Mission Brief
Project Overview
HITMAN is an autonomous investigation and resolution system for merchant settlement holds in payment infrastructure. Its core rule is a strict separation: agents reason, deterministic systems control reality. A LangGraph cognitive runtime gathers evidence, tests hypotheses, and proposes strongly typed decisions, but it never holds execution credentials. Every proposed action passes through a deterministic policy engine with capability-scoped tools, financial exposure limits, and fail-closed execution. Evidence is classified by provenance in an epistemic ledger so untrusted input cannot mint trusted facts, and human authorization, when required, is recorded as an immutable fact bound to the reviewer and case. FastAPI, PostgreSQL, and Temporal provide the API layer, durable state, and workflow guarantees, with an append-only audit trail across every transition.