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AgentRun: DSL to turn agents into workflows

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Hi HN,I just open sourced the DSL that our harness in grep.ai uses to turn repeatable parts of agent work into workflows. You can combine tool calls, code, Jev-powered system one decisions for things like routing and screening evidence, and agents when a step needs more investigation.Our harness uses the traces and retro notes agents leave behind when doing a job to figure out which parts can become a workflow. The idea is to make the work easier to understand and avoid paying for a full agent loop where one isn’t needed. For example, a research workflow can split a question into subquestions, send agents to research them in parallel, use Jev to screen the evidence, and have another agent write the report. You can inspect the steps, evaluate the evidence screening separately, or change one agent without rebuilding everything.The DSL and examples are in our GitHub. There’s a scripted demo you can run without API keys: https://github.com/Parcha-ai/agentrunYou can also use it as a Pi extension to build, inspect, and run workflows: https://github.com/Parcha-ai/agentrun#use-it-in-piI would love to hear if this is useful to others.More background on how AgentRun works in this video: https://www.youtube.com/watch?v=vOVhtGjtwpg. Or read about our use cases in this article: https://x.com/MiguelriosEN/status/2101029313906987422.

HN · launched Sep 23, 2026 · 51 upvotes (top 15%) · 1 view

Niche: ai agent development platforms · 598 launches, 22 in the last 7 days ▼ -29% · Explore this niche →

Category and tags

  • Horizontal
  • Workflow automation
  • Developer
  • AI-native
  • Hobby / open-source project

Visit website ↗ Source listing ↗

Could you build this?

Yes A domain-specific language (DSL) and execution harness to chain LLM tool calls, branching logic, and agent steps is standard TypeScript/Python code that can be vibe-coded easily.

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Competitors

Other products that read as similar to this one : 876 launches clear the similarity bar, closest 8 shown.

Attention rank: #199 of 877 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).

Launched 323 days after the earliest competitor.

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