money, users trade virtual internet points.
- Designed for running internal prediction markets in organizations.
Vaporware warning: Hanson is under development and not yet in a state where it is useful. I will likely lose interest in it before it reaches that stage.
See the development guide for a detailed guide for how to run and develop Hanson locally. The gist of it is:
Enter a development environment with Nix ≥2.11:
nix develop --command $SHELL
Run the initial database setup:
tools/run_postgres.py --force-init run/db_dev
# In a different terminal:
export PGHOST="$PWD/run/db_dev"
tools/migrate.py setup
tools/migrate.py migrate latest
# Now you can Ctrl+C the postgres instance in the other terminal.
Run the app in development mode:
overmind start
By default, Flask will listen on http://localhost:5000. Then create yourself
a few users, and give them some points to spend:
./cli.py add-user etyrell "Eldon Tyrell"
./cli.py add-user lkowalski "Leon Kowalski"
./cli.py add-user rbatty "Roy Batty"
./cli.py add-user rdeckard "Rick Deckard"
./cli.py airdrop 25.0
Hanson intends to outsource authentication to a third-party identity provider, so there is no authentication step for development, you can sign in with only the username.
- Add a vacuum daemon because autovacuum doesn’t run on insert-only tables.
- Add the ability to freeze a market, to prevent insider trading by the people who have control over the resolution.
- Add a way for anybody to contribute an outcome (in the case of categorical outcomes), so markets can be used somewhat like open-answer polls.
Hanson is licensed under the Apache 2.0 license. Please do not open an issue if you disagree with the choice of license.