FaultFence beta: 17 financial attack scenarios to stress-test AI agents
Miserable_Gas_1527 · reddit · 2026-10-29
A Reddit developer opened FaultFence for public beta: a local-first security testing kit for Python AI agents that handle financial operations (balances, payouts, refunds, checkout). It ships 17 financial security scenarios including duplicate payment retries, tool-result poisoning, payment amount tampering, quantity ambiguity, and budget/approval bypasses.
- Local-first: runs offline against synthetic financial operations, no real accounts needed
- Optional testing of OpenAI-backed agents, repeating each attack up to 3 times for consistency
- Custom agents plug in via adapters and tool mappings
- Windows/Linux support (macOS experimental); an Assessment Explorer shows per-attack evidence and findings
The author wants 10–15 beta testers to validate setup friction, usefulness of the evidence, and missing attack scenarios. Authorized synthetic non-production testing only.
More from coding & agent
- Weaviate Podcast: MIT PhD's "Machine Studying" lets always-on agents prep without knowing the task — CShorten30 · 2026-10-29
- Dev rebuilds Slack as video with Cursor agents and computer use — mattyp · 2026-10-29
- Deepgram acquires Daily, spins up independent Pipecat Foundation — charles_irl · 2026-10-29
- Don't force multi-agent for enterprise: a one-night RPA script beats slow, costly agents — sujingshen · 2026-10-29
- After 30 approval prompts, 'yes' to everything sent a broken release to his whole list — latent_lurker8587 · 2026-10-29
- Nat Eliason builds a personal AI writing system in one Claude Code session — nateliason · 2026-10-29