Veris – Agent sandboxes with simulated external services

What it does

Before launch, battle-test your agent until it passes QA and compliance. After launch, feed every production failure back into simulation, so the agent that shipped keeps getting better. Agents plateau after launch. Failures are found by customers, fixes are guesswork, and evals report scores without driving improvement. An eval suite that says 74% and nothing about why. Incidents get patched one prompt tweak at a time, each fix silently breaking something else, and the agent six months after launch is the agent you launched. Every failure, caught before deploy or replayed from production, is root-caused, fixed, and pinned as a regression scenario. When your model is open-source, the same…from veris.ai

• 
  Agent Simulate2025 · agentsimulate.com · ▲413

  Test your AI apps with thousands of digital humans

• 
  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…

• 
  Venn.aiMar 2026 · venn.ai · ▲336

  Delegate real work to AI agents with safety guardrails

• 
  VellumJan 2026 · vellum.ai · ▲413

  Build AI agents using plain English to do your boring tasks

• 
  Agent Runners2025 · netlify.com · ▲185

  Build and ship with Claude Code, Codex, Gemini in Netlify

• 
  I Built a Sandbox for AgentsJan 2026 · github.com · ▲31

  Contribute to vrn21/bouvet.com development by creating an account on GitHub.

• 
  Spira Maxima▲578

  Video model that turns script into viral social media videos

  AI · 18d ago · spira.ai

• 
  Rill Browser▲540

  The browser where Claude Code and Codex work beside you

  AI · 18d ago · rill.love

• 
  Germany's new sovereign AI model Kolibri▲424

  Kolibri is Aleph Alpha

  AI · 20d ago · tej.as

• 
  Giving Opus 5.5 a simulated paint canvas▲392

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

  AI · 21d ago · stillwet.art

• 
  PixVerse R2▲381

  A real-time world model you can explore and change

  AI · 30d ago · world.pixverse.video

• 
  Beam.win▲378

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

  AI · 4d ago · beam.win

• 
  Brew ▲900

  Like Claude design for email marketing

  AI · May 2026 · brew.new

• 
  Kilo Code for VS Code▲896

  Parallel agents, diff reviewer, and multi-model comparisons

  Dev tools · May 2026 · kilo.ai

• 
  StoreClaw▲806

  Grow your store profits with agents that know how to sell

  AI · May 2026 · storeclaw.ai

• 
  PollyReach▲795

  Give your agent a real number and voice to make calls.

  AI · May 2026 · pollyreach.ai

• 
  Needle: We Distilled Gemini Tool Calling into a 26M Model▲776

  Hey HN, Henry here from Cactus. We open-sourced Needle, a 26M parameter function-calling (tool use) model. It runs at 6000 tok/s prefill and 1200 tok/s decode on consumer devices. We were always frustrated by the little effort made towards building agentic models that run on budget phones, so we conducted investigations that led to an observation: agentic experiences are built upon tool calling, and massive models are overkill for it. Tool calling is fundamentally retrieval-and-assembly (match query to tool name, extract argument values, emit JSON), not reasoning. Cross-attention…

  Life & fun · May 2026 · github.com

• 
  Files.md – Open-source alternative to Obsidian▲730

  🌱 Private, quiet space for thinking. Simple app for .md files. - zakirullin/files.md

  Dev tools · May 2026 · github.com