nowfound

AI · September 7, 2026

Antifailure

A disposable copy of your production stack for every pull request: masked Postgres, contained third-party APIs, and agents that use your app like people.

Antifailure launched on September 7, 2026 with 11 votes, #958 of 8,094 launches that month and more than 90% of that year's launches.

In plain words

Antifailure creates a temporary copy of a production application stack for each code change, complete with real database schemas and data volumes with all identifiers masked. It contains third-party API calls within a firewall and uses AI agents to test the app like real users would. The engine is open source and runs in continuous integration without requiring an account, letting developers see what would break before deploying.

written from the facts on this page · September 2026

From the sources

Antifailure builds a throwaway copy of your production stack for each branch: the real schema and data volume with every identifier masked and the masking proved, a network the app cannot escape, and agents that use it like people. Your change runs there first, it tells you what would have broken, and then the copy deletes itself. MIT licensed, one command, no account.

The engine is open source and runs in your own continuous integration today, with no account. The hosted control plane is open: sign in with GitHub and connect a repository. Isolated Twin . A temporary copy of the application stack for every risky change. Safe State . Sanitized, referentially consistent, production-shaped Postgres. Side-Effect Firewall . A stateful Stripe and captured mail instead of charging cards. Load . Traffic shaped like production's own access log, sent at the twin. Migration Safety . Locks, table rewrites, and query plans before it ships. Antifailure makes a copy of production, the same size and the same shape and the same load, with every real name replaced. Your…from antifailure.dev

Does a similar job

all alternatives →
  • ReplicasJun 2026 · replicas.dev · ▲239

    Hey HN! I'm Connor, creator of Replicas. I'm a heavy Codex/Claude Code user, and I wanted to hand off tasks to agents like I would to an engineer - kick something off before work, let it scaffold while I'm at lunch, even come back to a ready PR. The problem: existing alternatives use workspace VMs that are black boxes. I have no access to any of them - they can't run tests, read logs, or use tools like the Playwright MCP (which I use to verify agents actually fixed what they claim to fix). Replicas gives agents real cloud workspaces where they can: - Run your test suite and read the…

  • MD
    Multiplayer Demo Built with Elixir2022 · multiplayer.dev · ▲221

    Hey HN, I’m an engineer at Supabase [0] and one of the creators of this demo. My team and I have been working hard to bring developers the next version of Supabase Realtime. The current version of Realtime [1] is a Change Data Capture (CDC) server for a PostgreSQL database that broadcasts changes via WebSockets to authorized subscribers. It’s written in Elixir/Phoenix. The server utilizes PostgreSQL’s logical replication functionality, which writes database changes to Write-Ahead Logging (WAL) segment files, and a replication slot, responsible for managing and retaining WAL files.…

  • We built an AI to review your pull requests2025 · infinitcode.ai · ▲53

    Hey HN, We’re two developers (co-founders) with a team of 20 who got tired of spending hours reviewing PRs, so we built Infinitcode.ai, an AI-powered code reviewer that: - *Summarizes PRs in plain English*: No more deciphering 1,000-line diff jungles - *Catches more than bugs*: Security holes, performance pitfalls, code smells, even typos (yes, we’ll flag “vurnerabilities” and vulnerabilities) - *Zero onboarding*: Works instantly—no “let me learn your codebase for weeks” nonsense. Why we’re posting: We’re in alpha and need brutal honesty. Roast our tool, mock our UI, or tell us why AI will…

  • RiskKernelJun 2026 · github.com · ▲25

    Deterministic cost / loop / time budgets · full observability · crash-resumable runs · human-approval gates · a memory you own. Self-hosted. Your keys. No telemetry. Point it at your existing agents - one env var. - prashar32/riskkernel

  • Supabase-Test – Fast Isolated Postgres DBs for Testing Supabase RLSNov 2025 · npmjs.com · ▲30

    Hi HN — we've built a testing framework for Supabase that spins up fast, isolated Postgres databases for each test case. It’s designed to make RLS policies easy to validate with real database state, without global test fixtures or mock auth. Features: - Instant isolated Postgres DBs per test - Automatic rollback after each test - RLS-native testing with `.setContext()` for auth simulation - Flexible seeding (SQL, CSV, JSON, JS) - Works with Jest, Mocha, and any async test runner - CI-friendly (runs cleanly in GitHub Actions) We also published example projects and a free set of tutorials:…

  • Open-source playground to red-team AI agents with exploits publishedMar 2026 · github.com · ▲30

    We build runtime security for AI agents. The playground started as an internal tool that we used to test our own guardrails. But we kept finding the same types of vulnerabilities because we think about attacks a certain way. At some point you need people who don't think like you. So we open-sourced it. Each challenge is a live agent with real tools and a published system prompt. Whenever a challenge is over, the full winning conversation transcript and guardrail logs get documented publicly. Building the general-purpose agent itself was probably the most fun part. Getting it to reliably use…

More ai this month

the category →
  • Video model that turns script into viral social media videos

    AI · 23d ago · spira.ai

  • The browser where Claude Code and Codex work beside you

    AI · 23d ago · rill.love

  • Kolibri is Aleph Alpha

    AI · 25d ago · tej.as

  • Paintings by AI models: programs run through a simulation of oil paint.

    AI · 26d ago · stillwet.art

  • Beam.win▲378

    Run AI agents on one Mac and use its windows on another

    AI · 9d ago · beam.win

  • Route requests to the right LLM for cost, latency & quality

    AI · 27d ago · fastrouter.ai

Source: Product Hunt launch ↗

Launched alongside, September 2026

the whole month →
  • E-ink bird frame for Raspberry Pi - real-time bird detection by audio, fully local AI, rendered as real, hand-cut 1800s bird illustrations. - arnegiacomo/fugleramme

    AI · Sep 2026 · github.com

  • WI

    Special relativity simulator in which light crawls along at a human speed, so Lorentz contraction, aberration and Doppler shift happen at walking pace.

    Life & fun · Sep 2026 · rivendell.dmitrybrant.com

  • Jev▲544

    Fast, structured AI decisions for software automation

    AI · Sep 2026 · console.typesafe.ai

  • ReSO AI▲510

    Get discovered & recommended when customers ask AI

    AI · Sep 2026 · resollm.ai

  • Start coding agents, control sessions, review PRs. Anywhere.

    Dev tools · Sep 2026 · kilo.ai

  • AINA▲497

    Find your job search blind spots with an AI coach

    AI · Sep 2026 · aina-tech.io