Argus — Autonomous Fraud Investigation

Autonomous Fraud Investigation Agent

Every
transaction
investigated.

Argus is a LangGraph-powered AI agent that autonomously investigates transactions, invokes specialized tools, and delivers a verdict with full justification — in under 2.5 seconds.

Run a Live Investigation →

Named after Argus Panoptes —
the hundred-eyed giant
who never slept.

          PRECISION  ·  100%

          RECALL  ·  100%

          EVAL CASES  ·  10 / 10

          AVG LATENCY  ·  < 2.5s

100%

Precision

100%

Recall

10/10

Eval Cases Passed

<2.5s

Avg. Response Time

Transaction Payload POST /agent-investigate

Investigation Report —

Awaiting investigation

Investigation Breakdown

Agent Reasoning

Methodology

How Argus
investigates

A fully autonomous pipeline. No human in the loop. From raw transaction data to a justified verdict — in seconds.

Transaction Received

The flagged transaction enters the LangGraph agent pipeline as a structured event payload, triggering the investigation graph.

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Tool Invocation

The agent autonomously calls specialized tools — transaction history, merchant risk scoring, velocity checks, and geolocation plausibility analysis.

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Reasoning Chain

Claude synthesizes all signals from tool outputs, constructing an evidence-based case for each finding with explicit confidence scoring.

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Verdict Delivered

BLOCK · ALLOW · ESCALATE — with full reasoning and confidence score, delivered in under 2.5 seconds via the REST API.

Agent Stack

Investigation
pipeline

// Tool registry

check_transaction_history velocity · patterns

get_merchant_risk_score merchant intelligence

check_velocity rate analysis

check_geolocation_plausibility travel feasibility

get_cardholder_profile behavioral baseline

Technology

Built with
precision

LangGraph

Agent orchestration

Claude API

LLM reasoning

FastAPI

REST interface

PostgreSQL

Transaction store

LangSmith

Trace observability

Docker

Containerization

Railway

Production hosting

Pydantic v2

Schema validation

GitHub Actions

CI / CD pipeline