plenum

Search, chat and research over what a parliament actually said.

plenum ingests a parliament's open data — for now speeches from the chamber, motions and other member-submitted documents, and the register of members — into PostgreSQL with full-text and vector indexes, then puts three things on top:

• Search. Full-text search with phrase, prefix, boolean and exclusion syntax, filterable by party, year, speaker and debate type.
• Chat. A retrieval-augmented assistant that answers from the corpus and cites the speeches and documents it used. Every claim links back to a source.
• Deep research. A background agent that proposes research threads, digs into each one, and produces a report with citations.

It runs in production as rixdagen.se over the Swedish Riksdag. The Swedish configuration ships here as the worked example; everything country-specific lives in one file.

Grounding is the point. This is a tool for journalists and researchers, so an answer that cannot be traced to a source is a bug, not a rough edge. If you change the prompts or the retrieval logic, keep that property.

How it stays country-agnostic

Concern	Where it lives
Parties, colours, chamber activity types, vocabulary, ID shapes, source URLs	parliament.yaml
System prompts, tool descriptions	prompts/<lang>/**.md
Site copy	content/<lang>/*.md
Knowledge of one parliament's JSON shape	ingest/adapters/<name>.py
Everything else	country-neutral

Adapting to another parliament means writing a config file, an ingest adapter, and a set of prompts in your language — not editing the application. See docs/PORTING.md.

The database schema is country-neutral English: speeches, documents, document_proposals, person_id, constituency. Concepts that have no stable English equivalent — the Swedish yrkande or riksmöte — carry neutral column names while the country's own word lives in parliament.yaml. See docs/SCHEMA.md.

Requirements

• PostgreSQL 14+ with pgvector and pg_trgm
• Python 3.10+
• Node 18+ (frontend build)
• An OpenAI-compatible chat endpoint and an OpenAI-compatible embeddings endpoint. Self-hosted vLLM, OpenAI, OpenRouter, Berget and Gemini's compatibility endpoint all work; see providers.template.yaml.

Quickstart

Full step-by-step setup, including how to plug in each model provider and how to verify each stage worked, is in docs/SETUP.md. The short version:

git clone https://git.edfast.se/lasse/plenum && cd plenum
cp .env.example .env         # then fill in database and model settings
python -m venv .venv && .venv/bin/pip install -e ".[dev]"

Create the database and apply the schema:

createdb plenum && psql -d plenum -c 'CREATE EXTENSION vector; CREATE EXTENSION pg_trgm;'
psql -d plenum -c "ALTER DATABASE plenum SET app.fts_config = 'swedish';"
psql -d plenum -f _postgres/schema.sql

Fetch and index data. This downloads several GB and takes hours; start with one range:

python -m ingest.cli fetch --source documents --range 2022-2025
python -m ingest.cli load  --source documents
python scripts/make_embeddings.py

Run it:

.venv/bin/uvicorn backend.app:app --reload    # API on :8000
cd frontend && npm install && npm run dev     # UI on :5173, proxying /api

Layout

backend/          FastAPI app: routes, search, chat, deep research
  services/         chat orchestration, tools the model can call, retrieval
  services/research/ the background research agent
packages/llm/     provider-agnostic LLM client and the tool registry
_postgres/        schema, migrations, connection pool
ingest/           fetch -> adapt -> upsert -> chunk -> embed
prompts/          system prompts and tool descriptions, per language
parliament.yaml   everything specific to one parliament
frontend/         React + TypeScript + Vite
deploy/examples/  systemd units and an nginx site, with placeholders

Documentation

docs/SETUP.md	Step-by-step install: database, chat model, embeddings, data
docs/PORTING.md	Adapting to a parliament other than Sweden
docs/SCHEMA.md	What every table and column means
docs/deep-research.md	How the background research agent works
docs/sources-system.md	How citations are tracked and verified
docs/multi-provider.md	Letting users bring their own model API key
docs/shadow-communicator.md	The parallel commentary shown while the model works
docs/eval-harness.md	Measuring whether answers are actually grounded
docs/eval-scorer.md	Optional cross-encoder scoring for citations
SECURITY.md	Model-authored SQL, API keys, chat privacy
CONTRIBUTING.md	How to work on this

Configuration

All settings are environment variables, documented in .env.example. Two paths let a deployment keep its own values outside the repository entirely:

• PARLIAMENT_CONFIG — a parliament.yaml elsewhere on disk
• PROMPTS_DIR — a prompt tree elsewhere on disk
• CONTENT_DIR — site copy (explainer, guide) elsewhere on disk

Set PROMPTS_RELOAD=1 in development to re-read prompt files on every call.

Running a fork

If you maintain a deployment as a fork, keep it differing from upstream only in files upstream does not have. Everything branded or private is either an env-var pointer (the three above), an untracked file (.env, providers.yaml), or an addition under deploy/prod/. make check-fork-divergence fails the build if anything else drifts, which turns a merge conflict into a caught mistake.

Security

The database_query tool executes model-authored SQL. Give it a database role with SELECT only — the application does not currently enforce that itself, and corpus text reaches the model's context, so treat it as untrusted input. See SECURITY.md.

License

AGPL-3.0-or-later. If you run a modified version as a network service, you must offer its source to users of that service.

If AGPL does not work for your organisation, ask — I am open to granting other terms for newsrooms and public-interest projects. Contact details are in the repository metadata.

Acknowledgements

Swedish parliamentary data comes from data.riksdagen.se under the Riksdag's open-data terms. plenum is not affiliated with or endorsed by the Swedish Riksdag.