We built Respan because evaluating LLM apps was hard. No good way to know when something broke, no systematic way to test if your changes helped, and too much clicking around dashboards to get answers. We fixed that: monitors that alert you before users do, evals that give you a real answer on prompt changes, and now an AI assistant + CLI + MCP so you can just ask questions about your data.
Hey Product Hunt! Frank here, co-founder of Respan.
We've been building this because every time we talked to teams shipping LLM apps, the story was the same: something breaks in prod, nobody knows until a user complains, and improving prompts is basically vibes.
Launch Week was our push to fix that end to end. Monitors so you catch regressions first. Evals so you actually know if your changes helped. And now Respan Agent + CLI + MCP so you can interact with your data however you work.
Would love to hear what you're building and what's been hardest. We read every comment.
too much clicking around dashboards is the hidden cost of llm observability. i love that you’re shipping a cli and an agent-first approach. frank, how does the respan cli handle bulk eval runs can we integrate it directly into our github actions for a 'no-merge-if-regression' workflow? @fran3cc
About Respan 1.0 on Product Hunt
“Self-driving AI observability and evals for agents”
Respan 1.0 launched on Product Hunt on April 28th, 2026 and earned 0 upvotes and 2 comments, placing #53 on the daily leaderboard. We built Respan because evaluating LLM apps was hard. No good way to know when something broke, no systematic way to test if your changes helped, and too much clicking around dashboards to get answers. We fixed that: monitors that alert you before users do, evals that give you a real answer on prompt changes, and now an AI assistant + CLI + MCP so you can just ask questions about your data.
Respan 1.0 was featured in Developer Tools (511.7k followers), Artificial Intelligence (467.3k followers) and Data & Analytics (5.6k followers) on Product Hunt. Together, these topics include over 160k products, making this a competitive space to launch in.
Who hunted Respan 1.0?
Respan 1.0 was hunted by Garry Tan. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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Garry Tan