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OpenImpact Agent Guide

Architecture

  • src/openimpact/contracts.py: shared data contracts for requests, plan deltas, and venue batches.
  • src/openimpact/model.py: deterministic temporary-impact regression model.
  • src/openimpact/federated.py: local venue training, secure aggregation, and federated orchestration.
  • src/openimpact/synthetic.py: deterministic synthetic market generator for safe testing.
  • src/openimpact/replay.py: replay engine with deterministic latency jitter.
  • src/openimpact/ledger.py: SQLite governance ledger for model updates.
  • src/openimpact/evaluation.py: RMSE, latency, and leakage-style metrics.
  • src/openimpact/pipeline.py: end-to-end demo runner.

Tech Stack

  • Python 3.11+
  • numpy and pandas for numeric and tabular work.
  • sqlite3 from the standard library for durable audit logging.
  • pytest for tests.

Rules

  • Keep the synthetic generator deterministic for a fixed seed.
  • Prefer the smallest correct change that preserves the model/evaluation contract.
  • Update tests whenever behavior changes.
  • Keep public APIs importable from openimpact.
  • test.sh must keep passing pytest and python3 -m build.

Verification

  • bash test.sh
  • python -m openimpact