Quickstart (Python reference)
Phase 1A reference / parity port — editable install from git; prefer Go for new features.
Python is the reference / parity port. Prefer Go for new Phase 1B/1C features. Until a wheel is on PyPI, editable install from git is the supported path.
Prerequisites
- Python 3.11+
- Git
1. Clone and install
git clone https://github.com/Coder-s-OG-s/Trajectory-IR.git
cd Trajectory-IR
python -m venv .venv
# Windows: .\.venv\Scripts\activate
# Unix: source .venv/bin/activate
pip install -U pip
pip install -e ".[dev]"
pytest conformance/ -q2. Minimal client flow
Real public client APIs only:
from client.python.trajectory_client import (
open_trajectory,
project,
seal_decision,
exec_tool,
commit_step,
)
from trajectory_ir.effects import EffectClass
from trajectory_ir.runtime.tool import Tool
def echo(msg: str) -> str:
return msg
traj = open_trajectory(tenant_id="demo", trajectory_id="qs-1", db_path="qs.sqlite")
project(traj, step_n=1, context={"goal": "hello"})
seal_decision(traj, step_n=1, plan={"tool_calls": [{"name": "echo", "args": {"msg": "hi"}}]})
tool = Tool(name="echo", fn=echo, effect_class=EffectClass.PURE)
result = exec_tool(traj, step_n=1, call={"args": {"msg": "hi"}}, tool=tool, seq=2)
print(result.result) # hi
commit_step(traj, step_n=1, seq=4)Next
- Go Quickstart (primary)
- Concepts
- Python API

